JP5618283B2 - Optical display device production system and optical display device production method - Google Patents

Description

The present invention relates to an optical display device production system and an optical display device production method.
This application claims priority based on Japanese Patent Application No. 2012-042840 filed on February 29, 2012 and Japanese Patent Application No. 2012-084832 filed on April 3, 2012, and its contents Is hereby incorporated by reference.

  Conventionally, in a production system for an optical display device such as a liquid crystal display, an optical member such as a polarizing plate to be bonded to a liquid crystal panel (optical display component) is formed from a long film into a sheet piece having a size matching the display area of the liquid crystal panel. After being cut out, packed and transported to another line, it may be bonded to a liquid crystal panel (see, for example, Patent Document 1).

  For example, the sheet piece is obtained by using a long optical film as a raw material and cutting it into a rectangular shape with a cutter.

  FIG. 15 is a schematic diagram showing a conventional method for cutting out an optical film chip.

  First, as shown in FIG. 15A, the optical film 101 is sent out by the transport device 100.

  Next, as shown in FIG. 15B, the optical film 101 sent out by the transport device 100 is cut at an oblique angle by a cutting device (not shown). Thereby, the optical film intermediate body (first intermediate film) 102 is cut out. In this oblique angle cutting step, the first intermediate film 102 is moved from the optical film 101 to a predetermined angle so that the target optical axis direction of the optical film chip is a direction suitable for the target liquid crystal display device. Cut out at.

  Next, as shown in FIG. 15C, a sheet-like member is laminated on the first intermediate film 102 by the film laminating apparatus 110. The film laminating apparatus 110 includes a pair of rollers 111 and 112 and a reel 113 that feeds a sheet-like member. The sheet-like member sent out from the reel 113 and the first intermediate film 102 cut out at a predetermined angle are laminated through a pair of rollers 111 and 112 and sent out to the next process.

  Next, as shown in FIG. 15 (d), a laminated film in which a sheet-like member fed from the reel 113 and the first intermediate film 102 cut out at a predetermined angle are laminated is a cutting not shown. It is cut in half by the device. Thereby, the second intermediate film 103 is cut out.

  Next, as shown in FIG. 15E, the quality of the cut out second intermediate film 103 is visually inspected.

  Next, as shown in FIG. 15 (f), the second intermediate film 103 is set on the stage 120. The stage 120 is provided with a marking 121 for positioning the second intermediate film 103. When the second intermediate film 103 is set on the stage 120, the second intermediate film 103 is positioned on the marking 121 with reference to the side cut at an oblique angle in the step shown in FIG.

  Then, a plurality of optical film chips 104 are cut out from the second intermediate film 103 by a cutting device (not shown). The cutting device includes a plurality of cutters arranged at intervals corresponding to the length of the long side of the optical film chip 104 and a plurality of cutters arranged at intervals corresponding to the length of the short side of the optical film chip 104 in a plan view. A region cut out in a rectangular shape by four cutters is a cut out region of one optical film chip 104.

  The cutting direction of the second intermediate film 103 by the cutting device (for example, the extending direction of the cutters arranged at intervals corresponding to the length of the long side of the optical film chip 104) is the target with respect to the longitudinal direction of the optical film 101. It arrange | positions so that an angle (angle determined by the design specification) may be made. For example, when the optical axis of the optical film chip 104 is designed to make 7 ° with respect to the long side of the optical film chip 104, the cutting direction of the cutting device is set to 7 with respect to the longitudinal direction of the optical film 101. Set to °.

Japanese Unexamined Patent Publication No. 2003-255132

  In the step of FIG. 15 (f), the cutting direction of the second intermediate film 103 is set based on the longitudinal direction of the optical film 101. Generally, the long optical film 101 is dyed with a dichroic dye. This is because the resin film is manufactured by uniaxial stretching, and the direction of the optical axis of the optical film 101 substantially coincides with the stretching direction of the resin film. However, the optical axis of the optical film 101 is not uniform throughout the optical film 101 and varies slightly in the width direction of the optical film 101. For example, when manufacturing the optical film 101 by uniaxially stretching a resin film dyed with a dichroic dye, due to uneven thickness of the resin film or uneven dyeing of the dichroic dye, the central portion of the optical film 101 There is a tendency that a deviation occurs between the direction of the optical axis and the direction of the optical axis of the portion (edge portion) near the end of the optical film 101. Therefore, when a plurality of optical film chips 104 are cut out from the optical film 101, the optical axis variation also occurs between the optical film chips 104, reflecting this optical axis variation.

  As described above, the conventional method for cutting out an optical film chip has a problem that variation occurs in the direction of the optical axis among a plurality of cut out optical film chips. When variations occur in the direction of the optical axis among the plurality of optical film chips, variations in the direction of the optical axis also occur in the optical display device produced by the production system of the optical display device. Recently, display devices have been improved in contrast, and stricter optical axis accuracy is required than ever before. For example, in conventional mobile phones, the tolerance of the optical axis was ± 1 °, but in smartphones and tablet-type information terminals, the tolerance of the optical axis of ± 0.25 ° is required. Is expected to be severe.

A first object of the present invention is to provide a method for producing a production system and an optical display device of the optical display device capable of suppressing a variation of the optical axis occurs in the optical display device.

  Furthermore, in the above conventional configuration, a sheet piece slightly larger than the display area is cut out in consideration of variation in dimensions of the liquid crystal panel and the sheet piece, and bonding variation (positional deviation) of the sheet piece to the liquid crystal panel. . Therefore, there is a problem that an extra area (frame part) is formed around the display area, and downsizing of the device is hindered.

A second object of the present invention is to provide an optical display device production system capable of reducing the frame area around the display area to enlarge the display area and downsize the device.

In order to achieve the above object, the present invention employs the following.
(1) An optical display device production system according to an aspect of the present invention is an optical display device production system in which an optical member is bonded to an optical display component, and a table that supports the optical display component; An unwinding unit for unwinding the belt-shaped optical member sheet together with the separator sheet from the raw roll, and obtaining data of the in-plane distribution of the optical axis of the optical member sheet, and obtaining the in-plane distribution of the optical axis of the optical member sheet The direction of the average optical axis in the plane of the optical member sheet is calculated based on the data, and the direction of the average optical axis in the plane of the optical member sheet is relative to the cutting direction of the optical member sheet. A control device that adjusts a cutting direction of the optical member sheet so as to form a target angle; and the separation direction that is adjusted by the control device in the optical member sheet. While leaving the datasheet, coercive a first cutting device to obtain a sheet piece the optical member sheet with larger cut than the display area, a peeling unit for peeling the sheet piece from the separator sheet, the sheet pieces holds adhered to lifting surface, and the lamination coupling head that the sheet pieces was stuck to the optical display member held on the holding surface, causes pre relative movement and said the Kihago head table, disconnect the driving device for driving the bonding head so as to implement the holding and bonding before Symbol sheet piece and an outer excess portion of the facing portion and the opposing portion between the display region of the sheet piece, the sheet A second cutting device that cuts out the optical member having a size corresponding to the display area from a piece.

  (2) In the above aspect (1), the control device detects two optical axes that intersect at the largest angle in the plane of the optical member sheet, and sets the angle formed by the two optical axes to 2 etc. The axis to be divided may be calculated as an average optical axis in the plane of the optical member sheet.

  (3) In the above aspect (1) or (2), the image processing apparatus further includes an imaging device that captures an image of a holding state of the sheet piece on the holding surface, and the driving device uses the imaging result of the imaging device. Based on this, the bonding head and the table may be relatively moved such that the cut side of the sheet piece and one side of the optical display component are coincident or parallel to each other.

  (4) In any one aspect of the above (1) to (3), the optical member sheet may further include a storage device that stores in-plane distribution data of the optical axis.

  (5) In any one of the above aspects (1) to (4), the apparatus further includes an inspection device that inspects the optical axis of the optical member sheet at a plurality of inspection positions in the width direction of the optical member sheet. Also good.

(6) In the aspect of the above (5), the inspection apparatus includes an analyzer movable in the width direction of the optical member sheet, and the inspection apparatus moves the analyzer in the width direction of the optical member sheet. The optical axis of the optical member sheet may be detected at a plurality of inspection positions in the width direction of the optical member sheet by detecting the optical axis of the optical member sheet with the analyzer while moving the optical member sheet.
In the above aspects (1) to (6), the laminating head may align the sheet piece held on the holding surface in the horizontal direction in the head movement direction, the orthogonal direction, and the rotation direction. Good. Moreover, it has a detection part which detects the fault mark stamped on the said optical member sheet | seat, and the said bonding head hold | maintains the site | part which detected the said fault mark of the said optical member sheet | seat on the said bonding surface, and discards it. You may convey to a position. The optical display component may further include a turntable that moves the optical display component to a carry-in position, a bonding position of the sheet piece to the optical display component, and a carry-out position. The image display device further includes an imaging device that images the optical display component after the sheet pieces are bonded together, and the second cutting device is configured to perform the optical display based on imaging data of the optical display component by the imaging device. By cutting the first optical member sheet along the outer peripheral edge of the display area of the component, the facing portion of the sheet piece facing the display area and the excess portion outside the facing portion are separated from the sheet piece. The optical member having a size corresponding to the display area may be cut out.

(7) The method of producing an optical display device according to another aspect of the present invention is a method of producing an optical display device comprising pasted an optical member to the optical display components, raw band-shaped optical member sheet A first step of unwinding together with a separator sheet from a roll; and obtaining data of in-plane distribution of the optical axis of the optical member sheet, and obtaining the optical member based on data of in-plane distribution of the optical axis of the optical member sheet The direction of the average optical axis in the plane of the sheet is calculated, and the direction of the average optical axis in the plane of the optical member sheet forms a target angle with respect to the cutting direction of the optical member sheet. In the second step of adjusting the cutting direction of the optical member sheet, and in the adjusted cutting direction, the optical member sheet is moved from the display area in a state where the separator sheet is left on the optical member sheet. A third step of obtaining a sheet pieces cut is large, and a fourth step of peeling off the sheet piece from the separator sheet holds paste the sheet piece on the holding surface of the bonding heads, the holding fifth of the sheet pieces held Ru was stuck to the optical display element on the surface step, the relatively moving the table for supporting front and Kihago head the optical display component, before Symbol wherein Separating the sixth step of driving the pasting head to carry out the holding and pasting of the sheet piece, and the surplus part of the sheet piece facing the display area and the outer part of the facing part; And a seventh step of cutting out the optical member having a size corresponding to the display area from a piece.

  (8) In the above aspect (7), the two optical axes that intersect at the largest angle in the plane of the optical member sheet are detected, and the axis that bisects the angle formed by the two optical axes is You may calculate as an average optical axis in the surface of an optical member sheet | seat.

(9) An optical display device production system according to another aspect of the present invention is an optical display device production system in which an optical member is bonded to an optical display component, and a belt-shaped optical member sheet is rolled into an original roll. The optical member sheet is cut larger than the display area of the optical display component to form a sheet piece while unwinding from the bonding device, and the sheet piece is bonded to the optical display component. An imaging device that images the optical display component after being combined, and the sheet piece that is bonded to the optical display component by cutting the sheet piece based on imaging data of the optical display component by the imaging device A cutting device that cuts off an excess portion disposed outside a portion facing the display area and forms the optical member having a size corresponding to the display area. The laminating apparatus cuts the optical member sheet in a state where the optical member sheet is unwound from the raw roll together with the separator sheet, and the separator sheet is left on the optical member sheet. A cutting portion for removing the sheet piece from the separator sheet, and affixing and holding the sheet piece on a holding surface, and affixing the sheet piece held on the holding surface to the optical display component And a bonding head to be combined.

  (10) In the aspect of (9), further includes a control device that determines a relative bonding position between the optical display component and the sheet piece based on inspection data in the optical axis direction of the optical member sheet, The said bonding head may bond the said sheet piece hold | maintained on the said holding surface to the said optical display component based on the relative bonding position which the said control apparatus determined.

  (11) In the aspect of the above (10), the bonding head may align the sheet piece held on the holding surface in the horizontal direction in the head moving direction, the orthogonal direction, and the rotating direction.

  (12) In any one aspect of the above (9) to (11), the bonding device further includes a detection unit that detects a defect mark marked on the optical member sheet, and the optical member sheet The part where the defect mark is detected may be held by the bonding head and conveyed to a disposal position.

  (13) In any one of the above aspects (9) to (12), the optical display component is rotated to move to a carry-in position, a bonding position of the sheet piece to the optical display component, and a carry-out position. You may further have a table.

  (14) In any one aspect of the above (9) to (13), the bonding head holds the sheet piece attached to an arc-shaped holding surface and held on the holding surface. In order to bond the sheet piece to the optical display component, the sheet piece may be tilted along the curvature of the holding surface.

(15) An optical display device production system according to another aspect of the present invention is an optical display device production system in which an optical member is bonded to an optical display component. The first optical member sheet is cut to be larger than the display area of the optical display component while being unwound from one roll, and then the first sheet piece is turned on the front and back sides of the optical display component. The second optical member sheet is made larger than the display region while unwinding the second optical member sheet in the form of a first bonding device that is bonded to the surface of the optical member and the second optical member sheet in the form of a belt. After cutting into a second sheet piece, a second bonding device for bonding the second sheet piece to the surface of the optical member bonding body on the first sheet piece side, the first sheet piece and the second sheet I stuck the pieces together Wherein an imaging device for imaging an optical display component, by cutting the first sheet piece and the second sheet piece on the basis of the imaging data of the optical display component by the imaging device, bonding the optical display components The first optical member composed of the first optical member sheet and the first optical member sheet and the second sheet piece, the first optical member made of the first optical member sheet, A first cutting device that forms a second optical member made of a second optical member sheet as the optical member having a size corresponding to the display area, and the first bonding device includes the first optical device. In the state which left the 1st separator sheet in the 1st unwinding part which unwinds a member sheet with the 1st separator sheet from the 1st original fabric roll, and the 1st optical member sheet A first cut portion for cutting the academic member sheet to obtain the first sheet piece, a first peeling portion for peeling the first sheet piece from the first separator sheet, and the first holding piece for the first holding surface A first bonding head for bonding the first sheet piece held on the first holding surface to one of the front and back surfaces of the optical display component, and the second bonding The combined device includes a second unwinding unit that unwinds the second optical member sheet together with the second separator sheet from the second original fabric roll, and the second optical member sheet in a state where the second separator sheet remains. A second cut part for cutting the second optical member sheet to obtain the second sheet piece; a second peeling part for peeling the second sheet piece from the second separator sheet; Affix to the holding surface and hold Together, having a second bonding head for bonding the second sheet piece held in said second holding surface to the said first sheet one surface of the optical member bonded body.

  (16) In the above aspect (15), the first relative bonding position between the optical display component and the first sheet piece is determined based on the inspection data in the optical axis direction of the first optical member sheet. And a control device for determining a second relative bonding position between the optical member bonding body and the second sheet piece based on inspection data in the optical axis direction of the second optical member sheet, and the first bonding Based on the first relative bonding position determined by the control device, the first bonding head of the combined device has the first sheet piece held on the first holding surface on one surface of the optical display component. The second bonding head of the second bonding device is bonded to the second sheet piece held on the second holding surface based on the second relative bonding position determined by the control device. You may paste on the surface of the 1st sheet one side of a member pasting object .

  (17) In the aspect of the above (16), the first bonding head of the first bonding apparatus is configured such that the first sheet piece held on the first holding surface is in the horizontal direction, the head moving direction, and the Alignment is performed in the orthogonal direction and the rotation direction, and the second bonding head of the second bonding apparatus is configured such that, in the horizontal direction, the second sheet piece held on the second holding surface is the head moving direction and its orthogonal direction, and You may align in a rotation direction.

  (18) In any one of the above aspects (15) to (17), the first bonding apparatus further includes a first detection unit that detects a defect mark marked on the first optical member sheet. The first optical member sheet, the portion where the defect mark is detected is held in the first bonding head and conveyed to a first disposal position, and the second bonding device is the second optical member sheet A second detection unit for detecting the defect mark marked on the second optical member sheet, the portion where the defect mark is detected on the second optical member sheet being held in the first bonding head and conveyed to a second disposal position. May be.

  (19) In any one aspect of the above (15) to (18), the optical display component is a first application position that is a loading position and a bonding position of the first sheet piece to the optical display component. You may further have a turntable moved to a joint position, the 2nd bonding position which is a bonding position to the said optical member bonding body of a said 2nd sheet piece, and a carrying-out position.

  (20) In any one aspect of the above (15) to (19), the first laminating apparatus is configured to perform the first from the first original fabric roll on which the first optical member sheet is wound. It further has a first sheet conveying device that conveys the first optical member sheet along its longitudinal direction while unwinding the optical member sheet, and the second bonding member is wound with the second optical member sheet. A second sheet conveying device that conveys the second optical member sheet along the longitudinal direction while unwinding the second optical member sheet from the second original fabric roll; The conveyance direction and the conveyance direction of the second optical member sheet may be parallel to each other.

