JP2019109532A - Method for manufacturing optical display panel and system for manufacturing optical display panel - Google Patents

Abstract

To provide a method for manufacturing an optical display panel capable of imaging four corners on both surfaces of the panel with a small number of area sensor cameras, achieving space saving of an inspection area and high accuracy inspection, and continuously producing good optical display panels.SOLUTION: A method for manufacturing an optical display panel includes: a first sticking step of sticking a first optical film piece to a first surface of an optical cell while transferring the optical cell; a first imaging step of imaging the sticking position of the first optical film piece stuck to the first surface of the optical cell with a first and a second area sensor camera while transferring the optical cell; a first image inspecting step of calculating the distance between an end of the optical cell and an end of the first optical film piece in a conveyance direction (y) and a direction (x) orthogonal to the conveyance direction from the image obtained by imaging the sticking position by image processing; and a first determining step of determining a sticking deviation on the basis of the calculated distance.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method of manufacturing an optical display panel and a method of inspecting the bonding quality (sticking deviation) of an optical film piece bonded to a main surface of an optical display panel in a manufacturing method of an optical display panel.

  As a conventional inspection method for bonding quality, for example, in a state in which the optical display panel in which the optical film pieces are bonded to both main surfaces are stopped, four corners of the panel are imaged by a camera There is a way to check. In this case, the camera and the illumination are respectively disposed at two corners at a pair of diagonals on the first surface of the panel, and the camera and the illumination are respectively disposed at two corners at a pair of diagonals on the other surface. Do. In order to image each of the four corners at one time in a stopped state, an inspection area for two panels was required at the time of inspection.

  Patent Document 1 describes a method of imaging all four corners of a polarizing plate (rectangle) attached to a liquid crystal panel. Paragraph 0040 states that it is necessary to stop the polarizer (and the liquid crystal panel) when using an area sensor camera.

  Patent Document 2 describes a method of imaging with a CCD camera from the side surface of a liquid crystal panel to which a polarizing plate (rectangular shape) is attached, and checking the adhesion accuracy of the polarizing plate. It is described that four corners can be inspected with two CCD cameras by horizontally rotating the liquid crystal panel by 90 °. In the inspection, the liquid crystal panel is transferred from the suction table to the liquid crystal cell inspection table, fixed to the table, and imaging of the CCD camera is performed.

  Patent Document 3 describes a method of capturing an image of a liquid crystal display panel by an area inspection unit in a state where the inspection position is stopped after being transported.

JP 2011-197281 A Unexamined-Japanese-Patent No. 2004-233184 Unexamined-Japanese-Patent No. 2012-27003

  However, in the conventional inspection method and inspections as described in Patent Documents 1 and 3, there is a problem that the production speed is reduced because the liquid crystal display panel is stopped and an area sensor camera is used for imaging. Also, four cameras were required to image the four corners of the panel.

  Patent documents 1 and 3 describe a method of imaging a liquid crystal display panel while conveying with a line sensor camera. However, although this method can detect the bonding position (bonding displacement) in the transport direction, it is difficult to detect the bonding displacement in the width direction orthogonal to the transport direction with high accuracy.

  SUMMARY OF THE INVENTION The object of the present invention is made in view of the above-mentioned circumstances, which enables imaging of four corners of both sides of a panel with a small area sensor camera, space saving of inspection area and high precision inspection An object of the present invention is to provide an optical display panel manufacturing method and an optical display panel manufacturing system capable of continuously producing a high quality optical display panel.

  As a result of intensive studies to solve the above problems, the present invention has been accomplished as follows.

The method for producing an optical display panel according to the present invention comprises: a first optical film having a pressure-sensitive adhesive; and a strip-like first carrier film on which the first optical film is laminated via the pressure-sensitive adhesive. A strip-like first optical film laminate is unrolled from a roll of the laminate, and at least a first optical film of the strip-like first optical film laminate is cut in the width direction to obtain a first optical film piece A first bonding step of bonding the first surface of the optical cell while transporting the optical cell;
While conveying the optical cell, the first optical film piece bonded to the first surface of the optical cell is disposed in alignment with the end in the width direction of the optical cell in the direction orthogonal to the conveying direction. A first imaging step of imaging with the first and second area sensor cameras;
From the image obtained by imaging with the first and second area sensor cameras in the first imaging step, the end portion of the optical cell in the transport direction (y) and the direction (x) orthogonal to the transport direction and the above A first image inspection step of performing image processing to calculate distances (Dx1 to Dx4, Dy1 to Dy4) to the end of the first optical film piece;
And a first determination step of determining a sticking displacement based on the distances (Dx1 to Dx4 and Dy1 to Dy4) calculated in the first image inspection step.

  According to this configuration, four corners on both sides of the panel can be imaged with a small area sensor camera, and the inspection area can be space-saving (can also be used as a transport area of the optical display panel), enabling high precision inspection. As a good quality optical display panel can be produced continuously.

  As one embodiment of the above-mentioned invention, when it is judged as defective in the first judgment process, a first accommodation process for housing a defective optical cell, and when judged as non-defective goods in the first judgment process, non-defective optical cell And a first non-defective product transfer step of transferring the

  As one embodiment of the present invention, in the first imaging step, first and second corner portions in front of (conveying direction downstream side) of an optical cell to be conveyed are imaged by the first and second area sensor cameras. The third and fourth corner portions at the rear (upstream side in the transport direction) of the transported optical cell are imaged by the first and second area sensor cameras. That is, the first area sensor camera images the first and third corner portions, and the second area sensor camera images the second and fourth corner portions. The first corner and the third corner are disposed parallel to the transport direction, and the second corner and the fourth corner are disposed parallel to the transport direction. The first corner and the second corner are disposed in a direction orthogonal to the transport direction.

According to one embodiment of the present invention, a second optical film laminate having a second optical film having a pressure sensitive adhesive and a strip-like second carrier film on which the second optical film is laminated via the pressure sensitive adhesive. The strip-like second optical film laminate is drawn out from the roll, and at least the second optical film of the strip-like second optical film laminate is cut in the width direction, and the second optical film piece is A second bonding step of bonding the second surface of the optical cell while transporting the optical cell;
A second optical film piece bonded to the second surface of the optical cell is disposed in a direction perpendicular to the transport direction and in accordance with the width end of the optical cell while the optical cell is transported. 3, second imaging step of imaging with a fourth area sensor camera,
From the image obtained by imaging with the third and fourth area sensor cameras in the second imaging step, the end portion of the optical cell in the transport direction (y) and the direction (x) orthogonal to the transport direction and the above A second image inspection step of performing image processing to calculate distances (Dx5 to Dx8, Dy5 to Dy8) to the end of the second optical film piece;
The method further includes a second determination step of determining a sticking displacement based on the distances (Dx5 to Dx8, Dy5 to Dy8) calculated in the second image inspection step.

