JP6697109B1 - Method for manufacturing optical display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical display device without causing streaky deformation of an adhesive layer, sticking displacement or floating of a tip portion. SOLUTION: At a panel bonding position 100, the tip end of a sheet-shaped optical functional film 3 is sent to the panel bonding position while peeling together with an adhesive layer 4 from a carrier film 2 of a band-shaped optical film laminate 1, and a panel member 5 is fed. The non-stop pasting is performed by sandwiching and sticking without stopping by the sticking rollers 51 and 52 that are opened and closed in the vertical direction and operated by a closing operation by a non-stop sticking method to form a linear deformation in the width direction of the adhesive layer through the adhesive layer. In a method for manufacturing an optical display device by adhering to a panel member without causing a crack, a pair of adhering rollers are pressed from the side opposite to the surface of the pressure-sensitive adhesive layer of the tip end portion 32 of the sheet-like optical functional film. And a driven roller that rotates integrally with the driving roller 52 by pressing from a side opposite to the surface of the panel member. [Selection diagram] Figure 1

Description

  The present invention relates to a method of manufacturing an RTP type optical display device. More specifically, the present invention, the front end of the sheet-shaped optical functional film before peeling, stopped at a stop position that does not project from the top of the peeling body having a top, by the rewinding of the carrier film, While peeling the sheet-shaped optical functional film from the carrier film together with the pressure-sensitive adhesive layer at the top of the peeling body, the leading end of the sheet-shaped optical functional film is sent from the stop position on the peeling body to the panel laminating position, without stopping. By stacking on the panel member conveyed to the panel laminating position, and sandwiching and laminating the adhesive layer via the adhesive layer by a laminating roller that opens and closes in a direction perpendicular to the conveying direction of the panel member, The present invention relates to a method for manufacturing an optical display device so as not to cause streak-like deformation in the width direction.

  2. Description of the Related Art In recent years, a roll-to-panel (RTP) type manufacturing apparatus and method have been adopted in manufacturing sites for optical display devices (for example, Patent Document 1). In the RTP method, an optical display device is usually manufactured as follows. First, a strip-shaped optical film laminate having a predetermined width is unrolled from the roll. The belt-shaped optical film laminate is a belt-shaped carrier film, an adhesive layer formed on one surface of the carrier film, and an optical functional film (protective film) supported on the carrier film via the adhesive layer. , A polarizer, a protective film, a pressure-sensitive adhesive layer and a surface protective film). By continuously cutting lines in the widthwise stretched optical film laminate, a sheet-shaped optical functional film is formed between adjacent cutting lines, and adjacent sheet-shaped optical functions are formed. The films can be trimmed from each other by the pulling action.

  The sheet-shaped optical functional film continuously supported on the carrier film is usually a normal one having no defects, but is peeled together with the pressure-sensitive adhesive layer from the carrier film by peeling means arranged near the panel bonding position. , Will be delivered to the panel pasting position. The sheet-shaped optical functional film that has reached the panel bonding position is attached to the corresponding bonding surface of the panel member separately conveyed to the panel bonding position by, for example, a bonding device consisting of a pair of upper and lower bonding rolls that open and close in the vertical direction. It is sandwiched and laminated.

  In the peeling means, the carrier film side of the optical film laminate is wrapped around the top of the substantially wedge-shaped peeling means having the top facing the panel bonding position. The sheet-shaped optical functional film is a pressure-sensitive adhesive from the carrier film when the carrier film wrapped around the peeling means is conveyed while being folded back in a direction substantially opposite to the conveying direction of the sheet-shaped optical functional film toward the panel bonding position. Stripped with layers. In the present specification, the position on the apparatus where the sheet-shaped optical functional film is peeled off from the carrier film is called a peeling position, and the peeling position exists near the top of the peeling means.

  In such an RTP manufacturing system, streak-shaped deformation is likely to occur in the pressure-sensitive adhesive layer of the sheet-shaped optical functional film. Conventionally, in the case of a relatively thick optical function film, even if streak-shaped deformation occurs in the pressure-sensitive adhesive layer, it is difficult to recognize that the deformation is a defect on the image of the optical display device. However, due to the demand for high precision and high quality of the optical display device which has been demanded in recent years, streak-like deformation of the pressure-sensitive adhesive layer, which has not been recognized as a defect in the past, can also become a defect. Furthermore, as the optical functional film becomes thinner, the ratio of the thickness of the pressure-sensitive adhesive layer to the thickness of the optical functional film increases as compared with the conventional thick optical functional film. With the spread of such a thin optical functional film, the streaky deformation formed in the pressure-sensitive adhesive layer cannot be left as a defect on the image of the optical display device.

  In order to solve such a technical problem, the leading end of the sheet-shaped optical functional film which is edge-cut by the tensile action of the adjacent sheet-shaped optical functional film is stopped at a stop position that does not project from the top of the peeling body having the top, and By the rewinding of the carrier film, the leading edge of the sheet-shaped optical functional film, which was cueed together with the pressure-sensitive adhesive layer, is placed on the panel member that has been conveyed to the panel laminating position, and a pair of pasting that moves vertically By a non-stop sticking operation, in which the sticking roller is operated by the closing operation of the roller, the non-stop sticking is performed by sandwiching the sticking layer through the pressure-sensitive adhesive layer without stopping the sticking roller so that the streak-like deformation in the width direction of the pressure-sensitive adhesive layer does not occur. A method for manufacturing a display device was filed on June 29, 2018 as Japanese Patent Application No. 2018-123825 (hereinafter, referred to as "prior invention").

  According to the invention of the prior application, a method of manufacturing an optical display device was realized so as not to cause streak-shaped deformation in the pressure-sensitive adhesive layer by the non-stop bonding at the panel bonding position. , It is difficult to control the timing of closing operation of a pair of sticking rollers that move up and down in the vertical direction, and the sticking shift occurs depending on the control, and the sticking rollers are insufficiently pressed at the start of sticking, and floating occurs between them. It became clear that advanced control is required to match the timing of the closing operation of the sticking roller.

