TWI704399B - Method and device for manufacturing laminated body of optical display device - Google Patents

Abstract

[Problem] 　　To provide a method and apparatus for manufacturing a laminate, in which optical film sheets corresponding to the sizes of the two sides of a rectangular liquid crystal panel are laminated on both sides of the liquid crystal panel with high-precision positioning. [Solution] 　　 The present invention is used to continuously support a first optical film sheet and a second optical film sheet having a width or length corresponding to the respective width or length on both sides of a rectangular liquid crystal panel. In the method of manufacturing the laminate of the optical display device in which the strip-shaped first carrier film and the second carrier film are peeled and bonded, only the length of the rectangular first and second optical film sheets is detected On the two sides of the side, based on the position information of the two ends, the optical film sheet aligns each of the two sides of the corresponding liquid crystal panel, and aligns the first carrier film and the second carrier film on the optical film sheet. And the optical film sheet, and the second optical film sheet was peeled off and bonded to both sides of the liquid crystal panel.

Description

Method and device for manufacturing laminated body of optical display device

The present invention relates to a method and apparatus for manufacturing a laminated body for an optical display device. It is an optical film sheet with polarizing films corresponding to the size of the two sides of a rectangular liquid crystal panel, and the absorption axis is orthogonally polarized The relationship between the two sides of the LCD panel.

In the manufacture of optical display devices, the method of manufacturing the roller to panel (Roll•To•Panel (RTP)) is known as described in Patent Document 1. For example, in the RTP method of manufacturing a liquid crystal optical display device, generally, the optical display device is manufactured in the following manner.

This is shown in Figure 2. First, on the first carrier film contained in the belt-shaped first optical film laminate sent from R1, the width or length corresponding to the width or length of one side of the rectangular liquid crystal panel The first optical film sheet, which is continuously supported so that its long side faces the width direction of the first carrier film, is bonded to the aforementioned one surface of the liquid crystal panel, and is contained in the strip-shaped second optical film layer sent from R2 On the second carrier film in the integration, a second optical film sheet whose width or length corresponds to the width or length of the other side of the liquid crystal panel is continuously supported so that the long side faces the longitudinal direction of the second carrier film , Bonded to the aforementioned other of the aforementioned liquid crystal panel surface.

Thereby, the first and second optical film sheets are peeled off from the first and second carrier films, respectively, and are laminated on both sides of the liquid crystal panel in a mutually orthogonal polarization relationship, thereby combining the optical Continuous manufacturing of display devices.

The technical problem necessary at this time is the high-precision positioning between the optical film sheet and the liquid crystal panel. This is for the optical film sheet peeled from the tape-shaped carrier film and sent to the bonding position, and one side or the other side of the rectangular liquid crystal panel that is simultaneously conveyed to the bonding position is accurately positioned and laminated.

Therefore, in the production of this RTP method, as shown in Patent Document 2, the optical film sheet continuously supported on the carrier film is peeled from the carrier film and sent to the bonding position, and the peeled optical film When the film sheet is bonded to one side or the other side of the liquid crystal panel that is simultaneously conveyed to the bonding position, one or the other side of the liquid crystal panel is accurately positioned relative to the optical film sheet.

In the manufacturing of the RTP method, a peeling mechanism that peels the optical film sheet continuously supported on the carrier film from the carrier film and the adhesive layer in the vicinity of the bonding position is arranged. The peeling mechanism is preferably a peeling mechanism composed of a slightly wedge-shaped peeling body having a top facing the bonding position.

The optical film sheet is conveyed by folding the carrier film on the top of the slightly wedge-shaped release body and the conveying direction toward the optical film sheet in the opposite direction, and the carrier film and the adhesive layer Peel off and face the bonding position. The optical film sheet that has reached the bonding position is bonded to the corresponding bonding surface of the liquid crystal panel that is adjusted to the bonding position in synchronization with the bonding position.

On the other hand, in recent years, in the manufacture of optical display devices, miniaturization, thinning, and weight reduction have progressed. At the same time, the narrowing of the frame surrounding the liquid crystal display area, that is, the narrowing of the frame, has also proceeded. In the manufacturing process that shortens the working hours and reduces the trouble, the requirements for the correct positioning of the optical film sheet of the liquid crystal panel are even higher.

In Patent Document 2, it is disclosed that the rectangular panel is provided with the center line of the conveying direction of the rectangular panel conveyed to the bonding position, and the rectangular panel is angled so as to be parallel to the center line of the optical film sheet also conveyed to the bonding position. Adjusted edge detection device, and straight-forward position detection device that detects the tip position of the optical film sheet at the bonding station. After the angle is adjusted, only the deviation of the parallel position relationship is moved in parallel to adjust the position .

In Patent Document 3, it is disclosed that before the optical film sheet that is attached to the panel member at the predetermined attachment position reaches the predetermined attachment position together with the panel member, the front-end detection mechanism reads in advance the tape-shaped carrier film by the adhesion The tip of the optical film sheet supported by the layer is aligned with the attachment start position with the panel member, peeled from the carrier film and attached to the panel member at the same time.

In Patent Document 4, it is disclosed that the end surface of the substrate conveyed to the bonding position on the advancing direction side is parallel to the cut surface of the film sheet peeled from the release film and bonded to the corresponding position of the substrate. Machine Structure.

Patent Document 5 discloses a device for reading the corners of the retardation film by interlocking the panel suction and conveying mechanism with the retardation film attaching mechanism, equipped with an image recognition camera, and stopping the operation of the retardation film corner detection mechanism.

In addition, Patent Document 6 discloses a first optical film laminate including a first optical film sheet having a width corresponding to the long side of a rectangular substrate and a length corresponding to the short side, and a first optical film laminate including a long substrate having a corresponding rectangular substrate. A method in which the second optical film laminates of the second optical film sheet corresponding to the width of the side and the length of the short side are sequentially sent out and bonded to both sides of one side and the other side of a rectangular substrate.

In any case, the inventors conducted a review. In the manufacturing of the RTP method, by shortening the man-hours and reducing the trouble, the manufacturing speed of the optical display device is maintained, and the liquid crystal panel and optical The present invention of the accurate positioning process obtained in the bonding of the film sheet.

