KR100782445B1 - A method for adhesion of film and an apparatus thereof - Google Patents

Abstract

The present invention relates to a film bonding method and apparatus for bonding a sheet-like film of a size suitable for a substrate to be bonded to a substrate.

At the upper side of the board | substrate 2, the film 1 is inclined and adsorb | sucked by the adsorption plate 33 and the front end adsorption plate 34 on the opposite surface side to the protective film 7, and the adhesive tape ( 55, the adhesive tape 55 is reversed at the tip of the film 1 to peel off the tip of the protective film 7, and the tip adsorption plate 34 is detached from the tip of the film to distal the tip of the substrate 2. Presses the tip end portion of the film from which the tip end portion of the protective film is peeled off and presses the press roller 46 to release the adsorption holding of the film by the adsorption plate 33, leading the substrate 2 to the tip end side of the film 1. The protective film 7 is peeled off by the movement of the adhesive tape 55 while the film 1 is moved to the substrate 2, and the film 1 is supplied to the substrate 2, and the film 1 is attached to the substrate 2 by the pressing roller 46. Glue.

According to this invention, a film does not fall on a board | substrate even if it does not require the subtle and complicated control of a suction holding force, and a film can be adhered to a board | substrate easily and reliably.

Description

Film bonding method and apparatus therefor {A METHOD FOR ADHESION OF FILM AND AN APPARATUS THEREOF}

1 is a schematic view of main parts of an optical film bonding apparatus according to the present invention;

FIG. 2 is a side view of an optical film used for the optical film bonding apparatus shown in FIG. 1; FIG.

3 is a schematic view of an optical film adsorption and transport mechanism of the optical film bonding apparatus shown in FIG. 1;

4 is a schematic view of an adhesive material protective film peeling mechanism in the optical film bonding apparatus shown in FIG. 1;

5 is a plan view showing a schematic configuration of an entire optical film bonding apparatus according to the present invention;

FIG. 6 is a diagram for explaining alignment of an optical film and a display panel by the optical film bonding apparatus shown in FIG. 1; FIG.

FIG. 7 is a view for explaining alignment of an end portion of an optical film and a display panel by the optical film bonding apparatus shown in FIG. 1; FIG.

FIG. 8 is a diagram illustrating peeling of a protective film in an optical film by the pressure-sensitive adhesive protective film peeling mechanism shown in FIG. 4. FIG.

It is a figure explaining adhesion | attachment of the optical film and display panel by the optical film bonding apparatus shown in FIG.

※ Explanation of code for main part of drawing

1: optical film 2: display panel

7: protective film 9: XYZθ table

33: adsorption plate 34: tip adsorption plate

46: pressing roll 47: CCD camera

50: tape unwinding winding portion 55: adhesive tape

59: tip peel roll

The present invention relates to a film bonding method and apparatus for bonding a sheet-like film of a size suitable for a substrate to be bonded to a substrate.

In manufacturing processes such as liquid crystal displays and plasma displays, functional films having various functions, such as improving contrast and color reproducibility, blocking electromagnetic waves and infrared rays emitted from the panel, preventing reflection of surrounding images on the screen, and preventing panel damage. Good image quality is realized by adhering (hereinafter, abbreviated film) to the surface of a liquid crystal display panel, a plasma display panel, or the like (hereinafter abbreviated substrate) in a state in which two glass plates are bonded.

The film bonding apparatus which supplies and adhere | attaches the sheet-like film of the magnitude | size suitable for the board | substrate to which the display surface of a board | substrate is bonded upward from the upper side of a board | substrate for adhesion | attachment of a film is used.

Since an adhesive material is apply | coated to a film, the surface of an adhesive material is covered with a protective film in order to prevent foreign material adhesion | attachment, to prevent deformation | transformation of an adhesive material, or to overlap films.

Such a film is set (mounted) on the adsorption holding table upwards, the adhesive material protective film is peeled off immediately before adhesion, and the adsorption holding table is inverted to be placed above the substrate in a state where the adhesive material of the film is exposed. do.

The film is inclined to bring one end of the film into close proximity to the substrate, pressurized with a pressing roll to perform tip bonding, and the substrate is bonded by moving the film in the direction in which the film is taken out.

At this time, the film is made to slide the adsorption holding table surface in a state of being adsorbed and held on the adsorption holding table surface so as not to fall on the upper surface of the substrate before being adhered by a pressing roll in turn.

As showing such a technique, there exist some described in Unexamined-Japanese-Patent No. 2003-276091.

In order to adhere the film to the substrate, it is necessary to hold the film. However, when the pressure-sensitive adhesive surface is downward, the pressure-sensitive adhesive surface cannot be supported. Therefore, the film upper surface needs to be adsorbed and held by the adsorption member.

Since the adhesion of the film is carried out by sandwiching the held film and the substrate by the pressing roll, the pressing roll rotates, and thus the film needs to slide the adsorption member surface in the adsorption holding state and the adsorption holding state.

The film adsorption holding member of the adsorption member ensures adsorption holding force when high vacuum is used, but the resistance when sliding the adsorption member surface increases, causing scratches on the film surface. On the other hand, when low vacuum is used for the adsorption holding of the film, the resistive force is reduced to reduce scratches on the surface of the film. However, the low adsorption and holding force of the film increases the risk of the film falling to the substrate surface.

In addition, when the adhesion of the film is started, the adsorption area is reduced by moving the adsorption member surface to approach the end of the adhesion, and the film may peel off from the adsorption member surface and fall to the substrate surface. And there exists a problem that a board | substrate contacts with a film falling and a bubble mixes between a film and a board | substrate.