  The timing of the closing operation of the pair of sticking rollers may cause a gap between the panel member and the sheet-shaped optical functional film, and the insufficient sticking of the sticking rollers at the start of sticking may cause floating between the panel member and the panel member. As a result of diligent studies, the present inventors have clarified that all of these technical phenomena are derived from the configuration of a pair of sticking rollers that are opened and closed in the vertical direction used in the invention of the prior application. I was able to do it.

  As shown in Patent Document 1, the sticking apparatus used in the manufacturing apparatus and method of the RTP method is a pair of sticking rollers that open and close in the vertical direction. In order to ensure the stability during the transfer of sticking, such sticking devices usually have a sticking roller on the panel member side as a driving roller and a sticking roller on the film side as a driven roller, or both sticking rollers are driven together. It is either configured to interlock with the axis.

  Regarding the driving of the sticking roller, the sticking device used in the invention of the prior application also has a sticking roller on the panel member side as a driving roller and a sticking roller on the film side as a driven roller. Therefore, the non-stop pasting at the panel pasting position that constitutes the invention of the prior application may cause the following situations depending on the timing of the closing operation of the pasting rollers of the pasting device including the pair of pasting rollers that open and close in the vertical direction. Is hard to avoid. For example, if there is a time difference between the drive roller on the panel member side and the drive roller on the panel member side that comes in contact with the panel member slightly before the timing of the closing operation of the sticking roller, it is sandwiched by the driven roller on the film side with the time difference, and thus the panel roller is driven by the drive member. As a result of a slight contact, the sticking will occur.

  On the other hand, when the timing of the closing operation of the sticking roller is slightly different from the time when the driven roller on the film side comes into contact with the leading end of the sheet-shaped optical function film, the driving roller on the panel member side does not exist for a moment at the beginning of sticking. Since the driven roller cooperates with the drive roller to start the sandwiching operation in this state, the pressing at the beginning of the sticking is insufficient and floating occurs at the leading end of the sheet-like optical functional film with respect to the panel member.

Japanese Patent No. 4361103 JP, 2012-27455, A JP 2012-113060 A JP, 2004-361741, A

  An object of the present invention is to feed a front end portion of a sheet-shaped optical functional film to a panel laminating position while peeling it together with an adhesive layer from a carrier film of a band-shaped optical film laminate at a panel laminating position. The non-stop laminating is performed by non-stop laminating by sandwiching and laminating without stopping with a laminating roller that is stacked on a member and operates by a closing operation of a pair of laminating rollers that open and close in the vertical direction. In the method of the invention of the prior application in which an optical display device is manufactured by bonding to a panel member without causing streak-shaped deformation, at the beginning of non-stop bonding at the panel bonding position, a bonding shift caused by the movement of the panel member. The present invention also provides a means for solving a new problem of floating between the panel member and the panel member which is generated at the leading end of the sheet-shaped optical functional film due to insufficient pressure on the film side by the sticking roller.

  In Patent Document 1, the optical film sheet is peeled from the separator by feeding the separator so as to be folded back at an acute position at a bonding position of an apparatus for bonding the optical film sheet to the panel member, and the optical film peeled from the separator. It is described that a product panel is attached to an optical film sheet that does not hit a defective portion among the film sheets. Patent Document 1 further describes a pair of conventional laminating mechanisms in which both the guide roller and the laminating roller are drive rollers.

  In each of Patent Document 2 and Patent Document 3, a pair of pasting rollers of another conventional type in which the panel side is a driving roller and the film side is a driven roller is used, and in Patent Document 2, a pair of pasting rollers is used. It is described that the generation of sticking bubbles is prevented by adjusting the pressing force between them. In Patent Document 3, the sticking speed by the pair of sticking rollers is set to be faster than the conveying speed of the sheet piece by the carrier film, and sticking is performed. It is described that the generation of bubbles is prevented.

  Patent Documents 1 to 3 describe a method of manufacturing an optical display device by sandwiching and laminating a panel member and a sheet-shaped optical functional film with a pair of laminating rollers that operate in an RTP device. In any of Patent Documents 1 to 3, there is no description about non-stop sticking at a panel sticking position for sticking a sheet-shaped optical functional film to a panel member, and the non-stop sticking at the panel sticking position is peeled together with the adhesive layer from the carrier film. Further, there is no description regarding the production of the mechanical display device so as not to cause the line-shaped deformation of the pressure-sensitive adhesive layer of the sheet-shaped optical functional film.

  The pair of sticking rollers described in Patent Document 1 is a conventional sticking device configured by both drive rollers. In addition, in each of the pair of sticking rollers described in Patent Documents 2 and 3, the sticking rollers on the panel member side are both configured by drive rollers, and the film side of the sheet-shaped optical functional film is configured by a driven roller. It is a conventional sticking device. Therefore, in Patent Documents 1 to 3, conventional sticking for combining with non-stop sticking at the panel sticking position without causing streaky deformation of the adhesive layer by the non-stop sticking at the panel sticking position. There is no proposal for a new sticking device to replace the device.

  The inventors of the present invention have made extensive studies, and a new pasting device that replaces the conventional type combined with non-stop pasting at the panel pasting position, specifically, a driven roller on the panel side of the panel member and a film of a sheet-like optical functional film. A method of manufacturing an optical display device has been realized by using a sticking device including a pair of sticking rollers that opens and closes in a direction perpendicular to a conveying direction of a panel member constituted by a side driving roller. Thereby, the sheet-shaped optical functional film peeled off together with the adhesive layer from the carrier film is applied to the panel member standing by at the panel laminating position, which is the subject of the present invention, to cause streaky deformation in the width direction of the adhesive layer. It is possible to manufacture a laminated optical display device by sandwiching the sheet-shaped optical functional film and the panel member so as to suppress the occurrence of floating due to the displacement of the bonding roller and / or the insufficient pressure of the bonding roller. It was

Embodiments of the present invention are as follows.
As shown in FIG. 1, the carrier film 2 was continuously supported on the carrier film 2 through the pressure-sensitive adhesive layer 4 formed on one surface of the carrier film 2 and the pressure-sensitive adhesive layer 4. While exfoliating the sheet-shaped optical functional film 3 together with the pressure-sensitive adhesive layer 4 from the carrier film 2 of the belt-shaped optical film laminated body 1 including a plurality of sheet-shaped optical functional films 3, the front end portion 32 of the sheet-shaped optical functional film 3 is removed. , A pair of attachments that are sent to the panel attachment position 100 and overlapped on the panel member 5 conveyed to the panel attachment position 100 without stopping and at the same time open and close in a direction perpendicular to the conveyance direction of the panel member 5 This is a method of manufacturing the optical display device 6 by sandwiching and adhering the sheet-shaped optical functional film 3 and the panel member 5 with the rollers 51 and 52.