(21) In any one of the above aspects (15) to (20), the third optical member sheet is unwound from the display region while the belt-shaped third optical member sheet is unwound from the third original fabric roll. after it was also largely cut to third sheet piece, and the third bonding apparatus for bonding the third sheet piece on the front and back the other surface of the optical display component, the third of said stuck to the optical display components A second cutting device that cuts off a surplus portion disposed outside the portion facing the display region from the sheet piece, and forms the optical member having a size corresponding to the display region; The pasting device is a state in which the third separator sheet is left on the third optical member sheet, and a third unwinding portion that unwinds the third optical member sheet together with the third separator sheet from the third original fabric roll. The third A third cut portion for cutting the academic member sheet to obtain the third sheet piece, a third peeling portion for peeling the third sheet piece from the third separator sheet, and a third holding surface for the third sheet piece And a third bonding head for bonding the third sheet piece held on the third holding surface to the other surface of the optical display component.

  (22) In the aspect of the above (21), the control device performs third relative bonding between the optical display component and the third sheet piece based on inspection data in the optical axis direction of the third optical member sheet. The position is determined, and the third bonding head of the third bonding apparatus determines the third sheet piece held on the third holding surface based on the third relative bonding position determined by the control apparatus. You may affix on the other side of the front and back of an optical display component.

  (23) In the above aspect (21) or (22), the third laminating apparatus has a third detection unit for detecting a defect mark marked on the third optical member sheet, You may hold | maintain the site | part which detected the said fault mark of an optical member sheet | seat to a said 3rd bonding head, and may convey it to a 3rd disposal position.

  (24) In any one of the above aspects (21) to (23), the third laminating apparatus is configured such that the third optical roll is wound around the third original fabric roll. A third sheet conveying device that conveys the third optical member sheet along its longitudinal direction while unwinding the optical member sheet; and conveying the first optical member sheet and conveying the second optical member sheet The direction and the conveyance direction of the third optical member sheet may be parallel to each other.

  (25) In any one of the above aspects (21) to (24), the surplus portions separated from each of the first sheet piece, the second sheet piece, and the third sheet piece are collected together. The optical display component may be peeled off.

  (26) In any one of the above aspects (21) to (25), the first cutting device and the second cutting device are laser cutters, and the first cutting device and the second cutting device. Are connected to the same laser output device, and the laser output from the laser output device may be branched and supplied to the first cutting device and the second cutting device.

(27) In any one of the above (21) to (26), at least one bonding head among the first bonding head, the second bonding head, and the third bonding head is , At least one of the first sheet piece, the second sheet piece, and the third sheet piece is at least one of the arc-shaped first holding surface, the second holding surface, and the third holding surface. Affixed to one holding surface and tilted along the curvature of the holding surface to bond the sheet piece held on the holding surface to the optical display component or the optical member bonding body. Also good.
In the above aspects (9) to (14), the cutting device cuts the sheet piece along the outer peripheral edge of the display area of the optical display component based on the imaging data of the optical display component by the imaging device. By separating the excess portion disposed outside the portion facing the display area from the sheet piece bonded to the optical display component, the optical member having a size corresponding to the display area is formed. May be.
In the above aspects (15) to (27), the first cutting device is configured to perform the first cutting along the outer peripheral edge of the display area of the optical display component based on the imaging data of the optical display component by the imaging device. By cutting the sheet piece and the second sheet piece, each of the first sheet piece and the second sheet piece bonded to the optical display component is disposed outside the portion facing the display area. Excessive portions are separated and the first optical member made of the first optical member sheet and the second optical member made of the second optical member sheet are formed as the optical member having a size corresponding to the display area. Also good.

  According to one embodiment of the present invention, it is possible to provide an optical display device production system and an optical display device production method capable of suppressing the occurrence of optical axis variation in the optical display device.

  In addition, according to another aspect of the present invention, it is possible to provide an optical display device production system that can reduce the frame portion around the display region to enlarge the display area and downsize the device.

It is a top view which shows the outline of the film bonding system in 1st embodiment of this invention. It is a top view of the liquid crystal panel of this embodiment. It is AA sectional drawing of FIG. 2, and is a top view which shows the principal part of the cutting device of an optical film chip. It is sectional drawing of the optical member sheet | seat of this embodiment. It is a top view of the said film bonding system. It is a side view which shows the principal part of the said film bonding system. It is a side view of the manufacturing apparatus of an optical member sheet | seat. It is a top view which shows the principal part of the manufacturing apparatus of an optical member sheet | seat. It is a figure which shows in-plane distribution of the optical axis of a mother sheet. It is a figure which shows in-plane distribution of the optical axis of a mother sheet. It is a figure which shows in-plane distribution of the optical axis of a mother sheet. It is a perspective view which shows a mode that several optical member sheet | seat is cut out from a test | inspected sheet | seat. It is explanatory drawing of the method of cutting out a sheet piece from an optical member sheet | seat. It is explanatory drawing of the method of adjusting the cutting direction of an optical member sheet | seat. It is explanatory drawing of the method of adjusting the cutting direction of an optical member sheet | seat. It is explanatory drawing of the method of bonding a sheet piece with respect to an optical display component. It is a flowchart which shows the production method of an optical display device. It is a schematic diagram which shows the cutting-out method of the optical film chip | tip of a prior art example. It is a side view which shows the outline of the film bonding system of 2nd embodiment. It is a top view of a film bonding system. It is a side view which shows the outline of the bonding apparatus of a film bonding system. It is a figure which shows an example of the determination method of the bonding position of the sheet piece with respect to a liquid crystal panel. It is a figure which shows an example of the determination method of the bonding position of the sheet piece with respect to a liquid crystal panel. It is a side view which shows the outline of the film bonding system of 3rd embodiment. It is a schematic diagram of the bonding apparatus applied to the film bonding system of 4th embodiment. It is a top view which shows the cutting method of the excess part of a sheet piece.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. This embodiment demonstrates the film bonding system which comprises the one part as a production system of an optical display device.

  Drawing 1 is a schematic structure figure of film pasting system 1 of this embodiment. The film bonding system 1 bonds a film-shaped optical member such as a polarizing film, a retardation film, and a brightness enhancement film to a panel-shaped optical display component such as a liquid crystal panel or an organic EL panel. The film bonding system 1 is configured as a part of a production system that produces an optical display device including the optical display component and the optical member. In the film bonding system 1, the liquid crystal panel P is used as the optical display component. In FIG. 1, for convenience of illustration, the film bonding system 1 is illustrated in two upper and lower stages.

  FIG. 2 is a plan view of the liquid crystal panel P viewed from the thickness direction of the liquid crystal layer P3. The liquid crystal panel P includes a first substrate P1 that has a rectangular shape in plan view, a second substrate P2 that has a relatively small rectangular shape disposed to face the first substrate P1, a first substrate P1, and a second substrate. And a liquid crystal layer P3 sealed between the substrate P2. The liquid crystal panel P has a rectangular shape that conforms to the outer shape of the first substrate P1 in plan view, and a region that fits inside the outer periphery of the liquid crystal layer P3 in plan view is defined as a display region P4.

  FIG. 3 is a cross-sectional view taken along the line AA of FIG. The front and back surfaces of the liquid crystal panel P are cut out from the first, second, and third optical member sheets F1, F2, and F3 (refer to FIG. 1; hereinafter, sometimes collectively referred to as the optical member sheet FX) having a long strip shape. The first, second, and third optical members F11, F12, and F13 (hereinafter may be collectively referred to as the optical member F1X) are appropriately bonded. In the present embodiment, the first optical member F11 and the third optical member F13 as polarizing films are bonded to both the backlight side and the display surface side of the liquid crystal panel P, respectively. Further, a second optical member F12 as a brightness enhancement film is further bonded to the surface on the backlight side of the liquid crystal panel P so as to overlap the first optical member F11. The first, second, and third optical members F11, F12, and F13 are first, second, and third sheet pieces F1m, F2m, and F3m, which will be described later (hereinafter may be collectively referred to as sheet pieces FXm). (Window cut).

  FIG. 4 is a partial cross-sectional view of the optical member sheet FX bonded to the liquid crystal panel P. The optical member sheet FX includes a film-shaped optical member main body F1a, an adhesive layer F2a provided on one surface (the upper surface in FIG. 4) of the optical member main body F1a, and one of the optical member main bodies F1a via the adhesive layer F2a. The separator sheet F3a is detachably stacked on the surface, and the surface protection film F4a is stacked on the other surface (the lower surface in FIG. 4) of the optical member body F1a. The optical member main body F1a functions as a polarizing plate, and is bonded over the entire display area P4 of the liquid crystal panel P and its peripheral area. For convenience of illustration, hatching of each layer in FIG. 4 is omitted.

  The optical member body F1a is bonded to the liquid crystal panel P via the adhesive layer F2a in a state where the separator sheet F3a is separated while leaving the adhesive layer F2a on one surface thereof. Hereinafter, the part remove | excluding the separator sheet F3a from the optical member sheet | seat FX is called the bonding sheet | seat F5.

  The separator sheet F3a protects the adhesive layer F2a and the optical member body F1a before being separated from the adhesive layer F2a.

  The surface protective film F4a is bonded to the liquid crystal panel P together with the optical member body F1a. The surface protective film F4a is disposed on the side opposite to the liquid crystal panel P with respect to the optical member body F1a to protect the optical member body F1a. The surface protective film F4a is separated from the optical member main body F1a at a predetermined timing.

  The optical member sheet FX may be configured not to include the surface protective film F4a, or the surface protective film F4a may be configured not to be separated from the optical member main body F1a.

  The optical member body F1a is bonded to the sheet-like polarizer F6, the first film F7 bonded to one surface of the polarizer F6 with an adhesive or the like, and the other surface of the polarizer F6 with an adhesive or the like. And a second film F8. The first film F7 and the second film F8 are protective films that protect the polarizer F6, for example.

  The optical member main body F1a may have a single-layer structure composed of a single optical layer or a stacked structure in which a plurality of optical layers are stacked on each other. In addition to the polarizer F6, the optical layer may be a retardation film, a brightness enhancement film, or the like. At least one of the first film F7 and the second film F8 may be subjected to a surface treatment that provides an effect such as anti-glare including hard coat treatment and anti-glare treatment for protecting the outermost surface of the liquid crystal display element. The optical member body F1a may not include at least one of the first film F7 and the second film F8. For example, when the first film F7 is omitted, the separator sheet F3a may be bonded to one surface of the optical member body F1a via the adhesive layer F2a.

  FIG. 5 is a plan view (top view) of the film bonding system 1. Hereinafter, the film bonding system 1 is demonstrated with reference to FIG. 1, FIG. In the figure, an arrow F indicates the transport direction of the liquid crystal panel P. In the following description, the upstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport upstream side, and the downstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport downstream side.

  The film bonding system 1 sets the predetermined position of the main conveyor 5 as the start point 5a and the end point 5b of the bonding process. The film laminating system 1 conveys the liquid crystal panel P from the starting point 5a to the first and second sub-conveyors 6 and 7 extending in the direction perpendicular to the main conveyor 5 and from the starting point 5a to the first starting position 6a of the first sub-conveyor 6. The first transport device 8, the cleaning device 9 provided on the first sub-conveyor 6, the first rotary index 11 provided on the panel transport downstream side of the first sub-conveyor 6, and the first of the first sub-conveyor 6. A second transport device 12 for transporting the liquid crystal panel P from the final position 6b to the first rotary start position 11a of the first rotary index 11, and first and second bonding devices 13 provided around the first rotary index 11, 15 and a film peeling device 14.

  Moreover, the film bonding system 1 includes a second rotary index 16 provided on the panel transport downstream side of the first rotary index 11 and a second rotary index 16 from the first rotary terminal position 11 b of the first rotary index 11. A third transport device 17 that transports the liquid crystal panel P to the rotary starting position 16a, a third bonding device 18 and an inspection device 19 provided around the second rotary index 16, and a panel transport downstream side of the second rotary index 16 A second conveyor 7 provided on the second rotary conveyor 16, a fourth conveyor device 21 for conveying the liquid crystal panel P from the second rotary end position 16b of the second rotary index 16 to the second starting position 7a of the second sub conveyor 7, The liquid crystal panel P is moved from the second terminal position 7b of the sub-conveyor 7 to the end point 5b of the main conveyor 5. And a fifth feeder 22 for feeding.

  The film laminating system 1 performs a predetermined process sequentially on the liquid crystal panel P while transporting the liquid crystal panel P using the lines formed by the drive-type main conveyor 5, the sub-conveyors 6 and 7, and the rotary indexes 11 and 16. Apply. The liquid crystal panel P is conveyed on the line with its front and back surfaces being horizontal.

  The liquid crystal panel P is conveyed, for example, in the main conveyor 5 with the short side of the display area P4 along the conveying direction, and in each of the sub conveyors 6 and 7 orthogonal to the main conveyor 5, the long side of the display area P4 is conveyed in the conveying direction. In each rotary index 11, 16, the long side of the display area P 4 is conveyed in a direction along the radial direction of each rotary index 11, 16. Reference numeral 5c in the figure indicates a rack that flows on the main conveyor 5 in correspondence with the liquid crystal panel P.

  A sheet piece (corresponding to the optical member F1X) of the bonding sheet F5 cut out to a predetermined length from the belt-shaped optical member sheet FX is bonded to the front and back surfaces of the liquid crystal panel P. Each part of the film bonding system 1 is comprehensively controlled by a control device 25 as an electronic control device.

The first transport device 8 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions.
The first transport device 8 transports, for example, the liquid crystal panel P held by suction to the first starting position 6a (the left end in FIG. 5) of the first sub-conveyor 6 in a horizontal state, and releases the suction at the position. Then, the liquid crystal panel P is delivered to the first sub-conveyor 6.

  The cleaning device 9 is, for example, a water-washing type that performs brushing and rinsing of the front and back surfaces of the liquid crystal panel P and then drains the front and back surfaces of the liquid crystal panel P. Note that the cleaning device 9 may be a dry type that performs static electricity removal and dust collection on the front and back surfaces of the liquid crystal panel P.

  The second transport device 12 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions. The second transport device 12 transports, for example, the liquid crystal panel P held by suction to the first rotary starting position 11a of the first rotary index 11 in a horizontal state, releases the suction at the position, and moves the liquid crystal panel P to the first position. Transfer to one rotary index 11.

  The first rotary index 11 is a disk-shaped rotary table having a rotation axis along the vertical direction, and rotates clockwise with the left end portion in plan view of FIG. 5 as the first rotary starting position 11a. The 1st rotary index 11 makes the position (upper end part of FIG. 5) rotated 90 degrees clockwise from the 1st rotary first departure position 11a the 1st bonding position 11c. The first optical member F11 on the backlight side by the first bonding device 13 is bonded at the first bonding position 11c.

  The 1st rotary index 11 makes the film peeling position 11e the position (upper right end part of FIG. 5) rotated 45 degrees clockwise from the 1st bonding position 11c. At the film peeling position 11e, the film peeling device 14 peels the surface protective film F4a of the first optical member F11.

  The 1st rotary index 11 makes the position (right end position of FIG. 5) rotated 45 degrees clockwise from the film peeling position 11e the 2nd bonding position 11d. The second optical member F12 on the backlight side is bonded by the second bonding device 15 at the second bonding position 11d.

  The 1st rotary index 11 makes the position (lower end part of FIG. 5) rotated 90 degrees clockwise from the 2nd bonding position 11d the 1st rotary terminal position 11b. Carrying out by the 3rd conveying apparatus 17 is made | formed at this 1st rotary terminal position 11b.

  The third transport device 17 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions. The third transport device 17 transports, for example, the liquid crystal panel P held by suction to the second rotary starting position 16a of the second rotary index 16, and reverses the front and back of the liquid crystal panel P during this transport, so that the second rotary starting position The suction is released at 16 a and the liquid crystal panel P is transferred to the second rotary index 16.

  The second rotary index 16 is a disk-shaped rotary table having a rotation axis along the vertical direction, and rotates clockwise with the upper end portion in plan view of FIG. 5 as the second rotary starting position 16a. The 2nd rotary index 16 makes the position (right end part of FIG. 5) rotated 90 degrees clockwise from the 2nd rotary first departure position 16a the 3rd bonding position 16c. The third optical member F13 on the display surface side is bonded by the third bonding device 18 at the third bonding position 16c.

  The 2nd rotary index 16 makes the position (lower end part of FIG. 5) rotated 90 degrees clockwise from the 3rd bonding position 16c the bonding inspection position 16d. Inspection at the bonding inspection position 16d by the inspection device 19 of the workpiece (liquid crystal panel P) on which the film is bonded (whether the position of the optical member F1X is appropriate (whether the positional deviation is within the tolerance range) ) Etc.) is made. The work determined that the position of the optical member F1X with respect to the liquid crystal panel P is not appropriate is discharged out of the system by a payout unit (not shown).