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] Patent No. 4377964

[Patent Document 2] Patent No. 4644755

[Patent Document 3] Patent No. 5458212

[Patent Document 4] JP 2005-037416 A

[Patent Document 5] JP 2003-107246 A

[Patent Document 6] Patent No. 5616494

The problem is that in a rectangular liquid crystal panel, from a tape-shaped carrier film supporting an optical film sheet with a width or length corresponding to the width or length of the optical film sheet, the optical film sheet is peeled and bonded, thereby manufacturing the lamination of the optical display device. In the integrated method, while maintaining the working hours, it is possible to align the bonding surface of the liquid crystal panel to the optical film sheet with higher accuracy.

Therefore, as shown in Patent Document 3, it is necessary to read the position of the tip of the optical film sheet with an imaging device such as a camera, and to specify the correct position of the laminated liquid crystal panel based on the position information. At this time, it is desirable to avoid reading the positions of all the four corners of the rectangular optical film sheet, and the alignment of the liquid crystal panel based on them becomes complicated.

In order to simplify the lamination of the complicated liquid crystal panel to the optical film sheet, the present invention has been completed by continuously reviewing whether the positions of the four corners of the optical film sheet can be aligned between the two or three corners.

The above-mentioned problem is based on the first and second optical film sheets whose width or length corresponds to the respective width or length on both sides of a rectangular liquid crystal panel, from the first and second carriers in the form of a strip that continuously support them. In the method of manufacturing the laminate of the optical display device in which the film is peeled and bonded, only the positions of both ends of the long sides of the first and second rectangular optical film sheets are detected. Based on the position information of the two ends, the optical film sheet is positioned on the bonding surface of the respective corresponding liquid crystal panel, and the first and second optical film sheets are peeled from the first and second carrier films, and the liquid crystal The two sides of the panel are laminated sequentially or simultaneously to solve the problem.

An embodiment of the present invention provides a method for manufacturing the laminated body 6 of an optical display device. As shown in the schematic plan view of FIG. 2 and the schematic view of FIG. 3 when viewed from the side, it is a method of manufacturing a laminate 6 of an optical display device. The width or length corresponds to the width or the width of one side 50 of the rectangular liquid crystal panel 5 The length of the first optical film sheet 10 corresponding to the size of one side 50 of the liquid crystal panel 5 is continuously supported so that the long side y10 faces the width direction of the first carrier film 30 on the strip-shaped first carrier film 30, from The first carrier film 30 is peeled off and bonded to one side 50 of the liquid crystal panel 5, and the width or length corresponding to the width or length of the other side 51 of the liquid crystal panel 5 is oriented on the strip-shaped second carrier film 31 with the long side y11 The second optical film sheet 11 corresponding to the size of the other side 51 of the liquid crystal panel 5, which is continuously supported in the longitudinal direction of the second carrier film 31, is peeled from the second carrier film 31 and bonded to the other side of the liquid crystal panel 5. One side 51.

As shown in FIG. 4, it may further include: when the front end or rear end 101 of the first optical film sheet 10 reaches the predetermined first detection position 70, stopping the transport of the first carrier film 30 to detect It corresponds to the process of one end 102 and the other 103 at both ends of the long side y10 of the first optical film sheet 10 or the rear end 101 in the width direction; The position information 200 formed by the other end 103 is the process of aligning one side 50 of the liquid crystal panel 5 with the first optical film sheet 10; A process in which the first optical film sheet 10 is peeled from the first carrier film 30 and bonded to one surface 50 of the liquid crystal panel 5. 4 is a first sticker including a device 104 that reads one end 102 and the other end 103 corresponding to both ends of the long side y10 of the first optical film sheet 10 in the width direction with an imaging device such as a camera An enlarged schematic view of the station 120.

As shown in FIG. 5, it may further include: when the front end or rear end 111 of the second optical film sheet 11 reaches the predetermined second detection position 71, stopping the conveyance of the second carrier film 31 to detect The process corresponding to the two end positions of either the front end 112 or the rear end 113 of the long side y11 of the second optical film sheet 11; The position information 210 constituted by the rear end 113 is a process of aligning the other side 51 of the liquid crystal panel 5 with the second optical film sheet 11; the second optical film sheet 11 is peeled from the second carrier film 31 and bonded to The other side 51 of the LCD panel 5 works. FIG. 5 is a first including a device 114 that reads the positions of either the front end 112 and the rear end 113 of the side end 111 corresponding to the long side y11 of the second optical film sheet 11 with an imaging device such as a camera An enlarged schematic view of the bonding station 220.

In the method of the present invention, the first optical film sheet 10 is formed of a first polarizing film, and the second optical film sheet 11 is formed of a second polarizing film. In addition, one side 50 of the liquid crystal panel 5 can be used as the TFT side The other surface 51 of the liquid crystal panel 5 is the CF side surface.

Similarly, in the method of the present invention, the process of detecting one end 102 and the other end 103 of the two ends in the width direction of the first optical film sheet 10 may further include: calculating the deviation angle between the one end 102 and the other end 103 The process of degree θ1; the process of detecting the front end 112 and the rear end 113 at either end of the side end 111 of the second optical film sheet 11 may further include: calculating the distance between the rear end 113 and the front end 112 Engineering of deviation angle θ2.

Similarly, in the method of the present invention, the process of aligning one side 50 of the liquid crystal panel 5 with the first optical film sheet 10 based on the calculation of the deviation angle θ1 between the positions of the both ends in the width direction of the first optical film sheet 10 , It is possible to position one side 50 of the liquid crystal panel 5 on the first optical film sheet 10 based on the deviation angle θ1; on the other hand, according to the deviation of the two end positions of any one of the side ends 111 of the second optical film sheet 11 In the calculation of the angle θ2, the process of aligning the other surface 51 of the liquid crystal panel 5 with the second optical film sheet 11 can position the other surface 51 of the liquid crystal panel 5 on the second optical film sheet 11 based on the deviation angle θ2.

