TWI673539B - Manufacturing method of optical display panel and manufacturing system of optical display panel - Google Patents

Abstract

The present invention provides a camera that can capture four corners of two sides of a panel with fewer area sensor cameras, can save space in the inspection area, and can perform high-precision inspection to achieve continuous production of high-quality optical display panels. Manufacturing method of optical display panel.

The manufacturing method of the optical display panel includes: a first bonding step, where the first optical film is bonded to the first side of the optical unit while the optical unit is being transported; and a first photographing step, while the optical unit is being transported, by The first and second area sensor cameras capture the bonding position of the first optical film attached to the first surface of the optical unit; the first image inspection step is based on the first and second area sensor cameras. The captured image is subjected to image processing to calculate the distance between the end of the optical unit in the conveying direction (y) and the direction (x) orthogonal to the conveying direction and the end of the first optical film; And the first determination step is to determine the fit deviation based on the calculated distance.

Description

Manufacturing method of optical display panel and manufacturing system of optical display panel

The present invention relates to a method for checking whether the bonding of an optical film to the main surface of an optical display panel is good (bonding deviation) in a method of manufacturing an optical display panel and a manufacturing system of the optical display panel.

As a method for checking whether the pasting is good, for example, there is a method of photographing the four corners of the panel with a camera in a state where the optical display panel where the optical film is attached to the two main surfaces is stopped. , Check the fit deviation. In this case, the camera and the lighting are arranged on two diagonal corners on the first side of the panel, and the camera and the lighting are arranged on 2 diagonal corners of the other side. Corners. In order to photograph each of the four corners at a time in the stopped state, two inspection areas of the panel are required during inspection.

Patent Document 1 describes a method of photographing all four corners of a polarizing plate (rectangular) bonded to a liquid crystal panel. In paragraph 0040, it is described that it is necessary to stop the polarizing plate (and the liquid crystal panel) when using the area sensor camera.

Patent Document 2 describes a method of inspecting the accuracy of the polarizing plate by taking a picture of a side surface of a liquid crystal panel with a polarizing plate (rectangular shape) by a CCD camera. It is described that by rotating the liquid crystal panel horizontally by 90 °, it is possible to inspect four corners with two CCD cameras. During the inspection, the liquid crystal panel was transferred from the adsorption workbench to the liquid crystal unit inspection workbench, and fixed to the workbench for shooting by the CCD camera.

Patent Document 3 describes that in a state where it is stopped after being transported to an inspection position, Method for photographing a liquid crystal display panel by an area inspection unit.

Prior art literature Patent literature

[Patent Document 1] Japanese Patent Laid-Open No. 2011-197281

[Patent Document 2] Japanese Patent Laid-Open No. 2004-233184

[Patent Document 3] Japanese Patent Laid-Open No. 2012-27003

However, in the previous inspection methods and inspections such as Patent Documents 1 and 3, since the liquid crystal display panel is stopped and imaging is performed by the area sensor camera, there is a problem that the production speed is reduced. In addition, in order to capture the four corners of the panel, four cameras are required.

Patent Documents 1 and 3 describe a method of photographing a liquid crystal display panel while a line sensor camera is being transported. However, in this method, although the lamination position (lamination deviation) in the conveying direction can be checked, it is difficult to detect the lamination deviation in the width direction in a direction orthogonal to the conveying direction with high accuracy.

The present invention has been made in view of the above-mentioned actual situation, and an object thereof is to provide a camera capable of capturing four corners of two faces of a panel with a small number of area sensor cameras, saving space in the inspection area, and enabling High-precision inspection to continuously produce high-quality optical display panel manufacturing method and optical display panel manufacturing system.

In order to solve the above problems, after earnest research, the following inventions have been completed.

The manufacturing method of the optical display panel of the present invention includes: a first bonding step, which releases the first optical film laminated body in the form of a strip from a roll of the first optical film laminated body, and transports the optical unit in the width direction The first optical film obtained by cutting at least the first optical film in the band-shaped first optical film laminate is bonded to the above. A first surface of an optical unit, wherein the first optical film laminate includes the first optical film having an adhesive, and a first carrier film in the shape of a belt having the first optical film laminated via the adhesive; In the first imaging step, while the optical unit is being transported, the first and second area sensor cameras arranged at the end of the optical unit in the width direction in a direction orthogonal to the transport direction are photographed and attached to the above The bonding position of the first optical film on the first surface of the optical unit; the first image inspection step is based on the images obtained by the first and second area sensor cameras in the first photographing step, Perform image processing to calculate the distance (Dx1 ~ Dx4, Dy1 ~) between the end of the optical unit and the end of the first optical film in the conveying direction (y) and the direction (x) orthogonal to the conveying direction. Dy4); and a first determination step of determining a deviation of the fit based on the distances (Dx1 to Dx4, Dy1 to Dy4) calculated in the first image inspection step.

According to this configuration, the four corners of the two surfaces of the panel can be captured by a small area sensor camera, which can save space in the inspection area (can also be used as the transport area of an optical display panel), and can perform high-precision inspection Thereby, high-quality optical display panels can be continuously produced.

As an embodiment of the invention described above, the method includes a first storage step for storing a defective optical unit when it is determined to be defective in the first determination step, and a first good product transport step for which the determination is made in the first determination step. In the case of a good product, the good optical unit is moved to the rear stage.

As an embodiment of the invention described above, in the first photographing step, the first and second corners of the optical unit to be transported (downstream side in the transport direction) are photographed by the first and second area sensor cameras. The third and fourth corner portions of the rear (on the upstream side in the conveying direction) of the optical unit being conveyed are captured by the above-mentioned first and second area sensor cameras. That is, the first area sensor camera captures the first and third corner portions, and the second area sensor camera captures the first 2. The 4th corner. The first corner portion and the third corner portion are arranged parallel to the conveyance direction, and the second corner portion and the fourth corner portion are arranged parallel to the conveyance direction. The first corner portion and the second corner portion are arranged in a direction orthogonal to the conveying direction.

As an embodiment of the above invention, the method further includes a second bonding step of releasing the second optical film laminate from the roll of the second optical film laminate, and conveying the optical unit while the optical unit A second optical film obtained by cutting at least a second optical film in the strip-shaped second optical film laminate in a direction is bonded to a second surface of the optical unit, and the second optical film laminate includes: The second optical film of the adhesive and the second carrier film in the shape of a belt laminated with the second optical film through the adhesive; the second photographing step is used to transport the optical unit at the same time as the transport direction The third and fourth area sensor cameras arranged at the intersections in the width direction of the optical unit and photographing the bonding position of the second optical film that is bonded to the second surface of the optical unit; 2 image inspection steps, based on the images captured by the 3rd and 4th area sensor cameras in the above 2nd shooting step, image processing is performed to calculate the conveying direction (y) and orthogonal to the conveying direction Of the optical unit in the direction (x) The distance (Dx5 ~ Dx8, Dy5 ~ Dy8) between the end of the second optical film and the end of the second optical film; and the second determination step is based on the distance (Dx5 ~ Dx8, Dy5 ~ Dy8) to determine the deviation of fit.