In addition, when the film and the adsorption member are rubbed, a small amount of wear is generated, which falls on the surface of the substrate and remains between the film and the substrate. In this case, shading or scattering of the light transmitted by the wear powder or the bubbles generated around it can cause the desired image quality not to be obtained, resulting in a decrease in image quality or a decrease in yield.

Therefore, since these problems require delicate and complicated control of the adsorption holding force of the film, it is difficult to adhere the film efficiently and in a good state.

Accordingly, an object of the present invention is to provide a film bonding method capable of easily and reliably bonding a film to a substrate without the film falling onto the substrate without requiring subtle and complicated control of the adsorption and holding force in the adhesion of the film. It is in providing a device.

In addition, another object of the present invention is to provide a film bonding method and an apparatus in which adhesion of a film does not occur to the surface of the substrate due to the occurrence of minute wear.

The film bonding method of the present invention, which achieves the above object, is characterized in that the protective film provided on the adhesive side of the film is adhered to the substrate by peeling a substrate and a sheet-shaped film having a size suitable for the substrate. In the film adhesion method, the said protective film in the upper part of the board | substrate held horizontally by the front end adsorption plate corresponding to the one side front end part of the said film, and the adsorption plate corresponding to the area | region of the said film other than the said one side front end part. And a pressure-sensitive adhesive tape disposed so as to be orthogonal to one end of the film on the protective film of the film held on the suction plate and the tip suction plate, and the pressure-sensitive adhesive tape of the film The protective film at the one end side of the film by moving backward at the one end of the film The front end of the film is released, and the adsorbent holding on the one end of the film of the tip adsorption plate is released to release the front end adsorption plate from the one side of the film to correspond to the one side of the film of the substrate held horizontally. Pressing this portion with a pressing roll while aligning the front end portion of the film that peeled the front end portion of the protective film to the portion, releases the adsorption holding of the film by the adsorption plate, and moves the film to the movement and reverse of the adhesive tape. The said film is adhere | attached on the said board | substrate, peeling the said protective film by horizontally moving the said board | substrate to the foremost front end side of the said film, supplying on a board | substrate and peeling the said protective film simultaneously.

The film bonding apparatus of the present invention which achieves the above object is characterized in that the protective film provided on the adhesive side of the film is peeled off the substrate and the sheet-like film having a size suitable for the substrate. A film bonding apparatus for adhering, comprising: a substrate holding moving mechanism for holding a substrate horizontally and moving one side of the substrate as a head and a surface side opposite to the protective film above the substrate holding moving mechanism; A tip adsorption plate and an adsorption plate for adsorbing and retaining regions of the film other than the one end and the one side of the film corresponding to one side of the substrate, and the end adsorption plate and the adsorption plate are respectively the front end adsorption plate. Plate inclined mechanism to incline to be close to one side of the substrate, and the adsorption plate An adhesive tape disposed on the protective film of the film inclined by a bite tilt mechanism and orthogonal to the one end of the film, and the adhesive tape is moved to the one end of the film to adhere to the protective film and at the same time An adhesive tape moving mechanism for reversing at the one side leading edge side of the film so as to peel the protective film from the one side leading edge side of the film, and the adhesive tape on the front end suction plate in a state in which the protective film has peeled the protective film from the one side leading edge side of the film. The tip adsorption plate release-releasing means for releasing the adsorption holding of the film and detaching it from the one side tip portion of the film, and in the state where the adhesive tape peels the protective film from the one side tip side of the film. To maintain the adsorption of the film The suction plate releasing means for releasing, and the portion corresponding to the one side leading end of the film of the substrate which horizontally held the one leading edge of the film in a state in which the front end suction plate was separated from the one side leading end of the film. And a pressurizing mechanism for pressurizing the pressing roller, and feeding the film onto the substrate by the movement and reverse of the adhesive tape by the pressure-sensitive adhesive tape moving mechanism, and simultaneously peeling the protective film, thereby removing the protective film. The film is pressed against the substrate by a pressing roll by the pressing mechanism while the protective film is peeled off by horizontally moving the front end side of the film to the front side.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described in detail with reference to FIGS. In addition, the same thing is attached | subjected to the same thing in the previous drawing.

1 is a schematic view of principal parts of an optical film bonding apparatus configured by applying the present invention.

An optical film bonding apparatus is an apparatus for bonding an optical film (film) 1 to an image display surface of a display panel (substrate) 2, and is largely divided into a panel moving mechanism (substrate holding moving mechanism), an adsorption plate, and a tip. An optical film adsorption conveying device comprising an adsorption plate and an adsorption plate inclination mechanism, a front end adsorption plate release means, and an adsorption plate release means, an adhesive material protective film peeling mechanism including an adhesive tape and an adhesive tape moving mechanism, a press roll, It consists of a press roll mechanism etc. which contain a press mechanism. Hereinafter, the structure of each part is demonstrated in order.

The type, structure, and thickness of the display panel 2 are not particularly limited, and the optical film bonding apparatus is, for example, a PDP display panel displaying an image on a PDP (plasma display) or a filter single plate independent of the display panel. It can use for manufacture of the display panel of a glass substrate and LCD (liquid crystal display).

First, the optical film 1 is demonstrated. The optical film 1 has various functions, such as improving contrast and color reproducibility, blocking electromagnetic waves and near-infrared rays emitted from the panel, preventing reflection of surrounding images on the screen, and preventing damage to the panel.