  The 2nd rotary index 16 makes the position (left end part of Drawing 5) rotated 90 degrees clockwise from pasting inspection position 16d the 2nd rotary termination position 16b. Carrying out by the 4th conveying apparatus 21 is made | formed by this 2nd rotary terminal position 16b.

  The fourth transport device 21 holds the liquid crystal panel P and transports it freely in the vertical direction and the horizontal direction. For example, the fourth transport device 21 transports the liquid crystal panel P held by suction to the second starting position 7a of the second sub-conveyor 7, releases the suction at the second starting position 7a, and moves the liquid crystal panel P to the second sub-conveying position 7a. Delivered to the conveyor 7.

  The fifth transport device 22 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions. For example, the fifth transport device 22 transports the liquid crystal panel P held by suction to the end point 5b of the main conveyor 5, releases the suction at the end point 5b, and delivers the liquid crystal panel P to the main conveyor 5. With the above, the bonding process by the film bonding system 1 is completed.

Hereinafter, the detail of the 1st bonding apparatus 13 is demonstrated with reference to FIG.
FIG. 6 is a side view showing the main part of the first bonding apparatus 13. In addition, the 2nd and 3rd bonding apparatuses 15 and 18 also have the same structure, The detailed description is abbreviate | omitted. In FIG. 6, the principal part of the 1st bonding apparatus 13 is divided and described in two steps up and down for convenience of illustration. In FIG. 6, the upper part shows a state when the bonding head is driven, and the lower part shows a state when an excess portion of the sheet piece is cut off on the backlight side of the optical display component.

  The 1st bonding apparatus 13 is bonding of the sheet piece F1m of the bonding sheet F5 cut into the predetermined size in the 1st optical member sheet | seat F1 with respect to the upper surface of liquid crystal panel P conveyed to the 1st bonding position 11c. I do. Then, the 1st bonding apparatus 13 cuts out the 1st optical member F11 of the magnitude | size corresponding to a display area from the sheet piece F1m.

  The 1st bonding apparatus 13 is a sheet | seat which conveys the 1st optical member sheet | seat F1 along the longitudinal direction, unwinding the 1st optical member sheet | seat F1 from the original fabric roll R1 in which the 1st optical member sheet | seat F1 was wound. The conveyance device 31 and the sheet conveyance device 31 hold the sheet piece F1m of the bonding sheet F5 cut out from the first optical member sheet F1 and the sheet piece F1m is conveyed to the first bonding position 11c. The facing portion between the bonding head 32 to be bonded to the upper surface of the sheet and the display region P4 of the sheet piece F1m and the excess portion outside the facing portion are separated, and the size corresponding to the display region P4 from the sheet piece F1m. And a second cutting device 50 that cuts out one optical member F11.

  The sheet conveying device 31 conveys the bonding sheet F5 using the separator sheet F3a as a carrier. The sheet conveying device 31 holds an original roll R1 around which the belt-shaped first optical member sheet F1 is wound, and unwinds a first optical member sheet F1 along its longitudinal direction, and an original roll R1. The first cutting member 31b for half-cutting the first optical member sheet F1 unwound from and the first optical member sheet F1 subjected to half-cutting are wound at an acute angle to separate the bonding sheet F5 from the separator sheet F3a. A knife edge (peeling portion) 31c to be wound, and a winding portion 31d that holds a separator roll R2 that winds the separator sheet F3a that has become independent through the knife edge 31c.

  In addition, although illustration is abbreviate | omitted, the sheet conveying apparatus 31 has a some guide roller which winds the 1st optical member sheet | seat F1 along a predetermined conveyance path | route. The first optical member sheet F1 is wider than the width of the display area P4 of the liquid crystal panel P (corresponding to the short side length of the display area P4 in this embodiment) in the horizontal direction (sheet width direction) orthogonal to the conveyance direction. It has a wide width.

  The unwinding unit 31a positioned at the starting point of the sheet conveying device 31 and the winding unit 31d positioned at the ending point of the sheet conveying device 31 are driven in synchronization with each other, for example. Thereby, the winding-up part 31d winds up the separator sheet F3a which passed through the knife edge 31c, while the unwinding part 31a delivers the 1st optical member sheet | seat F1 to the conveyance direction. Hereinafter, the upstream side in the transport direction of the first optical member sheet F1 (separator sheet F3a) in the sheet transport apparatus 31 is referred to as the upstream side of the sheet transport, and the downstream side in the transport direction is referred to as the downstream side of the sheet transport.

  The first cutting device 31b is disposed above the first optical member sheet F1. For example, the first cutting device 31b includes a circular cutting blade. The cutting blade is configured to be movable along the longitudinal direction of the guide portion extending in one direction by a drive mechanism (not shown). In addition, the length of the guide part is longer than the length of the width direction of the 1st optical member sheet | seat F1. The guide portion is rotationally driven in a plane parallel to the first optical member sheet F1 based on the cutting direction adjusted by the control device 25.

  In the first cutting device 31b, the first optical member sheet F1 is longer than the length of the display region P4 (corresponding to the long side length of the display region P4 in this embodiment) in the length direction orthogonal to the sheet width direction. Each time the length is extended, a part in the thickness direction of the first optical member sheet F1 is cut across the entire width along the sheet width direction (half cutting is performed).

  The first cutting device 31b prevents the first optical member sheet F1 (separator sheet F3a) from being broken by the tension acting during the conveyance of the first optical member sheet F1 (so that a predetermined thickness remains on the separator sheet F3a). Then, the advancing / retreating position of the cutting blade is adjusted, and the half cut is performed to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a. In addition, you may use the laser apparatus replaced with a cutting blade.

  The first optical member sheet F1 after the half cut is cut along the entire width in the sheet width direction of the first optical member sheet F1 by cutting the optical member body F1a and the surface protection film F4a in the thickness direction. Is formed. The first optical member sheet F1 is divided into sections having a length corresponding to the long side length of the display region P4 in the longitudinal direction by the cut line. Each section is one sheet piece (first sheet piece F1m) in the bonding sheet F5.

  The size and shape of the first sheet piece F1m can be arbitrarily set according to the shape of the optical member, the setting direction of the optical axis in the optical member, and the like. In the present embodiment, the first optical member sheet F1 is half-cut (bevel cut) in a direction intersecting the longitudinal direction, and a cut line is formed at a predetermined interval in the first optical member sheet F1. The first sheet piece F1m is obtained.

  In the present embodiment, the belt-shaped first optical member sheet F1 constituting the raw fabric roll R1 is manufactured by the optical member sheet manufacturing apparatus 40. Details of the optical member sheet manufacturing apparatus 40 will be described below with reference to FIGS.

  FIG. 7 is a side view of the optical member sheet manufacturing apparatus 40 for manufacturing the optical member sheet FX. The optical member sheet manufacturing apparatus 40 is configured as a part of a production system for producing an optical display device.

  The optical member sheet manufacturing apparatus 40 holds a mother roll R0 around which a belt-shaped optical member sheet F0 having a width wider than that of the first optical member sheet F1 (hereinafter sometimes referred to as a mother sheet F0) is wound. An unwinding section 41a for unwinding the mother sheet F0 along its longitudinal direction; and an inspection apparatus 42 for inspecting the optical axis of the mother sheet F0 unwound from the mother roll R0 at a plurality of inspection positions in the width direction of the mother sheet F0. The winding portion 41b that holds the inspected roll R0A that winds the inspected sheet F0A that has passed through the inspection device 42, and the unwinding portion 41c that holds the inspected roll R0A and feeds the inspected sheet F0A along its longitudinal direction. And a cutter for cutting out a plurality of optical member sheets FX from the inspected sheet F0A unwound from the inspected roll R0A. Having a -45, and a take-up unit 41d for holding the master roll R1 for winding an optical member sheet FX cut out by the cutter 45.

  The mother roll R0 has a wider width than the original roll R1. For example, the width of the mother roll R0 is about 1300 mm. The original fabric roll R1 is obtained by winding one of a plurality of optical member sheets FX cut out from the mother sheet F0 unwound from the mother roll R0 by the winding portion 41d. For example, a plurality of optical member sheets FX are cut out from a mother sheet F0 having a width of about 1300 mm. Thereby, the width | variety of the optical member sheet | seat FX is about 200 mm-300 mm.

  The inspection device 42 includes a light source 43 disposed above the mother sheet F0 and an analyzer 44 disposed below the mother sheet F0. The analyzer 44 includes a light receiving element (not shown) that receives light emitted from the light source 43 and transmitted through the mother sheet F0. In the inspection device 42, the optical axis of the mother sheet F0 is detected by detecting the intensity of light transmitted through the mother sheet F0 and the analyzer 44 with a light receiving element. The analyzer 44 is configured to be movable in the width direction of the mother sheet F0. The inspection device 42 detects the optical axis of the mother sheet F0 with the analyzer 44 while moving the analyzer 44 in the width direction of the mother sheet F0, so that the plurality of optical axes of the mother sheet F0 in the width direction of the mother sheet F0 are detected. Inspect at the inspection position.

  The inspection device 42 is not limited to the configuration in which the analyzer 44 is moved in the width direction of the mother sheet F0, and may be a configuration including a plurality of analyzers in the width direction of the mother sheet F0.

FIG. 8 is a plan view showing a main part of the optical member sheet manufacturing apparatus 40.
As shown in FIG. 8, a plurality of inspection areas CP are provided in the width direction of the mother sheet F0. The analyzer 44 is movable along the arrangement direction of the plurality of inspection regions CP. Thereby, the direction of the optical axis is detected in each inspection region CP in the width direction of the mother sheet F0.

  The optical axis data of the mother sheet F0 detected by the inspection device 42 is associated with the position of the mother sheet F0 (the position in the longitudinal direction and the position in the width direction of the mother sheet F0), and the storage device 24 shown in FIG. Is remembered.

  9A to 9C are diagrams illustrating in-plane distributions of the optical axis of the mother sheet F0. 9A to 9C show a state in which the mother sheet F0 is conveyed in the longitudinal direction of the mother sheet F0 from the unwinding portion 41a.

  As shown in FIGS. 9A to 9C, various distributions exist in the in-plane distribution of the optical axis of the mother sheet F0. The optical axis of the mother sheet F0 is disposed substantially along the longitudinal direction of the mother sheet F0.

  However, in the in-plane distribution of the optical axis of the mother sheet F0 shown in FIG. 9A, the direction of the optical axis is slightly inclined downward with respect to the longitudinal direction of the mother sheet F0. Looking at the in-plane distribution of the optical axis of the mother sheet F0 shown in FIG. 9B, the direction of the optical axis is slightly inclined downward and slightly upward with respect to the longitudinal direction of the mother sheet F0. Those are alternately arranged along the width direction of the mother sheet F0. Looking at the in-plane distribution of the optical axis of the mother sheet F0 shown in FIG. 9C, the direction of the optical axis is slightly shifted inward at both ends in the width direction of the mother sheet F0 compared to the central part of the mother sheet F0.

  The reason for the in-plane distribution of the optical axis as shown in FIG. 9C is that the polarizer film constituting the mother sheet F0 is formed by, for example, uniaxially stretching a PVA film dyed with a dichroic dye. Due to uneven thickness of the PVA film and uneven dyeing of the dichroic dye, the direction of the optical axis at the center portion of the mother sheet F0 and the optical portion at the edge (edge portion) near the end of the mother sheet F0 This is because deviation tends to occur between the directions of the axes. Hereinafter, as an example, a mother sheet F0 having an in-plane distribution of the optical axis illustrated in FIG. 9C will be described. The mother sheet F0 unwound from the mother roll R0 passes through the inspection device 42 and is wound around the winding portion 41b as the inspected sheet F0A.

  FIG. 10 is a perspective view showing a state where a plurality of optical member sheets FX are cut out from the inspected sheet F0A unwound from the inspected roll R0A. In addition, in FIG. 10, illustration of the raw fabric roll R1 and the winding-up part 41d is abbreviate | omitted for convenience.

  As shown in FIG. 10, above the inspected sheet F0A unwound from the inspected roll R0A held in the unwinding portion 41c, a plurality of gaps are provided at predetermined intervals in the width direction of the inspected sheet F0A. A cutter 45 is arranged. For example, as the cutter 45, a laser device or a cutting blade can be used. A plurality of optical member sheets FX are cut out from the inspected sheet F0A unwound from the inspected roll R0A by the plurality of cutters 45.

  When the optical member sheet FX is cut out from the inspected sheet F0A, the optical axis variation also occurs in the optical member sheet FX, reflecting the optical axis variation in the inspected sheet F0A. In the present embodiment, the optical member sheet FX is produced by cutting out a part of the inspected sheet F0A in the width direction. That is, the inspected sheet F0A is divided in the width direction to produce an optical member sheet for a plurality of lines, and the optical member sheet for one line is used as the optical member sheet FX. Therefore, the degree of optical axis variation in the optical member sheet FX is smaller than the degree of optical axis variation in the inspected sheet F0A.

  By the way, when the optical member is cut out from such an optical member sheet FX, the variation in the optical axis also occurs in the optical member, reflecting the variation in the optical axis. For this reason, there is a variation in the direction of the optical axis even in the optical display device on which the optical member is mounted. When the variation is large, the optical display device cannot be used as a defective product, and the optical display The number of device production decreases.

Therefore, in the present embodiment, the average optical axis direction in the plane of the optical member sheet FX is calculated based on the in-plane distribution data of the optical axis of the optical member sheet FX stored in the storage device 24 in advance. The cutting direction of the optical member sheet FX is adjusted so that the direction of the average optical axis in the plane of the optical member sheet FX forms a target angle with respect to the cutting direction of the optical member sheet FX.
Thereby, it is possible to reduce the variation of the optical axis that occurs in the optical display device.

  FIG. 11 is an explanatory diagram of a method of cutting out the first sheet piece FXm from the optical member sheet FX. In FIG. 11, the method of cutting out the 1st sheet piece F1m from the 1st optical member sheet | seat F1 which is an example of the optical member sheet | seat FX is shown. However, the method of cutting out the second sheet piece F2m from the second optical member sheet F2 and the method of cutting out the third sheet piece F3m from the third optical member sheet F3 are the same.

  In the present embodiment, the first optical member sheet F1 conveyed from the unwinding unit 31a is cut at an oblique angle by the first cutting device 31b. Thereby, the some 1st sheet piece F1m is cut out. Although not shown, the first sheet piece F1m has an in-plane distribution of the optical axis. When the first sheet piece F1m is cut out from the first optical member sheet F1, the cutting direction of the first optical member sheet F1 by the first cutting device is adjusted based on the in-plane distribution of the optical axis of the first sheet piece F1m. . Hereinafter, an example of a method for cutting out the first sheet piece F1m from the first optical member sheet F1 will be described.

  12A and 12B are explanatory diagrams of a method of adjusting the cutting direction of the first optical member sheet F1. FIG. 12A is a diagram showing an in-plane distribution of the optical axis of the first optical member sheet F1. FIG. 12B is a diagram illustrating an installation state of the first cutting device 31b after adjusting the cutting direction of the first optical member sheet F1.

  In FIGS. 12A and 12B, symbol L1 is a predetermined axis (axis along the edge line (width direction edge) of the first optical member sheet F1). Reference signs L2 and L3 are axes parallel to the axis L1. Reference numeral V1 denotes an optical axis having the largest deviation angle from the axis L1 (hereinafter referred to as a first optical axis). Reference numeral V2 denotes an optical axis having the smallest deviation angle from the axis L2 (hereinafter referred to as a second optical axis). Reference numeral V3 is an axis that divides the angle formed by the first optical axis V1 and the second optical axis V2 into two equal parts (hereinafter referred to as an average optical axis). θmax is an angle formed by the predetermined axis L1 and the first optical axis V1 (hereinafter referred to as a maximum deviation angle). θmin is an angle between the predetermined axis L2 and the second optical axis V2 (hereinafter referred to as the minimum deviation angle). θmid is an angle between the predetermined axis L3 and the average optical axis V3 (hereinafter referred to as an average deviation angle).

  Here, the “deviation angle” in FIGS. 12A and 12B is an angle when a clockwise direction with respect to a predetermined axis is positive and a counterclockwise direction with respect to the predetermined axis is negative.

  In the present embodiment, the control device 25 detects the first optical axis V1 and the second optical axis V2 that intersect at the largest angle within the plane of the first optical member sheet F1, and the first optical axis V1. An axis that bisects the angle formed by the second optical axis V2 is calculated as an average optical axis (average optical axis V3) in the plane of the first optical member sheet F1.

  In the present embodiment, the difference between the maximum deviation angle θmax and the minimum deviation angle θmin is Δα. In this case, assuming that the minimum deviation angle θmin is 0, as shown in FIG. 12A, the maximum deviation angle θmax is represented by an angle (Δα). The average deviation angle θmid is represented by an angle (Δα / 2).

  For example, in order to manufacture the first optical member F11 (see FIG. 13), a predetermined optical axis direction in the plane of the first optical member F11 is set to be a direction suitable for the target liquid crystal display device. Cut out at an angle of. For example, in the case of the absorption axis of the polarizing plate, the predetermined angle is 7 °.