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

As an embodiment of the invention described above, the method includes a second storage step for storing a defective optical unit when it is determined to be defective in the second determination step, and a second good product transport step for which the determination is made in the second determination step. In the case of a good product, the good optical unit is moved to the rear stage.

As an embodiment of the invention described above, in the second photographing step, the first and second corners of the optical unit to be transported are captured by the third and fourth area sensor cameras, and the first 3. The fourth area sensor camera captures the third and fourth corners behind the optical unit being carried. That is, the third area sensor camera images the first and third corner portions, and the fourth area sensor camera images the second and fourth corner portions.

As an embodiment of the 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.

According to this configuration, before the second bonding step, the optical unit (the optical unit in which the optical film is bonded to only one surface) can be excluded from the defective optical unit.

As an embodiment of the above invention, in the first bonding step, the optical unit and the first optical film are held while being held by a pair of first and second rollers, so that the first The optical film is bonded to the optical unit, and in the first photographing step, the optical unit and the rear portion of the first optical film are sandwiched by the first and second rollers. 1. The second area sensor camera captures the first and second corners in front of the optical unit being transported.

According to this configuration, it is possible to photograph the front of the optical unit by the first and second area sensor cameras while the rear portion (for example, the rear end portion) of the panel is held by the first and second rollers. The first and second corner portions can further save space in the inspection area. Moreover, when using a conveyance roller as a conveyance part which conveys an optical unit, for example, an optical unit may generate | occur | produce vibration at the time of conveyance. By holding the optical unit with the first and second rollers, the first and second corners can be captured with the vibration suppressed.

As an embodiment of the above invention, in the second bonding step, the optical unit and the second optical film are sandwiched by a pair of third and fourth rollers and sent out at the same time, so that the second The optical film is bonded to the optical unit, and the optical unit is held between the third and fourth rollers in the second photographing step. And in the state of the rear portion of the second optical film, the first and second corner portions of the front of the transported optical unit are captured by the third and fourth area sensor cameras.

According to this configuration, the front side of the optical unit can be captured by the third and fourth area sensor cameras in a state where the rear portion (for example, the rear end portion) of the panel is held by the third and fourth rollers. The first and second corner portions can further reduce the space in the inspection area. Moreover, when using a conveyance roller as a conveyance part which conveys an optical unit, for example, an optical unit may generate | occur | produce vibration at the time of conveyance. By using the third and fourth rollers to hold the optical unit, the first and second corners can be captured with the vibration suppressed.

As an embodiment of the invention described above, in the first image inspection step, the cut end surface of the first optical film (cut in a width direction crossing (orthogonal to) the strip-shaped long side direction) In the case where the end surface is inclined, the distance is calculated on the basis of the line that maintains the thickness of the film.

According to this configuration, a line having a constant thickness can be read at all times, and the accuracy of the position inspection can be improved.

As an embodiment of the above invention, in the second image inspection step, the cut end face of the second optical film (cut in a width direction crossing (orthogonal to) the strip-shaped long side direction) In the case where the end surface is inclined, the distance is calculated on the basis of the line that maintains the thickness of the film.

According to this configuration, a line having a constant thickness can be read at all times, and the accuracy of the position inspection can be improved.

The manufacturing system of an optical display panel of the present invention includes a first bonding section that releases a strip-shaped first optical film laminated body from a roll of the first optical film laminated body, and transports the optical unit in the width direction. A first optical film obtained by cutting at least the first optical film in the band-shaped first optical film laminate is adhered to the first surface of the optical unit, and the first optical film laminate includes: The above-mentioned first optical film of the adhesive, and the first tape-shaped first carrier having the first optical film laminated via the adhesive Body film; the first and second area sensor cameras are aligned with the widthwise end of the optical unit in a direction orthogonal to the conveying direction and are arranged to capture the widthwise end of the optical unit, and the optical unit is conveyed At the same time, the lamination position of the first optical film attached to the first surface of the optical unit is taken at the same time; the first image inspection unit is based on the pictures obtained by the first and second area sensor cameras. Image, perform image processing to calculate the distance (Dx1 ~ Dx4, Dy1 to Dy4); and a first determination unit that determines the deviation of the fit based on the distances (Dx1 to Dx4, Dy1 to Dy4) calculated by the first image inspection unit.

As one embodiment of the invention described above, the first storage section includes a defective optical unit when it is determined to be defective by the first determination section, and a first good transport section is determined by the first determination section as In the case of a good product, the good optical unit is moved to the rear stage.

As an embodiment of the invention described above, a first detection unit is provided on the upstream side of the transport of the optical unit than the first and second area sensor cameras, and the transported optical unit is detected from the first detection unit. After a certain period of time has passed, the first and second corners in front of the optical unit being transported by the first and second area sensor cameras are photographed. When the optical unit is not detected by the first detection unit, the optical unit starts to pass the specific period. After that period, the first and second area sensor cameras capture the third and fourth corners of the rear end of the transported optical unit.

As an embodiment of the invention described above, it is further provided with a second bonding section that releases the tape-shaped second optical film laminate from a roll of the second optical film laminate, and conveys the optical unit while the Cut the above strip in the direction A second optical film obtained from at least a second optical film in the second optical film laminate is bonded to the second surface of the optical unit, wherein the second optical film laminate includes the first optical film having an adhesive. 2 optical films, and a strip-shaped second carrier film in which the second optical film is laminated through the adhesive; the third and fourth area sensor cameras are aligned with the optical direction in a direction orthogonal to the conveying direction The width-wise end of the unit is configured to capture the width-wise end, and the second optical film is bonded to the second surface of the optical unit while the optical unit is being transported; the second image inspection is performed. Based on the images obtained by the third and fourth area sensor cameras and performing image processing to calculate the transport direction (y) and the optical unit in the direction (x) orthogonal to the transport direction The distance between the end and the end of the polarizing film (Dx5 to x8, Dy5 to y8); and a second determination unit based on the distances (Dx5 to Dx8, Dy5 to Dy8) calculated by the second image inspection unit To determine the fit deviation.

As an embodiment of the invention described above, the second storage unit includes a second storage unit that stores a defective optical unit when it is determined to be defective by the second determination unit, and a second good transport unit that is configured by the second determination unit. When it is judged to be a good product, the good optical unit is transferred to the subsequent stage.