Similarly, in the method of the present invention, as shown in FIGS. 4 and 5, the method may further include: folding and transporting the first carrier film 30 on the top 601 of the first peeling body 60, and at the same time removing the first optical film sheet 10 from The process of peeling the first carrier film 30; the process of folding back the second carrier film 31 on the top 611 of the second peeling body 61 while peeling the second optical film sheet 11 from the second carrier film 31; removing the first optical film The process of peeling the film sheet 10 from the first carrier film 30 and bonding it to one side 50 of the liquid crystal panel 5 includes: restarting the conveyance of the first carrier film 30 that has stopped conveying, thereby removing the first optical film sheet 10 The process of peeling off the first carrier film 30 and bonding to one side 50 of the liquid crystal panel 5; the process of peeling off the second optical film sheet 11 from the second carrier film 31 and bonding to the other side 51 of the liquid crystal panel 5, Contains: restarting the transportation of the second carrier film 31 that has been stopped, and removing the second optical film sheet 11 The process of peeling off the second carrier film 31 and bonding to the other surface 51 of the liquid crystal panel 5.

In another embodiment of the present invention, an apparatus for manufacturing the laminate 6 of an optical display device is provided. Specifically, as shown in the schematic plan view of FIG. 2 and the schematic view of FIG. 3 when viewed from the side, it is an apparatus for manufacturing a laminate 6 of an optical display device, and the width or length corresponds to one side 50 of the rectangular liquid crystal panel 5. A first optical film sheet corresponding to the size of one side 50 of the liquid crystal panel 5 that is continuously supported on the strip-shaped first carrier film 30 with the long side y10 facing the width direction of the first carrier film 30 10. Peel off from the first carrier film 30 and bond it to one side 50 of the liquid crystal panel 5, and make the width or length corresponding to the width or length of the other side 51 of the liquid crystal panel 5 on the strip-shaped second carrier film 31. The second optical film sheet 11 corresponding to the size of the other side 51 of the liquid crystal panel 5, which is continuously supported so that the side y11 faces the longitudinal direction of the second carrier film 31, is peeled from the second carrier film 31 and bonded to the liquid crystal panel The other side of 5 51.

As shown in FIG. 4, it includes: when the front end or rear end 101 of the first optical film sheet 10 reaches the predetermined first detection position 70, the transport of the first carrier film 30 is stopped, and the detection is equivalent to The first detection mechanism 701 at one end 102 of the long side y10 of the long side y10 or the rear end 101 in the width direction of the first optical film sheet 10 and the second detection mechanism at the other end 103 that detects both ends Out mechanism 702; a first alignment mechanism 80 that aligns one side 50 of the liquid crystal panel 5 with the first optical film sheet 10 based on the position information 200 composed of one end 102 and the other end 103 at both ends in the width direction ; The first optical film sheet 10 is peeled from the first carrier film 30 and bonded to the liquid crystal panel 5 The device 1 of the first bonding mechanism 90 on one side 50. 4 is a first sticker including a device 104 that reads one end 102 and the other end 103 corresponding to both ends of the long side y10 of the first optical film sheet 10 in the width direction with an imaging device such as a camera An enlarged schematic view of the station 120.

As shown in FIG. 5, it includes: when the front end portion 111 of the second optical film sheet 11 reaches the predetermined second detection position 71, the conveyance of the second carrier film 31 is stopped, and the detection is equivalent to the second optical film The third detection mechanism 711 at the front end 112 and the fourth detection mechanism 712 at the rear end 113 at the both ends of the long side y11 of the sheet 11 are based on The position information 210 constituted by the front end 112 and the rear end 113 of the two ends of the side end 111, the second alignment mechanism 81 that aligns the other surface 51 of the liquid crystal panel 5 with the second optical film sheet 11; 2A device in which the optical film sheet 11 is peeled from the second carrier film 31 and bonded to the second bonding mechanism 91 of the other surface 51 of the liquid crystal panel 5. FIG. 5 is a second device 114 including a device 114 that reads the positions of both ends of the front end 112 and the rear end 113 corresponding to the side end 111 of the long side y11 of the second optical film sheet 11 with an imaging device such as a camera An enlarged schematic view of the bonding station 220.

In the device of the present invention, the first optical film sheet 10 is formed of a first polarizing film, and the second optical film sheet 11 is formed of a second polarizing film. In addition, one surface 50 of the liquid crystal panel 5 can be used as the TFT side The other surface 50 of the liquid crystal panel 5 is the CF side surface.

Similarly, in the device of the present invention, the first detection mechanism 701 and the second detection mechanism 702 that detect the positions of both ends of the first optical film sheet 10 in the width direction may further include: 102 and another The first calculation mechanism 703 for the deviation angle θ1 between the ends 103; the third detection mechanism 711 for detecting the front end 112 and the rear end 113 of either of the side ends 111 of the second optical film sheet 11 And the fourth detection mechanism 712 may further include a second calculation mechanism 713 that calculates the deviation angle θ2 between the rear end 113 and the front end 112.

Similarly, in the device of the present invention, the first alignment mechanism 80 calculates the deviation angle θ1 of the position of both ends in the width direction of the first optical film sheet 10, and can make one side 50 of the liquid crystal panel 5 based on the deviation angle θ1. Positioned at the first optical film sheet 10; on the other hand, the second alignment mechanism 81 can be calculated based on the deviation angle θ2 between the two end positions of any one of the side ends 111 of the second optical film sheet 11 Based on the deviation angle θ2, the other surface 51 of the liquid crystal panel 5 is positioned on the second optical film sheet 11.

The device of the present invention can further include: a first slightly wedge-shaped first carrier film 30 having a first top 601 that is folded back and transported on the first top 601 while peeling the first optical film sheet 10 from the first carrier film 30 Peeling body 60; a second slightly wedge-shaped peeling body with a second top 611 that folds the second carrier film 31 back on the second top 611 while peeling the second optical film sheet 11 from the second carrier film 31 61; The first bonding mechanism 90 that peels off the first optical film sheet 10 from the first carrier film 30 and bonds it to one side 50 of the liquid crystal panel 5, and restarts the transportation of the first carrier film 30 that has stopped transportation, by This peels off the first optical film sheet 10 from the first carrier film 30 while bonding it to one side 50 of the liquid crystal panel 5; in addition, peels off the second optical film sheet 11 from the second carrier film 31 and bonds it to the liquid crystal panel The second laminating mechanism 91 on the other side 51 of 5 restarts the transportation of the second carrier film 31 that has stopped transportation, and removes the second The optical film sheet 11 is peeled from the second carrier film 31 and bonded to the other surface 51 of the liquid crystal panel 5 at the same time.