  Here, consider a case where the axis L1 along the edge line of the first optical member sheet F1 is the direction of the optical axis intended for the first optical member. In this case, when the minimum deviation angle θmin is set to 0, the second optical axis V2 has the smallest deviation angle from the axis L2, and is therefore substantially aligned with the direction of the optical axis intended for the first optical member. On the other hand, since the first optical axis V1 has the largest deviation angle from the axis L1, the first optical axis V1 deviates greatly from the direction of the target optical axis in the first optical member. The first optical axis V1 is deviated by an angle Δα from the direction of the target optical axis in the first optical member.

  On the other hand, in this embodiment, the control apparatus 10 makes the direction of the average optical axis in the surface of the 1st optical member sheet | seat F1 make the target angle with respect to the cutting direction Vc of the 1st optical member sheet | seat F1. Thus, the first cutting device 31b is configured to rotate. In the present embodiment, as shown in FIG. 12B, an axis (axis L4) that forms a predetermined angle γ with respect to the average optical axis V3 is a reference for cutting out the first optical member F11 from the first optical member sheet F1. The 1st cutting device 31b is rotated so that it may become, and the cutting direction of the 1st optical member sheet | seat F1 is adjusted.

  For example, when the cutting direction of the first cutting device 31b is set in a direction orthogonal to the axis L1 along the edge line of the first optical member sheet F1 in the initial state, the first cutting device 31b is set to the initial state. Rotate clockwise from the position by (γ + Δα / 2). Thereby, the cutting direction Vc makes an angle (γ + Δα / 2) with respect to the cutting direction in the initial state.

  In this way, the axis L4 serves as a reference for cutting out the first optical member F11 from the first sheet piece F1m. In other words, the direction orthogonal to the cutting direction Vc is a reference for cutting out the first optical member F11 from the first sheet piece F1m. The average optical axis V3 corresponds to the direction of the target optical axis in the first optical member F11.

  In this case, the second optical axis V2 is shifted by (γ−Δα / 2) with respect to the axis L4. On the other hand, the first optical axis V1 is shifted by (γ + Δα / 2) with respect to the axis L4. That is, the second optical axis V2 is shifted by (−Δα / 2) with respect to the direction of the target optical axis in the first optical member F11. On the other hand, the first optical axis V1 is shifted by (Δα / 2) with respect to the direction of the target optical axis in the first optical member F11.

  Thus, according to this embodiment, since the average optical axis V3 is made to correspond to the direction of the target optical axis in the first optical member F11, the axis L1 along the edge line of the first optical member sheet F1 is set. Compared with the case where the direction of the optical axis is the target of the optical member, the deviation angle of both the first optical axis V1 and the second optical axis V2 can be reduced by half (deviation angle Δα → Δα). / 2).

  Returning to FIG. 6, the knife edge 31 c is located below the first optical member sheet F <b> 1 conveyed substantially horizontally from the left side to the right side in FIG. 6, and extends at least over the entire width in the sheet width direction of the first optical member sheet F <b> 1. Extend. The knife edge 31c is wound so as to be in sliding contact with the separator sheet F3a side of the first optical member sheet F1 after the half cut.

  The knife edge 31c wraps the first optical member sheet F1 at an acute angle at its acute-angled tip. When the first optical member sheet F1 is folded at an acute angle at the tip of the knife edge 31c, the separator sheet F3a is peeled from the bonding sheet F5. At this time, the adhesion layer F2a (bonding surface with the liquid crystal panel P) of the bonding sheet F5 faces downward. Immediately above the tip of the knife edge 31c is a separator peeling position 31e, and the tip of the knife edge 31c is in contact with the arc-shaped holding surface 32a of the bonding head 32 from above, so that the surface of the sheet piece of the bonding sheet F5 The protective film F4a (surface opposite to the bonding surface) is bonded to the holding surface 32a of the bonding head 32.

  The bonding head 32 has an arc-shaped holding surface 32a that is parallel to the sheet width direction and protrudes downward. The holding surface 32a has, for example, a weaker bonding force than the bonding surface (adhesive layer F2a) of the bonding sheet F5, and the surface protective film F4a of the bonding sheet F5 can be repeatedly bonded and peeled off.

  The bonding head 32 is tilted so as to be parallel to the length direction and follow the curvature of the holding surface 32a so as to be centered on an axis along the sheet width direction above the knife edge 31c. Tilt of the bonding head 32 is appropriately performed when the bonding sheet F5 is bonded and held, and when the bonding sheet F5 bonded and held is bonded to the liquid crystal panel P.

  The bonding head 32 is inclined so that the holding surface 32a faces downward and the curved one end side (right side in FIG. 6) of the holding surface 32a is on the lower side, and the curved one end side of the holding surface 32a is the knife edge 31c. The top end portion of the bonding sheet F5 at the separator peeling position 31e is stuck to the holding surface 32a. Then, the whole sheet piece of the bonding sheet F5 is bonded to the holding surface 32a by tilting the bonding head 32 while feeding the bonding sheet F5.

  The bonding head 32 can move up and down by a predetermined amount above the separator peeling position 31e and the first bonding position 11c, and can be appropriately moved between the separator peeling position 31e and the first bonding position 11c. The laminating head 32 is connected to a driving device 33 that enables driving when moving up and down, moving, and tilting.

  When the bonding head 32 adheres the bonding sheet F5 to the holding surface 32a, for example, after the front end of the bonding sheet F5 is bonded to the holding surface 32a, the engagement with the driving device 33 is cut. It can be tilted freely, and from this state, it is tilted passively with the feeding of the bonding sheet F5. When the bonding head 32 tilts until the entire bonding sheet F5 is bonded to the holding surface 32a, the tilting is locked by, for example, engaging the drive device 33 in this inclined posture, and the first bonding is performed in this state. It moves above the position 11c.

  When the bonding head 32 is bonded to the liquid crystal panel P, for example, the bonding head 32 is actively tilted by the operation of the driving device 33, and the liquid crystal panel P is bent along the curve of the holding surface 32a. The bonding sheet F5 is pressed against the upper surface of the sheet and bonded securely.

  Below the front end of the knife edge 31c, a first detection camera 34 is provided that detects the front end of the sheet piece of the bonding sheet F5 at the downstream side of the sheet conveyance. Detection information of the first detection camera 34 is sent to the control device 25. For example, when the first detection camera 34 detects the downstream end of the bonding sheet F5, the control device 25 temporarily stops the sheet conveying device 31, and then lowers the bonding head 32 to the holding surface 32a. The front-end | tip part of the bonding sheet | seat F5 is stuck.

  When the first detection camera 34 detects the downstream end of the bonding sheet F5 and temporarily stops the sheet conveying device 31, the control device 25 performs the cutting of the bonding sheet F5 by the first cutting device 31b. That is, the sheet conveyance path between the detection position by the first detection camera 34 (optical axis extension position of the first detection camera 34) and the cut position by the first cutting device 31b (the cutting blade advance / retreat position of the first cutting device 31b). Is the length of the sheet piece (first sheet piece F1m) of the bonding sheet F5.

  The first cutting device 31b is movable along the sheet conveyance path, and this movement changes the distance along the sheet conveyance path between the detection position by the first detection camera 34 and the cutting position by the first cutting device 31b. . The movement of the first cutting device 31b is controlled by the control device 25. For example, after the bonding sheet F5 is cut by the first cutting device 31b, this is wound by one sheet piece (first sheet piece F1m) of the bonding sheet F5. If the cut end deviates from a predetermined reference position when it is taken out, this deviation is corrected by the movement of the first cutting device 31b. In addition, you may respond | correspond to the cutting of the bonding sheet | seat F5 from which length differs by the movement of the 1st cutting device 31b.

  The 1st detection camera 34 also detects the fault mark marked on the bonding sheet | seat F5. The defect mark is marked by an inkjet or the like from the surface protective film F4a side at the defect point found on the first optical member sheet F1 when the raw roll R1 is manufactured. The bonding sheet F5 in which the defect mark is detected is not bonded to the liquid crystal panel P after being bonded to the bonding head 32, and is moved to the discarding position avoiding the first bonding position 11c to be a waste material sheet or the like. Paste repeatedly. In addition, when the defect mark is detected, there may be a step of cutting and discarding the bonding sheet F5 with the minimum width.

  When the bonding sheet F5 moves from the separator peeling position 31e to the first bonding position 11c, for example, both corners of the base end of the bonding sheet F5 bonded and held on the holding surface 32a are Images are captured by the pair of second detection cameras 35. In other words, the holding state of the first sheet piece F1m on the holding surface 32a is imaged by the pair of second detection cameras 35. Detection information of each second detection camera 35 is sent to the control device 25. Control device 25 is based on the image data of each second detection camera 35, for example, the horizontal direction of pasting sheet F5 to pasting head 32 (the moving direction of pasting head 32, its perpendicular direction, and the rotation direction about the vertical axis) ) Position. When the relative position of the bonding head 32 and the bonding sheet F5 is misaligned, the bonding head 32 performs alignment so that the position of the bonding sheet F5 is a predetermined reference position.

  The first bonding position 11c of the first rotary index 11 is provided with a pair of third detection cameras 36 for performing horizontal alignment of the liquid crystal panel P on the first bonding position 11c. Similarly, a pair of fourth detection cameras 37 for performing horizontal alignment on the second bonding position 11d of the liquid crystal panel P are provided at the second bonding position 11d of the first rotary index 11. Each third detection camera 36 images, for example, both corners on the left side in FIG. 1 of the glass substrate (first substrate P1) of the liquid crystal panel P. Each fourth detection camera 37 images, for example, both corners on the left side in FIG. 1 of the glass substrate of the liquid crystal panel P.

  A pair of fifth detection cameras 38 for performing horizontal alignment on the third bonding position 16 c of the liquid crystal panel P is provided at the third bonding position 16 c of the second rotary index 16. Each fifth detection camera 38 images, for example, both corners on the left side in FIG. 1 of the glass substrate of the liquid crystal panel P. Detection information of each of the detection cameras 34 to 38 is sent to the control device 25. It is also possible to use sensors in place of the detection cameras 34 to 38.

  On each of the rotary indexes 11 and 16, an alignment table (alignment stage) 39 for mounting the liquid crystal panel P and enabling horizontal alignment thereof is provided. The alignment table 39 is driven and controlled by the control device 25 based on the detection information of the detection cameras 34 to 38. Thereby, alignment of the liquid crystal panel P with respect to each rotary index 11, 16 (each bonding position 11c, 11d, 16c) is made.

  By bonding the bonding sheet F5 aligned by the bonding head 32 to the liquid crystal panel P, the bonding variation of the sheet piece FXm is suppressed, and the optical axis direction of the optical member F1X with respect to the liquid crystal panel P is reduced. The accuracy is improved and the clarity and contrast of the optical display device are increased.

  FIG. 13 is an explanatory diagram of a method of bonding the first sheet piece F1m to the liquid crystal panel P.

  In FIG. 13, the symbol Lc is a cutting side of the first sheet piece F1m. Reference sign Lp is one side of the optical display component. Moreover, the code | symbol Lp1 is a part (one side of a rectangular cutting line) of the cutting line at the time of cutting out the 1st optical member F11 from the 1st sheet piece F1m along the outer periphery of the display area P4 of the 1st sheet piece F1m. ).

  The drive device 33 can relatively move the bonding head 32 and the alignment table 39. The driving device 33 is a bonding head so that the cutting side Lc of the first sheet piece F1m cut by the first cutting device 31b and the one side Lp of the liquid crystal panel P are aligned or parallel according to the control signal of the control device 25. 32 and the alignment table 39 are moved relative to each other. For example, the driving device 33 moves the bonding head 32 and the alignment table 39 in a first direction parallel to the placement surface 39a of the liquid crystal panel P in the alignment table 39, in a first direction parallel to the placement surface 39a. Relative movement is performed in a second direction perpendicular to the first direction, a third direction that is a normal direction of the placement surface 39a, and a θ direction around the axis along the third direction. In the present embodiment, the driving device 33 moves only the bonding head 32 without moving the alignment table 39.

  Note that the form of relative movement by the drive device 33 is not limited to this. For example, by moving only the alignment table 39 without moving the bonding head 32, or by moving both the bonding head 32 and the alignment table 39, the bonding head 32 and the alignment table 39 are relatively moved. The present invention can also be applied to the forms to be made.

  In the present embodiment, an axis Lp1 (L4) that forms a predetermined angle γ with respect to the average optical axis V3 is a reference for cutting out the first optical member F11 from the first sheet piece F1m.

  Further, a second cutting device 50 for separating the facing portion of the display area P4 of the first sheet piece F1m and the surplus portion outside the facing portion is provided downstream of the first cutting device 31b in the transport direction. ing.

  As shown in FIG. 6, the second cutting device 50 detects, on the backlight side of the liquid crystal panel P, the outer peripheral edge of the display area P4 by the detection unit such as the camera 151 and the like along the outer peripheral edge of the display area P4. Then, the first sheet piece F1m is cut.

  Similarly, on the display surface side of the liquid crystal panel P, the second cutting device 50 detects the outer peripheral edge of the display area P4 with a detection unit such as a camera, and the third sheet along the outer peripheral edge of the display area P4. Cut the piece F3m.

  Outside the display area P4, a frame portion G having a predetermined width for arranging a sealant or the like for bonding the first substrate P1 and the second substrate P2 is provided, and within the width of the frame portion G, by the second cutting device 50. Laser cut is made.

  Thus, the 2nd cutting device 50 cut | disconnects the opposing part of the display area P4 of the 1st sheet piece F1m, and the excess part of the outer side of the said opposing part, and the magnitude | size corresponding to the display area P4 from the 1st sheet piece F1m. The first optical member F11 is cut out.

  The same operation is also performed in the second bonding apparatus and the third bonding apparatus. That is, after cutting out the second sheet piece F2m from the second optical member sheet F2 (slant angle cut) and bonding the second sheet piece F2m to the liquid crystal panel P, the second sheet piece F2m and the facing portion of the display area P4 A surplus portion outside the facing portion is cut off, and a second optical member F12 having a size corresponding to the display area P4 is cut out from the second sheet piece F2m. Moreover, after cutting out the 3rd sheet piece F3m from the 3rd optical member sheet | seat F3 (bevel cut), and bonding the 3rd sheet piece F3m to the liquid crystal panel P, the opposing part of the display area P4 of the 3rd sheet piece F3m and A surplus portion outside the facing portion is cut off, and a third optical member F13 having a size corresponding to the display area P4 is cut out from the third sheet piece F3m.

  Thus, an optical display device in which the liquid crystal panel P and the optical member F1X overlapping the liquid crystal panel P are bonded can be obtained.

(Optical display device production method)
The production method of the optical display device in the present embodiment includes a first step of unwinding the belt-shaped optical member sheet FX wider than the display region P4 of the liquid crystal panel P together with the separator sheet F3a from the raw roll R1, and the optical member. Obtaining the in-plane distribution data of the optical axis of the sheet FX, calculating the average direction of the optical axis in the plane of the optical member sheet FX based on the in-plane distribution data of the optical axis of the optical member sheet FX; A second step of adjusting the cutting direction of the optical member sheet FX so that the direction of the average optical axis in the plane of the optical member sheet FX forms a target angle with respect to the cutting direction of the optical member sheet FX; In the cut direction, the optical member sheet FX is cut larger than the display area P4 in a state where the separator sheet F3a is left on the optical member sheet FX to obtain a sheet piece FXm. Step 3, the fourth step of peeling the sheet piece FXm from the separator sheet F3a, and holding the sheet piece FXm on the arc-shaped holding surface 32a of the bonding head 32 and holding the sheet piece FXm on the holding surface 32a In order to bond the sheet piece FXm to the liquid crystal panel P, the fifth step of tilting the bonding head 32 along the curvature of the holding surface 32a, the cutting side Lc of the cut sheet piece FXm, and the liquid crystal panel P The bonding head 32 and the alignment table 39 are moved relative to each other so that the one side Lp matches or is parallel, and the bonding head 32 is driven to hold and bond the sheet piece FXm by the tilting. Step 6 is separated from the facing portion of the sheet piece FXm with the display area P4 and the surplus portion outside the facing portion. Comprising a seventh step of cutting the optical member F1X of size corresponding to the display region P4, the.
Hereinafter, this will be specifically described with reference to FIG.

  FIG. 14 is a flowchart showing a method for producing an optical display device.

  First, as a first step, a strip-shaped first optical member sheet F1 having a width wider than the display area P4 of the liquid crystal panel P is unwound together with the separator sheet F3a from the raw roll R1 (step S1 shown in FIG. 14).

  Next, as a second step, the control device 25 acquires in-plane distribution data of the optical axis of the first optical member sheet F1 stored in the storage device 24, and adjusts the cutting direction of the first optical member sheet F1. (Step S2 shown in FIG. 14).

  Specifically, the average direction of the optical axis in the plane of the first optical member sheet F1 is calculated based on the in-plane distribution data of the optical axis of the first optical member sheet F1. Next, the cutting direction of the first optical member sheet F1 is adjusted so that the direction of the average optical axis in the plane of the first optical member sheet F1 forms a target angle with respect to the cutting direction of the first optical member sheet F1. To do.