As an embodiment of the invention described above, a second detection unit is provided on the upstream side of the transport of the optical unit compared to the third and fourth area sensor cameras, and the optical unit to be transported is detected from the second detection unit. After a certain period of time has passed, the first and second corners in front of the optical unit being transported by the third and fourth area sensor cameras are photographed. After the optical unit is not detected by the second detection unit, the optical unit starts to pass through After that period, the third and fourth area sensor cameras capture the third and fourth corners of the rear end of the optical unit being carried.

As one embodiment of the above invention, the shooting processing of the first and second area sensor cameras, the image processing of the first image inspection section, and the determination processing of the first determination section are performed by the first bonding section. It is performed after the bonding process and before the bonding process of the 2nd bonding part.

As an embodiment of the invention described above, the first bonding section has a pair of first and second rollers, and the first optical film and the first optical film are held by the first and second rollers while being sent out. Therefore, the first optical film is bonded to the optical unit, and the first and second area sensor cameras are sandwiched between the optical unit and the first optical film by the first and second rollers. In the state of the square part, photograph the first and second corners in front of the optical unit being transported.

As an embodiment of the above invention, the second bonding portion includes a pair of third and fourth rollers, and the third optical unit and the second optical film are held by the third and fourth rollers while being sent out. Therefore, the second optical film is bonded to the optical unit, and the third and fourth area sensor cameras are sandwiched between the optical unit and the second optical film by the third and fourth rollers. In the state of the square part, photograph the first and second corners in front of the optical unit being transported.

As an embodiment of the invention described above, the first image inspection section is cut at an end face of the first optical film (the end face cut in a width direction crossing (orthogonal to) the strip-shaped long side direction) ) In the case of tilt, the distance is calculated based on the line that maintains the thickness of the film.

As an embodiment of the invention described above, the second image inspection section is cut at an end face of the second optical film (the end face cut in a width direction crossing (orthogonal to) the strip-shaped long side direction) ) In the case of tilt, the distance is calculated based on the line that maintains the thickness of the film.

The manufacturing system of the optical display panel of the above invention has the same effect as the manufacturing method of the above optical display panel.

1‧‧‧The first optical film laminate roll

2‧‧‧The second optical film laminate roll

10‧‧‧The first optical film laminate

10a‧‧‧cut-in section

11‧‧‧The first optical film ˙ polarizing film

11a‧‧‧ membrane body

11b‧‧‧Adhesive

12‧‧‧ the first carrier film

20‧‧‧The second optical film laminate

20a‧‧‧cut-in department

21‧‧‧The second optical film

21a‧‧‧ film body

21b‧‧‧Adhesive

22‧‧‧ 2nd carrier film

31‧‧‧cut-off section

32‧‧‧Tension adjustment department

33‧‧‧The first peeling part

34‧‧‧The first laminating section

34a‧‧‧Roll 1

34b‧‧‧Roll 2

35‧‧‧ Take-up Department

41‧‧‧1st area sensor camera

42‧‧‧The first reflection lighting unit

43‧‧‧ 2nd area sensor camera

44‧‧‧Second reflective lighting

45‧‧‧The first detection department

50‧‧‧Control Department

51‧‧‧The first image inspection section

52‧‧‧The first judgment department

53‧‧‧Second image inspection section

54‧‧‧Second Judgment Division

71‧‧‧The first transfer department

72‧‧‧ The second transfer department

73‧‧‧Configuration Replacement Department

74‧‧‧ the third transfer department

75‧‧‧The fourth transfer department

81‧‧‧Storage

82‧‧‧Defective goods storage department

83‧‧‧Storage

84‧‧‧Defective goods storage department

131‧‧‧cut-off section

132‧‧‧Tension adjustment department

133‧‧‧Second peeling part

134‧‧‧Second Laminating Section

134a‧‧‧3rd roller

134b‧‧‧4th roller

135‧‧‧Rewinding Department

141‧‧‧3rd area sensor camera

142‧‧‧3rd reflective lighting unit

143‧‧‧ 4th area sensor camera

144‧‧‧Fourth reflective lighting

145‧‧‧Second Detection Section

Black matrix inside BM‧‧‧ LCD cell

Dx2‧‧‧distance

Dy2‧‧‧distance

L0y‧‧‧The end of the first optical film 11

L1y‧‧‧The end of the first optical film 11

Mx2‧‧‧distance

My2‧‧‧distance

P‧‧‧LCD unit

P0y‧‧‧End of liquid crystal cell P

P1‧‧‧Part 1

P2‧‧‧Part 2

R‧‧‧ transport roller

FIG. 1 is a schematic diagram showing an example of a manufacturing system for an optical display panel.

FIG. 2 is a diagram illustrating an inspection method by the image inspection section.

FIG. 3 is a diagram illustrating an inspection method by the image inspection section.

FIG. 4 is a diagram illustrating an inspection method by the image inspection section.

FIG. 5 is a diagram illustrating an inspection method by the image inspection section.

FIG. 6 is a diagram showing an example of an inspection image.

FIG. 7 is a diagram showing an example of the measurement method.

FIG. 8 is a diagram showing an example of a measurement method.

FIG. 9 is a diagram illustrating an inspection method by the image inspection section.

FIG. 10 is a diagram illustrating another example of the shooting method.

(Embodiment 1)

FIG. 1 is a schematic diagram of a manufacturing system of an optical display panel according to the first embodiment. 2 to 5 are diagrams showing the inspection methods performed by the inspection section. FIG. 6 is an example of an inspection image. Hereinafter, a manufacturing system of the optical display panel according to this embodiment will be described in detail with reference to FIGS. 1 to 6.

In this embodiment, a liquid crystal cell is described as an optical unit, and a liquid crystal display panel is described as an optical display panel. Moreover, the member shown in FIG. 1 was used as the roll of the optical film laminated body. That is, as the first optical film laminate roll 1, a first optical film having a belt-shaped absorption axis in the longitudinal direction is laminated on the first carrier film 12 (the first optical film 11 is formed after cutting). (Film body 11a, adhesive 11b)) The first optical film laminate 10 in the shape of a strip. Here, the first optical film laminate 10 has a width corresponding to the short side of the liquid crystal cell P (the width is substantially shorter than the short side of the liquid crystal cell P). As the second optical film laminate roll 2, a second optical film having a belt-shaped absorption axis in the longitudinal direction is laminated on the second carrier film 22 (a second optical film 21 (film body is formed after cutting) 21a, the adhesive-like second optical film laminate 20 of the adhesive 21b)). Here, the second optical film laminate 20 has a liquid crystal unit The width corresponding to the long side of the element P (which is substantially shorter than the long side of the liquid crystal cell P).