  According to this configuration, the optical films can be bonded to both surfaces of the optical display panel, and after bonding to one surface, bonding position inspection (sticking displacement inspection) can be performed on the surface.

  As one embodiment of the above-mentioned invention, when it is judged as defective in the second judgment process, a second accommodation process for housing a defective optical cell, and when judged as non-defective goods in the second judgment process, non-defective optical cell And a second non-defective product transfer step of transferring the

  As one embodiment of the present invention, in the second imaging step, first and second corners in front of an optical cell to be conveyed are imaged by the third and fourth area sensor cameras, and the optical cell to be conveyed is The rear third and fourth corners are imaged by the third and fourth area sensor cameras. That is, the third area sensor camera captures images of the first and third corner portions, and the fourth area sensor camera captures images of the second and fourth corner portions.

  As one embodiment of the present invention, the first imaging step, the first image inspection step, and the first determination step are performed after the first bonding step and before the second bonding step. It will be.

  According to this configuration, before the second bonding step, it is possible to exclude an optical cell (an optical cell in which an optical film piece is stuck only on one surface) with a bonding deviation failure.

As one embodiment of the present invention, in the first bonding step, the optical cell and the first optical film piece are nipped and fed by a pair of first and second rollers, whereby the first bonding step is performed to the optical cell. An optical film piece is pasted together, and
In the first imaging step, first and second corner portions in front of the transported optical cell are held in a state in which the optical cell and the rear portion of the first optical film piece are sandwiched by the first and second rollers. The first and second area sensor cameras pick up an image.

  According to this configuration, with the panel rear portion (for example, the rear end portion) held by the first and second rollers, the first and second corner portions in front of the optical cell are the first and second area sensor cameras. Since the imaging can be performed with the above, the space of the examination area can be further saved. In addition, in the case where, for example, a transport roller is used as a transport unit that transports the optical cell, the optical cell may vibrate during transport. By holding the optical cell between the first and second rollers, the first and second corner portions can be imaged in a state in which this vibration is suppressed.

As one embodiment of the present invention, in the second bonding step, the optical cell and the second optical film piece are sandwiched and sent out by a pair of third and fourth rollers, whereby the second cell is attached to the optical cell. An optical film piece is pasted together, and
In the second imaging step, the first and second corner portions in front of the transported optical cell are held in a state in which the rear portion of the optical cell and the second optical film piece is sandwiched by the third and fourth rollers. The imaging is performed by the third and fourth area sensor cameras.

  According to this configuration, with the panel rear portion (for example, the rear end portion) held by the third and fourth rollers, the first and second corner portions in front of the optical cell are the third and fourth area sensor cameras Since the imaging can be performed with the above, the space of the examination area can be further saved. In addition, in the case where, for example, a transport roller is used as a transport unit that transports the optical cell, the optical cell may vibrate during transport. By holding the optical cell between the third and fourth rollers, the first and second corner portions can be imaged in a state in which this vibration is suppressed.

  As one embodiment of the present invention, in the first image inspection step, the cut end face of the first optical film piece (the end face cut in the width direction intersecting (perpendicular) with the strip longitudinal direction) is inclined In some cases, the distance is calculated based on the line in which the thickness of the film is maintained.

  According to this configuration, it is possible to always read a line in which a stable thickness is maintained, and to improve the accuracy of position inspection.

  As one embodiment of the present invention, in the second image inspection step, the cut end face of the second optical film piece (the end face cut in the width direction intersecting (perpendicular) with the strip longitudinal direction) is inclined In some cases, the distance is calculated based on the line in which the thickness of the film is maintained.

  According to this configuration, it is possible to always read a line in which a stable thickness is maintained, and to improve the accuracy of position inspection.

Another manufacturing system of optical display panels according to the present invention is
A strip-like first optical film is formed from a roll of a first optical film laminate having a first optical film having a pressure-sensitive adhesive and a strip-like first carrier film on which the first optical film is stacked via the pressure-sensitive adhesive. The optical film piece is obtained by unwinding the film laminate and cutting at least the first optical film of the strip-like first optical film laminate in the width direction, while conveying the optical cell, while carrying the optical cell. A first bonding portion to be bonded to the first surface of the cell;
The first optical film piece bonded to the first surface of the optical cell is disposed in alignment with the end of the optical cell in the direction orthogonal to the transport direction while the optical cell is being transported. First and second area sensor cameras that capture the width direction end,
From the image obtained by imaging with the first and second area sensor cameras, the end of the optical cell and the first optical film piece in the transport direction (y) and the direction (x) orthogonal to the transport direction A first image inspection unit that performs image processing to calculate distances (Dx1 to Dx4, Dy1 to Dy4) to the end portion;
And a first determination unit that determines sticking displacement based on the distances (Dx1 to Dx4, Dy1 to Dy4) calculated by the first image inspection unit.

  As one embodiment of the present invention, the first storage section for storing a defective optical cell when the first determination section determines that the optical disc is defective, and the non-defective optical cell when the first determination section determines the non-defective product. And a first non-defective conveyance unit for conveying the

As one embodiment of the above-mentioned invention, it has a 1st detection part in the conveyance upper stream side of an optical cell rather than the 1st and 2nd area sensor camera,
After a predetermined period of time after the first detection unit detects the optical cell being conveyed, the first and second area sensor cameras capture the first and second corners in front of the optical cell being conveyed. ,
After a predetermined period of time after the first detection unit does not detect the optical cell, the first and second area sensor cameras image the third and fourth corners behind the optical cell to be conveyed.

According to one embodiment of the present invention, a second optical film laminate having a second optical film having a pressure sensitive adhesive and a strip-like second carrier film on which the second optical film is laminated via the pressure sensitive adhesive. The strip-like second optical film laminate is drawn out from the roll, and at least the second optical film of the strip-like second optical film laminate is cut in the width direction, and the second optical film piece is A second bonding portion to be bonded to the second surface of the optical cell while transporting the optical cell;
The second optical film piece bonded to the second surface of the optical cell is disposed in alignment with the width end of the optical cell in a direction perpendicular to the transport direction while the optical cell is transported. Third and fourth area sensor cameras for imaging the width end;
From the image obtained by imaging with the third and fourth area sensor cameras, the distance (Dx5) between the optical cell end and the polarizing film end in the carrying direction (y) and the direction (x) orthogonal to the carrying direction A second image inspection unit that performs image processing to calculate ~ x 8 and Dy 5 to y 8);
And a second determination unit that determines sticking displacement based on the distances (Dx5 to Dx8, Dy5 to Dy8) calculated by the second image inspection unit.