  As shown in FIG. 3A to FIG. 3C and FIG. 4 and FIG. 5A to FIG. 5C and FIG. 6, the present method presses from the side 40 opposite to the surface of the pressure-sensitive adhesive layer 4 of the tip portion 32 of the sheet-like optical functional film 3. The rotating driving roller 51 for sending the sheet member integrally with the panel member 5 and the sheet-shaped optical functional film 3 rotating in conjunction with the driving roller 51 are pressed and rotated from the opposite side 50 of the surface of the panel member 5 to which the sheet is adhered. A sticking device 53 including a pair of sticking rollers 51 and 52 composed of a driven roller 52 and a sticking roller 53 is used.

  As shown in FIG. 3A (a1) and FIG. 5A (a1), the present method is to position the tip 32 of the sheet-shaped optical functional film 3 supported on the carrier film 2 at a position facing the panel bonding position 100. Step A of stopping at the stop position 200 on the peeling body 60 without protruding from the top portion 61 of the peeling body 60 having the top portion 61 arranged in the same manner, and as also shown in FIGS. 3A (c1) and 5A (c1). In addition, the step B of transporting the panel member 5 to the panel bonding position 100 where the pair of bonding rollers 51 and 52 are opened, stopping and waiting is included.

  FIG. 3A (d1) to FIG. 3B (f1), which is one of the embodiments of the present method, which is interlocked with step A and step B of the present method, and FIG. 5A, which is another embodiment of the present method. The steps (d1) to FIG. 5B (f1) are different in the timing of the operation of feeding out the leading end portion 32 of the sheet-shaped optical functional film 3 and the timing of the closing operation of the pair of sticking rollers 51, 52. The method further includes any of the following three steps.

  As shown in FIG. 3A (d1), the present method further causes the driven roller 52 to contact the opposite side 50 of the panel member 5 standing by at the panel bonding position 100 to the surface on which the sheet-shaped optical functional film 3 is bonded. As shown in step C and FIG. 3B (e1), the carrier film 2 is conveyed while being folded back at the top portion 61 of the peeling body 60, thereby peeling the sheet-shaped optical functional film 3 together with the pressure-sensitive adhesive layer 4 and the sheet. 3B (step D of sending the front end portion 32 of the optical functional film 3 from the stop position 200 on the peeling body 60 toward the panel bonding position 100 so that the front end portion 32 of the sheet-shaped optical function film 3 is superposed on the standby panel member 5 without stopping. As shown in f1), the front end portion 32 of the sheet-shaped optical functional film 3 sent without stopping has reached a predetermined position 300 on the peeling body 60 between the stop position 200 and the panel bonding position 100. By detecting that, the step E of switching the drive roller 51 in the open state and closing the front end portion 32 of the sheet-shaped optical functional film 3 before the leading end portion 32 of the sheet-shaped optical functional film 3 overlaps with the panel member 5 standing by at the panel bonding position 100. Including.

  Alternatively, as shown in FIG. 5A (d1), the present method further peels the sheet-shaped optical functional film 3 together with the pressure-sensitive adhesive layer 4 by transporting the carrier film 2 while folding it back at the top 61 of the peeling body 60. Meanwhile, from the stop position 200 on the peeling body 60 to the panel bonding position 100 so that the front end portion 32 of the sheet-shaped optical functional film 3 overlaps the panel member 5 standing by at the panel bonding position 100 without stopping. As shown in FIG. 5B (e1), the leading end portion 32 of the sheet-shaped optical functional film 3 sent without stopping moves from the stop position 200 on the peeling body 60 to the panel bonding position 100. Step E ′ in which the driving roller 51 in the open state is switched and the closing operation is performed after it is detected that the predetermined position 300 has been reached, and as shown in FIG. 5B (f1), the panel bonding position 100 is waited. Step C ′ of bringing the driven roller 52 into contact with the opposite side 50 of the surface of the panel member 5 to which the sheet-shaped optical functional film 3 is attached.

  Further, the present invention, as shown in FIG. 3B (f1) and FIG. 5B (f1), contacts the driven roller 52 on the opposite side 50 to the surface on which the sheet-shaped optical functional film 3 is bonded at the panel bonding position 100. The front end portion 32 of the sheet-shaped optical functional film 3 is superposed on the panel member 5 thus closed, and at the same time, the closing operation is performed, and as shown in FIGS. 3B (g1) and 5B (g1), the sheet is formed by the rotating drive roller 51. It is pressed from the side 40 opposite to the surface of the pressure-sensitive adhesive layer of the tip portion 32 of the optical function film 3, and as shown in FIG. 3C (h1) and FIG. 5C (h1), it is fed without stopping in conjunction with the driven roller 52. Step F for sandwiching and adhering the sheet-shaped optical function film 3 and the panel member 5 to each other, and the sheet-shaped optical function supported on the carrier film 2 as shown in FIGS. 3C (i1) and 5C (i1). A drive that stops when the next front end 32 ′ of the film 3 reaches the stop position 200 on the peeling body 60 and closes and rotates with the next front end 32 ′ of the sheet-shaped optical functional film 3 that has stopped. Step G of cutting the rear end portion 31 of the sheet-shaped optical functional film 3 that is bonded and conveyed to the panel member 5 by the rotation of the roller 51 from each other, and as shown in FIGS. 3C (j1) and 5C (j1). The step H of opening the pair of sticking rollers 51, 52 after the sticking of the sheet-shaped optical functional film 3 and the panel member 5 is completed by the pair of sticking rollers 51, 52.