As shown in FIG. 1, the manufacturing system of a liquid crystal display panel according to this embodiment includes a first conveying section 71 that conveys a liquid crystal cell P to a first bonding section 34 and a second conveying section 72 that conveys a liquid crystal cell P The first surface P1 of the liquid crystal cell P after the first optical film 11 is bonded; a replacement section 73 is provided, which reverses the upper and lower surfaces (P1, P2) and replaces the short side and the long side of the liquid crystal cell P in the transport direction Side; a third transfer unit 74 (equivalent to the first good product transfer unit), which transfers the liquid crystal cell P replaced by the placement replacement unit 73 to the second bonding unit 134; and a fourth transfer unit 75 (equivalent to the second transfer unit) Good product transfer section), which is transported to the second surface P2 of the liquid crystal cell P after the second optical film 21 is bonded to the liquid crystal cell P (the liquid crystal cell in a state where the optical film is bonded to both sides is called a "liquid crystal display panel "). Each conveying unit is configured to have a plurality of conveying rollers R that convey the liquid crystal cell P by rotating around a rotation axis, and the rotation axis is parallel to a direction orthogonal to the conveying direction. Moreover, it may be comprised so that it may have a suction plate etc. in addition to a conveyance roller.

(Liquid crystal cell transfer procedure)

The liquid crystal cell P is arranged toward the first conveyance part 71 from the storage part 81 which stores the liquid crystal cell P so that the first surface P1 becomes the top surface, and the liquid crystal cell P is conveyed toward the first bonding part 34 by the rotation of the conveying roller.

(First optical film laminate release step, optical film cutting step)

On the other hand, the first optical film laminate 10 released from the first optical film laminate roll 1 is adsorbed and fixed on the first carrier film 12 side, and the first carrier film 12 is not cut by the cutting section 31. If it is left as it is, the first optical film is cut to a specific size (a length corresponding to the long side of the liquid crystal cell P (the substantially longer side is shorter)), and a plurality of first carrier films 12 are formed. First optical film 11. Examples of the cutting unit 31 include cutting using a cutter (cutting by a cutting tool) and cutting by a laser.

The arrow in FIG. 1 shows an example of the cut-in portion 10 a after cutting, but the cut-in interval is exaggerated for convenience of explanation. In the case where the cutter is a double-edged blade, the cutting surface advances toward the cutting depth direction, and as shown in FIG. 8, the cutting surface is inclined. In the case of a single blade, the inclined blade The cut surface at the surface is inclined as shown in FIG. 8. The measurement method in the case of the inclined cut surface will be described later.

A configuration may also be adopted in which a nip roller (not shown) is disposed on the upstream side or the downstream side of the cutting section 31 and the first optical film laminate 10 is conveyed. The nip rollers may be arranged on the upstream side and the downstream side of the cutting section 31.

(Tension adjustment procedure)

In order to perform continuous processing without interruption for a long time and adjust film slack in the cutting process and subsequent bonding process of the first optical film laminated body 10, a tension adjustment unit 32 is provided. The tension adjustment unit 32 is configured to include, for example, a tension adjustment mechanism using a weight. A configuration may also be adopted in which a nip roller (not shown) is disposed on the upstream side or downstream side of the tension adjustment section 32 to convey the first optical film laminate 10. The nip rollers may be arranged on the upstream side and the downstream side of the tension adjustment section 32.

(Peeling step)

The first optical film laminate 10 is flexibly inverted at the first peeling portion 33, and the first optical film 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 includes a roller and a rotation driving unit, and the rotation driving unit rotates the roller to wind the first carrier film 12 around the roller. In addition, a configuration may be adopted in which a nip roller (not shown) is 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 arranged on the upstream side and the downstream side of the peeling section 33.

(1st bonding step)

While the first bonding portion 34 conveys the liquid crystal cell P, the first optical film sheet 11 peeled from the first carrier film 12 is bonded to the first surface P1 of the liquid crystal cell P via the adhesive 11b. The first bonding portion 34 includes a pair of first rollers 34a and a second roller 34b. Either one is a driving roller and the other is a driven roller, or both rollers are driving rollers. The first optical film 11 and the liquid crystal cell P are conveyed downstream while holding the first optical film 11 and the liquid crystal cell P by a pair of first rollers 34a and second rollers 34b, thereby bonding the first optical film 11 to the first of the liquid crystal cell P.面 P1。 Surface P1.

(First shooting step)

The liquid crystal cell P after the first optical film 11 is bonded to the first surface P1 of the liquid crystal cell P is transported downstream by the second transporting section 72. While the liquid crystal cell P is being conveyed by the second conveying section 72, the second position is used to align the widthwise end (A1 to A4) of the liquid crystal cell P in a direction (x) orthogonal to the conveying direction (y). The one-area sensor camera 41 and the second-area sensor camera 43 capture the positions of the first optical film 11 bonded to the first surface P1 of the liquid crystal cell P. The first corner portion A1 in front of the liquid crystal cell P and the third corner portion A3 behind the liquid crystal cell P are captured by the first area sensor camera 41. On the other hand, the second corner sensor A2 in front of the liquid crystal cell P and the fourth corner A4 in the rear are captured by the second area sensor camera 43.

A first detection section 45 is disposed above the second conveyance section 72, and a first area sensor camera 41 and a second area sensor camera 43 are disposed downstream thereof. First, as shown in FIG. 2, the first detection unit 45 detects a 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 to perform imaging after a certain period of time has elapsed since the detection. Here, the "specific period elapsed since the detection" is based on the distance between the first detection section 45 and the first and second area sensor cameras 41 and 43, the size of the liquid crystal cell in the transport direction, and the liquid crystal cell transport speed. While setting. The first detection unit 45 can be configured by a reflective light sensor or the like. After a certain period has elapsed from the timing of the detection signal, the control section 50 that has received the detection signal (ON signal) from the first detection section 45 sends the first area sensor camera 41 and the second area sensor camera 43 sends a command signal for driving the first area sensor camera 41 and the second area sensor camera 43. Based on the command signal, the first area sensor camera 41 and the second area sensor camera 43 are driven, and The first and second corners A1 and A2 are photographed.

Next, as shown in FIG. 4, when the liquid crystal cell P is carried forward and the first detection unit 45 cannot detect the liquid crystal cell P, a non-detection signal (OFF signal) is transmitted to the control unit 50. As shown in FIG. 5, the control unit 50 drives the first area sensor camera 41 and the second area sensor camera 43 after a certain period has elapsed from the timing of the non-detection (OFF signal). A command signal is sent to the first area sensor camera 41 and the second area sensor camera 43. Based on the command signal, the first area sensor camera 41 and the second area sensor camera 43 are driven to capture the third, The fourth corners A3 and A4. Here, "a certain period of time has passed since the timing of the non-detection signal" is based on the distance between the first detection unit 45 and the first and second area sensors 41 and 43 and the size of the liquid crystal cell in the transport direction. , Set the liquid crystal cell transport speed.