As shown in FIG. 2, such an optical film 1 is composed of an antireflection film 3, a coloring film 4, and an electromagnetic wave blocking film 5. Moreover, the adhesive material 6 for adhering to the display panel 2 is apply | coated to the surface of the electromagnetic wave shielding film 5, and the protective film 7 for adhering the adhesive material 6 is adhere | attached, and it has suitable rigidity. Doing. The thickness, material, combination order, etc. of each layer film 3 to 5 are not particularly limited.

The optical film 1 configured in this manner exfoliates the protective film 7 when exposing the adhesive film 6 to the display panel 2. The optical film 1 and the display panel 2 are precisely aligned, and the adhesive material 6 is brought into contact with the display panel 2 to be bonded.

First, the panel moving mechanism (substrate holding moving mechanism) will be described.

As shown in FIG. 1, the panel moving mechanism includes a straight guide base 8, an XYZθ table 9, and a conveyor 10. The linear guide base 8 serves as a base of the optical film bonding apparatus and has a flat plate shape. On the linear guide base 8, a linear guide 12 extending left and right in FIG. 1 is provided, and an XYZθ table 9 and a conveyor 10 are disposed thereon.

The servo motor 14 is provided in the support plate 13 arranged on the lowermost surface of the XYZθ table 9, and the support plate 13 rotates the pinion gear 15 provided on the servo motor shaft to rotate the rack gear (not shown). The linear guide 12 can be moved to the left and right in FIG. 1 through the above), and the stop position after the movement can be accurately reproduced.

The support plate 13 is provided with a straight guide 16 and a plate 17 extending from side to side in FIG. 1, and the plate 17 is mounted on the support plate 13 by a pulse motor (not shown). Fine-tuning moves from side to side. In addition, the plate 17 is provided with a straight guide 18 extending in a direction perpendicular to the surface of FIG. 1 orthogonal to the moving direction of the support plate 13 and a plate 19 thereon, which is provided on the plate 17. By means of a pulse motor (not shown), the plate 19 can be fine-tuned and moved in a direction perpendicular to the surface of FIG. 1 orthogonal to the moving direction of the support plate 13.

In addition, the plate 19 is provided with a rotary bearing 20 and a plate 21, and finely moved in the rotational direction in a horizontal state by the pulse motor (not shown) provided in the plate 19. It is supposed to be.

The plate 21 is provided with a lifting mechanism for moving the plate 22 up and down and a straight guide 23 extending left and right in FIG. 1.

The elevating mechanism is installed on the linear guide 23 provided on the plate 21, the plate 24 connected to the linear guide 23, the elevating guide 25 provided on the plate 24, and the plate 22, and the elevating guide 25. It is composed of a cam follower (26) and a cylinder (27) installed on the plate 21 to move the plate 24.

When the plate 24 is moved by the cylinder 27, the lifting guide 25 provided on the plate 24 also moves. At this time, the cam follower 26 installed on the plate 22 is moved upward and downward in FIG. 1 by the inclination of the elevating guide 25, and the elevating movement can be performed while the plate 22 is guided by the straight guide 23. It is supposed to be.

The plate 22 is provided with a conveyor 10 for conveying the panel fixing jig 1 for fixing the display panel 2 in a direction perpendicular to the surface of FIG. 1. The conveyor 10 receives the panel conveying jig 11 fixedly mounted with the display panel 2 to the conveying roller 28 and moves it to a predetermined position, and then the panel conveying jig 11 is fixed in four directions (not shown). Can be fixed).

When the panel conveying jig 11 is mounted with the display panel 2 on the upper surface side, a panel display printed circuit board is provided so that the panel conveying jig 11 can be mounted even when a panel display printed circuit board or the like is installed on the back side of the display panel 2. The panel support member is installed in the position which is not provided. Moreover, the positioning guide 29 provided in the panel conveyance jig 11 is attached to the desired position so that attachment or detachment is possible.

By configuring the positioning guide 29 in this manner, it is possible to cope with the display panel 2 of various shapes and sizes, thereby increasing the degree of freedom of application of the present optical film bonding apparatus.

In addition, the display panel (at the position on the left side of FIG. 1 which adheres the optical film 1 from the right position of FIG. 1 which receives the panel conveyance jig 11 which fixedly mounted the display panel 2 with the conveyance roller 28) 2) A panel cleaner 75 for cleaning the surface of the panel is provided while the display panel 2 is moved. The above-mentioned lifting mechanism utilizes the display panel 2 to access the panel cleaner 75 so that the display panel 2 can be moved. If it has passed through the panel cleaner 75, the display panel 2 is lowered and returned to its original position.

The panel cleaner 75 is a rotary brush method. In FIG. 1, the rotation direction of the brush is counterclockwise in a reverse direction with respect to the display panel 2 moving from the right to the left side, whereby the display panel 2 is rotated. Dust and abrasion of the surface can be scraped off and removed by a dust collector connected to the panel cleaner 75.

Since the rotating brush used here is rubbed on the surface of the display panel 2, the display panel 2 can be prevented from being charged by selecting a conductive material. The panel cleaner is not particularly limited to the rotary brush method, and may be selected in consideration of the size of the dust on the surface of the display panel 2 and the adhesion state. For example, an adhesive roll method or an ultrasonic dry cleaning method can be selected.

Subsequently, an optical film adsorption conveyance mechanism is demonstrated.

The optical film adsorption conveyance mechanism is arrange | positioned at the upper part of the left side of said panel moving mechanism as shown in FIG.

The optical film adsorption conveyance mechanism is comprised including the linear guide base 30, the adsorption plate support member 32, and the adsorption plate 33, as shown to FIG. 3 (a). The straight guide base 30 becomes an upper base frame of the optical filter bonding apparatus. Under the linear guide base 30, the linear guide 31 is provided, and the adsorption plate 33 is arrange | positioned via the adsorption plate support member 32 in the form which hangs on the linear guide 31. As shown in FIG.