  As one embodiment of the present invention, as shown in FIG. 3A to FIG. 3C and FIG. 4, a driven roller 52 is brought into contact with the opposite side 50 of the standby panel member 5 to which the sheet-shaped optical functional film 3 is attached. The step C of detecting detects that the front end portion 32 of the sheet-shaped optical functional film 3 sent without stopping has reached a predetermined position 300 on the peeling body 60 between the stop position 200 and the panel bonding position 100. It can be done before doing.

  As another embodiment of the present invention, as shown in FIG. 5A to FIG. 5C and FIG. 6, a driven roller 52 is brought into contact with a side 50 of the panel member 5 which is on standby, which is opposite to the surface on which the sheet-shaped optical functional film 3 is bonded. The step C ′ of making sure that the leading end portion 32 of the sheet-shaped optical functional film 3 sent without stopping has reached a predetermined position 300 between the stop position 200 on the peeling body 60 and the panel bonding position 100. It can also be performed after the detection.

  As one of the embodiments of the present invention, as shown in FIG. 3B (e1), FIG. 4 (s10), FIG. 5A (d1), and FIG. 6 (s10), the driving roller 51 is a driven roller 52. Before sandwiching the sheet-shaped optical functional film 3 and the panel member 5, the same speed as the feeding speed v1 of the sheet-shaped optical functional film 3 when the front end portion 32 of the sheet-shaped optical functional film 3 is superposed on the panel member 5. Therefore, it is preferable to rotate.

  Furthermore, as one of the embodiments of the present invention, as shown in FIG. 3B (f1) and FIG. 4 (s13) and FIG. 5B (e1) and FIG. 6 (s13), the rear end of the sheet-shaped optical functional film 3 is Detecting that the leading end 32 of the sheet-shaped optical functional film 3 has reached a predetermined position 300 between the stop position 200 on the peeling body 60 and the panel bonding position 100 by monitoring the feeding distance of the part 31. You may do so.

  As another embodiment of the present invention, as shown in FIG. 3B (g1) and FIG. 4 (s16) and FIG. 5B (g1) and FIG. 6 (s16), the tip end portion of the sheet-like optical functional film 3 is It is preferable that the sticking start speed v2 of the sheet-shaped optical function film 3 in which 32 is superposed on the panel member 5 and is sandwiched by the drive roller 51 and the driven roller 52 and is fed simultaneously is less than 10 mm / sec.

  As another one of the embodiments of the present invention, as shown in FIG. 3C (i1) and FIG. 4 (s17) and FIG. 58 (i1) and FIG. 6 (s17), a driving roller 51 and a driven roller 52 are further provided. When the pasting of the sheet-shaped optical functional film 3 and the panel member 5 sandwiched by is reached to a predetermined length, the rotation speed of the drive roller 51 is changed from the pasting start speed v2 to the pasting start speed v2. A step of switching to v3 and further bonding the sheet-shaped optical functional film 3 and the panel member 5 can be included.

  As another embodiment of the present invention, FIG. 3B (e1) (f1) and FIG. 4 (s10) (s12) and FIG. 5A (d1) 5B (e1) and FIG. 6 (s10) (s12) are also shown. As shown, the tip end portion 32 of the sheet-shaped optical functional film 3 is sent out from the stop position 200 on the peeling body 60 toward the panel bonding position 100 at a sending speed v1 adjusted to a speed higher than the sticking start speed v2. Before reaching a predetermined position 300 between the stop position 200 on the peeling body 60 and the panel bonding position 100, the delivery speed v1 is switched to the sticking start speed v2, and the sheet-shaped optical functional film 3 is further stopped without stopping. The method may further include the step of stacking the front end portion 32 of the above on the standby panel member 5.

Furthermore, as another one of the embodiments of the present invention, FIGS. 3C (h1) to (j1) and FIGS. 4 (s17) to (s18) and 5C (h1) to (j1) and FIGS. 6 (s16) to (s17). ), The leading speed 32 of the sheet-shaped optical functional film 3 is sent from the stop position 200 on the peeling body 60 toward the panel bonding position 100, and the stop position 200 on the peeling body 60. From the delivery speed v1 before reaching the predetermined position 300 between the sheet bonding position and the panel bonding position 100, and the bonding of the sheet-shaped optical functional film 3 and the panel member 5 reaches the predetermined length. When the bonding speed of the drive roller 51 is changed from the bonding start speed v2 to the bonding operation speed v3,
v1 ≧ v2, v3 >> v1
It is more preferable to have the relationship of