  As one embodiment of the present invention, a second storage unit for storing a defective optical cell when the second determination unit determines a defect, and a non-defective optical cell when the second determination unit determines a non-defective product. And a second non-defective conveyance unit for conveying the

As one embodiment of the above-mentioned invention, it has a 2nd detection part in the conveyance upper stream side of an optical cell rather than the 3rd and 4th area sensor camera,
The third and fourth area sensor cameras image the first and second corners in front of the optical cell to be conveyed after a predetermined period of time since the second detection unit detects the optical cell to be conveyed. ,
The third and fourth area sensor cameras capture the third and fourth corner portions of the rear end of the optical cell to be conveyed after a predetermined period of time after the second detection unit has not detected the optical cell.

  As one embodiment of the present invention, the imaging process by the first and second area sensor cameras, the image process by the first image inspection unit, and the determination process by the first determination unit are performed after the bonding process by the first bonding unit And is performed before the bonding process by a 2nd bonding part.

As one embodiment of the above-mentioned invention, the 1st pasting part has a pair of 1st and 2nd rollers, and pinching the optical cell and the 1st optical film piece with the 1st and 2nd rollers concerned. The first optical film piece is pasted to the optical cell by sending it out;
The first and second area sensor cameras are configured such that the first and second rollers in front of the optical cell to be conveyed hold the optical cell and the rear portion of the first optical film piece between the first and second rollers. Take an image of the two corners.

As one embodiment of the above-mentioned invention, the second bonding part has a pair of third and fourth rollers, and while holding the optical cell and the second optical film piece by the third and fourth rollers. The second optical film piece is attached to the optical cell by sending it out;
The third and fourth area sensor cameras are configured such that the first and the second in front of the optical cell to be conveyed in a state in which the optical cell and the rear portion of the second optical film piece are sandwiched by the third and fourth rollers. Take an image of the two corners.

  As one embodiment of the present invention, in the first image inspection section, the cut end face of the first optical film piece (the end face cut in the width direction intersecting (perpendicular) with the strip longitudinal direction) is inclined In some cases, the distance is calculated based on the line in which the thickness of the film is maintained.

  As one embodiment of the present invention, in the second image inspection unit, the cut end face of the second optical film piece (the end face cut in the width direction intersecting (perpendicular) with the strip longitudinal direction) is inclined In some cases, the distance is calculated based on the line in which the thickness of the film is maintained.

  The system for manufacturing an optical display panel according to the present invention has the same function and effect as the method for manufacturing an optical display panel.

Schematic which showed an example of the manufacturing system of an optical display panel. The figure explaining the inspection method of an image inspection part. The figure explaining the inspection method of an image inspection part. The figure explaining the inspection method of an image inspection part. The figure explaining the inspection method of an image inspection part. The figure which shows an example of a test | inspection image. The figure which shows an example of the measuring method. The figure which shows an example of the measuring method. The figure explaining the inspection method of an image inspection part. The figure explaining another example of the imaging method.

(Embodiment 1)
FIG. 1 is a schematic view of an optical display panel manufacturing system according to a first embodiment. 2 to 5 are diagrams showing an inspection method by the inspection unit. FIG. 6 is an example of an inspection image. Hereinafter, the manufacturing system of the optical display panel according to the present embodiment will be specifically described with reference to FIGS.

  In the present embodiment, a liquid crystal cell as an optical cell and a liquid crystal display panel as an optical display panel will be described as an example. Moreover, as a roll of an optical film laminated body, what is shown in FIG. 1 is used. That is, as the first optical film laminate roll 1, a band-shaped first optical film having an absorption axis in the longitudinal direction on the first carrier film 12 (the first optical film piece 11 after cutting (film main body 11a, adhesive 11b ) Is wound, and the strip | belt-shaped 1st optical film laminated body 10 laminated | stacked is wound. Here, the first optical film laminate 10 has a width corresponding to the short side of the liquid crystal cell P (a width substantially shorter than the short side of the liquid crystal cell P). As the second optical film laminate roll 2, a strip-like second optical film (the second optical film piece 21 (film main body 21a, adhesive 21b after cutting) having an absorption axis in the longitudinal direction on the second carrier film 22 is used. A band-shaped second optical film laminate 20 formed by laminating is wound. Here, the second optical film laminate 20 has a width corresponding to the long side of the liquid crystal cell P (a width substantially shorter than the long side of the liquid crystal cell P).

  In the liquid crystal display panel manufacturing system according to the present embodiment, as shown in FIG. 1, a first transport unit 71 that transports the liquid crystal cell P to the first bonding unit 34 and the first surface P1 of the liquid crystal cell P The second transport unit 72 transports the liquid crystal cell P after the optical film pieces 11 are bonded, and the arrangement replacement unit 73 which reverses the upper and lower surfaces (P1, P2) and switches the short side and the long side of the liquid crystal cell P in the transport direction. And a third transport unit 74 (corresponding to a first non-defective transport unit) for transporting the liquid crystal cell P replaced by the placement replacement unit 73 to the second bonding unit 134 and a second surface P2 of the liquid crystal cell P Second transport unit 75 (second non-defective product transport) for transporting the liquid crystal cell P after bonding the two optical film pieces 21 (the liquid crystal cell in a state where the optical film is bonded to both sides is called "liquid crystal display panel") (Corresponding to a part). Each transport unit includes a plurality of transport rollers R for transporting the liquid crystal cell P by rotating around a rotation axis parallel to the direction orthogonal to the transport direction. In addition to the transport roller, a suction plate or the like may be provided.

(Liquid crystal cell transfer process)
The liquid crystal cell P is disposed to the first conveyance unit 71 from the accommodation unit 81 that accommodates the liquid crystal cell P so that the first surface P1 is the top surface, and is conveyed to the first bonding unit 34 by the rotation of the conveyance roller. Ru.

(First optical film laminate delivery process, optical film cutting process)
On the other hand, the 1st optical film laminated body 10 drawn | fed out from the 1st optical film laminated body roll 1 leaves the 1st carrier film 12 in the cutting part 31 without cut | disconnecting, while adsorbing-fixing the 1st carrier film 12 side. Cutting the first optical film into a predetermined size (a length corresponding to the long side of the liquid crystal cell P (a length substantially shorter than the long side)), and a plurality of first optical films on the first carrier film 12 Form piece 11. Examples of the cutting unit 31 include cutting using a knife (cutting with a knife for pulling and cutting) and cutting using a laser.