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-shaped illumination section is provided in front of the imaging sections of the first and second area sensor cameras 41 and 43, and is located opposite to the imaging section of the camera, that is, below the transfer roller R, adjacent to each other. The first and second reflective lighting units 42 and 44 are arranged between the conveying rollers R. The irradiated light from the ring-shaped illuminating portion is reflected by the first and second reflective illuminating portions 42, 44 and irradiates the end portion of the liquid crystal cell P and the end portion of the first optical film 11 from the back surface, so that the end line (edge line ) Significant. Thereby, the end line (edge line) is photographed clearly. The first and second reflective lighting sections 42 and 44 may be configured by a mirror and a reflecting member.

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

In addition, as another embodiment, a configuration may be adopted in which only the illumination section that illuminates the liquid crystal cell from the camera side is used, and the reflection illumination section is omitted. Moreover, as another embodiment, a transmission light source may be arranged below the conveyance roller R between adjacent conveyance rollers R, and a transmitted light image may be captured by an area camera disposed above the transmission roller R.

(1st image inspection step)

The first image inspection unit 51 calculates a conveyance direction (y) and a direction orthogonal to the conveyance direction (y) based on images captured by the first and second area sensor cameras 41 and 43 and performs image processing. x) The distance (Dx1 ~ Dx4, Dy1 ~ Dy4) between the end of the liquid crystal cell P on the top and the end of the first optical film 11.

Specifically, description is made with reference to FIGS. 6 and 7. The first image inspecting section 51 The image obtained by the second area sensor camera 43 is subjected to image processing. The image obtained after image processing is shown in Figure 6. At this time, the distance (Dy2) between the end portion P0y of the liquid crystal cell P in the conveying direction (y) and the end portion L0y of the first optical film 11 is obtained by analyzing the number of pixels and adding the number of pixels. ). Similarly, by analyzing the number of pixels and adding the number of pixels, the distance between the end of the liquid crystal cell P in the direction (x) orthogonal to the conveying direction and the end of the first optical film 11 is obtained. Distance (Dx2). The x-direction measurement position when Dy2 is obtained 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 when Dx2 is obtained is a position from the y-direction end of the liquid crystal cell P by a distance My2. Set the distances Mx2 and My2 in advance. Other distances Dx1, Dx3, Dx4, Dy1, Dy3, and Dy4 can be calculated in the same manner. Similarly, the distances Mx1, Mx3, Mx4, My1, My3, and My4 in this case are set in advance.

As shown in FIG. 8, when the first image inspection section 51 is inclined toward the inner side of the first optical film 11, the end portion P0y of the liquid crystal cell P and the first optical film 11 are calculated. The distance between the ends L1y. That is, the distance is calculated based on the edge line that maintains the thickness of the first optical film 11. Thereby, a line with a constant thickness can be read at all times, and the accuracy of the position inspection can be improved. FIG. 8 shows an example in which the edges of the bonding surface of the first optical film 11 protrude, and a surface other than the bonding surface is introduced into the inside of the film surface. For example, when a double-edged blade is used as the first cutting portion 31, the cutting surface of the first optical film 11 shown in FIG. 8 is obtained.

(First determination step)

The first determination unit 52 determines a bonding 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 (preset) reference bonding distance (set at each of the four corners) and the calculated Dx1 to Dx4 and Dy1 to Dy4. 100 ~ ± 500μm), it is judged as a good product. On the other hand, when the difference does not fall within a specific value range, it is judged as a defective product.

(First alignment correction step)

When the first determination unit 52 determines that it is defective, 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 section 33 and a method of adjusting the liquid crystal cell P by rotating it with respect to the conveying direction.

(First storage step of defective products)

When it is judged that the first determination unit 52 is defective, as shown in FIG. 1, the defective liquid crystal cell P is branched from the second conveyance unit 72, and the defective liquid crystal cell P is conveyed toward the defective product storage unit 82, and the defective product is This is stored in the storage portion 81. On the other hand, when it is judged that it is a good product by the 1st determination part 52, the good product liquid crystal cell P is conveyed to a backward stage (1st good product conveyance process).

In addition, for the defective liquid crystal cell P, the first optical film 11 may be peeled from the liquid crystal cell P and then transferred to the storage unit 81.

Furthermore, as another embodiment of the first image inspection unit 51 and the first determination unit 52 described above, the first image inspection unit 51 may also calculate the end portions of the BM in the x and y directions and the end of the first optical film 11. The distance between the departments. Then, the first determination unit 52 can determine the bonding deviation based on the distance.

(Configuration replacement steps)

The replacement unit 73 is arranged to invert the upper and lower surfaces (P1, P2) of the liquid crystal cell P, which is a good product, transported by the second transport unit 72, and replace the short side and the long side of the liquid crystal cell P in the transport direction (y). As the arrangement replacement unit 73, a known mechanism can be adopted as appropriate. In the first embodiment, the disposition replacement unit 73 includes a rotation unit that adsorbs the liquid crystal cell P and rotates it horizontally by 90 °, and a reversing unit that adsorbs the liquid crystal cell P and reverses the front and back surfaces.

(Liquid crystal cell transfer procedure)

After the process of disposing the replacement section 73, the liquid crystal cell P is transported to the second bonding section 134 by the third transport section 74.

(Second optical film laminate release step, optical film cutting step)

The second optical film laminated body 20 released from the second optical film laminated body roll 2 adsorbs and fixes the second At the same time as the carrier film 22 side, the second optical film is cut to a specific size (a length corresponding to the short side of the liquid crystal cell P (substantially The short side has a short length)), and a plurality of second optical film sheets 21 are formed on the second carrier film. Examples of the cutting unit 131 include cutting using a cutter (cutting by a cutting tool) and cutting by a laser.

An example of the cut-in portion 20a after cutting is shown by an arrow in FIG. 1, but the cut-in interval is exaggerated for convenience of explanation.

A configuration may also be adopted in which a nip roller (not shown) is disposed on the upstream side or the downstream side of the cutting section 131 to transport the second optical film laminate 20. The nip rollers may be arranged on the upstream side and the downstream side of the cutting portion 131.

(Tension adjustment procedure)

In order to perform continuous processing without interruption for a long time in the cutting process of the second optical film laminated body 20 and the subsequent bonding process, and to adjust the slack of the film, a tension adjustment unit 132 is provided. The tension adjustment unit 132 is configured to include a tension adjustment mechanism using a weight, for example. A configuration may also be adopted in which a nip roller (not shown) is disposed on the upstream side or the downstream side of the tension adjustment section 132 to transport the second optical film laminate 20. Furthermore, the nip rollers may be arranged on the upstream side and the downstream side of the tension adjustment section 132.