The linear guides 31 are provided in two rows so as to extend in a direction perpendicular to the surface of FIG. 3 orthogonal to the left and right moving directions of the panel conveying mechanism, and the plates 35 are provided to hang on the linear guides 31. . The plate 35 is provided with a ball screw nut 38 of the ball screw 37 supported by the straight guide base 30. As a result, by rotating the servomotor (not shown) installed in the ball screw 37, the plate 35 can move along the straight guide 31 in the direction perpendicular to the ground of FIG. 3, and thus the stop position after the movement. It can be reproduced accurately.

The plate 35 is provided with an adsorption plate support member 32 via a straight guide 36 provided in the left and right directions of FIG. 3 orthogonal to the straight guide 31. By the action, it is possible to move in the left and right directions of FIG. 3 orthogonal to the straight guide 31.

The suction plate support members 32 are installed to freely rotate the lifting cylinders 40 and 41, and the suction plate 33 is installed to the shafts of the lifting cylinders 40 and 41 so as to rotate freely. The lifting cylinders 40 and 41 comprise the adsorption plate inclination mechanism which can raise and lower the adsorption plate 33 as shown in FIG. 3 (a), or incline as shown in FIG. 3 (b).

One end of the adsorption plate 33 is connected to an optical film adsorption fixing blower (not shown) via a suction pipe having an opening / closing valve, and the like. 33), it is possible to suck and hold and fix the optical film 1 placed on the optical film table 42 through a suction hole provided to penetrate toward the lower surface.

In addition, the installation position of the optical film table 42 is demonstrated later. The size of the adsorption plate 33 is not particularly limited, and the same adsorption plate can be suited to a plurality of optical film sizes by zone selection by zone division of suction holes according to suitable sizes.

The adsorption plate 33 is provided with a front end adsorption plate 34 on the adhesive front end (one side front end of the film) side of the optical film 1 via the pivot shaft 45. The tip adsorption plate 34 has the same adsorption holding function as that of the adsorption plate 33, and when the front adsorption plate 34 adsorbs and holds the optical film 1 placed on the optical film table 42, the position which is faced with the adsorption plate 33 is achieved. Is positioned at the front end, and the front end side of the optical film 1 is sucked and held by suction by the front end suction plate 34, and the area other than the front end of the optical film 1 is attracted by the front end suction plate 33 by suction. Keep adsorption.

In addition, as described later, after the peeling of the protective film adhered to the optical film 1 adsorbed and held, the tip of the optical film 1 is adhered to the display panel 2 with the pressing roll 46 (see FIG. 1). In order to secure the pressurization space of the press roll 46, as shown in FIG.3 (c), the front-end | suction adsorption plate 34 opens and closes the adsorption holding by the blower for optical film adsorption | suction fixing in the middle of the suction piping. The valve is released by closing the valve, and the cylinder is pivoted away from the pivot shaft 45 by a cylinder (not shown) so that the valve can be separated from the optical film 1. Doing.

The adhesive sheet (adhesive member) 43 is embedded in the optical film 1 adsorption surface of the front end adsorption plate 34 similarly to the front end adsorption plate 34. Thereby, the optical film 1 and the adhesive sheet 43 are pressed at the time of the tip peeling of the protective film 7 adhere | attached to the optical film 1 demonstrated later, and the optical film 1 is a front end adsorption plate 34 Peeling from the adsorption surface of)), that is, peeling failure of the protective film 7 can be prevented.

The tip adsorption plate 34 is also positioned for the CCD camera 47 (see FIG. 1) that recognizes positioning marks (not shown) provided on the optical film 1 while the optical film 1 is adsorbed and held. The mark recognition hole 44 is provided. This recognizes the position of the optical film 1 in the state of being adsorbed by the adsorption plate 33 and the front end adsorption plate 34, and positions the display panel 2 in the XYZθ table 9 of the panel moving mechanism. By adjusting, the optical film 1 can be adhered to a desired position with high precision.

The adsorption plate 33 is provided with the adsorption plate release means which can release | release the adsorption holding of the optical film 1 by the optical film adsorption fixing blower which is not shown in figure.

Next, the adhesive tape 55 and the adhesive tape moving mechanism which perform peeling of the protective film 7 in the optical film 1 with respect to an adhesive material protective film peeling mechanism are demonstrated.

The adhesive material protective film peeling mechanism is a straight guide base 48 extended from side to side in FIG. 4 (a) parallel to the straight guide 12 extended from side to side in FIG. 1 in the panel moving mechanism shown in FIG. The unwinding winding part 50 and the optical film receiver 51 are comprised. The linear guide base 48 becomes a base frame which supports the adhesive material protective film peeling mechanism.

On the straight guide base 48, a straight guide 49 extending left and right in FIG. 4A is provided, and a tape unwinding winding portion 50 and an optical film receiver 51 are disposed thereon.

The linear guide base 48 is provided with a cylinder 52, and the optical film in which the tape unwinding winding portion 50 is adsorbed and held by the suction plate 33 and the tip suction plate 34 inclined by the cylinder 52 ( It is possible to move to the vicinity of 1). A part of the adhesive tape 55 has a path as having an inclination angle that matches the inclination angle of the optical film 1 adsorbed and held by the adsorption plate 33 and the tip adsorption plate 34.

A plurality of tape unwinding shafts 53 are provided in the tape unwinding winding portion 50, and an adhesive tape 55 can be provided on each tape unwinding shaft 53. At the end of the tape take-up shaft 53, a torque motor 56 is provided for each tape take-up shaft 53 in order to give tension so that sagging does not occur when the tape is taken out.