FIG. 3 is an enlarged schematic view of an apparatus for manufacturing an optical display device by laminating a sheet-shaped optical functional film and a panel member via an adhesive layer using a pair of laminating rollers at a panel laminating position. In the enlarged schematic view, a two-point moving type camera detection device for reading the rear end of the sheet-shaped optical functional film and the leading end of the sheet-shaped optical functional film are positioned at the stop position on the peeling body with the conical cross section having the top. Then, a two-point movement type camera detection device that detects the position of the leading end by reading the rear end of the sheet-like optical functional film is indicated by the current position and the virtual position so as to reciprocate by the moving distance δ. .. FIG. 2A to FIG. 2C are schematic views of operation images of a pair of sticking rollers which are used at the panel sticking position in the prior invention and which are opened and closed in the vertical direction. The pair of sticking rollers shown in the schematic view of FIG. 2A are both drive rollers, or the film side of the sheet-like optical functional film is a driven roller and the panel side of the panel member is a drive roller. The schematic view of FIG. 2B shows a two-point moving type camera detection device for reading the rear end of the sheet-shaped optical functional film for measuring the amount of movement of the front end of the sheet-shaped optical functional film. In the schematic view of FIG. 2C, the non-stop attaching operation at the panel attaching position is shown, and the sheet-like optical function is attached and conveyed to the next leading end of the stopped sheet-like optical function film and the panel member. The step of edging the trailing edge of the film from each other is shown. 3A to 3C are schematic views of steps corresponding to Example 1. In the pair of drive rollers shown in the schematic view of FIG. 3A corresponding to FIG. 2A, the film side of the sheet-like optical functional film is the drive roller and the panel side of the panel member is the driven roller. In FIG. 3A (d1), the step of bringing the driven roller into contact with the opposite side of the surface of the panel member on which the sheet-shaped optical function film is stuck in the panel-sticking position is sent without stopping. It is shown that this is performed before detecting that the leading end of the film has reached a predetermined position between the stop position on the peeling body and the panel bonding position. The schematic view of FIG. 3B corresponding to FIG. 2B shows a two-point moving type camera detection device for reading the rear end of the sheet-shaped optical functional film for measuring the amount of movement of the front end of the sheet-shaped optical functional film. .. In the schematic view of FIG. 3C corresponding to FIG. 2C, the next leading end portion of the stopped sheet-shaped optical functional film and the rear end portion of the sheet-shaped optical functional film that is bonded to the panel member 5 and conveyed are cut off from each other. The steps to be performed are shown. FIG. 4 is a flowchart corresponding to FIGS. 3A to 3C. [S14] corresponding to FIG. 3B (f1) represents the step of starting the closing operation of the drive roller on the optical function film side, and the next [s15] represents the step of retracting the camera detection device. 5A to 5C are schematic views of steps corresponding to the second embodiment. In the pair of sticking rollers shown in the schematic view of FIG. 5A corresponding to FIG. 2A, the film side of the sheet-like optical functional film is a driving roller, and the panel side of the panel member is a driven roller. In the schematic view of FIG. 5B corresponding to FIG. 2B, the step of bringing the driven roller into contact with the side opposite to the surface of the panel member on which the sheet-shaped optical functional film is stuck, which stands by at the panel bonding position, is fed without stopping. It is shown that it is performed after detecting that the leading end of the sheet-shaped optical functional film has reached a predetermined position between the stop position on the peeling body and the panel bonding position. FIG. 5B (f1) shows that the start operation of the driven roller and that of the drive roller are started at the same timing, but the closing speed is differentiated and the driven roller is controlled to come into contact with the panel side first. Furthermore, a two-point movement type camera detection device for reading the rear end of the sheet-shaped optical functional film for measuring the amount of movement of the front end of the sheet-shaped optical functional film is shown. In the schematic view of FIG. 5C corresponding to FIG. 2C, the next leading end portion of the stopped sheet-shaped optical functional film and the rear end portion of the sheet-shaped optical functional film attached to the panel member 5 and conveyed are cut off from each other. The steps to be performed are shown. FIG. 6 is a flowchart corresponding to FIGS. 5A to 5C. [S14] corresponding to FIG. 5B (e1) represents a step in which the same timing driven roller and drive roller start the closing operation, and the next [s15] represents a step in which the camera detection device retracts, and [s15 ']. Represents a step in which the driven roller comes into contact with the panel side first and then stops.

  An object of the present invention is to feed a front end portion of a sheet-shaped optical functional film to a panel laminating position while peeling it together with an adhesive layer from a carrier film of a band-shaped optical film laminate at a panel laminating position. The non-stop laminating is performed by non-stop laminating by sandwiching and laminating without stopping with a laminating roller that is stacked on a member and operates by a closing operation of a pair of laminating rollers that open and close in the vertical direction. In the method of the invention of the prior application in which an optical display device is manufactured by bonding to a panel member without causing streak-shaped deformation, at the beginning of non-stop bonding at the panel bonding position, a bonding shift caused by the movement of the panel member. The present invention also provides a means for solving a new problem of floating between the panel member and the panel member which is generated at the leading end of the sheet-shaped optical functional film due to insufficient pressure on the film side by the sticking roller.

  As shown in the enlarged schematic diagram 1, the carrier film 2 and the pressure-sensitive adhesive layer 4 formed on one surface of the carrier film 2 are continuously supported on the carrier film 2 via the pressure-sensitive adhesive layer 4. While exfoliating the sheet-shaped optical functional film 3 together with the pressure-sensitive adhesive layer 4 from the carrier film 2 of the belt-shaped optical film laminated body 1 including the plurality of sheet-shaped optical functional films 3, the leading end of the sheet-shaped optical functional film 3 32 is sent to the panel bonding position 100, is stacked on the panel member 5 previously conveyed to the panel bonding position 100, and the sheet-shaped optical functional film 3 is formed by the closing operation of the pair of bonding rollers 51 and 52 that are opened and closed. When sandwiching and bonding the panel member 5, the sheet-shaped optical functional film 3 is bonded to the panel member 5 by non-stop bonding at the panel bonding position 100 so as not to cause streaky deformation of the adhesive layer 4. In the method of the invention of the prior application, at the beginning of the non-stop attaching at the panel attaching position 100, the sheet-shaped optical functional film 3 and the panel are arranged so as to suppress the occurrence of the displacement due to the displacement and / or the insufficient pressure of the attaching rollers 51 and 52. This is a method of sandwiching and bonding the member 5.

  FIG. 1 is an enlarged schematic diagram including a panel bonding position 100 of a device 10 for manufacturing an optical display device by the RTP method used in the prior invention and the present invention. In FIG. 1, the feeding device 8 for the sheet-shaped optical functional film 3 does not loosen the carrier film 2 in a state in which the other surface is folded inward at the top 61 of the peeling body 60 and is wound around the peeling body 60 without loosening. Alternatively, it includes carrier film feeders 80, 81, 82 which operate in unison to rewind.

  The feeding device 8 for the sheet-shaped optical functional film 3 may include forward / reverse feed rollers 80, 81 arranged at least in front and rear of the top 61 of the peeling body 60. In that case, the feeding device 8 for the sheet-shaped optical functional film 3 serves as a carrier film feeding device and a forward / reverse feed roller 80, a dancer roller 82 disposed between the forward / reverse feed roller 80 and the peeling body 60. The forward / reverse feed roller 81 of FIG. 4 and the interlocking them with each other by the control device 800 shown in FIG. 4 or 6 so that the carrier film 2 can be wound or unwound without slack. .. Accordingly, the camera detection device 70 reads the rear end portion 31 of the sheet-shaped optical functional film 3 and measures the position of the front end portion 32 of the sheet-shaped optical functional film 3, so that an accurate stroke of the sheet-shaped optical functional film 3 is obtained. Secured.