(Peeling step)

The second optical film laminate 20 is flexibly inverted at the second peeling portion 133, and the second optical film 21 is peeled from the second carrier film 22. The second carrier film 22 is wound on a roll by the winding unit 135. The winding unit 135 includes a roller and a rotation driving unit, and the rotation driving unit rotates the roller to wind the second carrier film 22 around the roller. In addition, a configuration may be adopted in which a nip roller (not shown) is disposed on the upstream side or the downstream side of the peeling section 133 to transport the second optical film laminate 20 or the second carrier film 22. The nip rollers may be arranged on the upstream side and the downstream side of the peeling portion 133.

(2nd bonding step)

While the second bonding section 134 transports the liquid crystal cell P, the second bonding section 134 peels off the second carrier film 22 from the second carrier film 22. 2 The optical film 21 is bonded to the second surface P2 of the liquid crystal cell P via an adhesive 21b. The second bonding portion 134 includes a pair of third rollers 134a and a fourth roller 134b. One can be a driving roller and the other is a driven roller, or two rollers are both driving rollers. The second optical film 21 and the liquid crystal cell P are held by a pair of the third roller 134a and the fourth roller 134b while being held downstream, thereby bonding the second optical film 21 to the liquid crystal cell P. The second side P2.

(2nd shooting step)

The liquid crystal cell P (liquid crystal display panel) after the second optical film 21 is adhered to the second surface P2 of the liquid crystal cell P is transported downstream by the fourth transporting section 75. While the liquid crystal cell P is being conveyed by the fourth conveying section 75, the third part is arranged to align the widthwise end (B1 to B4) of the liquid crystal cell P in a direction (x) orthogonal to the conveying direction (y). The area sensor camera 141 and the fourth area sensor camera 143 capture a bonding position of the second optical film 21 bonded to the second surface P2 of the liquid crystal cell P (see FIG. 9). The third area sensor camera 141 captures the first corner B1 in front of the liquid crystal cell P and the third corner B3 in the rear. On the other hand, the fourth area sensor camera 143 captures the second corner B2 in front of the liquid crystal cell P and the fourth corner B4 in the rear.

As shown in FIG. 9, the second detection unit 145 is disposed above the fourth conveyance unit 75, and a third area sensor camera 141 and a fourth area sensor camera 143 are placed downstream thereof. The second detection unit 145 detects a front portion of the liquid crystal cell P. After a certain period of time has elapsed since this detection, the third area sensor camera 141 and the fourth area sensor camera 143 are driven to take an image. Here, "the specific period has elapsed since the detection" is based on 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 of the liquid crystal cell. Speed. The second detection unit 145 may be configured by a reflective light sensor or the like. After receiving the detection signal (ON signal) from the second detection unit 145, the control unit 50 sends the detection signal to the third area sensor camera 141 and the fourth area sensor after a certain period has elapsed from the timing of the detection signal. The camera 143 sends a command signal for driving the third area sensor camera 141 and the fourth area sensor camera 143, and drives based on the command signal. The third area sensor camera 141 and the fourth area sensor camera 143 capture the first and second corner portions B1 and B2.

Next, when the liquid crystal cell P is conveyed forward and the second detection unit 145 cannot detect the liquid crystal cell P, a non-detection signal (OFF signal) is transmitted to the control unit 50. The control unit 50 drives the third area sensor camera 141 and the fourth area sensor camera 143 to drive the third area sensor camera 141 after a specific period has elapsed from the timing of the non-detection (OFF signal). And a command signal of the fourth area sensor camera 143, and based on the command signal, the third area sensor camera 141 and the fourth area sensor camera 143 are driven to capture the third and fourth corner portions B3 and B4. Here, "a certain period of time has passed since the timing of the non-detection signal" is based on the distance between the second detection unit 145 and the third and fourth area sensor cameras 141 and 143, and the liquid crystal cell in the transport direction. The size and the liquid crystal cell transfer speed are set.

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-shaped illumination portion is provided in front of the imaging portions of the third and fourth area sensor cameras 141 and 143, and the opposite position of the imaging area of the camera, that is, below the transfer roller R, is adjacent to The third and fourth reflective lighting sections 142 and 144 are arranged between the conveying rollers R. The irradiated light from the ring-shaped illuminating part is reflected by the third and fourth reflective illuminating parts 142 and 144, and the end of the liquid crystal cell P and the end of the second optical film 21 are irradiated from the back side so that the end line (edge line) Significant. Thereby, the end line (edge line) can be captured clearly. The third and fourth reflective lighting sections 142 and 144 may be configured by a mirror and a reflecting member.

In addition, as another embodiment, a configuration may be adopted in which only the illumination section that illuminates the liquid crystal cell from the camera side is used, and the reflection illumination section is omitted. Moreover, as another embodiment, a transmission light source may be arranged below the conveyance roller R between adjacent conveyance rollers R, and a transmission light image may be captured by an area camera disposed above the conveyance roller R.

(2nd image inspection step)

The second image inspection unit 53 calculates the conveyance direction (y) and the direction orthogonal to the conveyance direction (x) by performing image processing based on the images captured by the third and fourth area sensor cameras 141 and 143. The distance between the end of the upper liquid crystal cell P and the end of the second optical film 21 (Dx5 to Dx8, Dy5 to Dy8). The specific calculation method is the same as that of the first image inspection unit 51, and therefore description thereof is omitted.

(Second determination step)

The second determination unit 54 determines a bonding 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 (preset) reference bonding distance (the four corners are set separately) and the calculated Dx5 to Dx8 and Dy5 to Dy8. If the difference is a specific value (for example, ± 100 ~ ± 500μm), it is judged as a good product. On the other hand, when the difference does not fall within a specific value range, it is judged as a defective product.

(2nd alignment correction step)

When the second determination unit 54 determines that it is defective, 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 section 133 and a method of adjusting the liquid crystal cell P by rotating it with respect to the conveying direction.

(Second step of storing defective products)

When the second determination unit 54 determines that the product is a good product, the good product liquid crystal cell P is transferred to the good product storage unit 83 and is stored in the good product storage unit 83 (second good product transfer step). On the other hand, when the second determination unit 54 determines that it is defective, as shown in FIG. 1, the defective liquid crystal cell P is branched from the fourth transfer unit 75 and the defective liquid crystal cell P is transferred to the defective product storage unit 84. Then, it is stored in the defective product storage portion 84.

In the first embodiment, each part 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 also configured by an information processing device and a dedicated circuit.

As another embodiment, the good-quality liquid crystal cell P may not be stored in the storage section 83 and may be transported to another inspection step. In addition, for the defective liquid crystal cell P, only the second optical film 21 may be peeled from the liquid crystal cell P, and a new second optical film may be bonded to the second surface P2.