  An example of the cut portion 10a after being cut is shown by an arrow in FIG. 1, but the cut interval is drawn large in order to facilitate the description. When the cutter is a double-edged blade, the cutting surface inclines as shown in FIG. 8 as it travels in the cutting depth direction. In the case of a single-edged blade, the cut surface at the inclined blade surface is inclined as shown in FIG. The measuring method in the case of the cut surface which inclined in this way is mentioned later.

  A nip roller (not shown) may be arranged upstream or downstream of the cutting unit 31 to convey the first optical film laminate 10. The nip rollers may be disposed upstream and downstream of the cutting unit 31.

(Tension adjustment process)
In the cutting process of the first optical film laminate 10 and the subsequent bonding process, the tension adjusting section 32 is provided to adjust the slack of the film so as to enable continuous processing so that the process is not interrupted for a long time. Is provided. The tension adjustment unit 32 includes, for example, a dancer mechanism using a weight. A nip roller (not shown) may be disposed upstream or downstream of the tension adjustment unit 32 to convey the first optical film laminate 10. The nip rollers may be disposed upstream and downstream of the tension adjustment unit 32.

(Peeling process)
The first optical film laminate 10 is wound around the first peeling portion 33 and is inverted so that the first optical film piece 11 is peeled from the first carrier film 12. The first carrier film 12 is wound on a roll by a winding unit 35. The winding unit 35 has a roll and a rotation drive unit, and the rotation drive unit rotates the roll to wind the first carrier film 12 around the roll. In addition, a nip roller (not shown) may be disposed on the upstream side or downstream side of the peeling section 33 to convey the first optical film laminate 10 or the first carrier film 12. The nip rollers may be disposed on the upstream side and the downstream side of the peeling section 33.

(1st bonding process)
The first bonding section 34 bonds the first optical film piece 11 peeled off from the first carrier film 12 to the first surface P1 of the liquid crystal cell P via the adhesive 11 b while transporting the liquid crystal cell P. . The first bonding portion 34 is configured of a pair of first rollers 34 a and a second roller 34 b. Either one may be a drive roller and the other may be a driven roller, or both rollers may be drive rollers. The first optical film piece 11 is attached to the first surface P1 of the liquid crystal cell P by feeding it downstream while holding the first optical film piece 11 and the liquid crystal cell P between the pair of first rollers 34a and the second roller 34b. Fit together.

(First imaging process)
The liquid crystal cell P after the first optical film piece 11 is attached to the first surface P1 of the liquid crystal cell P is transported downstream by the second transport unit 72. A direction (x) perpendicular to the direction of conveyance (y) of the pasting position of the first optical film piece 11 pasted on the first surface P1 of the liquid crystal cell P while the liquid crystal cell P is conveyed by the second conveyance part 72 And, images are taken by the first area sensor camera 41 and the second area sensor camera 43 which are arranged according to the width direction end (A1 to A4) of the liquid crystal cell P. The first corner A1 in front of the liquid crystal cell P and the third corner A3 behind it are imaged by the first area sensor camera 41. On the other hand, the second corner A2 in front of the liquid crystal cell P and the fourth corner A4 behind it are imaged by the second area sensor camera 43.

  The first detection unit 45 is disposed above the second conveyance unit 72, and the first area sensor camera 41 and the second area sensor camera 43 are disposed downstream thereof. First, as shown in FIG. 2, the first detection unit 45 detects the front portion of the liquid crystal cell P. As shown in FIG. 3, the first area sensor camera 41 and the second area sensor camera 43 are driven and imaged after a predetermined period has elapsed since this detection. Here, the “predetermined period from detection” is set by the distance between the first detection unit 45 and the first and second area sensors 41 and 43, the size in the transport direction of the liquid crystal cell, and the transport speed of the liquid crystal cell. The first detection unit 45 can be configured by a reflective optical sensor or the like. The control unit 50 having received the detection signal (ON signal) from the first detection unit 45 generates a command signal for driving the first area sensor camera 41 and the second area sensor camera 43 after a predetermined period has elapsed from the timing of the detection signal. The first area sensor camera 41 and the second area sensor camera 43 are sent, and the first area sensor camera 41 and the second area sensor camera 43 are driven according to the command signal to drive the first and second corners A1 and A2 Take an image.

  Next, as shown in FIG. 4, when the liquid crystal cell P is transported forward and the first detection unit 45 does not detect the liquid crystal cell P, a non-detection signal (OFF signal) is sent to the control unit 50. As shown in FIG. 5, the control unit 50 instructs the first area sensor to issue a command signal to drive the first area sensor camera 41 and the second area sensor camera 43 after a predetermined period has elapsed from the timing of this non-detection (OFF signal). The camera 41 is sent to the second area sensor camera 43, and in response to the command signal, the first area sensor camera 41 and the second area sensor camera 43 are driven to image the third and fourth corners A3 and A4. Here, “a predetermined period from the timing of the non-detection signal” is set by the distance between the first detection unit 45 and the first and second area sensors 41 and 43, the size in the transport direction of the liquid crystal cell, and the transport speed of the liquid crystal cell. Ru.

  Examples of the first and second area sensor cameras 41 and 43 include a CCD area camera and a CMOS area camera. A ring-shaped ring illumination unit is provided in front of the imaging units of the first and second area sensor cameras 41 and 43, and is an opposing position of the imaging area of the camera and below the transport roller R and adjacent transport rollers The first and second reflective illumination units 42 and 44 are disposed between Rs. The illumination light from the ring illumination unit is reflected by the first and second reflection illumination units 42 and 44, and the end portion of the liquid crystal cell P and the 11 end portion of the first optical film piece are irradiated from the back surface Highlight the line). Thus, the end line (edge line) is clearly imaged. The first and second reflection illumination units 42 and 44 can be configured of a reflection mirror and a reflection member.

  FIG. 6 shows an example of the image of the second corner A2 captured by the second area sensor camera 43. As shown in FIG. BM is a black matrix inside the liquid crystal cell.

  As another embodiment, the reflective illumination unit may be omitted by using only the illumination unit that illuminates the liquid crystal cell from the camera side. As another embodiment, a transmission light source may be disposed below the conveyance roller R and between adjacent conveyance rollers R, and the transmission light image may be captured by an area camera disposed above the conveyance roller R.

(First image inspection process)
The first image inspection unit 51 of the liquid crystal cell P in the transport direction (y) and the direction (x) orthogonal to the transport direction, from the images obtained by imaging with the first and second area sensor cameras 41 and 43. The distance (Dx1 to Dx4, Dy1 to Dy4) between the end and the end of the first optical film piece 11 is calculated by image processing.