  The steps constituting the method of the prior invention (hereinafter referred to as the prior application method) are shown in FIGS. 2A to 2C. The steps constituting the method of the present invention (hereinafter referred to as the present method) are shown in FIGS. 3A to 3C and FIG. 4 and FIGS. 5A to 5C and 6. The present method includes two embodiments in which the operation of feeding out the leading end portion 32 of the sheet-shaped optical functional film 3 and the operation of closing the pair of sticking rollers 51, 52 are different in timing. Therefore, the steps common to the prior application method and the present method, and the detailed steps [s1] to [s20] of the steps common to FIG. 4 and FIG. The details of FIG. 2C, FIGS. 3A to 3C and FIG. 4, and FIGS. 5A to 5C and FIG. 6 are as follows.

  2A (a1), FIG. 3A (a1), and FIG. 5A (a1) are arranged at a position where the tip portion 32 of the sheet-shaped optical functional film 3 supported on the carrier film 2 faces the panel bonding position 100. The peeling body 60 having the apex 61 is stopped at the stop position 200 on the peeling body 60 without being cued from the top 61, and the position and angle of the tip end portion 32 of the sheet-shaped optical functional film 3 at the stopping position 200 Represents a step A for confirming by reading the rear end portion 31 of the sheet-shaped optical functional film 3.

  This is the leading edge of the sheet-shaped optical function film 3 detected by the two-point movement type camera detection device 70 of FIG. 2A (a1), FIG. 3A (a1), and FIG. 5A (a1) in FIG. 4 or 6, for example. This is shown as a step of measuring the position information x1 of the part 32 before cueing in [s1] and further recording the position information x1 in the storage device 802 of the control device 800 in [s2].

  2A (b2), FIG. 3A (b2), and FIG. 5A (b2) show a pre-sticking position of the panel member 5, that is, a pre-sticking position 600 for preparing the panel member 5 for transportation toward the panel bonding position 100. In the figure, the state in which the panel member 5 is suction-held by the suction-transporting means 90 is shown.

  This is performed by reading the tip position 500 of the panel member 5 held by the suction conveyance means 90 detected by the detection means 91 shown in FIG. 1 as position information x2 in [s4] of FIG. ], The position information x2 is recorded in the storage device 802 of the control device 800.

  4 or 6 [s6] is based on the position information x1 of the leading end portion 32 of the sheet-shaped optical function film before being indexed and the position information x2 of the leading end position 500 of the panel member 5 recorded in the storage device 802. In order to adjust the position of the panel member 5 held by the suction conveyance means 90 at the pre-sticking position 600 with respect to the front end portion 32 of the sheet-shaped optical functional film 3, for example, a deviation width in a direction orthogonal to the conveyance direction and This is a step of calculating and calculating the deviation angle (y, θ), and [s7] is a step of adjusting the position of the panel member 5 held by the suction conveyance means 90 at the pre-sticking position 600 based on it. ..

  2A (c1), FIG. 3A (c1), and FIG. 5A (c1), the panel member 5 is conveyed to the panel bonding position 100 where the pair of bonding rollers 51 and 52 are opened, stopped, and waited. Represents B. By the way, [s9] to [13] in FIG. 4 or FIG. 6 are detailed steps related to the process A and the process B common to the prior application method and the present method.

  4 or 6 [s9] is for detecting the leading end portion 32 of the sheet-like optical functional film 3 reaching the predetermined position 300 located between the stop position 200 and the panel bonding position 100, as shown in FIG. b1), FIG. 3A (b1), and FIG. 5A (b1), the two-point movement type camera detection device 70 for reading the rear end portion 31 of the sheet-shaped optical functional film 3 is attached to the sheet. End portion 31 of the sheet-shaped optical functional film 3 corresponding to when the front end portion 32 of the sheet-shaped optical functional film 3 reaches a predetermined position 300 from the position where the rear end portion 31 corresponding to the stop position 200 of the front end portion 32 of the sheet-shaped optical functional film 3 is read. Is a step of moving to a position for reading, and the moving distance is δ.

  [S10] of FIG. 4 or FIG. 6 is a step of sending the front end portion 32 of the sheet-shaped optical functional film 3 from the stop position 200 on the peeling body 60 toward the panel member 5 waiting at the panel bonding position 100. .. The delivery speed v1 of the sheet-shaped optical functional film 3 for delivering the sheet-shaped optical functional film 3 is preferably 5 mm / s to 10 mm / s.

  2B (e1), FIG. 3B (f1), and FIG. 5B (e1) show the sheet-shaped optical functional film 3 by monitoring the feed length distance δ of the rear end portion 31 of the sheet-shaped optical functional film 3. The process C which detects that the front-end | tip part 32 reached | attained the predetermined position 300 between the stop position 200 on the peeling body 60 and the panel bonding position 100 is represented. That is a step in which the leading end portion 32 of the sheet-shaped optical functional film 3 shown in [s13] of FIG. 4 or FIG. 6 reaches the predetermined position 300.

  [S14] in FIG. 4 represents a process D of starting the closing operation of the drive roller 51 on the optical function film side in a state where the driven roller 52 is in contact with the panel side 50 first. In addition, [s14] in FIG. 6 represents a step D'where the pair of sticking rollers 51 and 52 which are opened and closed start the closing operation at the same timing. However, the sticking rollers 51 and 52 that start the closing operation at the timing of the process D'include a step [s15 '] in which the driven roller 52 on the panel side having a different closing operation speed comes into contact with the panel first and then stops.

As shown in [s11] and [s12] of FIG. 4 or FIG. 6, by the time the tip end portion 32 of the sheet-shaped optical functional film 3 reaches the predetermined position 300 before the panel bonding position, the optical functional film 3 The technical intention to switch the transport speed from the sending speed v1 to the sticking start speed v2 with the panel member 5 is that the sticking rollers 51, 52 signal that the leading end 32 of the sheet-shaped optical functional film 3 is detected at the predetermined position 300. Since the closing operation of the sheet-shaped optical function film 3 is started, the tip portion 32 of the sheet-shaped optical function film 3 is reliably and stably eliminated by eliminating the speed switching after the tip portion 32 of the sheet-shaped optical function film 3 is detected at the predetermined position 300. This is because the front end portion 32 of the sheet-shaped optical function film 3 and the panel member 5 are sandwiched between the sticking rollers 51 and 52 at the same time as the sheet is stacked on the panel member 5 without stopping. However, in the case of FIGS. 3A-3C and FIG. 4 of one embodiment of the method,
The forward end portion 32 of the sheet-shaped optical functional film 3 that has been sent out is superposed on the panel member 5 that is on standby without stopping. However, as shown in FIGS. 5A to 5C of the prior application method or the other embodiment of the present method. What is different from the case of FIG. 6 due to the closing operation of the sticking rollers 51 and 52 will be described later.