R1: The first optical film laminate

R2: Second optical film laminate

10: The first optical film sheet

y10: The long side in the width direction constituting the tip of the first optical film sheet

1010: The tip of the first optical film sheet

102: One end in the width direction of the first optical film sheet

103: The other end in the width direction of the first optical film sheet

104: Position information of both ends in the width direction of the first optical film sheet

11: The second optical film sheet

y11: The long side in the longitudinal direction that constitutes the tip of the second optical film sheet

1110: The tip of the second optical film sheet

111: Side end that constitutes the front end of the second optical film sheet

112: The front end of the side end in the longitudinal direction constituting the second optical film sheet

113: The rear end of the side end in the longitudinal direction constituting the second optical film sheet

114: Position information of both ends of the second optical film sheet in the longitudinal direction

30: The first carrier film

31: The second carrier film

5: LCD panel

6: Layered body

50: One side of the LCD panel (TFT side)

51: The other side of the LCD panel (CF side)

60: The first peeling mechanism

601: Top 1

61: The second peeling mechanism

611: Top 2

70: The first detection position

701: The first detection mechanism or the first camera

702: The second detection mechanism or the second camera

70: 2nd detection position

711: The third detection mechanism or the third camera

712: The fourth detection mechanism or the fourth camera

80: No. 1 counterpoint organization

81: The second counterpoint organization

90: No. 1 fitting mechanism

91: The second bonding mechanism

100: The first bonding position

110: The first manufacturing line

120: The first bonding station

200: The second bonding position

210: The second manufacturing line

220: The second bonding station

[Figure 1] (a) and (b) show that the first and second carrier films in the form of a strip having the width of the alignment mark corresponding to the long side or the short side of the liquid crystal panel include an adhesive layer and a plurality of first and The plan view and side view of an example of the first and second optical film laminates of the second optical film sheet, (c) shows a liquid crystal panel in which the first and second optical film sheets corresponding to both sides of the liquid crystal panel are bonded The floor plan and side view.

[Figure 2] It shows that the first optical film sheet is peeled off from the first carrier film of the first optical film laminate sent from one side and bonded to one side of the liquid crystal panel transported from the other side, and then on one side The liquid crystal panel on which the first optical film sheet is attached is rotated by 90°, and on the other side of the inverted liquid crystal panel, the second carrier film of the second optical film laminate sent from the other side is the second optical film sheet A schematic plan view of an example of an apparatus in which the first production line and the second production line are juxtaposed by the RTP method in which the materials are peeled and bonded to produce a laminate of an optical display device.

[Figure 3] Viewed from the side of Figure 2, the first or second optical film sheet is laminated on one side or the other side of the liquid crystal panel, respectively. A schematic diagram of an example of the device of the second manufacturing line and the line.

[Figure 4] The structure shown in Figure 3 is based on the length of the first optical film sheet The position information of both ends in the width direction of the rear end of the first optical film sheet conveyed in the width direction. The first optical film sheet is bonded to one side of the liquid crystal panel. The optical display is manufactured by the RTP method. An enlarged schematic view of the first bonding station including the first peeling mechanism, the first positioning mechanism, and the first bonding mechanism of the first production line of the laminated body of the device.

[Fig. 5] Both ends of the long side of the side end of any one of the side ends of the second optical film sheet based on the short side of the second optical film sheet conveyed in the width direction as shown in Fig. 3 Position information The second production line of the laminated body of the optical display device manufactured by the RTP method by bonding the second optical film sheet to the other side of the liquid crystal panel, including the second peeling mechanism and the second positioning mechanism and An enlarged schematic view of the second bonding station of the second bonding mechanism.

[6] Information Comparative Examples and Comparative Example C _p value as measured by the manufacturing process 10 times obtained in the engineering capability index defined evaluated.

This is based on the comparison between FIGS. 4 and 5, and is based on the structure consisting of one end and the other end at both ends of the long side in the width direction of the first optical film sheet bonded to one or the other surface of the liquid crystal panel. Position information, and position information constituted by the front and rear ends of the both ends of the long side of any one of the side ends of the second optical film sheet is bonded to both sides of the liquid crystal panel. The first embodiment The adhesion accuracy of the second optical film sheet and the second optical film sheet are similarly based on the position of one end and the other end of the first optical film sheet bonded to one side or the other side of the liquid crystal panel. The position information of the composition and the position information composed of one end and the other end of the two ends of the short side in the width direction of the second optical film sheet are bonded to the liquid crystal surface Data on the adhesion accuracy of the first and second optical film sheets of the comparative example on both sides of the board.

[Fig. 7] A schematic diagram showing the measurement method of Example (a) and Comparative Example (b) shown in Fig. 6.

Fig. 8 shows the first optical film sheet conveyed in a state where the long side in the width direction constituting the first optical film sheet deviates by only θ1 from the horizontal reference position in the width direction, and the second optical film sheet A schematic view of the second optical film sheet conveyed in a state where the long side of any one of the side ends is deviated by θ2 from the vertical reference position in the longitudinal direction.

[FIG. 9] The structure shown in FIG. 4, the rear end portion of the first optical film sheet is transported in the width direction by the long side of the first optical film sheet, instead of the front end portion of the first optical film sheet , An enlarged schematic view of the first bonding station of the first manufacturing line of the first manufacturing line of the laminated body of the optical display device manufactured by the RTP method based on the position information of the positions of both ends in the width direction.

Initially, the engineering capability index C _p value of the example and comparative example data of FIG. 6 showing the characteristics of the present invention will be explained. Engineering capability index C _p value of the field in the management of quality of industrial products, works as the ability of a quantitative evaluation of engineering and a conventional index value. It is usually defined by the following formula.

C _p =(USL-LSL)/(6×δ)

Among them, USL is the upper specification value, LSL is the lower specification value, and +δ is the estimated value of the parent standard deviation. These values are the characteristic values in the parent group as the normal The assumed value of the distribution.