The winding of the tape is wound in a state in which the winding shaft 54 is provided and the protective film 7 peeled off by the adhesive tape 55 is adhered to the adhesive tape 55. In order to control the winding speed and the winding amount at this time, a sensor 57 and a servomotor 58 for measuring the diameter of the winding shaft are provided.

The adhesive tape 55 is unwound from each tape unwinding shaft 53 in parallel with the stretching direction of the straight guide 49 and proceeds in the direction of the adhesive tip (one side tip of the film) of the optical film 1, and FIG. 4 (b). In the front-end peeling roll 59 shown in Fig. 9), the path is folded back to be in the opposite direction, and is rolled up and wound around the winding shaft 54.

The number of installation of the adhesive tape 55 is three, but what is necessary is just to set it suitably according to the width dimension of the optical film 1 and the display panel 2, and the adhesive force with respect to the protective film 7 of the adhesive tape 55. .

In order to peel the protective film 7 suitably, it is preferable to arrange | position it at equal intervals to the left and right with respect to the center of the width dimension of the optical film 1 or the display panel 2, and at least two may be provided. .

The optical film receiver 51 has a flat plate shape, and after the end peeling of the protective film 7 with the adhesive tape 55 is completed, the optical film 1 is received from the adsorption plate 33 and the tip adsorption plate 34, It is supported in order to prevent the bending and position shift of the optical film 1, and is provided. Therefore, the optical film receiver 51 is located on the suction plate 33 side rather than on the tip suction plate 34 side to have the same angle of inclination as that of a part of the adhesive tape 55.

The peeling of the protective film 7 adhere | attached to the optical film 1 is demonstrated by FIG.4 (b).

The adhesive tape 55 is pulled out from each tape unwinding shaft 53 and is reversed by the tip peeling roll 59 via the rollers provided in predetermined positions, and wound around the winding shaft 54 as shown.

When the tape unwinding winding part 50 is moved to the vicinity of the optical film 1 in this state, the front-end peeling roll 59 is the inclined optical film shown by the dotted line at the front-end | tip of the optical film 1 (FIG. 4 (b)). It is arrange | positioned at the position which coincides with the lower end part of (1).

The tip peeling roll 59 is supported by the support member 61 via the guide 60. The support member 61 is provided with a cylinder 62, and the tip peeling roll 59 moves in the direction of arrow a by the operation of the cylinder 62, so that the adhesive tape 55 is distal to the protective film 7 position. It can pressurize to and adhere | attach.

Moreover, the support member 61 is supported by the linear guide 63 provided according to the inclination of the optical film 1, and the ball screw nut 64 of the ball screw 65 is provided. Thereby, the rotation of the pulse motor 66 provided in the ball screw 65 can move according to the inclination of the optical film 1, and it is possible to control a moving speed and a moving distance accurately.

Thereby, when it moves to the arrow b direction in the state which pressed the tip peeling roll 59, the tip peeling roll 59 will raise while rotating. At this time, since each adhesive tape 55 moves in the direction of the arrow c by the winding force of the winding shaft 54, the winding force also acts on the protective film 7 adhered to each adhesive tape 55 so that the protective film 7 ) Is peeled off in order from the tip.

Moreover, a press roll mechanism is demonstrated.

As shown in FIG. 1, the pressurizing roll mechanism is comprised from the press roll 46, the lever 69, and the cylinder 68. As shown in FIG. The pressurizing roll mechanism is provided with the linear guide 71, the support | pillar 67, and the cylinder 70 provided on the base frame 72 in order to enable the movement to the left-right horizontal direction in FIG. Adhesion of the optical film 1 and the display panel 2 is performed by converting the operation of the cylinder 68 downward through the lever 69 after the movement by the operation of the cylinder 70. .

The press roll 46 does not have a rotation drive mechanism, and the press roll 46 rotates along with the movement of a panel moving mechanism after the optical film 1 and the display panel 2 are inserted.

The size of the pressing roll 46 is not limited, and can be set in consideration of the strength of the display panel 2 and the required pressing force of the optical film 1.

When the width of the display panel 2 is wide or when a high pressing force is required, the pressing roll 46 is lengthened so that the center portion sags and the equal pressing force cannot be maintained in the width direction. Therefore, in order to suppress this slack, the press roll mechanism can also be comprised by combining as a backup roll the crown-shaped roll which made the diameter of the center part a little larger.

Although elastic rubber is provided in the surface of the press roll 46, the material is not specifically limited, It can select suitably with the optical film 1. PET films and silicones or conductive rubbers with good releasability are suitable. In addition, the rubber hardness is preferably a soft hardness in order to absorb the bending of the display panel (2).

The CCD camera mechanism is provided above the pressure roll mechanism. The CCD camera mechanism is supported by the apparatus frame not shown, and is comprised by the CCD camera 47, the horizontal moving mechanism 73, and the up-down moving mechanism 74. As shown in FIG.

Two CCD cameras 47 are provided so that they can be applied to the display panel 2 and the optical film 1 by the same camera by the horizontal moving mechanism 73 and the vertical moving mechanism 74.

The display panel 2 is fixed to the position indicated by the solid line on the left side of FIG. 1 by the XYZθ table 9, and then is displayed by the CCD camera 47 by the horizontal moving mechanism 73 and the vertical moving mechanism 74. By recognizing the position of the positioning mark provided in (2), position shift and inclination (rotation shift in a horizontal plane) in the XY direction of the display panel 2 are measured.