  Specifically, this will be described with reference to FIGS. 6 and 7. The first image inspection unit 51 processes an image obtained by imaging with the second area sensor camera 43. An image obtained by image processing is shown in FIG. At this time, the distance (Dy2) between the end P0y of the liquid crystal cell P and the end L0y of the first optical film piece 11 in the transport direction (y) is obtained by analyzing and adding the number of pixels. Similarly, the distance (Dx2) between the end of the liquid crystal cell P and the end of the first optical film piece 11 in the direction (x) orthogonal to the transport direction is analyzed by adding the number of pixels and added. Ask. The x-direction measurement position in the case of obtaining Dy2 is a position at a distance Mx2 from the x-direction end of the liquid crystal cell P. On the other hand, the y-direction measurement position in the case of obtaining Dx2 is a position at a distance My2 from the y-direction end of the liquid crystal cell P. The distances Mx2 and My2 are preset. Other distances Dx1, Dx3, Dx4, Dy1, Dy3 and Dy4 can be calculated in the same manner. The distances Mx1, Mx3, Mx4, My1, My3 and My4 in this case are also preset.

  Further, as shown in FIG. 8, when the end of the first optical film piece 11 is inclined to the inside as shown in FIG. 8, the first image inspection unit 51 is configured such that the end P0y of the liquid crystal cell P and the first optical film The distance to the end L01 of the piece 11 is calculated. That is, the distance is calculated based on the edge line in which the thickness of the first optical film piece 11 is maintained. As a result, it is possible to read a line that always maintains a stable thickness, and it is possible to improve the accuracy of position inspection. In FIG. 8, the edge of the bonding surface of the 1st optical film piece 11 protrudes, and it is an example which the surface which is not a bonding surface has drawn in the film surface inside. For example, when a double-edged blade is used in the first cutting section 31, it becomes a cut surface of the first optical film piece 11 as shown in FIG.

(First determination step)
The first determination unit 52 determines the sticking deviation based on the distances (Dx1 to Dx4, Dy1 to Dy4) calculated by the first image inspection unit 51. The first determination unit 52 calculates the difference between the reference bonding distance (set in each of the four corners) stored in advance (set) and the calculated Dx1 to Dx4 and Dy1 to Dy2, and the difference If the difference is within a predetermined value (for example, ± 100 to ± 500 μm), it is determined as a non-defective product, while if the difference does not fall within the predetermined value, it is determined as a defective product.

(First alignment correction process)
When the defect determination is made by the first determination unit 52, the control unit 50 instructs the first bonding unit 34 to perform alignment correction of the bonding unit. Examples of the correction method include a method of finely adjusting the angle of the peeling portion 33, and a method of rotationally adjusting the liquid crystal cell P in the transport direction.

(First storage process for defective products)
If the first determination unit 52 determines that the liquid crystal cell is defective, as shown in FIG. 1, the defective liquid crystal cell P is branched from the second transport unit 72 to the defective product storage unit 81, transported and stored. On the other hand, when the non-defective product is determined by the first determination unit 52, the non-defective liquid crystal cell P is transported to the subsequent stage (first non-defective product transfer step).

  The first optical film piece 11 may be separated from the liquid crystal cell P and the defective liquid crystal cell P may be transported to the storage section 81.

  Note that, as another embodiment of the first image inspection unit 51 and the first determination unit 52, the first image inspection unit 51 is a distance between an end of the BM in the x and y directions and an end of the first optical film piece 11. Can also be calculated. Then, the first determination unit 52 can determine the sticking deviation based on the distance.

(Placement replacement process)
The arrangement exchange unit 73 reverses the upper and lower surfaces (P1, P2) of the non-defective liquid crystal cell P transported by the second transport unit 72 and switches the short side and the long side of the liquid crystal cell P in the transport direction (y). The arrangement replacement unit 73 can appropriately adopt a known mechanism. In the first embodiment, the arrangement switching unit 73 includes a rotating unit that sucks the liquid crystal cell P and horizontally rotates it by 90 °, and a reversing unit that sucks the liquid crystal cell P and reverses the front and back.

(Liquid crystal cell transfer process)
After the processing of the arrangement replacement unit 73, the liquid crystal cell P is transported by the third transport unit 74 to the second bonding unit 134.

(Second optical film laminate delivery process, optical film cutting process)
The second optical film laminate 20 fed out from the second optical film laminate roll 2 is left without cutting the second carrier film 22 at the cutting portion 131 while the second carrier film 22 side is adsorbed and fixed. 2 Cut the optical film into a predetermined size (a length corresponding to the short side of the liquid crystal cell P (a length substantially shorter than the short side)), and a plurality of second optical film pieces 21 on the second carrier film Form. Examples of the cutting unit 131 include cutting with a knife (cutting with a knife with pull-off) and cutting with a laser.

  An example of the cut portion 20a after being cut is shown by the arrow in FIG. 1, but in order to facilitate the description, the cut interval is drawn large.

  A nip roller (not shown) may be arranged upstream or downstream of the cutting unit 131 to convey the second optical film laminate 20. The nip rollers may be disposed upstream and downstream of the cutting unit 131.

(Tension adjustment process)
In the cutting process of the second optical film laminate 20 and the subsequent bonding process, in order to enable continuous processing so as not to interrupt the process for a long time, and in order to adjust the slack of the film, the tension adjusting unit 132 Is provided. The tension adjustment unit 132 includes, for example, a dancer mechanism using a weight. A nip roller (not shown) may be arranged upstream or downstream of the tension adjustment unit 132 to convey the second optical film laminate 20. The nip rollers may be disposed upstream and downstream of the tension adjustment unit 132.

(Peeling process)
The second optical film laminate 20 is wound around the second peeling portion 133 and is inverted so that the second optical film piece 21 is peeled from the second carrier film 22. The second carrier film 22 is wound on a roll by a winding unit 135. The winding unit 135 has a roll and a rotation drive unit, and the rotation drive unit rotates the roll to wind the second carrier film 22 around the roll. In addition, a nip roller (not shown) may be disposed on the upstream side or the downstream side of the peeling portion 133, and the second optical film laminate 20 or the second carrier film 22 may be conveyed. The nip rollers may be disposed on the upstream side and the downstream side of the peeling portion 133.