The value of the engineering capability index C _p is usually expected to be defined by the ability to show that it has a larger number, and a value near 0 indicates that the deviation is too large and cannot be a quality control object as a product. Preferably, C _p >1.33. When C _p >1.67, the recognition standard is reached, so it is better. When C _p <1.33, the product group manufactured cannot be evaluated to meet the standard criteria, because it does not meet the original target quality, it becomes the one that does not meet the product shipping criteria.

The present invention is a manufacturing method and device that shortens the man-hours of the manufacturing process, and realizes the application accuracy of the quantitative evaluation of the quality management.

The method and apparatus for manufacturing the laminated body 6 of the optical display device of the present invention are as follows. Fig. 1 (a) and (b) show that each of the first optical film sheet 10 and the second optical film sheet 11 in which polarizing films are laminated on one side 50 and the other side 51 of a rectangular liquid crystal panel 5 A plan view and a side view of an example of the first optical film laminate R1 and the second optical film laminate R2 laminated on the carrier film 30 and the second carrier film 31 by the adhesive layer 3. 1(c) is a plan view and side view of the liquid crystal panel 5 in which the first optical film sheet 10 and the second optical film sheet 11 are bonded on both sides of a rectangular liquid crystal panel 5 in a cross polarization relationship view.

As shown in FIGS. 2 and 3, in the first manufacturing line 110, the first optical film laminate R1 is sent out from one side, and the rectangular liquid crystal panel 5 is transported with the long side A as the front end surface from the other side. As shown in Fig. 1(a), the first optical film whose width or length corresponds to the width or length of one side 50 of the liquid crystal panel 5 on the strip-shaped first carrier film 30 constituting the first optical film laminate R1 sent out The film sheet 10 is continuously supported so that the long side y10 faces the width direction of the first carrier film 30 or the short side x10 faces the long side direction of the first carrier film 30.

The first optical film sheet 10 is peeled from the first carrier film 30 by turning the first carrier film 30 back and forth on the first top portion 601 of the first slightly wedge-shaped peeling body 60 in the first bonding station 120 And sent to the first bonding position 100. The liquid crystal panel 5 is transported from the other side of the first manufacturing line 110 to the first bonding position 100 with the long side A as the front end.

The liquid crystal panel 5 is transported at the first bonding position 100 with the long side A as the front end surface by the first positioning mechanism 80 constituted by, for example, a suction transport device. On the other hand, at the first detection position 70, the inspection The two end positions of the rear end 101 constituting the long side y10 in the width direction of the first optical film sheet 10, namely one end 102 and the other end 103, are confirmed to have a deviation of θ1 from the horizontal reference position set in the imaging device described later At this time, the deviation amount θ1 is added and the posture control of the liquid crystal panel 5 is performed, whereby the one surface 50 of the liquid crystal panel 5 and the first optical film sheet 10 are aligned with high precision and are bonded by the first bonding mechanism 90.

In the second manufacturing line 210 shown in FIGS. 2 and 3, the second optical film laminate R2 is sent out from one side, and the rectangular liquid crystal panel 5 is transported with the short side B as the front end surface from the other side. As shown in Fig. 1(b), on the second carrier film 31 in the form of a strip that constitutes the second optical film laminate R2 that is sent out, the width or length corresponds to the second width or length of the other side 51 of the liquid crystal panel 5. The optical film sheet 11 has the long side y11 facing the width direction of the second carrier film 31, or the short side x11 facing the width direction of the first carrier film 30 The way is continuously supported.

The second optical film sheet 11 is peeled from the second carrier film 31 by turning the second carrier film 31 back on the second top portion 611 of the second slightly wedge-shaped peeling body 61 at the second bonding station 220. Send to the second bonding position 200. From the other side of the second manufacturing line 210, the liquid crystal panel 5 with the first optical film sheet 10 bonded to one side 50 of the liquid crystal panel 5 is rotated 90° and inverted, and the liquid crystal panel 5 faces the first with the short side B as the front end. 2Lamination position 200 transport.

The liquid crystal panel 5 is transported at the second bonding position 200 with the long side B as the front end surface by the second positioning mechanism 81 constituted by, for example, a suction transport device. On the other hand, at the second detection position 71, inspection When the two ends of the long side y11 constituting the side end surface of the second optical film sheet 11, that is, the front end 112 and the rear end 113, are confirmed to have a deviation of θ2 from the horizontal reference position set in the imaging device described later , The deviation θ2 is added to control the posture of the liquid crystal panel 5, whereby the other surface 51 of the liquid crystal panel 5 and the second optical film sheet 11 are aligned with high accuracy, and the second bonding mechanism 91 is used for bonding.

The technical problem of the present invention is how to reduce the stoppage of the manufacturing line due to failures, how to achieve high-precision bonding without reducing the manufacturing speed in the method and manufacturing of the laminate 6 of the optical display device. Various proposals for peeling off the optical film sheet supported on the carrier film constituting the optical film laminate from the carrier film while correctly positioning and bonding it to a rectangular member such as a liquid crystal panel are described in Patent Documents 1 to 3, for example. In the following, the technical features of the present invention will be explained while comparing with the technology proposed so far.

As shown in FIGS. 2 and 3, the method of the present invention includes: in the first manufacturing line 110, when the front end portion 1010 of the first optical film sheet 10 reaches the predetermined first detection position 70, stopping the first carrier The process of transporting the film 30 to detect the positions of the two ends of the long side y10 in the width direction of the leading end portion 1010 of the first optical film sheet 10, namely one end 102 and the other end 103; based on the detected position information 104 in the width direction , The process of aligning one side 50 of the liquid crystal panel 5 with the first optical film sheet 10 by the first alignment mechanism 80; the first optical film sheet 10 is removed from the first carrier film 30 by the first peeling mechanism 60 The process of peeling and bonding to one side 50 of the liquid crystal panel 5 by the first bonding mechanism 90.

In the first manufacturing line 110, when the tip portion 1010 of the first optical film sheet 10 reaches the predetermined first detection position 70, as shown in FIG. 8(a), it is confirmed that the width direction of the tip portion 1010 is relative to When the horizontal reference position set by the first detection mechanism 701 and the second detection mechanism 702 has a deviation of θ1, the liquid crystal panel 5 can add the deviation θ1 to perform posture control.