  For example, the control device 25 calculates the average optical axis direction in the plane of the first optical member sheet F1 based on the data of the in-plane distribution of the optical axis of the first optical member sheet F1, and the first optical member The first cutting device 31b is rotated so that the direction of the average optical axis in the plane of the sheet F1 forms a target angle with respect to the cutting direction Vc of the first optical member sheet F1. In the present embodiment, as shown in FIG. 12B, an axis (axis L4) that forms a predetermined angle γ with respect to the average optical axis V3 is a reference for cutting out the first optical member F11 from the first optical member sheet F1. The first cutting device 31b is rotated so that the cutting direction of the first optical member sheet F1 is adjusted.

  Here, the direction of the average optical axis in the plane of the first optical member sheet F1 is calculated based on the distribution of the optical axes in the width direction of the first optical member sheet F1 detected by the inspection device 42. When the first optical member F11 is cut out from the first optical member sheet F1, the optical axis data used for the calculation may be the optical axis data of the portion where the first optical member F11 is cut out. The optical axis data used for the calculation may be data on the optical axis upstream of the portion cut out as the first optical member F11. Since the direction of the optical axis does not change so much in the longitudinal direction of the first optical member sheet F1, if the direction of the optical axis is obtained at some position in the longitudinal direction of the first optical member sheet F1, the direction of the optical axis The direction can be used as the direction of the optical axis at an arbitrary position in the longitudinal direction of the first optical member sheet F1. In this case, the average optical axis direction in the width direction of the first optical member sheet F1 is calculated at a plurality of positions in the longitudinal direction of the first optical member sheet F1, and the average optical axis direction calculated at each position is calculated. May be calculated as the average optical axis direction in the plane of the first optical member sheet F1.

  Next, as a third step, the first optical member sheet F1 is cut larger than the display region P4 while leaving the separator sheet F3a in the adjusted cutting direction to obtain a first sheet piece F1m (shown in FIG. 14). Step S3).

  Next, as a fourth step, the first sheet piece F1m is peeled from the separator sheet F3a (step S4 shown in FIG. 14).

  Next, as a fifth step, the first sheet piece F1m is attached to and held on the arc-shaped holding surface 32a of the bonding head 32, and the first sheet piece F1m held on the holding surface 32a is liquid crystal panel P. The bonding head 32 is tilted so as to follow the curvature of the holding surface 32a (step S5 shown in FIG. 14).

  Next, as a sixth step, the bonding head 32 and the alignment table 39 are relatively moved so that the cut side Lc of the cut first sheet piece F1m and the one side Lp of the liquid crystal panel P coincide with each other or are parallel to each other. . Further, the bonding head 32 is driven to hold and bond the first sheet piece F1m by the tilting (step S6 shown in FIG. 14).

  For example, the relative movement between the bonding head 32 and the alignment table 39 is performed by moving only the bonding head 32 without moving the alignment table 39. Specifically, the bonding head 32 is moved in a first direction parallel to the placement surface 39a of the liquid crystal panel P in the alignment table 39, a second direction parallel to the placement surface 39a and orthogonal to the first direction, Relative movement is made in the third direction, which is the normal direction of the mounting surface 39a, and in the θ direction around the axis along the third direction.

  Thereafter, as a seventh step, the facing portion of the first sheet piece F1m facing the display area P4 and the surplus portion outside the facing portion are separated, and the first sheet piece F1m has a size corresponding to the display area P4. One optical member F11 is cut out (window cut) (step S7 shown in FIG. 14).

  The same process is performed on the second sheet piece F2m and the third sheet piece F3m, and the second optical member F12 and the third optical member F13 each having a size corresponding to the display area P4 are cut out (window cut).

  Through the above steps, an optical display device in which the liquid crystal panel P and the optical member F1X overlapping the liquid crystal panel P are bonded is obtained.

  According to the production method of the film bonding system 1 and the optical display device of the present embodiment, the first optical member based on the in-plane distribution data of the optical axis of the first optical member sheet F1 stored in the storage device 24 in advance. The cutting direction of the sheet F1 is adjusted. In this adjustment, the cutting direction of the first optical member sheet F1 is such that the direction of the average optical axis in the plane of the first optical member sheet F1 forms a target angle with respect to the cutting direction of the first optical member sheet F1. Is adjusted. And the 1st optical member intermediate body sheet | seat F1m is cut out from the 1st optical member sheet | seat F1 by the cutting direction adjusted in this way. Then, the bonding head 32 and the alignment table 39 are relatively moved so that the cut side Lc of the cut first optical member intermediate sheet F1m and the one side Lp of the liquid crystal panel P coincide with each other or are parallel to each other. Then, the portion of the first sheet piece F1m facing the display region P4 and the excess portion outside the facing portion are separated, and the first optical member F11 having a size corresponding to the display region P4 is cut out from the first sheet piece F1m. A so-called window cut is performed. Similarly, the second optical member F12 and the third optical member F13 having a size corresponding to the display area P4 are cut out from the second sheet piece F2m and the third sheet piece F3m, respectively. Thereby, the optical display device by which the liquid crystal panel P and the optical member F1X which overlaps with the said liquid crystal panel P are bonded together is obtained. Therefore, it is possible to reduce variations in the optical axis that occur in the optical display device.

  According to this configuration, the belt-shaped optical member sheet FX having a width corresponding to the display region P4 is cut into a predetermined length to form the sheet piece FXm, and the sheet piece FXm is arcuately held by the tilting of the bonding head 32. In addition, the sheet piece FXm is bonded to the liquid crystal panel P by the tilting of the bonding head 32, and then the window cut is performed to suppress the dimensional variation and bonding variation of the sheet piece FXm, and the display area P4. The peripheral frame G can be reduced to enlarge the display area and downsize the device.

  Moreover, continuous bonding of the sheet pieces FXm is facilitated, and the production efficiency of the optical display device can be increased.

  Further, the sheet piece FXm can be smoothly held by the tilt of the arc-shaped holding surface 32a, and the sheet piece FXm can be reliably bonded to the liquid crystal panel P by the tilt of the arc-shaped holding surface 32a.

  Moreover, the said film bonding system 1 makes the said knife edge 31c peel the said sheet piece FXm from the said separator sheet F3a by making the bonding surface with the said liquid crystal panel P face down, and the said bonding head 32 is the said. An optical member by moving between the peeling position and the bonding position in a state where the upper surface opposite to the bonding surface is bonded to and held on the holding surface 32a and the bonding surface faces downward. The sheet FX is conveyed with the bonding surface on the adhesive layer F2a side facing downward, and it is possible to suppress the occurrence of bonding failure by suppressing scratches on the bonding surface of the optical member sheet FX, adhesion of foreign matters, and the like.

  Moreover, the said film bonding system 1 carries in the said liquid crystal panel P in a carrying-in position (each rotary starting position 11a, 16a), the said bonding position (each bonding position 11c, 11d, 16c), and an unloading position (each rotary terminal position). 11b, 16b) is provided with the rotary indexes 11, 16 to be moved efficiently, and the transport direction of the liquid crystal panel P can be switched efficiently, and the rotary indexes 11, 16 can also be suppressed as part of the line. Installation flexibility can be increased.

In addition, this invention is not restricted to the said embodiment, For example, you may make it perform relative alignment with liquid crystal panel P and the bonding sheet | seat F5 by one of the bonding head 32 or the alignment table 39. FIG.
The configuration in the above embodiment is an example of the present invention, and various modifications can be made without departing from the spirit of the invention, including the component configuration, structure, shape, size, number, arrangement, and the like.

(Second embodiment)
Hereinafter, another embodiment of the present invention will be described with reference to the drawings. This embodiment demonstrates the film bonding system which comprises the one part as a production system of an optical display device.

  FIG. 16 is a schematic configuration diagram of the film bonding system 1 of the second embodiment. In FIG. 16, components common to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In addition, regarding the contents related to FIGS. 2 to 4 of the first embodiment, the description of the contents common to the present embodiment is omitted.

  In the present embodiment, the first, second, and third optical members F11, F12, and F13 are first, second, and third sheet pieces F1m, F2m, and F3m (hereinafter collectively referred to as sheet pieces FXm). In this case, the excess portion outside the display area is cut off.

  FIG. 17 is a plan view (top view) of the film bonding system 1A. Hereinafter, 1 A of film bonding systems are demonstrated with reference to FIG. 16, FIG. In the figure, an arrow F indicates the transport direction of the liquid crystal panel P. In the following description, the upstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport upstream side, and the downstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport downstream side.

  1 A of film bonding systems make the predetermined position of the main conveyor 5 the starting point 5a and the end point 5b of a bonding process. The film laminating system 1A conveys the liquid crystal panel P from the starting point 5a to the first and second sub-conveyors 6 and 7 extending in the direction perpendicular to the main conveyor 5 and from the starting point 5a to the first starting position 6a of the first sub-conveyor 6. The first transport device 8, the cleaning device 9 provided on the first sub-conveyor 6, the first rotary index 11 provided on the panel transport downstream side of the first sub-conveyor 6, and the first of the first sub-conveyor 6. A second transport device 12 for transporting the liquid crystal panel P from the final position 6b to the first rotary start position 11a of the first rotary index 11, and first and second bonding devices 13 provided around the first rotary index 11, 15, a film peeling device 14 and a first cutting device 51.

  Moreover, 1 A of film bonding systems are the 2nd rotary index 16 provided in the panel conveyance downstream side of the 1st rotary index 11, and the 2nd of the 2nd rotary index 16 from the 1st rotary terminal position 11b of the 1st rotary index 11. A third transport device 17 that transports the liquid crystal panel P to the rotary starting position 16a, a third bonding device 18 and a second cutting device 52 that are provided around the second rotary index 16, and a panel transport of the second rotary index 16. A second sub-conveyor 7 provided on the downstream side, a fourth conveyance device 21 for conveying the liquid crystal panel P from the second rotary end position 16b of the second rotary index 16 to the second start position 7a of the second sub-conveyor 7, Liquid crystal panel from the second terminal position 7b of the second sub-conveyor 7 to the end point 5b of the main conveyor 5 And a fifth transport device 22 for transporting the P.

  The film laminating system 1A sequentially performs predetermined processing on the liquid crystal panel P while transporting the liquid crystal panel P using the lines formed by the driven main conveyor 5, the sub conveyors 6 and 7, and the rotary indexes 11 and 16. Apply. The liquid crystal panel P is conveyed on the line with its front and back surfaces being horizontal.

  The liquid crystal panel P is conveyed, for example, in the main conveyor 5 with the short side of the display area P4 along the conveying direction, and in each of the sub conveyors 6 and 7 orthogonal to the main conveyor 5, the long side of the display area P4 is conveyed in the conveying direction. In each rotary index 11, 16, the long side of the display area P 4 is conveyed in a direction along the radial direction of each rotary index 11, 16. Reference numeral 5c in the figure indicates a rack that flows on the main conveyor 5 in correspondence with the liquid crystal panel P.

  A sheet piece (corresponding to the optical member F1X) of the bonding sheet F5 cut out to a predetermined length from the belt-shaped optical member sheet FX is bonded to the front and back surfaces of the liquid crystal panel P. Each part of 1 A of film bonding systems is integratedly controlled by the control apparatus 25 as an electronic control apparatus.

The first transport device 8 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions.
For example, the first transport device 8 transports the liquid crystal panel P held by suction to the first start position 6a (the left end portion in FIG. 17) of the first sub-conveyor 6 in a horizontal state, and releases the suction at the position. Then, the liquid crystal panel P is delivered to the first sub-conveyor 6.

  The cleaning device 9 is, for example, a water-washing type that performs brushing and rinsing of the front and back surfaces of the liquid crystal panel P and then drains the front and back surfaces of the liquid crystal panel P. Note that the cleaning device 9 may be a dry type that performs static electricity removal and dust collection on the front and back surfaces of the liquid crystal panel P.

  The second transport device 12 holds the liquid crystal panel P and transports it freely in the vertical and horizontal directions. The second transport device 12 transports, for example, the liquid crystal panel P held by suction to the first rotary starting position 11a of the first rotary index 11 in a horizontal state, releases the suction at the position, and moves the liquid crystal panel P to the first position. Transfer to one rotary index 11.

  The first rotary index 11 is a disk-shaped rotary table having a rotation axis along the vertical direction, and the carry-in position from the second transport device 12 (the left end portion in plan view in FIG. 17) is defined as the first rotary initial position 11a. Drive clockwise. The 1st rotary index 11 makes the position (upper end part of FIG. 17) rotated 90 degrees clockwise from the 1st rotary first departure position 11a the 1st bonding position 11c. At the first bonding position 11c, the first sheet piece F1m on the backlight side by the first bonding apparatus 13 is bonded.

  The first sheet piece F1m is a sheet piece of the first optical member sheet F1 having a size larger than the display area of the liquid crystal panel P. The 1st optical member bonding body PA1 is formed when the 1st sheet piece F1m is bonded by the 1st bonding apparatus 13 on the surface one side of liquid crystal panel P. As shown in FIG.

  The 1st rotary index 11 makes the film peeling position 11e the position (upper right end part of FIG. 17) rotated 45 degrees clockwise from the 1st bonding position 11c. At the film peeling position 11e, the film peeling device 14 peels the surface protection film F4a of the first sheet piece F1m.

  The 1st rotary index 11 makes the position (right end position of FIG. 17) rotated 45 degrees clockwise from the film peeling position 11e the 2nd bonding position 11d. The second sheet piece F2m on the backlight side is bonded by the second bonding apparatus 15 at the second bonding position 11d.

  The second sheet piece F2m is a sheet piece of the second optical member sheet F2 having a size larger than the display area of the liquid crystal panel P. The 2nd optical member bonding body PA2 is formed by the 2nd bonding apparatus 15 bonding the 2nd sheet piece F2m to the surface at the side of the 1st sheet piece F1m of 1st optical member bonding body PA1.

  The 1st rotary index 11 makes the position (lower end part of FIG. 17) rotated 90 degrees clockwise from the 2nd bonding position 11d the 1st rotary terminal position (1st cutting position) 11b.

  The first rotary terminal position 11b is a first cutting position at which the first sheet piece F1m and the second sheet piece F2m are cut by the first cutting device 51. The 1st cutting device 51 puts together the excess part arrange | positioned on the outer side of the part facing the display area of liquid crystal panel P from each of the 1st sheet piece F1m bonded to liquid crystal panel P, and the 2nd sheet piece F2m. The first optical member F11 made of the first optical member sheet F1 and the second optical member F12 made of the second optical member sheet F2 are formed as optical members having a size corresponding to the display area of the liquid crystal panel P.

  By bonding the first sheet piece F1m and the second sheet piece F2m to the liquid crystal panel P and then cutting them together, the first optical member F11 and the second optical member F12 are not misaligned, and the outside of the display area P4. The first optical member F11 and the second optical member F12 that match the shape of the periphery are obtained. Moreover, the cutting process of the 1st sheet piece F1m and the 2nd sheet piece F2m is also simplified.

  The first optical device F11 and the first optical member F11 and the second surface piece of the liquid crystal panel P are separated from the first and second surfaces of the liquid crystal panel P by separating the excess portions of the first sheet piece F1m and the second sheet piece F2m from the second optical member bonding body PA2 by the first cutting device 51. 3rd optical member bonding body PA3 formed by bonding 2 optical member F12 is formed. The surplus part cut off from the first sheet piece FX1 and the second sheet piece F2m is peeled off and collected from the liquid crystal panel P by a peeling device (not shown). 3rd optical member bonding body PA3 is carried out by the 3rd conveying apparatus 17 in the 1st rotary terminal position 11b.

  The 3rd conveying apparatus 17 hold | maintains liquid crystal panel P (3rd optical member bonding body PA3), and conveys it freely in a vertical direction and a horizontal direction. The third transport device 17 transports, for example, the liquid crystal panel P held by suction to the second rotary starting position 16a of the second rotary index 16, and reverses the front and back of the liquid crystal panel P during this transport, so that the second rotary starting position The suction is released at 16 a and the liquid crystal panel P is transferred to the second rotary index 16.

  The second rotary index 16 is a disk-shaped rotary table having a rotation axis along the vertical direction, and the carry-in position from the third transport device 17 (the upper end portion in plan view in FIG. 17) is defined as the second rotary first start position 16a. Drive clockwise. The 2nd rotary index 16 makes the position (right end part of FIG. 17) rotated 90 degrees clockwise from the 2nd rotary initial position 16a the 3rd bonding position 16c. The third sheet piece F3m on the display surface side is bonded by the third bonding apparatus 18 at the third bonding position 16c.

  The third sheet piece F3m is a sheet piece of the third optical member sheet F3 having a size larger than the display area of the liquid crystal panel P. The third bonding device 18 changes the surface of the liquid crystal panel P to the other surface (the surface opposite to the surface on which the first optical member F11 and the second optical member F12 of the third optical member bonding body PA3 are bonded). The fourth optical member bonding body PA4 is formed by bonding the three sheet pieces F3m.