(2nd bonding process)
The second bonding section 134 bonds the second optical film piece 21 peeled from the second carrier film 22 to the second surface P2 of the liquid crystal cell P via the adhesive 21 b while transporting the liquid crystal cell P. . The second bonding unit 134 is configured of a pair of third rollers 134 a and a fourth roller 134 b. Either one may be a drive roller and the other may be a driven roller, or both rollers may be drive rollers. The second optical film piece 21 is attached to the second surface P2 of the liquid crystal cell P by feeding it downstream while holding the second optical film piece 21 and the liquid crystal cell P between the pair of third roller 134a and the fourth roller 134b. Fit together.

(Second imaging process)
The liquid crystal cell P (liquid crystal display panel) after the second optical film piece 21 is attached to the second surface P2 of the liquid crystal cell P is transported downstream by the fourth transport unit 75. A direction (x) orthogonal to the direction of conveyance (y) of the pasting position of the second optical film piece 21 pasted on the second surface P2 of the liquid crystal cell P while the liquid crystal cell P is conveyed by the fourth conveyance section 75 In addition, the third area sensor camera 141 and the fourth area sensor camera 143 arranged in alignment with the width direction end (B1 to B4) of the liquid crystal cell P pick up an image (see FIG. 9). The first corner B1 in front of the liquid crystal cell P and the third corner B3 behind it are imaged by a third area sensor camera 141. On the other hand, the second corner B2 in front of the liquid crystal cell P and the fourth corner B4 behind it are imaged by a fourth area sensor camera 143.

  As shown in FIG. 9, the second detection unit 145 is disposed above the fourth conveyance unit 75, and the third area sensor camera 141 and the fourth area sensor camera 143 are disposed downstream thereof. The second detection unit 145 detects the front portion of the liquid crystal cell P. The third area sensor camera 141 and the fourth area sensor camera 143 are driven and imaged after a predetermined period has elapsed since this detection. Here, the “predetermined period from detection” is set by the distance between the second detection unit 145 and the third and fourth area sensor cameras 141 and 143, the size in the conveyance direction of the liquid crystal cell, and the conveyance speed of the liquid crystal cell. The second detection unit 145 can be configured by a reflective optical sensor or the like. The control unit 50 having received the detection signal (ON signal) from the second detection unit 145 generates a command signal for driving the third area sensor camera 141 and the fourth area sensor camera 143 after a predetermined period has elapsed from the timing of the detection signal. The third area sensor camera 141 and the fourth area sensor camera 143 are sent to the third area sensor camera 141 and the fourth area sensor camera 143, and the third area sensor camera 141 and the fourth area sensor camera 143 are driven according to the command signal to drive the first and second corners B1 and B2. Take an image.

  Next, when the liquid crystal cell P is transported forward and the second detection unit 145 no longer detects the liquid crystal cell P, a non-detection signal (OFF signal) is sent to the control unit 50. The control unit 50 instructs the third area sensor camera 141 and the fourth area sensor 141 to drive the third area sensor camera 141 and the fourth area sensor camera 143 after a predetermined period has elapsed from the timing of the non-detection (OFF signal). The camera is sent to the camera 143, and the third area sensor camera 141 and the fourth area sensor camera 143 are driven according to the command signal to capture the third and fourth corner portions B3 and B4. Here, “a predetermined period from the timing of the non-detection signal” is set by the distance between the second detection unit 145 and the third and fourth area sensor cameras 141 and 143, the size of the liquid crystal cell in the transport direction, and the transport speed of the liquid crystal cell. Be done.

  Examples of the third and fourth area sensor cameras 141 and 143 include a CCD area camera and a CMOS area camera. A ring-shaped ring illumination unit is provided in front of the imaging units of the third and fourth area sensor cameras 141 and 143, and is adjacent to the conveyance roller R at a position opposite to the imaging area of the camera and below the conveyance roller R. The third and fourth reflection illumination units 142 and 144 are disposed between each other. The irradiation light from the ring illumination unit is reflected by the third and fourth reflection illumination units 142 and 144, and the end portion of the liquid crystal cell P and the end portion of the second optical film piece 21 are irradiated from the back surface Highlight the line). Thus, the end line (edge line) is clearly imaged. The third and fourth reflection illumination units 142 and 144 can be configured of a reflection mirror and a reflection member.

  As another embodiment, the reflective illumination unit may be omitted by using only the illumination unit that illuminates the liquid crystal cell from the camera side. As another embodiment, a transmission light source may be disposed below the conveyance roller R and between adjacent conveyance rollers R, and the transmission light image may be captured by an area camera disposed above the conveyance roller R.

(Second image inspection process)
The second image inspection unit 53 detects the liquid crystal cell P in the transport direction (y) and the direction (x) orthogonal to the transport direction from the images obtained by imaging with the third and fourth area sensor cameras 141 and 143. The distance between the end and the end of the second optical film piece 21 (Dx5 to Dx8, Dy5 to Dy8) is calculated by image processing. A specific calculation method is omitted because it is the same method as the first image inspection unit 51.

(2nd judgment process)
The second determination unit 54 determines the attachment deviation based on the distances (Dx5 to Dx8, Dy5 to Dy8) calculated by the second image inspection unit 53. The second determination unit 54 calculates the difference between the reference bonding distance (set in each of the four corners) stored in advance (set in each of the four corners) and the calculated Dx5 to Dx8, Dy5 to Dy8, and If the difference is within a predetermined value (for example, ± 100 to ± 500 μm), it is determined as a non-defective product, while if the difference does not fall within the predetermined value, it is determined as a defective product.

(2nd alignment correction process)
When the second determination unit 54 determines that a defect is made, the control unit 50 instructs the second bonding unit 134 to perform alignment correction of the bonding unit. Examples of the correction method include a method of finely adjusting the angle of the peeling portion 133 and a method of rotationally adjusting the liquid crystal cell P in the transport direction.

(Second storage process for defective products)
When the non-defective product is determined by the second determination unit 54, the non-defective liquid crystal cell P is transported to and stored in the non-defective storage section 83 (second non-defective product transfer step). On the other hand, when it is determined that the second determination unit 54 is defective, as shown in FIG. 1, the defective liquid crystal cell P is branched from the fifty-fourth transport unit 75 to the defective product storage unit 84 and transported and stored.

  In the first embodiment, each unit of the manufacturing system is controlled by the control unit 50. The control unit 50 includes, for example, an information processing device and a dedicated circuit. The first and second image inspection units and the first and second determination units are similarly configured by an information processing device and a dedicated circuit.

  As another embodiment, the non-defective liquid crystal cell P may be transported to another inspection process without being stored in the storage portion 83. In the defective liquid crystal cell P, only the second optical film piece 21 may be peeled from the liquid crystal cell P, and a new second optical film piece may be bonded to the second surface P2.