The method of the present invention further includes: in the second production line 210, the liquid crystal panel 5 on which the first optical film sheet 10 is bonded to the side 50 formed on the first production line 110 is rotated by 90° and reversed. The side B faces the other side 51 of the liquid crystal panel 5 conveyed at the second bonding position 200 as the front end. When the front end 1110 of the second optical film sheet 11 reaches the predetermined second detection position 71, the second carrier film 31 is stopped. The process of detecting the two ends of the long side y11 that constitutes the front end 112 and the rear end 113 of any one of the side ends 111 in the longitudinal direction of the second optical film sheet 11; based on the detected long sides Direction position information 114, the other side 51 of the liquid crystal panel 5 is moved by the second alignment mechanism 81 The process of aligning with the second optical film sheet 11; the second optical film sheet 11 is peeled from the second carrier film 31 by the second peeling mechanism 61, and is bonded to the liquid crystal panel by the second bonding mechanism 91 The other side of 5 is the project of 51.

In the second manufacturing line 210, when the front end portion 1110 of the second optical film sheet 11 reaches the predetermined second detection position 71, as shown in FIG. 8(b), the length direction of the front end portion 1110 is confirmed When there is a deviation of θ2 from the vertical reference position set by the third detection mechanism 711 and the fourth detection mechanism 712, the liquid crystal panel 5 can add the deviation θ2 to perform posture control.

The device of the present invention includes: when the front end portion 101 of the first optical film sheet 10 reaches the predetermined first detection position 70, the conveyance of the first carrier film 30 is stopped, and the front end constituting the first optical film sheet 10 is detected The first detection mechanism 701 of one end 102 of the two ends of the long side y10 in the width direction of the section 101 and the second detection mechanism 702 of the other end 103; based on the position information 104 of both ends in the width direction, the liquid crystal panel The first alignment mechanism 80 that aligns one side 50 of 5 with the first optical film sheet 10; the first peeling mechanism 60 that peels the first optical film sheet 10 from the first carrier film 30; the first optical film that peels off The film sheet 10 is bonded to the first bonding mechanism 90 of the one surface 50 of the liquid crystal panel 5.

The device of the present invention includes: when the front end portion 1110 of the second optical film sheet 11 reaches the predetermined second detection position 71, the conveyance of the second carrier film 31 is stopped, and the length of the second optical film sheet 11 is detected. The third detection mechanism 711 of the front end 112 and the fourth detection mechanism 712 of the detection rear end 113 at one end of the long side y11 of the side end 111 in the side direction; based on the positions of both ends of the side end 111 Information 114, the second alignment mechanism 81 that aligns the other side 51 of the liquid crystal panel 5 with the second optical film sheet 11; the second optical film sheet A second peeling mechanism 61 that peels the material 11 from the second carrier film 31; a second bonding mechanism 91 that bonds the peeled second optical film sheet 11 to the other surface 51 of the liquid crystal panel 5.

A pair of strip-shaped optical film laminates R1 and R2 installed in the method and apparatus of the present invention, as shown in Figure 1 (a) and (b), have a long side A or a corresponding rectangular liquid crystal panel 5 The width of the short side B. In the first conveying line 110, the liquid crystal panel 5 is conveyed toward the first bonding position 100 with the long side A as the front end surface. Therefore, the first optical film sheet 10 bonded to one side 50 of the liquid crystal panel 5 has a long side y10 corresponding to the alignment mark of the long side A of the liquid crystal panel 5, and is on the first carrier film 30 with a width The directional method is continuously supported, peeled from the first carrier film 30, and sent to the first bonding position 100 at the same time. At this time, one end 102 and the other end 103 in the width direction of the front end surface of the peeled first optical film sheet 10 are set in relation to two detection mechanisms composed of, for example, a CCD camera. Specifically, The deviation angle θ1 from the horizontal reference position set in the first imaging device 701 and the second imaging device 702 is calculated as position data in the width direction, and the conveyed liquid crystal panel 5 controls the posture so as to correct the deviation angle θ1.

On the other hand, in the second conveying line 210, the liquid crystal panel 5 is conveyed toward the second bonding position 200 with the short side B as the front end surface. Therefore, the second optical film sheet 11 bonded to the other side 51 of the liquid crystal panel 5 has a long side y11 corresponding to the alignment mark of the long side A of the liquid crystal panel 5, and faces the second carrier film 31 The method in the longitudinal direction is continuously supported, peeled from the second carrier film 31, and is sent to the second bonding position 200 at the same time. At this time, in order to calculate the adhesion accuracy of the first transport line 110 in the same way, the second The front end 112 and the rear end 113 of the long side y11 of the side end 111 of any one of the front end 1110 of the optical film sheet 11 are set in comparison with two detection mechanisms composed of, for example, a CCD camera. In other words, the deviation angle θ2 from the vertical reference position set in the third imaging device 711 and the fourth imaging device 712 is calculated as the position data in the longitudinal direction, and the conveyed liquid crystal panel 5 controls the posture to correct the deviation angle θ2.

In this way, in the present invention, the bonding of the first and second optical film sheets on both sides of the liquid crystal panel 5 will correspond to the long side A or the short side of the liquid crystal panel before bonding to both sides of the liquid crystal panel 5. The first optical film sheet 10 and the second optical film sheet 11 of the first optical film sheet 10 and the second optical film sheet 11 with different widths have long sides y10 and y11 in the width direction and the long side direction. The deviation angle θ1 relative to the horizontal reference position is calculated on the other side, and the deviation angle θ2 relative to the vertical reference position is calculated on the other side. Based on this, the posture of the liquid crystal panel 5 is controlled, thereby achieving high adhesion precision bonding on both sides of the liquid crystal panel 5 .

The characteristics of the present invention, as shown in FIG. 7, from the detection of the long side y10 constituting the front end portion 1010 of the first optical film sheet 10 and the long side y11 constituting the front end portion 1110 of the second optical film sheet 11 Example (a), similar to the comparative example in which the long side y10 constituting the front end portion 1010 of the first optical film sheet 10 and only the short side x11 constituting the front end portion 1110 of the second optical film sheet 11 were detected (b) The data on the C _p value of the engineering capability index for comparison becomes clear.