(Embodiment 2)

In the second embodiment, the method of capturing an image is different from that in the first embodiment. As shown in FIG. 10, the first and second area sensor cameras 41 and 43 are in a state where the liquid crystal cell P and the first optical film 11 are sandwiched by the first and second rollers 34 a and 34 b. , Photograph the first and second corner portions A1 and A2 in front of the liquid crystal cell P being carried. Similarly, in a state where the third and fourth area sensor cameras 141 and 143 sandwich the liquid crystal cell P and the second optical film 21 behind 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 being transported are photographed.

According to this configuration, since the rear portion (for example, the rear end portion) of the panel is sandwiched by a pair of rollers, the two corner portions in front of the liquid crystal cell can be captured by the area sensor camera, so that inspection can be performed. The regional space is further space-saving. Moreover, as a conveyance part which conveys a liquid crystal cell, for example, two corner parts can be imaged suitably in the state which suppressed the vibration of the liquid crystal cell when using a conveyance roller, for example.

In addition, the second and fourth conveying sections 72 and 75 may be arranged in front of the area sensor camera with a roller arranged opposite to the conveying roller R, and before the liquid crystal cell P and the first optical film 11 are sandwiched. In the state of the square part, the two corner parts behind the liquid crystal cell are captured by the area sensor camera.

(Other embodiments)

In addition, in this embodiment, each cutting portion cuts a strip-shaped optical film and an adhesive in the width direction, and an optical film having a size corresponding to the liquid crystal cell P is formed on the carrier film (12, 22). (11, 21), but in order to avoid the disadvantages of the strip-shaped optical film, the strip-shaped optical film and the adhesive may be cut in the width direction.

Furthermore, although the optical film laminate roll (1) uses a configuration in which a ribbon-shaped optical film laminate (10) in which a ribbon-shaped optical film is laminated on an adhesive film on a carrier film (12) is wound, However, it is also possible to use a slit-shaped optical film in which a widthwise cutting line (10a) is formed on a strip-shaped optical film, and an optical film having a size corresponding to the liquid crystal cell P is arranged on the carrier film (12). Laminate rolls. When an optical film laminate roll with a cut is used, a cutting portion is not necessary.

In addition, in the first and second embodiments, all of the first and second optical films are bonded from the upper side of the liquid crystal cell, but it is not limited to this. Any one piece may be bonded from the upper side of the liquid crystal cell, the remaining one piece 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 is formed of, for example, a polarizer (having a thickness of about 1.5 to 80 μm) and a polarizer protective film (having a thickness of generally about 1 to 500 μm). The polarizer is provided on one or both sides of the polarizer with an adhesive or without an adhesive. Configure a polarizer protective film. Examples of other films constituting the optical film laminate 10 include retardation films (typically 10 to 200 μm in thickness) such as a λ / 4 plate and a λ / 2 plate, a vision compensation film, a brightness enhancement film, and a surface protection film. The thickness of the optical film laminate can be, for example, in a range of 10 μm to 500 μm. The adhesive agent interposed between the polarizing film and the carrier film is not particularly limited, and examples thereof include acrylic adhesives, silicone adhesives, and polyurethane adhesives. The layer thickness of the adhesive is, for example, preferably in a range of 10 μm to 50 μm. As the peeling force between the adhesive and the carrier film, for example, 0.15 (N / 50mm width sample) is exemplified, but it is not particularly limited thereto. The peeling force is measured based on JIS Z0237.

As the carrier film, a conventionally known film such as a plastic film (for example, a polyethylene terephthalate film, a polyolefin film, etc.) can be used. In addition, a conventionally appropriate film such as a film that has been coated with an appropriate release agent such as a silicone-based, long-chain alkyl-based, fluorine-based, or molybdenum sulfide can be used as necessary.

The optical display panel is attached to at least one side or both sides of the optical unit through an adhesive. The panel with the optical film is assembled, and the driving circuit is assembled as required. Examples of the optical unit include a liquid crystal unit and an organic EL unit. As the liquid crystal cell, any type of cell such as a vertical alignment (VA) type and a lateral electric field effect (IPS) type can be used. The organic EL unit may use any form of unit such as a top emission method, a bottom emission method, and a two-way emission method. The liquid crystal cell P shown in FIG. 1 has a structure in which a liquid crystal layer is sealed between a pair of substrates (first surface (visually visible side) P1, second surface (rear surface) P2) disposed opposite to each other.

Claims (14)