The decisive difference between the prior application method and this method is the closing operation of the sticking rollers 51 and 52.
The pasting rollers 51 and 52 of the pasting device 53 used in the prior application method are driven by the pasting roller 52 on the panel member side being a driving roller and the pasting roller 51 on the film side being a driven roller, or the pasting roller. Both 51 and 52 are composed of drive rollers. Therefore, non-stop pasting at the panel pasting position that constitutes the invention of the prior application is highly accurate depending on the timing of the closing operation of the pasting roller of the pasting device 53 including the pair of pasting rollers 51 and 52 that move vertically. The closing operation is extremely difficult, and it is unavoidable that the tip end portion 32 of the sheet-shaped optical function film 3 on the panel member 5 is misaligned and / or lifted.

  As shown in FIG. 3A to FIG. 3C and FIG. 4 and FIG. 5A to FIG. 5C and FIG. 6, the present method presses from the side 40 opposite to the surface of the pressure-sensitive adhesive layer 4 of the tip portion 32 of the sheet-like optical functional film 3. The rotating driving roller 51 for sending the sheet member integrally with the panel member 5 and the sheet-shaped optical functional film 3 rotating in conjunction with the driving roller 51 are pressed and rotated from the opposite side 50 of the surface of the panel member 5 to which the sheet is adhered. By using a sticking device 53 including a pair of sticking rollers 51, 52 composed of a driven roller 52 and a follower roller 52, the closing operation of the sticking roller at the closing operation timing as seen in one embodiment of the present method is performed. It becomes extremely easy, and it is possible to prevent sticking displacement and / or floating of the tip end portion 32 of the sheet-shaped optical functional film 3 with respect to the panel member 5.

The outline of the prior application method is as follows.
2A to 2C, while peeling the sheet-shaped optical functional film 3 from the carrier film 2, the tip end portion 32 of the sheet-shaped optical functional film 3 is advanced toward the panel bonding position 100 and waits at the panel bonding position 100. At the same time that the front end portion 32 of the sheet-shaped optical functional film 3 is located on the panel member 5, at the same time, a pair of sticking rollers 51 and 52 are simultaneously started, or a drive roller 52 that rotates on the panel side is started, and the sheet-shaped optical film is At the same time when the rear end portion 311 of the functional film 3 is detected, the pair of sticking rollers 51 and 52 start the closing operation. Then, the front end portion 32 of the sheet-like optical functional film 3 is superposed on the panel member 5 standing by at the panel laminating position 100, and is sandwiched by a pair of laminating rollers 51, 52 or a rotating driving roller 52 and a driven roller 51. Is a step of forming a method for manufacturing the optical display device 6 by cutting the rear end portion 31 of the sheet-shaped optical functional film 3 and adhering the sheet-shaped optical functional film 3 to the panel member 5.

An outline of one embodiment of this method is as follows.
3A to 3C and FIG. 4 show that the tip portion 32 of the sheet-shaped optical functional film 3 is placed at the panel bonding position 100 while peeling the sheet-shaped optical functional film 3 from the carrier film 2 shown in [s10] to [s12]. The drive roller 51 which is rotated at the same time as the leading end portion 32 of the sheet-shaped optical functional film 3 is indexed to the panel member 5 standing by at the panel bonding position 100 shown in [s8] is started to start the sheet-shaped sheet. Before detecting the rear end portion 31 of the optical function film 3, the driven roller 52 shown in [s8 ′] contacts the panel member 5 first. Next, after [s13], the rotating drive roller 51 shown in [s14] starts the closing operation, and the leading end portion 32 of the sheet-shaped optical functional film 3 shown in [s15] to [s18] is attached to the panel member 5. The rear end portion 31 of the sheet-shaped optical functional film 3 is cut off by sandwiching it between the driving roller 51 that is overlapped and rotated and the driven roller 52 that is interlocked with the driving roller 51, and the sheet-shaped optical functional film 3 is attached to the panel member 5. It is a step that constitutes a method of manufacturing the optical display device 6.

An outline of the other embodiment of the present method is as follows.
5A to FIG. 5C and FIG. 6 show that the tip portion 32 of the sheet-shaped optical functional film 3 is placed at the panel bonding position 100 while peeling the sheet-shaped optical functional film 3 from the carrier film 2 shown in [s10] to [s12]. The drive roller 51 which is rotated at the same time as the leading end portion 32 of the sheet-shaped optical functional film 3 is indexed to the panel member 5 standing by at the panel bonding position 100 shown in [s8] is started to start the sheet-shaped sheet. At the same time when the rear end portion 31 of the optical function film 3 is detected, the rotating drive roller 51 starts the closing operation. Next, through [s15], the driven roller 52, which has a higher closing speed than the driving roller 51 which is simultaneously closed as shown in [s14], comes into contact with the panel member 5 first, and is shown in [s16] to [s18]. The front end portion 32 of the sheet-shaped optical functional film 3 is overlapped with the panel member 5, and is sandwiched between the rotating driving roller 51 and the driven roller 52 to cut the rear end portion 31 of the sheet-shaped optical functional film 3 to form a sheet-shaped optical functional film. This is a step of constituting a method for manufacturing the optical display device 6 by laminating the film 3 on the panel member 5.