As shown in the table of Fig. 6, the method and apparatus for manufacturing a laminate of a conventional optical display device by the RTP method in which only the leading end positions are detected and aligned are all based on the method of Comparative Example (b) . From the data of the example shown in Fig. 6, it is C _p when aligning one side 50 of the liquid crystal panel 5 to the long side y10 in the width direction constituting the first optical film sheet 10 and bonding, and when bonding starts At the end of the closing, C _p >1.67, and C _p >1.33 on the drive side and operation side. In contrast, the other side of the liquid crystal panel 515 when the bit of the second configuration to the short width direction of the optical film sheet 11 and the side of bonding x10 C _p, the average value is lower than 1.00, beginning with bonded At the end of lamination, C _p <1.33, and C _p <1.00 to the drive side and operation side, as shown in the conventional method and apparatus for manufacturing the laminated body of the optical display device, only based on the fact that it only contains the components in the width direction. The detected data at the two places of the short side x10 cannot be aligned between the liquid crystal panel 5 and the optical film sheet.

In addition, in Patent Literature 1 and Patent Literature 2, although a detection device that detects the edge detection device at the tip of the optical film sheet and the alignment mark of the liquid crystal panel is disclosed, it does not disclose the connection with the liquid crystal panel realized by the present invention. The idea of high attachment accuracy on both sides of the same.

According to Patent Document 3, it is disclosed that the both ends of the optical film sheet peeled from the carrier film before the bonding position are detected by two imaging devices composed of, for example, CCD cameras, based on the detection data The tip position of the optical film sheet is adjusted, and the tip position of the corresponding panel member is read on the other side, and the panel member is adjusted in position and bonded to the peeled optical film sheet. However, in Patent Document 3, like Patent Document 1 and Patent Document 2, it is not disclosed at all that only the long sides of the front ends of the first and second optical film sheets with different composition widths are read to calculate the relative The respective deviation angles between the horizontal reference position and the vertical reference position are based on the idea of controlling the posture of the liquid crystal panel. According to Patent Document 3, when the positions of both ends of the short side constituting the front end surface of the optical film sheet are detected, it can be understood from the data of FIG. 6 that it is impossible to achieve the high adhesion accuracy of the present invention.

As can be understood from FIGS. 6 and 7, even if only the two-point position information in the width direction of the short side position data disclosed in Patent Documents 1 to 3 controls the posture of the liquid crystal panel 5, the first and second sides of the liquid crystal panel 5 are combined. Optical film sheets cannot achieve the same adhesion accuracy.

Patent Document 4 discloses a detection mechanism for detecting the tip of an equivalent film sheet of an optical film sheet before bonding to a substrate in a method and apparatus for manufacturing a laminate of an optical display device by the RTP method, but it does not The idea of bonding a first optical film sheet and a second optical film sheet with different widths to both sides of the liquid crystal panel is not disclosed. In Patent Document 5, only the process of reading the positions of both ends of the tip of the optical film sheet is described, and the first optical film sheet and the second optical film sheet with different widths are laminated on both sides of the liquid crystal panel. This is nothing more than a detection mechanism for the positions of both ends in the width direction of the tip portion of the optical film sheet described in Patent Document 3.

As described above, in the laminate 6 of the optical display device manufactured in the RTP method, when the first optical film sheet 10 and the second optical film sheet 11 are bonded to one side 50 and the other side 51 of the liquid crystal panel 5, only the reading The two ends of the respective long sides y10 and y11 of the front ends of the first optical film sheet 10 and the second optical film sheet 11 of different widths are formed, and the posture of the liquid crystal panel 5 is controlled based on the position information of the two ends , Thereby achieving precise adhesion of the first optical film sheet 10 and the second optical film sheet 11 on both sides of the liquid crystal panel 5 degree. Therefore, in order to achieve high attaching accuracy, the present invention does not rely on location information of more than 3 points but only uses location information of two locations to achieve the same attaching accuracy, and does not include multiple detections that increase the probability of failure in manufacturing processes. The mechanism can achieve high attachment accuracy with the smallest detection mechanism.

Although the present invention is explained by the examples and drawings, the present invention is not limited thereto. Those with ordinary knowledge in the technical field to which the present invention pertains can of course perform various applications within the technical idea of the present invention and the scope of the patent application described below. Modification and deformation.

5‧‧‧LCD Panel

6‧‧‧Laminated body

10‧‧‧The first optical film sheet

11‧‧‧Second optical film sheet

30‧‧‧The first carrier film

31‧‧‧Second carrier film

50‧‧‧One side of the LCD panel (TFT side)

51‧‧‧The other side of the LCD panel (CF side)

60‧‧‧The first peeling mechanism

61‧‧‧Second peeling mechanism

80‧‧‧The first counterpoint organization

81‧‧‧The second counterpoint organization

90‧‧‧The first bonding mechanism

91‧‧‧The second bonding mechanism

100‧‧‧First bonding position

110‧‧‧The first manufacturing line

120‧‧‧First bonding station

200‧‧‧The second bonding position

210‧‧‧The second manufacturing line

220‧‧‧The second bonding station

R1‧‧‧The first optical film laminate

R2‧‧‧The second optical film laminate

Claims (12)