A manufacturing method of an optical display panel includes a first bonding step of releasing a strip-shaped first optical film laminate from a roll of the first optical film laminate, and moving the optical unit while moving the optical unit in the width direction. The first optical film obtained by cutting at least the first optical film in the band-shaped first optical film laminate is bonded to the first surface of the optical unit, and the first optical film laminate is provided with an adhesive layer. The first optical film of the adhesive and the first carrier film in the shape of a belt in which the first optical film is laminated via the adhesive; in the first photographing step, the optical unit is transported while being used in a direction orthogonal to the transport direction The first and second area sensor cameras arranged in the direction aligned with the widthwise end of the optical unit, and photographed the bonding position of the first optical film that is bonded to the first surface of the optical unit; FIG. 1 The image inspection step is to calculate the conveyance direction (y) and the direction orthogonal to the conveyance direction based on the images obtained by the first and second area sensor cameras in the first photographing step and performing image processing. (x) the end of the above optical unit The distance from the end of the first optical film (Dx1 ~ Dx4, Dy1 ~ Dy4); and the first determination step based on the distance (Dx1 ~ Dx4, Dy1) calculated in the first image inspection step ~ Dy4), judging the deviation of the fit; the above-mentioned first photographing step is: using the above-mentioned first and second area sensor cameras to photograph the first and second corners in front of the optical cell being transported, The first and second area sensor cameras are used to photograph the third and fourth corners of the rear end of the optical unit being transported; in the first bonding step, a pair of first and second rollers are used. The optical unit and the first optical film are held while being held out, thereby sending the first light. The learning film is bonded to the optical unit, and in the first photographing step, the optical unit and the front or rear portion of the first optical film are held by the first and second rollers. The first and second area sensor cameras capture the two corners of the front part or the rear part of the transported optical unit without being clamped. For example, the method for manufacturing an optical display panel according to claim 1, further comprising: a second bonding step, releasing the second optical film laminated body in the form of a tape from a roll of the second optical film laminated body, and transporting the optical unit, A second optical film obtained by cutting at least the second optical film in the strip-shaped second optical film laminate in a width direction is bonded to the second surface of the optical unit, wherein the second optical film The laminated body includes the second optical film having an adhesive, and a second carrier film in the shape of a belt in which the second optical film is laminated via the adhesive; in a second imaging step, the optical unit is transported while being used in the The third and fourth area sensor cameras arranged at the ends of the optical unit in the width direction in a direction orthogonal to the conveying direction and photographing the second optical film attached to the second surface of the optical unit Close position; the second image checking step, based on the images captured by the third and fourth area sensor cameras in the second shooting step above, image processing is performed to calculate the conveying direction (y) and the Transport direction orthogonal to (x) The distance between the end of the optical unit and the end of the second optical film (Dx5 to Dx8, Dy5 to Dy8); and a second determination step based on the distance calculated in the second image inspection step ( Dx5 ~ Dx8, Dy5 ~ Dy8) to determine the deviation of fit. For example, the method for manufacturing an optical display panel according to claim 2, wherein in the second shooting step, the third and fourth area sensor cameras are used to shoot the first and second corners of the optical unit to be transported, With the above 3rd, 4th The area sensor camera captures the third and fourth corners of the rear end of the optical unit being carried. For example, the manufacturing method of the optical display panel according to claim 2, wherein the first photographing step, the first image inspection step, and the first determination step are after the first bonding step and at the second bonding step. Before. For example, the method for manufacturing an optical display panel according to claim 3, wherein in the second bonding step, the pair of third and fourth rollers hold the optical unit and the second optical film while holding them, etc. Send out, thereby bonding the second optical film to the optical unit, and in the second photographing step, the optical unit and the second optical film are sandwiched by the third and fourth rollers, or In the state of the rear portion, the third and fourth area sensor cameras are used to capture the two corner portions of the front or rear portion of the transported optical unit without being clamped. For example, the method for manufacturing an optical display panel according to claim 1, wherein in the above-mentioned first image inspection step, when the cut end face of the first optical film is inclined, a line for maintaining the thickness of the film is Datum, calculate the distance. For example, the method for manufacturing an optical display panel according to claim 2, wherein in the second image inspection step, when the cut end face of the second optical film is inclined, a line for maintaining the thickness of the film is Datum, calculate the distance. An optical display panel manufacturing system includes: a first bonding section that releases a strip-shaped first optical film laminate from a roll of the first optical film laminate, and transports the optical unit while moving the optical unit The first optical film obtained by cutting at least the first optical film in the band-shaped first optical film laminate is bonded to the first surface of the optical unit, wherein the first optical film laminate is The body is provided with the first optical film having an adhesive, and a first carrier film in the shape of a belt in which the first optical film is laminated via the adhesive; and a first and a second area sensor camera, which are connected with The conveying direction is aligned with the widthwise end of the optical unit in a direction orthogonal to the conveying direction, and while the optical unit is being conveyed, the laminating position of the first optical film that is attached to the first surface of the optical unit is photographed, and the above The first and second area sensor cameras capture the widthwise ends; the first image inspection unit performs image processing based on the images captured by the first and second area sensor cameras. Calculate the distance (Dx1 ~ Dx4, Dy1 ~ Dy4) between the end of the optical unit and the end of the first optical film in the conveying direction (y) and the direction (x) orthogonal to the conveying direction; A first determination unit that determines a misalignment based on the distances (Dx1 to Dx4, Dy1 to Dy4) calculated by the first image inspection unit; and a first detection unit that is larger than the first and second regions. The sensor camera is positioned closer to the upstream side of the optical unit's conveyance; After a certain period of time has passed by the optical unit, the first and second area sensor cameras capture the first and second corner portions in front of the optical unit being transported; the optical unit is not detected by the first detection unit and After a certain period of time, the first and second area sensor cameras capture the third and fourth corners of the rear end of the optical unit being transported; the first bonding portion has a pair of first and second rollers, The first optical film and the first optical film are held by the first and second rollers while sending them out, thereby bonding the first optical film to the optical unit; the first and second area feeling The sensor camera is in a state where the front part or the rear part of the optical unit and the first optical film are held by the first and second rollers. Photograph the two corners of the front or rear part of the transported optical unit without being clamped. For example, the manufacturing system of the optical display panel according to claim 8, further comprising: a second bonding section that releases the strip-shaped second optical film laminate from the roll of the second optical film laminate, and conveys the optical unit, The second optical film obtained by cutting at least the second optical film in the strip-shaped second optical film laminate in the width direction is bonded to the second surface of the optical unit, wherein the second optical The film laminated body includes the second optical film having an adhesive, and a second carrier film in the shape of a belt in which the second optical film is laminated through the adhesive; and the third and fourth area sensor cameras are The optical unit is arranged at the end in the width direction of the optical unit in a direction orthogonal to the conveying direction. While the optical unit is being conveyed, the position of the second optical film that is attached to the second surface of the optical unit is captured. The third and fourth area sensor cameras capture the end in the width direction. The second image inspection unit performs an image based on the images obtained by the third and fourth area sensor cameras. Processing to calculate the transport direction (y) and the transport direction The distance (Dx5 ~ x8, Dy5 ~ y8) between the end of the optical unit and the end of the second optical diaphragm in the orthogonal direction (x); The distances (Dx5 ~ Dx8, Dy5 ~ Dy8) calculated by the image inspection unit determine the deviation of the fit. For example, the manufacturing system of the optical display panel according to claim 9, further comprising a second detection unit on the upstream side of the transport of the optical unit than the third and fourth area sensor cameras. After the optical unit being transported starts to pass a certain period of time, the first and second corners of the optical unit being transported are captured by the third and fourth area sensor cameras, After the second detection unit fails to detect that the optical unit has elapsed for a specific period of time, the third and fourth area sensor cameras capture the third and fourth corner portions of the rear end of the optical unit being transported. The manufacturing system of the optical display panel according to claim 9, wherein the imaging processing of the first and second area sensor cameras, the image processing of the first image inspection section, and the determination processing of the first determination section are It is performed after the bonding process of the said 1st bonding part, and before the bonding process of the said 2nd bonding part. The manufacturing system of the optical display panel according to claim 9, wherein the second bonding section has a pair of third and fourth rollers, and the third and fourth rollers sandwich the optical unit and the second optical film. The second optical film is adhered to the optical unit while the sheet is sent out, and the third and fourth area sensor cameras sandwich the optical unit and the third roller between the third and fourth rollers. In the state of the front part or the rear part of the second optical film, photograph the two corner parts of the front part or the rear part of the optical unit being transported without being clamped. For example, the manufacturing system of the optical display panel according to claim 8, wherein the first image inspection unit calculates the line maintaining the thickness of the film as a reference when the cut end surface of the first optical film is inclined. Out of the distance. For example, the manufacturing system of an optical display panel according to claim 9, wherein the second image inspection unit calculates the line maintaining the thickness of the film as a reference when the cut end surface of the second optical film is inclined. Out of the distance.