  The 2nd rotary index 16 makes the position (lower end part of FIG. 17) rotated 90 degrees clockwise from the 3rd bonding position 16c the 2nd cutting position 16d. At the second cutting position 16d, the third sheet piece F3m is cut by the second cutting device 52. The 2nd cutting device 52 cut | disconnects the surplus part arrange | positioned outside the part facing the display area of liquid crystal panel P from the 3rd sheet piece F3m bonded by liquid crystal panel P, and respond | corresponds to the display area of liquid crystal panel P An optical member (third optical member F13) having a size to be formed is formed.

  The third optical member F13 is bonded to the other side of the front and back surfaces of the liquid crystal panel P by separating the excess portion of the third sheet piece F3m from the fourth optical member bonding body PA4 by the second cutting device 52, and the liquid crystal The 5th optical member bonding body PA5 formed by bonding the 1st optical member F11 and the 2nd optical member F12 to the surface one side of the panel P is formed. The surplus part cut off from the third sheet piece F3m is peeled off and collected from the liquid crystal panel P by a peeling device (not shown).

  Here, the 1st cutting device 51 and the 2nd cutting device 52 are CO2 laser cutters, for example. The 1st cutting device 51 and the 2nd cutting device 52 cut | disconnect endlessly the sheet piece FXm bonded by liquid crystal panel P along the outer periphery of the display area P4. The first cutting device 51 and the second cutting device 52 are connected to the same laser output device 53. By the first cutting device 51, the second cutting device 52, and the laser output device 53, the excess portion disposed outside the portion facing the display region P4 is separated from the sheet piece FXm, and an optical having a size corresponding to the display region P4. The cutting part which forms member FX is comprised. Since the laser output required for cutting each of the sheet pieces F1m, F2m, and F3m is not so large, in this embodiment, the high-power laser beam output from the laser output device 53 is branched into two and the first cutting device. 51 and the second cutting device 52.

  The second rotary index 16 has a position (left end portion in FIG. 17) rotated 90 ° clockwise from the second cutting position 16d as a second rotary terminal position 16b. The fifth optical member bonding body PA5 is carried out by the fourth transport device 21 at the second rotary terminal position 16b.

  The 4th conveying apparatus 21 hold | maintains liquid crystal panel P (5th optical member bonding body PA5), and conveys it freely in a vertical direction and a horizontal direction. For example, the fourth transport device 21 transports the liquid crystal panel P held by suction to the second starting position 7a of the second sub-conveyor 7, releases the suction at the second starting position 7a, and moves the liquid crystal panel P to the second sub-conveying position 7a. Delivered to the conveyor 7.

  The fifth transport device 22 holds the liquid crystal panel P (fifth optical member bonding body PA5) and transports it freely in the vertical direction and the horizontal direction. For example, the fifth transport device 22 transports the liquid crystal panel P held by suction to the end point 5b of the main conveyor 5, releases the suction at the end point 5b, and delivers the liquid crystal panel P to the main conveyor 5.

  An unillustrated bonding inspection position is installed on the transport path of the liquid crystal panel P (fifth optical member bonding body PA5) after the second rotary terminal position 16b, and film bonding is performed at this bonding inspection position. An inspection (not shown) of the workpiece (liquid crystal panel P) subjected to the inspection (inspection of whether or not the position of the optical member F1X is appropriate (whether the positional deviation is within the tolerance range) or the like) is performed. The work determined that the position of the optical member F1X with respect to the liquid crystal panel P is not appropriate is discharged out of the system by a payout unit (not shown).

  With the above, the bonding process by the film bonding system 1A is completed.

  Hereinafter, the detail of the 1st bonding apparatus 13 is demonstrated with reference to FIG. In addition, the 2nd and 3rd bonding apparatuses 15 and 18 also have the same structure, The detailed description is abbreviate | omitted.

  The 1st bonding apparatus 13 is a sheet piece (1st sheet | seat) of the bonding sheet | seat F5 cut into the predetermined size in the 1st optical member sheet | seat F1 with respect to the upper surface of liquid crystal panel P conveyed to the 1st bonding position 11c. Bonding of piece F1m) is performed.

  The 1st bonding apparatus 13 is a sheet | seat which conveys the 1st optical member sheet | seat F1 along the longitudinal direction, unwinding the 1st optical member sheet | seat F1 from the original fabric roll R1 in which the 1st optical member sheet | seat F1 was wound. The conveyance device 31 and the sheet conveyance device 31 hold the sheet piece (first sheet piece F1m) of the bonding sheet F5 cut out from the first optical member sheet F1, and the sheet piece is conveyed to the first bonding position 11c. And a bonding head 32 for bonding to the upper surface of the liquid crystal panel P.

  The sheet conveying device 31 conveys the bonding sheet F5 using the separator sheet F3a as a carrier, holds the raw fabric roll R1 around which the belt-shaped first optical member sheet F1 is wound, and the first optical member sheet F1. The unwinding portion 31a that is fed out along the longitudinal direction, the cut portion 31b that half-cuts the first optical member sheet F1 that is unwound from the raw roll R1, and the first optical member sheet F1 that is half-cut at an acute angle. A knife edge (peeling part) 31c that winds and separates the bonding sheet F5 from the separator sheet F3a, and a winding part 31d that holds the separator roll R2 that winds up the separator sheet F3a that has become independent through the knife edge 31c. Have.

  In addition, although illustration is abbreviate | omitted, the sheet conveying apparatus 31 has a some guide roller which winds the 1st optical member sheet | seat F1 along a predetermined conveyance path | route. The first optical member sheet F1 has a width of the display area P4 of the liquid crystal panel P (a long side or a short side of the display area P4 in the horizontal direction (sheet width direction) orthogonal to the conveyance direction. In this embodiment, the width is wider than the long side length of the display area P4.

  The unwinding unit 31a positioned at the starting point of the sheet conveying device 31 and the winding unit 31d positioned at the ending point of the sheet conveying device 31 are driven in synchronization with each other, for example. Thereby, the winding-up part 31d winds up the separator sheet F3a which passed through the knife edge 31c, while the unwinding part 31a delivers the 1st optical member sheet | seat F1 to the conveyance direction. Hereinafter, the upstream side in the transport direction of the first optical member sheet F1 (separator sheet F3a) in the sheet transport apparatus 31 is referred to as the upstream side of the sheet transport, and the downstream side in the transport direction is referred to as the downstream side of the sheet transport.

  The cut part 131b is the length of the display region P4 in the length direction in which the first optical member sheet F1 is orthogonal to the sheet width direction (the length of the other side of the long side and the short side of the display region P4). In this embodiment, every time a length longer than the short side length of the display region P4 is extended, a part in the thickness direction of the first optical member sheet F1 is cut over the entire width along the sheet width direction. (Has a half cut) Thereby, the sheet piece (1st sheet piece F1m) of the bonding sheet | seat F5 larger than the display area P4 of liquid crystal panel P is cut out from the 1st optical member sheet | seat F1.

  The cut portion 131b is cut so that the first optical member sheet F1 (separator sheet F3a) is not broken by the tension acting during the conveyance of the first optical member sheet F1 (so that a predetermined thickness remains on the separator sheet F3a). The advancing / retreating position of the blade is adjusted, and the half cut is performed to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a. In addition, you may use the laser apparatus replaced with a cutting blade.

  The first optical member sheet F1 after the half cut is cut along the entire width in the sheet width direction of the first optical member sheet F1 by cutting the optical member body F1a and the surface protection film F4a in the thickness direction. Is formed. The first optical member sheet F1 is divided into sections having a length corresponding to the short side length of the display region P4 in the longitudinal direction by the cut line. Each section is one sheet piece (first sheet piece F1m) in the bonding sheet F5.

  The knife edge 31c is positioned below the first optical member sheet F1 conveyed substantially horizontally from the left side to the right side in FIG. 18, and extends at least over the entire width in the sheet width direction of the first optical member sheet F1. The knife edge 31c is wound so as to be in sliding contact with the separator sheet F3a side of the first optical member sheet F1 after the half cut.

  The knife edge 31c wraps the first optical member sheet F1 at an acute angle at its acute-angled tip. When the first optical member sheet F1 is folded at an acute angle at the tip of the knife edge 31c, the separator sheet F3a is peeled from the first sheet piece F1m. At this time, the adhesive layer F2a (bonding surface with the liquid crystal panel P) of the first sheet piece F1m faces downward. Immediately above the tip of the knife edge 31c is a separator peeling position 31e, and the arc-shaped holding surface 32a of the bonding head 32 is in contact with the tip of the knife edge 31c from above, so that the surface protection film of the first sheet piece F1m F4a (surface opposite to the bonding surface) is bonded to the holding surface 32a of the bonding head 32.

  The bonding head 32 has an arc-shaped holding surface 32a that is parallel to the sheet width direction and protrudes downward. The holding surface 32a has, for example, a weaker bonding force than the bonding surface (adhesive layer F2a) of the bonding sheet F5, and the surface protective film F4a of the first sheet piece F1m can be repeatedly bonded and peeled off.

  The bonding head 32 is tilted so as to be parallel to the length direction and follow the curvature of the holding surface 32a so as to be centered on an axis along the sheet width direction above the knife edge 31c. Tilt of the bonding head 32 is appropriately performed when the first sheet piece F1m is bonded and held, and when the first sheet piece F1m bonded and held is bonded to the liquid crystal panel P.

  The bonding head 32 is inclined so that the holding surface 32a faces downward and the curved one end side (right side in FIG. 18) of the holding surface 32a is on the lower side, and the curved one end side of the holding surface 32a is the knife edge 31c. The top end of the first sheet piece F1m at the separator peeling position 31e is stuck to the holding surface 32a. Then, the whole 1st sheet piece F1m is stuck by the holding surface 32a by tilting the bonding head 32, paying out the 1st sheet piece F1m.

  The bonding head 32 can move up and down by a predetermined amount above the separator peeling position 31e and the first bonding position 11c, and can be appropriately moved between the separator peeling position 31e and the first bonding position 11c. The laminating head 32 is connected to a driving device 33 that enables driving when moving up and down, moving, and tilting.

  When bonding the first sheet piece F1m to the holding surface 32a, the bonding head 32 is engaged with the driving device 33 after, for example, bonding the tip of the first sheet piece F1m to the holding surface 32a. The sheet is cut and tilted freely, and from this state, it is tilted passively as the first sheet piece F1m is fed. When the bonding head 32 tilts until the entire first sheet piece F1m is adhered to the holding surface 32a, the tilting is locked by, for example, engaging the driving device 33 in this inclined posture, and the first bonding is performed in this state. It moves above the alignment position 11c.

  When bonding the first sheet piece F1m bonded and held to the liquid crystal panel P, the bonding head 32 is actively tilted, for example, by the operation of the driving device 33, and the liquid crystal panel along the curve of the holding surface 32a. The 1st sheet piece F1m is pressed on the upper surface of P, and it bonds together reliably.

  A first detection camera 34 is provided below the front end of the knife edge 31c to detect the front end of the bonded sheet F5 at the downstream side of the sheet conveyance in the portion. Detection information of the first detection camera 34 is sent to the control device 25. For example, when the first detection camera 34 detects the downstream end of the bonding sheet F5, the control device 25 temporarily stops the sheet conveying device 31, and then lowers the bonding head 32 to the holding surface 32a. The front-end | tip part of the bonding sheet | seat F5 is stuck.

  When the first detection camera 34 detects the downstream side end of the bonding sheet F5 and temporarily stops the sheet conveying device 31, the control device 25 performs the cutting of the bonding sheet F5 by the cutting unit 131b. That is, the distance along the sheet conveyance path between the detection position by the first detection camera 34 (the optical axis extension position of the first detection camera 34) and the cut position by the cut part 131b (the cutting blade advance / retreat position of the cut part 131b) is This corresponds to the length of the sheet piece (first sheet piece F1m) of the bonding sheet F5.

  The cut part 131b is movable along the sheet conveyance path, and the distance along the sheet conveyance path between the detection position by the first detection camera 34 and the cut position by the cut part 131b is changed by this movement. The movement of the cut part 131b is controlled by the control device 25, for example, when the sheet piece (first sheet piece F1m) of the bonding sheet F5 is unwound after cutting the bonding sheet F5 by the cutting part 131b, When the cut end deviates from a predetermined reference position, this shift is corrected by moving the cut portion 131b. In addition, you may respond | correspond to the cut of the bonding sheet | seat F5 from which length differs by the movement of the cut part 131b.

  The 1st detection camera 34 also detects the fault mark marked on the bonding sheet | seat F5. The defect mark is marked by an inkjet or the like from the surface protective film F4a side at the defect point found on the first optical member sheet F1 when the raw roll R1 is manufactured. The bonding sheet F5 in which this defect mark was detected (the first sheet piece F1m including the defect) was bonded to the bonding head 32 and then not bonded to the liquid crystal panel P, and the first bonding position 11c was avoided. Move to the disposal position (disposal position) and paste it on the waste material sheet. In addition, when the defect mark is detected, there may be a step of cutting and pasting the portion including the defect of the bonding sheet F5 with the minimum width.

  Note that the disadvantage of the optical member sheet FX is, for example, a portion where a foreign substance consisting of at least one of solid, liquid, and gas is present inside the optical member sheet FX, and unevenness and scratches on the surface of the optical member sheet FX. The portion is a portion that becomes a bright spot due to distortion of the optical member sheet FX, material deviation, or the like.

  When the bonding head 32 moves from the separator peeling position 31e to the first bonding position 11c, for example, both corner portions of the base end portion of the first sheet piece F1m bonded and held on the holding surface 32a with respect to the tip portion are The images are respectively captured by the pair of second detection cameras 35. Detection information of each second detection camera 35 is sent to the control device 25. For example, based on the imaging data of each second detection camera 35, the control device 25 is configured so that the horizontal direction of the first sheet piece F <b> 1 m with respect to the bonding head 32 (the moving direction of the bonding head 32 and its orthogonal direction and the rotation direction about the vertical axis) ) Position. When there is a shift in the relative position between the bonding head 32 and the first sheet piece F1m, the bonding head 32 performs alignment so that the position of the first sheet piece F1m is a predetermined reference position.

  The first bonding position 11c of the first rotary index 11 is provided with a pair of third detection cameras 36 for performing horizontal alignment of the liquid crystal panel P on the first bonding position 11c. Similarly, a pair of fourth detection cameras 37 for performing horizontal alignment on the second bonding position 11d of the liquid crystal panel P are provided at the second bonding position 11d of the first rotary index 11. Each third detection camera 36 images, for example, both corners on the left side in FIG. 17 of the glass substrate (first substrate P1) of the liquid crystal panel P. For example, each fourth detection camera 37 images both corners on the left side in FIG. 17 of the glass substrate of the liquid crystal panel P.

  A pair of fifth detection cameras 38 for performing horizontal alignment on the third bonding position 16 c of the liquid crystal panel P is provided at the third bonding position 16 c of the second rotary index 16. Each fifth detection camera 38 images, for example, both corners on the left side in FIG. 17 on the glass substrate of the liquid crystal panel P. Detection information of each of the detection cameras 34 to 38 is sent to the control device 25. It is also possible to use sensors in place of the detection cameras 34 to 38.

  On each of the rotary indexes 11 and 16, an alignment table 39 is provided on which the liquid crystal panel P is placed and the horizontal alignment is possible. The alignment table 39 is driven and controlled by the control device 25 based on the detection information of the detection cameras 34 to 38. Thereby, alignment of the liquid crystal panel P with respect to each rotary index 11, 16 (each bonding position 11c, 11d, 16c) is made.

  By bonding the bonding sheet F5 (sheet piece FXm) that has been aligned by the bonding head 32 to the liquid crystal panel P, the bonding variation of the optical member F1X is suppressed, and the optical member F1X for the liquid crystal panel P is suppressed. The accuracy in the optical axis direction of the optical display device is improved, and the clarity and contrast of the optical display device are increased.

  Here, the polarizer film constituting the optical member sheet FX is formed, for example, by uniaxially stretching a PVA film dyed with a dichroic dye. At this time, due to unevenness in the thickness of the PVA film during stretching, unevenness in dyeing of the dichroic dye, and the like, there may be a variation in the direction of the academic axis in the plane of the optical member sheet FX.

  Therefore, in the present embodiment, the control device 25 uses the liquid crystal panel for the optical member sheet FX based on the inspection data of the in-plane distribution of the optical axis in each part of the optical member sheet FX stored in advance in the storage device 24 (see FIG. 16). P bonding position (relative bonding position) is determined. And each bonding apparatus 13,15,18 aligns liquid crystal panel P with respect to the sheet piece FXm cut out from the optical member sheet | seat FX according to this bonding position, and bonds liquid crystal panel P to the sheet piece FXm. To do.

  The determination method of the bonding position (relative bonding position) of the sheet piece FXm with respect to liquid crystal panel P is as follows, for example.