Moreover, the alignment mark recognition hole provided in the front end adsorption plate 34 also has the optical film 1 adsorbed-held by the adsorption plate 33 and the front end adsorption plate 34, and is fixed to the optical film adhesion position in the horizontal state. The positioning mark of the optical film 1 is recognized via 44, and a position or inclination is measured.

The measured position data is processed by the device controller, and the optical film 1 and the display panel 2 are aligned and displayed by positioning the display panel 2 by the XYZθ table 9 provided in the panel moving mechanism. The optical film 1 is adhered with high precision to the desired position of the panel 2.

Next, operation | movement of the optical film bonding apparatus of the said structure which adhere | attaches the optical film 1 to the display panel 2 is demonstrated.

It is a top view which shows schematic structure of the whole optical film bonding apparatus.

In Fig. 5, A is an optical film supply part, B is an adhesive part, C is a display panel supply part, D is a display panel conveying part, E is a display panel cleaning part, F is a pressurizing roll mechanism waiting part, and G is an adhesive protective film peeling mechanism. The base and H are display panel recovery units.

In order to adhere the optical film 1 to the display panel 2, the optical film 1 is mounted on the optical film table 42 in the optical film supply part A, and the alignment is accurately performed using an alignment guide (not shown). Do it.

Next, the display panel 2 is attached to the panel fixing jig 11 beforehand, and is set in the panel feeding position using the conveyance trolley 77. The back surface of the panel fixing jig 1 of the conveyance trolley 77 has a free roller structure. The operation preparation for the adhesion of the optical film 1 is completed by the above.

Next, the bonding operation is started by operating the automatic driving start button. The adsorption plate support member 32 of the optical film adsorption conveyance mechanism shown in FIG. 3 is located in the optical film supply part A, and the optical film table 42 raises, and as shown in FIG. The optical film 1 is pressed against the adsorption plate 33 and the tip adsorption plate 34 dropped to 40 and 41 to be adsorbed and held by the adsorption plate 33 and the tip adsorption plate 34, and then the adsorption plate 33 ) And the tip adsorption plate 34 are raised and moved to the adhesion part B by the adsorption plate support member 32, as shown by the dotted line in FIG.

On the other hand, the XYZθ table 9 is located in the display panel conveyance unit D, and the display panel supply unit C displays the panel fixing jig 11 on which the display panel 2 on the conveyance trolley 77 is mounted. Extruded to the conveyance part (D). The panel fixing jig 11 is drawn in by the conveying roller 28 on the conveyor 10 on the XYZθ table 9 and fixed after being aligned.

Next, the display panel 2 on the XYZθ table 9 is conveyed to the display panel cleaning unit E, and the display panel 2 is moved by the lifting guide 25 and the cam follower 26 on the XYZθ table 9. ) Is slightly raised to clean the surface of the display panel 2 by the panel cleaner 75, and then the display panel 2 is returned to the original height by the lifting guide 25 and the cam follower 26. Thereafter, the XYZθ table 9 passes under the pressing roll mechanism waiting portion F and is positioned at the bonding portion B. FIG.

In the adhesive portion B, the adhesive film protective film peeling mechanism and the pressure roll mechanism are used to peel the tip of the protective film 7 of the optical film 1 as described later, and the optical film receiving 51 and the adhesive tape ( 55 receives the optical film 1 from the adsorption plate 33 and the tip adsorption plate 34 and supports it from below, presses the optical film 1 with the pressing roll 46, and presses the display panel 2 to XYZθ. The adhesion to the display panel 2 is completed while the optical film 1 is pulled out by moving from the table 9 to the right side in FIG. 5.

The adsorption plate 33 and the tip adsorption plate 34 which exchanged the optical film 1 to the optical film receiver 51 and the adhesive tape 55 are the adsorption plate support member 32 of the optical film adsorption conveyance mechanism. It returns to the optical film supply part A. FIG.

The display panel 2 to which the optical film 1 is adhered is returned to the display panel conveying unit D by the XYZθ table 9 to release the fixing of the panel fixing jig 11 and the display panel by the conveyor 10. It is sent to the collection | recovery part H, it receives in the conveyance trolley | bogie 77, and completes a series of bonding operation | movement operation | movement.

The method of supplying the optical film 1 to the optical film table or the method of using the conveyance trolley 77 for supplying the display panel 2 described in the above-described series of operating operations is not particularly limited. It is also possible.

Next, the adhesion of the optical film 1 to the display panel 2 by the adhesive material protective film peeling mechanism and the pressure roll mechanism will be described.

As shown in FIG. 6, in the adhesion part B, the display panel 2 completes positioning in the position which adhere | attaches the optical film 1 by the XYZ (theta) table 9, and the optical film 1 is the adsorption plate 33 Is held horizontally on the display panel 2 by the front end suction plate 34, and the tape unwinding winding portion 50 starts the bonding operation of the optical film 1 in the standby position.

First, the optical film 1 is adsorbed and held by the adsorption plate 33 and the tip adsorption plate 34 to maintain a horizontal state, and the upper portion of the alignment recognition mark hole 44 provided in the tip adsorption plate 34. The position of the alignment mark in the optical film 1 is measured by the CCD camera 47. Next, the CCD camera 47 is moved to measure the position of the alignment mark on the display panel 2.

Thereafter, the CCD camera 47 is returned to its original position shown in FIG. 1 (the position indicated by the dotted line in FIG. 6), and each of the measured position data is processed by a device controller (not shown) and displayed by the XYZθ table 9. Reposition panel 2.