A method of manufacturing a laminate for an optical display device, in which a strip-shaped first carrier film whose width or length corresponds to the width or length of one side of a rectangular liquid crystal panel is oriented toward the width of the aforementioned first carrier film with the long side The first optical film sheet corresponding to the size of one side of the liquid crystal panel, which is continuously supported in the way of the direction, is peeled from the first carrier film and bonded to one side of the liquid crystal panel, and the width or length corresponds to that of the liquid crystal panel A second optical film sheet corresponding to the size of the other side of the liquid crystal panel that is continuously supported on the strip-shaped second carrier film with the long side facing the long side direction of the second carrier film with the other side of the width or length The material is peeled from the second carrier film and attached to the other side of the liquid crystal panel, wherein the method includes: when the front end or rear end of the first optical film sheet reaches a predetermined first detection position , Stop the conveyance of the first carrier film, and detect one end and the other end corresponding to the widthwise ends of the front end or rear end of the long side of the first optical film sheet; The position information formed by the one end and the other end of the two ends in the width direction is a process of aligning one surface of the liquid crystal panel with the first optical film sheet; and the first optical film sheet is removed from the first optical film sheet. 1 The process of peeling the carrier film and attaching it to one side of the liquid crystal panel; when the front end of the second optical film sheet reaches the predetermined second detection position, the transportation of the second carrier film is stopped, and the detection is equivalent to Aforementioned The process of the front end and the rear end of any one of the two end positions of the long side of the second optical film sheet; based on the construction of the rear end and the front end of the two ends of the side end Position information, the process of aligning the other side of the liquid crystal panel with the second optical film sheet; the process of peeling the second optical film sheet from the second carrier film and bonding it to the other side of the liquid crystal panel . The method according to claim 1, wherein the first optical film sheet is formed of a first polarizing film, and the second optical film sheet is formed of a second polarizing film. The method according to claim 1 or 2, wherein one surface of the liquid crystal panel is a surface on the TFT side, and the other surface of the liquid crystal panel is a surface on the CF side. The method according to claim 1 or 2, wherein the process of detecting one end and the other end of the two ends in the width direction of the first optical film sheet further includes: calculating one end and the other end of the two ends The process of detecting the deviation angle θ1 between the side ends of the second optical film sheet; the process of detecting the front end and the rear end of either end of the second optical film sheet, and further includes: calculating the foregoing rear end and the foregoing end of the second optical film sheet The process of deviation angle θ2 between the tips. The method according to claim 4, wherein the process of aligning one side of the liquid crystal panel with the first optical film sheet is based on the deviation The difference angle θ1 positions one side of the liquid crystal panel on the first optical film sheet; the process of aligning the other side of the liquid crystal panel with the second optical film sheet is based on the deviation angle θ2 to make the liquid crystal panel The other side is positioned on the aforementioned second optical film sheet. The method according to claim 1 or 2, further comprising: folding and transporting the first carrier film on top of the first release body, and at the same time peeling off the first optical film sheet from the first carrier film; The second carrier film is folded back and transported on the top of the second release body while peeling the second optical film sheet from the second carrier film; the first optical film sheet is peeled from the first carrier film and The process of bonding to one side of the liquid crystal panel includes: restarting the transportation of the first carrier film whose transportation has been stopped, and peeling the first optical film sheet from the first carrier film while bonding to the liquid crystal panel One side of the process; the process of peeling the second optical film sheet from the second carrier film and attaching it to the other side of the liquid crystal panel includes: restarting the transport of the second carrier film that has been stopped, and The process of peeling the second optical film sheet from the second carrier film and bonding to the other side of the liquid crystal panel. A device for manufacturing a laminate for an optical display device. The width or length corresponds to the width or length of one side of a rectangular liquid crystal panel. The first optical film sheet corresponding to the size of one side of the liquid crystal panel, which is continuously supported so that the long side faces the width direction of the first carrier film, is peeled from the first carrier film and pasted Attached to one side of the liquid crystal panel, and the width or length corresponding to the width or length of the other side of the liquid crystal panel is covered on the strip-shaped second carrier film with the long side facing the long side direction of the second carrier film The continuously supported second optical film sheet corresponding to the size of the other side of the liquid crystal panel is peeled from the second carrier film and bonded to the other side of the liquid crystal panel, wherein the device includes: when the first optical film When the front end or rear end of the sheet reaches the predetermined first detection position, the conveyance of the first carrier film is stopped, and the front end or rear end corresponding to the long side of the first optical film sheet is detected The first detection mechanism at one end of the two ends in the width direction and the second detection mechanism at the other end are detected; based on the position information composed of the one end and the other end of the two ends in the width direction, A first positioning mechanism for aligning one side of the liquid crystal panel with the first optical film sheet; peeling the first optical film sheet from the first carrier film and bonding it to a first side of the liquid crystal panel Laminating mechanism; when the front end of the second optical film sheet reaches the predetermined second detection position, the conveyance of the second carrier film is stopped, and the corresponding long side of the second optical film sheet is detected The third detection mechanism at the front end of any one of the two end positions of the side ends and the fourth detection mechanism at the rear end of the foregoing two ends; A second alignment mechanism that aligns the other side of the liquid crystal panel with the second optical film sheet based on the position information formed by the rear end and the front end of the two ends of the side end; The second optical film sheet is peeled from the second carrier film and bonded to the second bonding mechanism on the other side of the liquid crystal panel. The apparatus according to claim 7, wherein the first optical film sheet is formed of a first polarizing film, and the second optical film sheet is formed of a second polarizing film. The device according to claim 7 or 8, wherein one surface of the liquid crystal panel is a surface on the TFT side, and the other surface of the liquid crystal panel is a surface on the CF side. The apparatus according to claim 7 or 8, wherein the first detection mechanism and the second detection mechanism that detect the positions of both ends in the width direction of the first optical film sheet further include: calculating the two The first calculating mechanism of the deviation angle θ1 between the one end of the end position and the other end; detecting the first end of the two ends and the first end of the rear end of any one of the side ends of the second optical film sheet The 3 detection mechanism and the fourth detection mechanism further include a second calculation mechanism that calculates the deviation angle θ2 between the rear end and the front end. The device according to claim 10, wherein the first alignment mechanism is based on the deviation angle θ1 to separate one side of the liquid crystal panel from the The first optical film sheet is aligned; the second alignment mechanism aligns the other side of the liquid crystal panel with the second optical film sheet based on the deviation angle θ2. The device described in claim 7 or 8, the device further includes: the first carrier film is folded back on the first top and transported while peeling the first optical film sheet from the first carrier film. The first peeling body at the top; and the second peeling body with the second top that the second carrier film is folded back and transported on the second top while the second optical film sheet is peeled from the second carrier film; The first bonding mechanism in which the first optical film sheet is peeled from the first carrier film and bonded to one side of the liquid crystal panel is to restart the transportation of the first carrier film that has been stopped, and the first The optical film sheet is peeled from the first carrier film while being bonded to one side of the liquid crystal panel; the second optical film sheet is peeled from the second carrier film and bonded to the second side of the liquid crystal panel. The bonding mechanism restarts the transportation of the second carrier film whose transportation has been stopped, and peels the second optical film sheet from the second carrier film while bonding it to the other side of the liquid crystal panel.

Images