Second Embodiment
The second embodiment is different from the first embodiment in the method of capturing an image. As shown in FIG. 10, the first and second area sensor cameras 41 and 43 transport the liquid crystal cell P and the rear portion of the first optical film piece 11 by the first and second rollers 34a and 34b. The first and second corner portions A1 and A2 in front of the liquid crystal cell P to be captured are imaged. Similarly, the third and fourth area sensor cameras 141 and 143 are conveyed in a state in which the rear portions of the liquid crystal cell P and the second optical film piece 21 are held by the third and fourth rollers 134a and 134b. The first and second corner portions B1 and B2 in front of the liquid crystal cell P are imaged.

  According to this configuration, the area sensor camera can capture an image of the two corners in front of the liquid crystal cell in a state where the panel rear portion (for example, the rear end portion) is nipped by the pair of rolls. Space can be further reduced. Moreover, as a conveyance part which conveys a liquid crystal cell, two corner | angular parts can be suitably imaged in the state which suppressed the vibration of the liquid crystal cell in, for example, when using a conveyance roller.

  Furthermore, in the second and fourth transport units 72 and 75, the rolls disposed opposite to the transport roller R are disposed in front of the area sensor camera, and the front portions of the liquid crystal cell P and the first optical film piece 11 are held. The two corners behind the liquid crystal cell may be imaged by an area sensor camera.

(Another embodiment)
Further, in the present embodiment, each cutting portion cuts the belt-like optical film and the adhesive in the width direction, and the optical film pieces (11, 11) of the size corresponding to the liquid crystal cell P on the carrier film (12, 22). Although 21) was formed, you may cut the strip | belt-shaped optical film and an adhesive in the width direction so that the fault part of a strip | belt-shaped optical film may be avoided.

  Furthermore, as the optical film laminate roll (1), one obtained by winding a strip-like optical film laminate (10) in which a strip-like optical film is laminated via a pressure-sensitive adhesive on a carrier film (12) is used. An optical film with a cut is formed by forming cut lines (10a) in the width direction in advance in a strip-like optical film and arranging optical film pieces of a size corresponding to the liquid crystal cell P on the carrier film (12). A laminate roll may be used. In the case of using an optical film laminate roll with a kerf, the cutting portion becomes unnecessary.

  And in this Embodiment 1, 2, although all of the 1st, 2nd optical film piece was bonded from the upper side of the liquid crystal cell, it is not restrict | limited to this. One of them may be bonded from the upper side of the liquid crystal cell, and the other may be bonded from the lower side of the liquid crystal cell, or both may be bonded from the lower side of the liquid crystal cell.

  In the first embodiment, a polarizing film is exemplified as the optical film. The polarizing film may be, for example, a polarizer (about 1.5 to 80 μm in thickness), and a polarizer protective film (generally about 1 to 500 μm in thickness) on one side or both sides of the polarizer. It is formed without. As another film which comprises the optical film laminated body 10, retardation films (thickness is generally 10-200 micrometers), such as (lambda) / 4 board and (lambda) / 2 board, a viewing angle compensation film, a brightness improvement film, the surface, for example A protective film etc. are mentioned. The thickness of the optical film laminate is, for example, in the range of 10 μm to 500 μm. The pressure-sensitive adhesive interposed between the polarizing film and the carrier film is not particularly limited, and examples thereof include acrylic pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, and urethane-based pressure-sensitive adhesives. The layer thickness of the pressure-sensitive adhesive is, for example, preferably in the range of 10 μm to 50 μm. Examples of the peeling force between the pressure-sensitive adhesive and the carrier film include, for example, 0.15 (N / 50 mm wide sample), but the invention is not particularly limited thereto. Peeling force is measured according to JIS Z0237.

  As the carrier film, for example, conventionally known films such as plastic films (for example, polyethylene terephthalate films, polyolefin films and the like) can be used. Further, if necessary, suitable ones according to the prior art may be used, such as those coated with a suitable release agent such as silicone type, long chain alkyl type, fluorine type and molybdenum sulfide.

  The optical display panel is one in which at least an optical film piece is bonded to one side or both sides of an optical cell via an adhesive, and a drive circuit is incorporated as necessary. Examples of the optical cell include a liquid crystal cell and an organic EL cell. The liquid crystal cell may be of any type such as vertical alignment (VA) type or in-plane switching (IPS) type. The organic EL cell may be of any type such as top emission type, bottom emission type, double emission type, or the like. The liquid crystal cell P shown in FIG. 1 has a configuration in which a liquid crystal layer is sealed between a pair of substrates (a first surface (viewing side surface) P1 and a second surface (rear surface) P2) which are disposed opposite to each other.

11 1st optical film piece 21 2nd optical film piece 34 1st bonding section 41 1st area sensor camera 43 2nd area sensor camera 51 1st image inspection section 52 1st judgment section 53 2nd image inspection section 54 2nd Determination unit 141 third area sensor camera 143 fourth area sensor camera P liquid crystal cell

Claims (16)