Next, as shown in FIG. 7, the adsorption plate 33 inclines the adhesive front end side of the optical film 1 by operation of the lifting cylinders 40 and 41 below. At this time, the inclination angle of the suction plate 33 is an appropriate angle, but when the inclination angle is large, the optical film 1 protrudes when the optical film 1 is pressed onto the display panel 2 by the pressing roll 46. The tip length needs to be increased. Moreover, when the inclination angle is small, there is no space for providing components such as a tip peeling roll 59 for performing tip peeling of the protective film 7 adhered to the optical film 1.

Next, the tape unwinding winding part 50 is moved to the vicinity of the optical film 1 by the cylinder 52. At this time, the adhesive tape 55 provided in the tape unwinding winding part 50 and the protective film 7 adhered to the optical film 1 are positioned to maintain a gap so as not to contact. This is because, when contacting the protective film 7 with the tip peeling roll 59 before pressing the adhesive tape 55, the protective film 7 cannot be peeled off uniformly.

Next, as shown to Fig.8 (a), the adhesive tape 55 is moved to the front-end | tip position of the protective film 7 adhere | attached to the optical film 1 with the tip peeling roll 59 by the cylinder 62 at the arrow a direction. The pressure-sensitive adhesive tape 55 is adhered to the tip end portion of the protective film 7 by pressing with. Moreover, the optical film 1 and the adhesive sheet 43 are pressed by the front-end peeling roll 59, and both adhere | attach.

As shown in FIG. 8 (b) in this state, when the tip peeling roll 59 is moved to the arrow b direction along the inclination of the protective film 7 (moving to the adsorption plate 33 side) with the pulse motor 66, the tip will be removed. The peeling roll 59 moves while rotating.

Therefore, since the adhesive tape 55 moves to the arrow c direction according to the winding force of the winding shaft 54, and turns to be reversed by folding in the tip peeling roll 59, the adhesive adhered to the adhesive tape 55 is protected. The winding force also acts on the film 7, and the protective film 7 is peeled off by the amount of movement in order from the tip.

At this time, the tip portion of the optical film 1 is pressed against the adhesive sheet 43 by the tip peel roll 59, so that the tip portion of the optical film 1 does not peel off from the surface of the tip adsorption plate 34, and thus the protection is performed. The tip peeling failure of the film 7 does not occur.

Next, by closing the on-off valve provided in the middle of the suction pipe, the suction to the tip end of the optical film 1 by suction of the tip suction plate 34 is opened, and as shown in FIG. The tip adsorption plate 34, which is positioned in the same manner as 33), is pivotally evacuated about the pivot axis 45 to press the pressing roll 46 for adhering the tip of the optical film 1 to the display panel 2. Free up space.

When the tip of the optical film 1 is adhered to the display panel 2 by the pressing roll 46, only the tip adsorption plate 34 is evacuated so that the position of the optical film 1 is recognized by the CCD camera 47. State can be maintained. In addition, the optical film 1 is not bent downward by the tape winding force in the direction of arrow c due to the optical film adsorption holding by the adsorption plate 33 and the rigidity of the optical film 1, There is no bending upward as you turn away.

Next, as shown to Fig.9 (a), the optical film 1 is adsorbed-held by the adsorption plate 33, and the front-end | tip part is crimped | rolled by the press roll 46 in the state which peeled the protective film 7 of the front-end | tip part. It is bonded to (2).

At this time, the pressing roll 46 moves from the position of the pressurizing roll mechanism waiting part F shown in FIG. 5 to the direction of the adhesion part B by the operation of the cylinder 70 (refer FIG. 1), The generation of bubbles can be prevented by pressing the line unit value to the tip of the display panel 2.

After adhering the front end of the optical film 1 to the front end of the display panel 2 with the pressing roll 46, the adsorption plate 33 is closed by the closing valve provided in the middle of the suction pipe. ), The suction plate 33 and the tip suction plate 34 are raised horizontally with the lifting cylinders 40 and 41, and then moved to the optical filter table 42 of the optical film supply unit A. Be prepared for the following bonding operation.

The optical film 1 opened from the adsorption plate 33 is supported by the optical film support 51 and the adhesive tape 55 at the lower surface side, and the adsorption plate 33 adsorbs and holds the optical film 1 by the adsorption plate 33. When the bonding operation is performed in one state, the optical film 1 and the adsorption plate 33 are rubbed, so that scratches and abrasions do not occur on the surface of the optical film 1.

Next, as shown in FIG.9 (b), the display panel 2 which adhere | attached the front-end | tip of the optical film 1 moves in the arrow e direction by the XYZ (theta) table 9 as it was pressed by the crimping roll 46. Next, as shown in FIG. And the optical film 1 is also taken out in the same direction, and the crimping roll 46 also rotates along. In addition, the protective film 7 adhered to the adhesive tape 55 is similarly drawn out, and the protective film 7 is peeled off from the optical film 1 while adhered to the adhesive tape 55, and together with the adhesive tape 55. It is wound around the winding shaft 54.

At this time, since the tip peeling roll 59 moves to the adsorption plate 33 side according to the inclination of the adsorption plate 33 at the time of peeling the front end of the protective film 7, it is located in the position slightly away from the upper surface of the display panel 2, Even if the adhesive tape 55 is wound around the winding shaft 54 with the protective film 7 peeled off, the display panel 2 has no effect.

That is, the optical film 1 has no contact with the display panel 2 until it is pressed by the pressing roll 46 by the angle made by the tip peeling roll 59, and thus the optical film 1 and the display panel ( 2) It can be adhered in a clean state because there is no bubble mixing while pulling out the air between them.