  First, as shown in FIG. 19A, a plurality of inspection points CP are set in the width direction of the optical member sheet FX, and the direction of the optical axis of the optical member sheet FX is detected at each inspection point CP. The timing for detecting the optical axis may be at the time of manufacturing the original fabric roll R1, or may be until the optical member sheet FX is unwound from the original fabric roll R1 and half cut. Data in the optical axis direction of the optical member sheet FX is stored in the storage device 24 (see FIG. 16) in association with the position of the optical member sheet FX (position in the longitudinal direction and position in the width direction of the optical member sheet FX). .

  The control device 25 acquires the optical axis data (inspection data of the in-plane distribution of the optical axis) of each inspection point CP from the storage device 24, and the optical member sheet FX (cut line CL) of the portion from which the sheet piece FXm is cut out. The direction of the average optical axis of the area defined by (1) is detected.

  For example, as shown in FIG. 19B, an angle (deviation angle) formed between the direction of the optical axis and the edge line EL of the optical member sheet FX is detected for each inspection point CP, and the largest of the deviation angles (maximum deviation). Angle) is θmax and the smallest angle (minimum deviation angle) is θmin, and an average value θmid (= (θmax + θmin) / 2) of the maximum deviation angle θmax and the minimum deviation angle θmin is detected as an average deviation angle. . Then, the direction that forms the average deviation angle θmid with respect to the edge line EL of the optical member sheet FX is detected as the average direction of the optical axis of the optical member sheet FX.

  The deviation angle is calculated, for example, with the counterclockwise direction being positive with respect to the edge line EL of the optical member sheet FX and the clockwise direction being negative.

  Then, the direction of the average optical axis of the optical member sheet FX detected by the above method makes a desired angle with respect to the long side or the short side of the display region P4 of the liquid crystal panel P. The bonding position (relative bonding position) of the sheet piece FXm is determined. For example, when the direction of the optical axis of the optical member F1X is set to be 90 ° with respect to the long side or the short side of the display region P4 according to the design specifications, the average optical axis of the optical member sheet FX is set. The sheet piece FXm is bonded to the liquid crystal panel P so that the direction is 90 ° with respect to the long side or the short side of the display region P4.

  The above-described cutting devices 51 and 52 detect the outer peripheral edge of the display area P4 of the liquid crystal panel P with a detection unit such as a camera and the sheet piece FXm bonded to the liquid crystal panel P along the outer peripheral edge of the display area P4. Cut endlessly. The outer peripheral edge of the display area P4 is detected by imaging the edge of the liquid crystal panel P, the alignment mark provided on the liquid crystal panel P, or the outermost edge of the black matrix provided in the display area P4. Outside the display area P4, a frame portion G (see FIG. 3) having a predetermined width for arranging a sealant or the like for bonding the first and second substrates of the liquid crystal panel P is provided. The cutting of the sheet piece FXm is performed by the cutting devices 51 and 52 (cut line: WCL).

  As explained above, 1 A of film bonding systems of this embodiment are the strip | belt-shaped optical member sheet | seat FX of the width | variety wider than the length of any one side among the long side of the display area P4 of liquid crystal panel P, and a short side. Is unwound from the raw roll R1, and the optical member sheet FX is cut to a length longer than the length of either one of the long side and the short side of the display region P4 to obtain a sheet piece FXm, The sheet apparatus FXm is bonded to the liquid crystal panel P to form an optical member bonded body, and the outside of the portion facing the display region P4 from the sheet piece FXm bonded to the liquid crystal panel P. Cutting devices 51 and 52 that cut off the arranged surplus portion and form an optical member F1X having a size corresponding to the display region P4. Therefore, the optical member F1X can be accurately provided up to the display area P4, and the frame portion G (see FIG. 3) outside the display area P4 can be narrowed to enlarge the display area and downsize the device.

  Moreover, 1 A of film bonding systems are provided with the control apparatus 25 which determines the relative bonding position of liquid crystal panel P and the sheet piece FXm based on the test | inspection data of the optical axis direction of the optical member sheet | seat FX, and the bonding head 32 is provided. Based on the relative bonding position determined by the control device 25, the sheet piece FXm held on the holding surface 32a is bonded to the liquid crystal panel P. Therefore, even when there is variation in the optical axis direction in the plane of the optical member sheet FX, the relative bonding position between the sheet piece FXm and the liquid crystal panel P is appropriately adjusted according to the variation in the optical axis direction. Can do. Thereby, the precision of the optical axis direction of the optical member F1X with respect to the liquid crystal panel P can be improved, and the clarity and contrast of an optical display device can be improved.

  Moreover, in 1 A of film bonding systems, the bonding apparatuses 13, 15, and 18 are the unwinding part 31a which unwinds the optical member sheet FX with the separator sheet F3a from the original fabric roll R1, and separator sheet F3a to the optical member sheet FX. The cut portion 131b that cuts the optical member sheet FX to form the sheet piece FXm, the knife edge 31c that peels the sheet piece FXm from the separator sheet F3a, and the sheet piece FXm is attached to the holding surface 32a and is held. And a bonding head 32 for bonding the sheet piece FXm held on the holding surface 32a to the liquid crystal panel P. Therefore, continuous bonding of the sheet pieces FXm becomes easy, and the production efficiency of the optical display device can be increased. Moreover, what has the circular arc-shaped holding surface 32a is used as the bonding head 32. FIG. Therefore, the sheet piece FXm can be smoothly held by the tilt of the arc-shaped holding surface 32a, and the sheet piece FXm can be reliably bonded to the liquid crystal panel P by the tilt of the arc-shaped holding surface 32a.

  In the film bonding system 1A, the knife edge 31c peels the optical member F1X from the separator sheet F3a with the bonding surface with the liquid crystal panel P facing downward, and the bonding head 32 is opposite to the bonding surface. The upper surface on the side is attached to and held on the holding surface 32a and moved between the peeling position and the bonding position with the bonding surface facing downward. Therefore, the optical member sheet FX will be conveyed with the bonding surface on the adhesive layer F2a side facing downward, and the bonding surface of the optical member sheet FX will be prevented from being scratched or adhered with foreign matter, etc. Can be suppressed.

  Moreover, 1 A of film bonding systems carry in the said liquid crystal panel P in a carrying-in position (each rotary starting position 11a, 16a), the said bonding position (each bonding position 11c, 11d, 16c), and an unloading position (each rotary terminal position 11b). , 16b) are provided with rotary indexes 11, 16. Therefore, the transport direction of the liquid crystal panel P can be switched efficiently, and the line lengths of the rotary indexes 11 and 16 can be suppressed as a part of the line, and the degree of freedom of system installation can be increased.

  Moreover, in film bonding system 1A, bonding apparatus 13,15,18 has a detection part (1st detection camera 34) which detects the defect mark marked on the optical member sheet | seat FX, and optical member sheet | seat FX. The part where the defect mark is detected is held by the bonding head 32 and conveyed to the disposal position (discard position). Therefore, the yield of optical display devices can be improved, and an optical display device production system with high productivity can be provided.

  In the film bonding system 1A, the first cutting device 51 and the second cutting device 52 are laser cutters, and the first cutting device 51 and the second cutting device 52 are connected to the same laser output device 53. The laser output from the laser output device 53 is branched and supplied to the first cutting device 51 and the second cutting device 52. Therefore, compared with the case where a separate laser output device is connected to each of the first cutting device 51 and the second cutting device 52, the production system of the optical display device can be reduced in size.

(Third embodiment)
FIG. 20 is a schematic configuration diagram of the film bonding system 2 of the third embodiment.

  This embodiment is different from the second embodiment in that the transport direction of the first optical member sheet F1, the transport direction of the second optical member sheet F2, and the transport direction of the third optical member sheet F3 are parallel to each other. is there. Therefore, in this embodiment, the same code | symbol is attached | subjected about the component which is common in 2nd embodiment, and detailed description is abbreviate | omitted.

  In addition, in FIG. 20, the structure of the bonding apparatus 13,15,18 arrange | positioned in the rotary indexes 11 and 16 and its peripheral part is shown typically. 20, illustration of the main conveyor 5, the sub-conveyors 6, 7 and the film peeling device 14 shown in FIG. 17 is omitted. In FIG. 20, the arrows shown in the first optical member sheet F1, the second optical member sheet F2, and the third optical member sheet F3 indicate the directions of the average optical axes of the optical member sheets F1, F2, and F3. And the code | symbol 140 has shown the discarding position (discarding position) where the bonding sheet | seat containing a fault is discarded.

  In the film bonding system 1 </ b> A of the second embodiment shown in FIG. 17, the two bonding apparatuses 13 and 15 having the same configuration are installed around the first rotary index 11 at positions shifted by 90 ° from each other. Therefore, the conveyance directions of the sheet conveyance devices included in the bonding devices 13 and 15 are orthogonal to each other, and a long sheet conveyance line is formed in two directions.

  On the other hand, in the film bonding system 2 of this embodiment shown in FIG. 20, the conveyance direction of the sheet conveyance apparatus of the 1st bonding apparatus 13 is the conveyance direction of the sheet conveyance apparatus of the 2nd bonding apparatus 15, and 3rd. It is comprised so that it may become parallel with the conveyance direction of the sheet conveying apparatus of the bonding apparatus 18. FIG. Therefore, the conveyance directions of the sheet conveyance devices included in the bonding devices 13, 15, and 18 are parallel to each other, and a long sheet conveyance line is formed only in one direction.

  For example, in the example of FIG. 20, the first optical member sheet F1 is conveyed in a direction orthogonal to the direction connecting the rotation center of the first rotary index 11 and the first bonding position 11c. The 1st sheet piece F1m cut out by the cut part 131b is conveyed in the direction orthogonal to the conveyance direction of the 1st optical member sheet | seat F1 by the bonding head 32, and the front and back one side of liquid crystal panel P in the 1st bonding position 11c. Bonded to the surface.

  The second optical member sheet F2 is conveyed in a direction parallel to the direction connecting the rotation center of the first rotary index 11 and the second bonding position 11e. The 2nd sheet piece F2m cut out by the cut part 131b is conveyed in the direction parallel to the conveyance direction of the 2nd optical member sheet | seat F2 with the bonding head 32, and 1st optical member bonding body PA1 in the 2nd bonding position 11e. The first sheet piece F1m side is pasted.

  The third optical member sheet F3 is conveyed in a direction parallel to the direction connecting the rotation center of the second rotary index 16 and the third bonding position 16c. The 3rd sheet piece F3m cut out by the cut part 131b is conveyed by the bonding head 32 in the direction parallel to the conveyance direction of the 3rd optical member sheet | seat F3, and said other side of liquid crystal panel P in the 3rd bonding position 16c. Bonded to the surface.

  Thus, in the film bonding system 2 of this embodiment, the conveyance direction of each optical member sheet | seat FX conveyed by the conveying apparatus 31 of each bonding apparatus 13,15,18 is mutually parallel. Therefore, it is possible to reduce the size of the production system of the optical display device as compared with the case where the conveying directions of the optical member sheets FX are set differently.

(Fourth embodiment)
FIG. 20 is a schematic view of a bonding apparatus applied to the film bonding system of the fourth embodiment.
FIG. 20A is a diagram illustrating a state in which the sheet piece FXm is held by the bonding head 60, and FIG. 20B is a diagram illustrating a state in which the sheet piece FXm is bonded to the liquid crystal panel P.

  In this embodiment, the difference from the second embodiment is that the bonding apparatus of the second embodiment uses a bonding head 32 having an arc-shaped holding surface 32a, whereas the bonding apparatus of the present embodiment is a flat surface. It is the point which uses the bonding head 60 which has the holding surface 60a of a shape. Therefore, it demonstrates centering around the structure of the bonding head 60 here, about the component which is common in 2nd embodiment, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  The bonding apparatus of the present embodiment tilts the bonding head 60, the bonding roller 62, the guide bar 61 that supports the bonding head 60 and the bonding roller 62, and the guide bar 61 with respect to the liquid crystal panel P. And a driving device (not shown) that horizontally moves in the state. Although not shown, the bonding apparatus of the present embodiment is provided with the same unwinding part, cutting part, and knife edge (peeling part) as those shown in FIG.

  The bonding head 60 has a flat holding surface 60a that holds the sheet piece FXm peeled from the separator sheet. The holding surface 60a is inclined with respect to the liquid crystal panel P when the guide bar 61 is inclined. The sheet piece FXm is positioned such that one end thereof protrudes outside the holding surface 60a and is adsorbed to the holding surface 60a. The adsorbing force of the sheet piece FXm is weak, and the sheet piece FXm can be moved in the horizontal direction while sliding on the holding surface 60a while being held by the holding surface 60a.

  The laminating roller 62 is disposed on the side of the laminating head 60 and presses and sticks the sheet piece FXm protruding from the holding surface 60a of the laminating head 60 to the liquid crystal panel P. When the guide bar 61 is moved in the horizontal direction by a driving device (not shown) in this state, the bonding head 60 and the bonding roller 62 are in a state where the one end of the sheet piece FXm is bonded to the liquid crystal panel P. The sheet piece FXm moves horizontally from the one end side toward the other end side. Thereby, the sheet piece FXm is gradually bonded to the liquid crystal panel P from the one end side by the bonding roller 62.

  The bonding head 60 aligns the sheet piece FXm held on the holding surface 60a in the horizontal direction in the head movement direction, the orthogonal direction thereof, and the rotation direction. As in the second embodiment, the bonding position (relative bonding position) between the sheet piece FXm and the liquid crystal panel P is based on the inspection data in the optical axis direction of the optical member sheet FX (see FIG. 16). Will be determined. The bonding head 60 bonds the sheet piece FXm held on the holding surface 60a to the liquid crystal panel P based on the relative bonding position determined by the control device 25.

  Therefore, also in the present embodiment, it is possible to provide an optical display device production system that can reduce the frame portion around the display area to enlarge the display area and downsize the device.

(First variant)
In the said embodiment, although CO2 laser was used as an example of the cutting devices 51 and 52, the cutting devices 51 and 52 are not limited to this. Other cutting parts such as a cutting blade can be used as the cutting devices 51 and 52.

  For example, as shown in FIG. 22, the first substrate P1 has three sides of the outer periphery along the corresponding three sides of the second substrate P2, and the remaining one side of the outer periphery is a corresponding side of the second substrate P2. In the case where the second substrate P2 is formed so as to protrude outward, the size of the second substrate P2 substantially coincides with the size of the display region P4. Therefore, if the cutting blade is moved along the outer periphery of the second substrate P2, the sheet piece F3m bonded to the second substrate P2 can be formed as the optical member F13 having a size corresponding to the display region P4.

  In this case, the surplus portion of the sheet piece F3m has almost no portion to be bonded to the liquid crystal panel P on the surface, and the optical member F13 and the surplus portion around the optical member F13 are bonded only by the adhesive force of the adhesive layer F2a. Therefore, the apparatus for peeling off and recovering the surplus portion of the sheet piece F3m from the liquid crystal panel P may have a simple configuration by simply pinching and pulling the end portion of the surplus portion, thereby simplifying the apparatus configuration. Moreover, in the said embodiment, the excess part of sheet piece F1m, F2m and the excess part of sheet piece F3m peeled and collect | recovered from the liquid crystal panel P by the separate process. However, in the present embodiment, it is very easy to collect the surplus portion of the sheet piece F3m. Therefore, when the surplus portions of the sheet pieces F1m and F2m are peeled off and collected from the liquid crystal panel P, the surplus portion of the sheet piece F3m is collected. Can be separated from the liquid crystal panel P and collected. In that case, since it is not necessary to provide the surplus part peeling apparatus in two places, the production system of an optical display device can be reduced in size.

(Second variant)
In the said embodiment, the method of using the direction of the average optical axis in the surface of the optical member sheet | seat FX as a determination method of the bonding position (relative bonding position) of the sheet piece FXm with respect to liquid crystal panel P was demonstrated. In the above embodiment, the average deviation angle θmid with respect to the edge line of the optical member sheet FX when the average deviation θmid between the in-plane maximum deviation angle θmax and the minimum deviation angle θmin is the average deviation angle. Is detected as the average direction of the optical axis in the plane of the optical member sheet FX. However, the method for detecting the direction of the average optical axis in the plane of the optical member sheet FX is not limited to this.

  For example, one or a plurality of inspection points CP is selected from a plurality of inspection points CP (see FIG. 19A) set in the width direction of the optical member sheet FX, and the direction of the optical axis is selected for each selected inspection point CP. And the angle (deviation angle) formed by the edge line EL of the optical member sheet FX is detected. Then, the average value of the deviation angles in the optical axis direction of the selected one or more inspection points CP is detected as the average deviation angle, and the direction forming the average deviation angle with respect to the edge line EL of the optical member sheet FX is optically detected. You may detect as the direction of the average optical axis of member sheet FX.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention, and can be used in appropriate combinations.