A strip-like first optical film is formed from a roll of a first optical film laminate having a first optical film having a pressure-sensitive adhesive and a strip-like first carrier film on which the first optical film is stacked via the pressure-sensitive adhesive. The optical film piece is obtained by unwinding the film laminate and cutting at least the first optical film of the strip-like first optical film laminate in the width direction, while conveying the optical cell, while carrying the optical cell. A first bonding step of bonding the first surface of the cell;
While conveying the optical cell, the first optical film piece bonded to the first surface of the optical cell is disposed in alignment with the end in the width direction of the optical cell in the direction orthogonal to the conveying direction. A first imaging step of imaging with the first and second area sensor cameras;
From the image obtained by imaging with the first and second area sensor cameras in the first imaging step, the end portion of the optical cell in the transport direction (y) and the direction (x) orthogonal to the transport direction and the above A first image inspection step of performing image processing to calculate distances (Dx1 to Dx4, Dy1 to Dy4) to the end of the first optical film piece;
And d) a first determination step of determining a sticking displacement based on the distances (Dx1 to Dx4 and Dy1 to Dy4) calculated in the first image inspection step.   In the first imaging step, first and second corners in front of the transported optical cell are imaged by the first and second area sensor cameras, and the third and fourth ends of the transported optical cell are transported. The manufacturing method of the optical display panel of Claim 1 which images a corner | angular part with said 1st, 2nd area sensor camera. Band-like second optical film from a roll of a second optical film laminate having a second optical film having an adhesive and a band-like second carrier film in which the second optical film is laminated via the adhesive The second optical film piece obtained by unwinding the film laminate and cutting at least the second optical film of the strip-like second optical film laminate in the width direction is conveyed while conveying the optical cell. A second bonding step of bonding the second surface of the optical cell;
A second optical film piece bonded to the second surface of the optical cell is disposed in a direction perpendicular to the transport direction and in accordance with the width end of the optical cell while the optical cell is transported. 3, second imaging step of imaging with a fourth area sensor camera,
From the image obtained by imaging with the third and fourth area sensor cameras in the second imaging step, the end portion of the optical cell in the transport direction (y) and the direction (x) orthogonal to the transport direction and the above A second image inspection step of performing image processing to calculate distances (Dx5 to Dx8, Dy5 to Dy8) to the end of the second optical film piece;
The optical display panel according to claim 1, further comprising: a second determination step of determining a sticking displacement based on the distances (Dx5 to Dx8, Dy5 to Dy8) calculated in the second image inspection step. Manufacturing method.   In the second imaging step, first and second corners in front of the transported optical cell are imaged by the third and fourth area sensor cameras, and the third and fourth ends of the transported optical cell are transported. The manufacturing method of the optical display panel of Claim 3 which images a corner | angular part with the said 3rd, 4th area sensor camera.   The said 1st imaging process, the said 1st image inspection process, and the said 1st determination process are after the said 1st bonding process, and are performed before the said 2nd bonding process. The manufacturing method of the optical display panel as described. The second bonding step is configured to bond the second optical film piece to the optical cell by sending out while holding the optical cell and the second optical film piece between a pair of third and fourth rollers. There,
In the second imaging step, in a state in which the front portion or the rear portion of the optical cell and the second optical film piece is held by the third and fourth rollers, the front portion which is not held by the conveyed optical cell or The manufacturing method of the optical display panel of Claim 4 which is a structure which is imaged with the said 3rd, 4th area sensor camera of two corner parts of a back part.   7. The first image inspection step according to claim 1, wherein when the cut end face of the first optical film piece is inclined, the distance is calculated based on the line in which the thickness of the film is maintained. The manufacturing method of the optical display panel of any one statement.   The said 2nd image inspection process WHEREIN: When the cut-off end surface of the said 2nd optical film piece inclines, distance is calculated on the basis of the line by which the thickness of the film was maintained. Method of manufacturing an optical display panel A strip-like first optical film is formed from a roll of a first optical film laminate having a first optical film having a pressure-sensitive adhesive and a strip-like first carrier film on which the first optical film is stacked via the pressure-sensitive adhesive. The optical film piece is obtained by unwinding the film laminate and cutting at least the first optical film of the strip-like first optical film laminate in the width direction, while conveying the optical cell, while carrying the optical cell. A first bonding portion to be bonded to the first surface of the cell;
The first optical film piece bonded to the first surface of the optical cell is disposed in alignment with the end of the optical cell in the direction orthogonal to the transport direction while the optical cell is being transported. First and second area sensor cameras that capture the width direction end,
From the image obtained by imaging with the first and second area sensor cameras, the end of the optical cell and the first optical film piece in the transport direction (y) and the direction (x) orthogonal to the transport direction A first image inspection unit that performs image processing to calculate distances (Dx1 to Dx4, Dy1 to Dy4) to the end portion;
An optical display panel manufacturing system, comprising: a first determination unit that determines a sticking displacement based on the distances (Dx1 to Dx4 and Dy1 to Dy4) calculated by the first image inspection unit. A first detection unit is provided on the transport upstream side of the optical cell with respect to the first and second area sensor cameras.
After a predetermined period of time after the first detection unit detects the optical cell being conveyed, the first and second area sensor cameras capture the first and second corners in front of the optical cell being conveyed. ,
The first and second area sensor cameras capture the third and fourth corner portions of the rear end of the optical cell to be transported after a predetermined period of time after the first detection unit does not detect the optical cell. The manufacturing system of the optical display panel of Claim 9. Band-like second optical film from a roll of a second optical film laminate having a second optical film having an adhesive and a band-like second carrier film in which the second optical film is laminated via the adhesive The second optical film piece obtained by unwinding the film laminate and cutting at least the second optical film of the strip-like second optical film laminate in the width direction is conveyed while conveying the optical cell. A second bonding section to be bonded to the second surface of the optical cell;
The second optical film piece bonded to the second surface of the optical cell is disposed in alignment with the width end of the optical cell in a direction perpendicular to the transport direction while the optical cell is transported. Third and fourth area sensor cameras for imaging the width end;
From the image obtained by imaging with the third and fourth area sensor cameras, the distance (Dx5) between the optical cell end and the polarizing film end in the carrying direction (y) and the direction (x) orthogonal to the carrying direction A second image inspection unit that performs image processing to calculate ~ x 8 and Dy 5 to y 8);
The optical display panel according to claim 9 or 10, further comprising: a second determination unit that determines sticking displacement based on the distances (Dx5 to Dx8, Dy5 to Dy8) calculated by the second image inspection unit. Manufacturing system. A second detection unit is provided on the transport upstream side of the optical cell with respect to the third and fourth area sensor cameras,
The third and fourth area sensor cameras image the first and second corners in front of the optical cell to be conveyed after a predetermined period of time since the second detection unit detects the optical cell to be conveyed. ,
The third and fourth area sensor cameras pick up the third and fourth corners of the rear end of the optical cell to be transported after a predetermined period of time after the second detection unit has not detected the optical cell. The manufacturing system of the optical display panel according to claim 11.   The imaging processing by the first and second area sensor cameras, the image processing by the first image inspection unit, and the determination processing by the first determination unit are after the bonding processing by the first bonding unit, and the second bonding The manufacturing system of the optical display panel of Claim 11 or 12 performed before the bonding process by a part. The second bonding unit has a pair of third and fourth rollers, and sends the optical cell and the second optical film piece while sandwiching the optical cell and the second optical film piece with the third and fourth rollers to the optical cell. Bonding the second optical film pieces,
In the third and fourth area sensor cameras, the optical cell to be conveyed is held in a state in which the front portion or the rear portion of the optical cell and the second optical film piece is held by the third and fourth rollers. The system for manufacturing an optical display panel according to claim 11, wherein two corners of the not-front or back portion are imaged.   The said 1st image test | inspection part calculates distance on the basis of the line by which the thickness of the film was maintained, when the cut-off end surface of the said 1st optical film piece is inclining. The manufacturing system of the optical display panel of any one.   The second image inspection unit according to claim 11, wherein, when the cut end face of the second optical film piece is inclined, the second image inspection unit calculates a distance on the basis of a line in which the thickness of the film is maintained. Optical display panel manufacturing system.

Images