In addition, when the optical film 1 advances to the position deviating from the front-end peeling roll 59, and the rear end part of the optical film 1 falls to the surface of the display panel 2, mixing of air bubbles may arise, By providing the plate which adsorb | sucks the upper surface of the optical film 1 from the 46) side, it is possible to prevent the fall of a rear end part, and to perform clean adhesion | attachment without the mixing of a foundation from a front end to a rear end.

As described above, the optical film 1 can be obtained from the front end to the rear end of the display panel 2 with no bubbles or abrasions mixed therein, and a high-quality adhesive finished product having no scratches on the surface thereof can be obtained. Moreover, since the position before the adhesion of the optical film 1 and the display panel 2 can be recognized and corrected and moved, high precision adhesion can be achieved.

According to the present invention, when the film is adhered to the substrate, since the holding of the film is moved from the adsorption plate to the adhesive tape, and the adhesive tape conveys the film to the substrate, the film is rubbed on the surface of the adsorption holding member so that the wear powder falls, Since no bubbles are generated around the wear powder, the film can be adhered to the substrate with good yield, and the film can be easily and reliably adhered to the substrate because it does not require subtle and complicated control of the adsorption retention force on the adsorption plate. Can be.

Claims (8)

In the film sticking method of peeling and sticking the protective film provided in the adhesive surface of the said film and the sheet-form film made the magnitude | size suitable for the said board | substrate to the said board | substrate, Above the substrate held horizontally, the film is adsorbed and held on a surface opposite to the protective film by a tip adsorption plate corresponding to the one end of the film and an adsorption plate corresponding to an area of the film other than the one side of the film. And a pressure-sensitive adhesive tape disposed on the suction plate and the protective film of the film held on the tip suction plate to be orthogonal to the one end of the film, and move the pressure-sensitive adhesive tape to reverse from the one end of the film. The tip end portion of the protective film on the one side tip end side of the film is peeled off, and the suction holding on the one side tip end portion of the film of the tip adsorption plate is released to release the tip adsorption plate from the one side tip end portion of the film, thereby maintaining horizontal. At one end of the film of the substrate The part is pressed with a pressing roller while aligning the one end of the film that has peeled the tip of the protective film to the corresponding part, and the suction holding of the film by the suction plate is released to release the substrate to the one end of the film. Peeling the protective film by moving and reversing the pressure-sensitive adhesive tape horizontally with the side as the head, and feeding the film onto the substrate and pressing the pressing roller to bond the film to the substrate. Film bonding method. The method of claim 1, On the upper side of the substrate held horizontally, the adsorption plate and the tip adsorption plate adsorb and hold the film in a state inclined in a shape in which the one side front end side thereof approaches the front end side of the substrate, and the adhesive tape is The pressure-sensitive adhesive tape is wound by moving in a direction falling from the substrate along the slope in a state in which the tip peeling roll is pressed to the protective film tip position by pressing the tip peeling roll to peel the tip of the protective film. Way. The method of claim 2, A pressure-sensitive adhesive sheet is embedded at the tip release roll pressurization position of the tip suction plate, and the film is not lifted at the time of peeling off the protective film by adsorption by suction of the tip suction plate to the protective film and adhesion of the pressure-sensitive adhesive sheet. Film adhesion method, characterized in that not to. In the film bonding apparatus which peels the protective film provided in the adhesive face of the said film, and adhere | attaches the said board | substrate and the sheet-form film which was suitable size to the said board | substrate, A substrate holding moving mechanism for holding the substrate horizontally and moving the one side of the substrate first, and the film corresponding to the one side of the substrate on the side opposite to the protective film from above the substrate holding moving mechanism; A tip adsorption plate and an adsorption plate for adsorbing and retaining regions of the film other than the one side tip and the side edge of the film, and the tip adsorption plate and the adsorption plate such that the tip adsorption plate is close to the one side of the substrate. An adsorption plate inclination mechanism to be inclined, an adhesive tape disposed on the protective film of the film inclined by the adsorption plate inclination mechanism, and orthogonal to one end of the film, and the adhesive tape to the one side of the film While adhering to the protective film and at the same time An adhesive tape moving mechanism for reversing from the one side tip side of the film to peel the protective film from the one side tip side of the film, and the tip adsorption plate with the adhesive tape peeling the protective film from the one side tip side of the film. The suction plate release-release means for releasing the adsorption holding of the film by means of the film and detaching it from the one-sided tip of the film, and the adhesive plate in the state where the adhesive tape has peeled the protective film from the one-sided tip side of the film. Adsorption plate releasing means for releasing the adsorption holding of the film, and a portion corresponding to the one side leading end of the film of the substrate having the one side leading end of the film horizontally in a state where the front end suction plate is separated from the one side leading end of the film To the part And a pressure mechanism for pressurizing the roller in contact with the roller, and peeling the protective film by movement and reverse of the adhesive tape by the pressure-sensitive adhesive tape moving mechanism while horizontally moving the substrate with one side leading end side of the film as the head. Supplying the film on the substrate, the film bonding apparatus, wherein the film is pressed against the substrate by a pressing roller of the pressing mechanism. The method of claim 4, wherein And the tip adsorption plate is provided with an adhesive member for adhering the one end of the film. The method of claim 5, And the end adsorption plate is provided with an alignment mark recognition hole for reading the alignment mark provided at one end of the film by the camera. The method of claim 5, And said adsorption plate and said tip adsorption plate are provided with adsorption holes for adsorbing said film by suction. The method of claim 5, The adhesive tape moving mechanism adheres the adhesive tape to the protective film of the film inclined by the suction plate inclined mechanism, and peels the tip portion of the protective film by moving the adhesive tape to the suction plate side according to the inclination. A film bonding apparatus comprising a tip peeling roll to be provided on one side of the film.

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