DESCRIPTION OF SYMBOLS 1, 1A, 2 ... Film bonding system (production system of an optical display device), 11 ... 1st rotary index (1st rotary table), 11a ... 1st rotary first start position (loading position), 11b ... 1st rotary termination Position (unloading position), 11c ... 1st bonding position (bonding position), 11d ... 2nd bonding position (bonding position), 16 ... 2nd rotary index (2nd rotary table), 16a ... 2nd rotary First departure position (loading position), 16b ... second rotary terminal position (carrying position), 16c ... third bonding position (bonding position), 13 ... first bonding device (bonding device), 15 ... second bonding Combined device (bonding device), 18 ... third bonding device (bonding device), 24 ... storage device, 25 ... control device, 31 ... sheet conveying device, 31a ... unwinding unit, 31b ... first cutting device, 31c ... Knife edge (peeling part) 31e ... Separator peeling position (peeling position), 32 ... bonding head, 32a ... holding surface, 33 ... driving device, 33 ... second detection camera (imaging device), 34 ... first detection camera (detection unit), 39 ... Alignment table (table), 42 ... inspection device, 43 ... analyzer, 50 ... second cutting device, 51 ... first cutting device, 52 ... second cutting device, 53 ... laser output device, 60 ... bonding head, 60a ... holding surface, 131b ... cut part, 140 ... discarding position (discarding position), F1m ... sheet piece, V1 ... first optical axis, V2 ... second optical axis, V3 ... average optical axis (surface of optical member sheet) Average optical axis), P ... liquid crystal panel (optical display component), PA1 ... first optical member bonded body, P4 ... display region, F1 ... first optical member sheet (optical member sheet), F2 ... second. Optical member sheet (optical member F3 ... third optical member sheet (optical member sheet), FX ... optical member sheet, F3a ... separator sheet, F11 ... first optical member (optical member), F12 ... second optical member (optical member), F13: Third optical member (optical member), F1X: Optical member, F1m: First sheet piece (sheet piece), F2m: Second sheet piece (sheet piece), F3m: Third sheet piece (sheet piece), FXm ... sheet piece, R1 ... raw roll

Claims (33)

An optical display device production system in which an optical member is bonded to an optical display component,
A table for supporting the optical display component;
An unwinding section for unwinding the belt-shaped optical member sheet together with the separator sheet from the raw roll;
In-plane distribution data of the optical axis of the optical member sheet is acquired, and an average optical axis direction in the plane of the optical member sheet is determined based on the in-plane distribution data of the optical axis of the optical member sheet. A control device that calculates and adjusts the cutting direction of the optical member sheet such that the direction of the average optical axis in the plane of the optical member sheet forms a target angle with respect to the cutting direction of the optical member sheet; ;
A first cutting device that obtains a sheet piece by cutting the optical member sheet larger than the display area in a state where the separator sheet is left on the optical member sheet in the cutting direction adjusted by the control device;
A peeling portion for peeling the sheet piece from the separator sheet;
A pasting head for pasting and holding the sheet piece on a holding surface and pasting the sheet piece held on the holding surface to the optical display member;
A driving device that relatively moves the bonding head and the table, and drives the bonding head to hold and bond the sheet pieces;
A second cutting device for cutting off the optical member having a size corresponding to the display area from the sheet piece by separating a portion of the sheet piece facing the display region and a surplus portion outside the facing portion;
An optical display device production system. The control device detects two optical axes that intersect at the largest angle in the plane of the optical member sheet, and sets an axis that bisects an angle formed by the two optical axes in the plane of the optical member sheet. The optical display device production system according to claim 1, wherein the optical display device is calculated as an average optical axis. An image pickup device that images the holding state of the sheet piece on the holding surface;
The drive device moves the bonding head and the table relative to each other so that a cutting side of the sheet piece and one side of the optical display component are aligned or parallel to each other based on an imaging result of the imaging device. Item 4. An optical display device production system according to Item 1. The optical display device production system according to claim 1, further comprising a storage device that stores in-plane distribution data of the optical axis of the optical member sheet. The optical display device production system according to claim 1, further comprising an inspection device that inspects the optical axis of the optical member sheet at a plurality of inspection positions in the width direction of the optical member sheet. The inspection apparatus has an analyzer movable in the width direction of the optical member sheet,
The inspection apparatus detects the optical axis of the optical member sheet by the analyzer while moving the analyzer in the width direction of the optical member sheet, thereby setting the optical axis of the optical member sheet of the optical member sheet. The optical display device production system according to claim 5, wherein inspection is performed at a plurality of inspection positions in the width direction. The optical display device according to claim 1, wherein the bonding head aligns the sheet piece held on the holding surface in a horizontal direction in a head moving direction, a direction orthogonal thereto, and a rotating direction. Production system. A detection unit for detecting a defect mark marked on the optical member sheet;
The said bonding head hold | maintains the site | part which detected the said fault mark of the said optical member sheet | seat on the said bonding surface, and conveys it to a disposal position. The production of the optical display device of any one of Claim 1 thru | or 7 system. The optical display device according to any one of claims 1 to 8, further comprising a rotary table that moves the optical display component to a loading position, a bonding position of the sheet piece to the optical display component, and a carry-out position. Production system. An image pickup device for picking up an image of the optical display component after the sheet pieces are bonded together;
The second cutting device cuts the first optical member sheet along the outer peripheral edge of the display area of the optical display component based on the imaging data of the optical display component by the imaging device, whereby the sheet piece 10. The optical member having a size corresponding to the display region is cut out from the sheet piece by separating a portion facing the display region and a surplus portion outside the facing portion. The production system of the optical display device described. It is a production method of an optical display device formed by bonding an optical member to an optical display component,
A first step of unwinding the belt-shaped optical member sheet from the raw roll together with the separator sheet;
In-plane distribution data of the optical axis of the optical member sheet is acquired, and an average optical axis direction in the plane of the optical member sheet is determined based on the in-plane distribution data of the optical axis of the optical member sheet. Calculating and adjusting the cutting direction of the optical member sheet so that the direction of the average optical axis in the plane of the optical member sheet forms a target angle with respect to the cutting direction of the optical member sheet; Process and;
A third step of obtaining a sheet piece by cutting the optical member sheet larger than the display area in a state where the separator sheet is left on the optical member sheet in the adjusted cutting direction;
A fourth step of peeling the sheet piece from the separator sheet;
A fifth step of pasting and holding the sheet piece on the holding surface of the bonding head and bonding the sheet piece held on the holding surface to the optical display member;
A sixth step of relatively moving the bonding head and the table supporting the optical display component and driving the bonding head to hold and bond the sheet pieces;
A seventh step of cutting off the optical member having a size corresponding to the display region from the sheet piece by separating a portion of the sheet piece facing the display region and a surplus portion outside the facing portion;
A method for producing an optical display device. Two optical axes that intersect at the largest angle in the plane of the optical member sheet are detected, and an axis that bisects the angle formed by the two optical axes is an average optical axis in the plane of the optical member sheet The method for producing an optical display device according to claim 11. An optical display device production system in which an optical member is bonded to an optical display component,
A belt-shaped optical member sheet is unwound from a raw roll, and the optical member sheet is cut larger than the display area of the optical display component to form a sheet piece, and then the sheet piece is bonded to the optical display component. Combined device;
An imaging device for imaging the optical display component after the sheet pieces are bonded together ;
The surplus disposed outside the portion facing the display region from the sheet piece bonded to the optical display component by cutting the sheet piece based on the imaging data of the optical display component by the imaging device A cutting device for cutting off a part and forming the optical member having a size corresponding to the display area;
Have
The bonding device is
An unwinding section for unwinding the optical member sheet together with the separator sheet from the raw roll;
A cut portion that cuts the optical member sheet with the separator sheet remaining on the optical member sheet to obtain the sheet piece;
A peeling portion for peeling the sheet piece from the separator sheet;
A production system for an optical display device, comprising: a bonding head for adhering and holding the sheet piece on a holding surface, and adhering the sheet piece held on the holding surface to the optical display component. Based on inspection data in the optical axis direction of the optical member sheet, further comprising a control device for determining a relative bonding position between the optical display component and the sheet piece,
The production system for an optical display device according to claim 13, wherein the bonding head bonds the sheet piece held on the holding surface to the optical display component based on a relative bonding position determined by the control device. The production system of the optical display device according to claim 14, wherein the bonding head aligns the sheet piece held on the holding surface in a horizontal direction in a head moving direction, a direction orthogonal thereto, and a rotating direction. The bonding apparatus further includes a detection unit that detects a defect mark marked on the optical member sheet, and holds the portion where the defect mark of the optical member sheet is detected on the bonding head at a disposal position. The system for producing an optical display device according to claim 13. The optical display device production system according to claim 13, further comprising: a rotary table that moves the optical display component to a loading position, a bonding position of the sheet piece to the optical display component, and a unloading position. The bonding head adheres and holds the sheet piece to an arc-shaped holding surface and follows the curvature of the holding surface to bond the sheet piece held on the holding surface to the optical display component. The production system for an optical display device according to claim 13. An optical display device production system in which an optical member is bonded to an optical display component,
While the belt-shaped first optical member sheet is unwound from the first raw fabric roll, the first optical member sheet is cut larger than the display area of the optical display component to form a first sheet piece, and then the first sheet A first bonding apparatus in which a piece is bonded to one of the front and back surfaces of the optical display component to form an optical member bonding body;
While the belt-shaped second optical member sheet is unwound from the second raw roll, the second optical member sheet is cut larger than the display area to form a second sheet piece, and then the second sheet piece is used as the optical sheet. A second laminating apparatus for laminating the surface of the member laminating body on the first sheet one side;
An imaging device for imaging the optical display component after the first sheet piece and the second sheet piece are bonded together ;
The first sheet piece and the second sheet bonded to the optical display component by cutting the first sheet piece and the second sheet piece based on imaging data of the optical display component by the imaging device. Excessive portions arranged outside the portion facing the display area are collectively separated from each of the pieces, and a first optical member made of the first optical member sheet and a second optical member made of the second optical member sheet are provided. A first cutting device formed as the optical member having a size corresponding to the display area;
Have
Said 1st bonding apparatus is
A first unwinding section for unwinding the first optical member sheet together with the first separator sheet from the first raw fabric roll;
A first cut portion that cuts the first optical member sheet to obtain the first sheet piece while leaving the first separator sheet on the first optical member sheet;
A first peeling portion for peeling the first sheet piece from the first separator sheet;
A first laminating head for laminating and holding the first sheet piece on the first holding surface, and laminating the first sheet piece held on the first holding surface to one of the front and back surfaces of the optical display component. When;
Have
Said 2nd bonding apparatus is
A second unwinding section for unwinding the second optical member sheet together with the second separator sheet from the second original fabric roll;
A second cut part for cutting the second optical member sheet and obtaining the second sheet piece in a state where the second separator sheet is left on the second optical member sheet;
A second peeling portion for peeling the second sheet piece from the second separator sheet;
The second sheet piece is bonded to the second holding surface and held, and the second sheet piece held on the second holding surface is bonded to the surface of the optical member bonding body on the first sheet piece side. With two bonding heads;
An optical display device production system. Based on the inspection data in the optical axis direction of the first optical member sheet, the first relative bonding position between the optical display component and the first sheet piece is determined, and in the optical axis direction of the second optical member sheet. Based on inspection data, further includes a control device that determines a second relative bonding position between the optical member bonding body and the second sheet piece,
The first pasting head of the first pasting device is based on the first relative pasting position determined by the control device, and the first sheet piece held on the first holding surface is the front and back of the optical display component. Pasted on one side,
The second pasting head of the second pasting device is based on the second relative pasting position determined by the control device, and the second sheet piece held on the second holding surface of the optical member pasting body. The optical display device production system according to claim 19, wherein the optical display device is bonded to a surface on one side of the first sheet. The first laminating head of the first laminating apparatus aligns the first sheet piece held on the first holding surface in the horizontal direction in the head moving direction and its orthogonal direction and rotational direction,
The second laminating head of the second laminating apparatus aligns the second sheet piece held on the second holding surface in the horizontal direction in the head moving direction, the orthogonal direction, and the rotating direction. The production system of the optical display device described. The first laminating apparatus further includes a first detection unit that detects a defect mark marked on the first optical member sheet, and a site where the defect mark of the first optical member sheet is detected is the first detection unit. Hold on the bonding head and transport to the first disposal position,
The second laminating apparatus further includes a second detection unit that detects a defect mark marked on the second optical member sheet, and a site where the defect mark of the second optical member sheet is detected is the first detection unit. The optical display device production system according to claim 19, wherein the optical display device is held by a bonding head and conveyed to a second disposal position. The optical display component is a loading position, a first bonding position that is a bonding position of the first sheet piece to the optical display component, and a bonding position of the second sheet piece to the optical member bonding body. The optical display device production system according to claim 19, further comprising a rotary table that is moved to the second bonding position and the carry-out position. Said 1st bonding apparatus conveys said 1st optical member sheet along the longitudinal direction, unwinding said 1st optical member sheet from said 1st original fabric roll by which said 1st optical member sheet was wound A first sheet conveying device
Said 2nd bonding apparatus conveys said 2nd optical member sheet along the longitudinal direction, unwinding said 2nd optical member sheet from said 2nd original fabric roll by which said 2nd optical member sheet was wound. A second sheet conveying device
The production system of the optical display device according to claim 19, wherein a conveyance direction of the first optical member sheet and a conveyance direction of the second optical member sheet are parallel to each other. While the belt-shaped third optical member sheet is unwound from the third original fabric roll, the third optical member sheet is cut larger than the display region to form a third sheet piece, and then the third sheet piece is used as the optical sheet. A third laminating device for laminating the other side of the display component;
A second portion that cuts off an excess portion disposed outside a portion facing the display region from the third sheet piece bonded to the optical display component, and forms the optical member having a size corresponding to the display region. A cutting device;
Further comprising
The third bonding device is
A third unwinding section for unwinding the third optical member sheet together with the third separator sheet from the third original fabric roll;
A third cut portion that cuts the third optical member sheet to obtain the third sheet piece in a state where the third separator sheet is left on the third optical member sheet;
A third peeling portion for peeling the third sheet piece from the third separator sheet;
A third laminating head for laminating and holding the third sheet piece on the third holding surface and laminating the third sheet piece held on the third holding surface to the other surface of the optical display component. When;
An optical display device production system according to claim 19. The control device determines a third relative bonding position between the optical display component and the third sheet piece based on inspection data in the optical axis direction of the third optical member sheet,
The 3rd bonding head of the said 3rd bonding apparatus is based on the said 3rd relative bonding position which the said control apparatus determined, The said 3rd sheet piece hold | maintained on the said 3rd holding surface is the front and back of the said optical display component The optical display device production system according to claim 25, wherein the optical display device is bonded to the other surface. The third bonding apparatus includes a third detection unit that detects a defect mark marked on the third optical member sheet, and a portion where the defect mark of the third optical member sheet is detected is the third bonding member. The optical display device production system according to claim 25, wherein the optical display device is held by the combined head and conveyed to a third disposal position. Said 3rd bonding apparatus conveys said 3rd optical member sheet | seat along the longitudinal direction, unwinding said 3rd optical member sheet | seat from said 3rd original fabric roll by which said 3rd optical member sheet | seat was wound. Further having a third sheet conveying device
The production system of the optical display device according to claim 25, wherein a conveyance direction of the first optical member sheet, a conveyance direction of the second optical member sheet, and a conveyance direction of the third optical member sheet are parallel to each other. 26. The system for producing an optical display device according to claim 25, wherein the excess portions separated from each of the first sheet piece, the second sheet piece, and the third sheet piece are collectively peeled from the optical display component. The first cutting device and the second cutting device are laser cutters, and the first cutting device and the second cutting device are connected to the same laser output device and output from the laser output device The optical display device production system according to claim 25, wherein the laser is branched and supplied to the first cutting device and the second cutting device. At least one bonding head among the first bonding head, the second bonding head, and the third bonding head is at least one of the first sheet piece, the second sheet piece, and the third sheet piece. The sheet piece held on the holding surface while holding and holding one sheet piece on at least one holding surface among the arc-shaped first holding surface, the second holding surface, and the third holding surface. The optical display device production system according to claim 25, wherein the optical display device is tilted so as to follow the curvature of the holding surface so as to be bonded to the optical display component or the optical member bonding body.   The cutting device is bonded to the optical display component by cutting the sheet piece along the outer peripheral edge of the display area of the optical display component based on imaging data of the optical display component by the imaging device. An excess portion disposed outside the portion facing the display area is separated from the sheet piece, and the optical member having a size corresponding to the display area is formed.
  The optical display device production system according to any one of claims 13 to 18.   The first cutting device cuts the first sheet piece and the second sheet piece along an outer peripheral edge of a display area of the optical display component based on imaging data of the optical display component by the imaging device. The first optical member sheet is separated from the first sheet piece and the second sheet piece that are bonded to the optical display component, and the excess part disposed outside the portion facing the display area is collectively separated. The first optical member made of the second optical member made of the second optical member sheet is formed as the optical member having a size corresponding to the display area.
  32. A system for producing an optical display device according to any one of claims 19 to 31.

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