  In two embodiments of this method, the application roller that is brought into contact with the inner panel member 5 of the application roller shown in [s8 ′] of FIG. 4 of one embodiment in advance is the driven roller 52, and therefore, the driven roller 52 and The driving roller 51 is a sticking roller that comes into contact with the leading end portion 32 of the sheet-shaped optical functional film 3 afterward as shown in “Starting the closing operation of the optical functional film side sticking roller” in [s14] so as to cooperate with each other. However, in the other embodiment, as is apparent from the fact that there is no step corresponding to [s8 ′] in FIG. 4 after [s8] in FIG. 6, the driven roller 52 is first closed to start the panel operation. There is no step of contacting the member 5 in advance. The cooperation between the driving roller 51 and the driven roller 52 shown in "Starting of closing operation of sticking roller" in [s14] is to start at substantially the same time. The driven roller 52 is brought into contact with the panel member 5 first by increasing the closing speed. In either case, highly accurate closing operation as in the prior application method of FIGS. 2A to 2C is not required.

  By the way, the sticking start speed v2 in [s12] of FIG. 4 or FIG. 6 is the feeding speed of the sheet-shaped optical functional film 3 when the front end portion 32 of the sheet-shaped optical functional film 3 is superposed on the panel member 5, and is sent out. While it can be set to the same speed as the speed v1, it is preferably set to be slower than the delivery speed v1 by the time the tip portion 32 of the sheet-shaped optical functional film 3 reaches a predetermined position 300 before the panel bonding position, that is, This is to bring the state of v2 <v1.

  The sticking start speed v2 of the sheet-shaped optical functional film 3 that is sandwiched by the pair of sticking rollers 51 and 52 that are closed and is sent at the same time is shown in FIG. 2B (f1), FIG. 3B (g1), and FIG. 5B (f1). As described above, since the leading end portion 32 of the sheet-shaped optical functional film 3 is superposed on the panel member 5 without stopping, it is more preferably less than 10 mm / sec. Further, it is preferable that the pair of sticking rollers 51 and 52 rotate at the same speed as the sticking start speed v2 of the sheet-shaped optical functional film 3 before the sheet-shaped optical functional film 3 and the panel member 5 are nipped. By rotating the sticking rollers 51 and 52 at the same speed v2 before sandwiching, the speed difference at the moment when the sticking rollers 51 and 52 come into contact with the sheet-shaped optical function film 3 and the panel member 5 hardly occurs, and sticking accuracy can be further improved.

  As shown in FIG. 2B (f1), FIG. 3B (g1), and FIG. 5B (f1), in the camera detection device 70 of the two-point movement type, the leading end 32 of the sheet-shaped optical functional film 3 reaches a predetermined position 300. A step E of moving backward by δ from a position corresponding to the reading of the rear end 31 to a position corresponding to the stop position 200 of the leading end 32 of the sheet-shaped optical functional film 3 to be read.

  2C (g1), 3C (h1), and 5C (h1) show that the leading end portion 32 of the sheet-shaped optical functional film 3 is overlapped on the bonding surface of the panel member 5 without stopping and at the same time, the closing operation is performed. The step F in which the sheet-shaped optical functional film 3 and the panel member are nipped by the pair of rotating sticking rollers 51 and 52 and further stuck at the sticking start speed v2 is shown. When the front end portion 32 of the sheet-shaped optical function film 3 is sandwiched by a pair of sticking rollers 51 and 52 that operate to close, and when the bonding between the sheet-shaped optical function film 3 and the panel member 5 reaches a predetermined length λ, it is closed. The sticking speed of the pair of sticking rollers 51 and 52 that operate is switched from the sticking start speed v2 shown in [s17] of FIG. 4 or FIG. 6 to the sticking operation speed v3 that is higher than the sticking start speed v2. .. Thereby, the productivity of the step of bonding the sheet-shaped optical functional film 3 and the panel member 5 is further enhanced.

  In the embodiment of this method, as in the case of the prior application method, the relationship among the delivery speed v1, the sticking start speed v2, and the sticking operation speed v3 is as follows.

The delivery speed at which the front end portion 32 of the sheet-shaped optical functional film 3 is delivered from the stop position 200 of the peeling body 60 toward the panel bonding position 100 is v1. Preferably, the delivery speed v1 of the sheet-shaped optical functional film 3 is maintained until the tip portion 32 reaches a predetermined position 300 between the stop position 200 on the peeling body 60 and the panel bonding position 100, and the predetermined position 300. Immediately before, the sticking start speed is switched to v2. More preferably, the sticking start speed v2 corresponding to the sticking speed of the pair of sticking rollers 51, 52 which are closed is such that the sticking distance between the sheet-like optical functional film 3 and the panel member 5 is a predetermined length λ. It is maintained until it reaches the predetermined length λ, and when it reaches the predetermined length λ, it is further switched to the bonding operation speed v3. Therefore, the speeds of v1 to v3 are
v1 ≧ v2, v3 >> v1
From the viewpoint of productivity, v1> v2, v3 >> v1
It is more preferable to have the relationship of

  2C (h1), 3C (i1), and 5C (i1) show that the next front end portion 32 'of the sheet-shaped optical functional film 3 supported on the carrier film 2 bonded to the next panel member 5 is When reaching the stop position 200 on the peeling body 60, the next leading end portion 32 'of the sheet-like optical functional film 3 whose feeding is stopped by the feeding device 8 shown in FIG. The step G of cutting the edges of the trailing end portion 31 of the preceding sheet-shaped optical functional film 3 which is pasted and conveyed to the panel member 5 at the laminating operation speed v3 by the laminating rollers 51 and 52 is shown.

  This is because while the bonding operation of the sheet-shaped optical functional film 3 and the panel member 5 by the pair of sticking rollers 51 and 52 which is closed and rotated in [s18] of FIG. 4 or 6 is continued, The winding operation of the carrier film 2 is stopped by the feeding device 8 shown to stop the next leading end 32 ′ of the sheet-shaped optical function film 3 at the stop position 200 on the peeling body 60, and the reverse tension caused thereby causes the leading edge 32 ′ to move forward. This is a step of cutting the trailing end 31 and the next leading end 32 '.

  2C (i1), 3C (j1), and 5C (j1) are the final steps of the embodiment of the present invention. This is shown in [s19] and [s20] of FIG. 4 or FIG. 6, in which the pair of sticking rollers 51, 52 which are closed and rotated rotate at the sticking operation speed v3, and the preceding sheet-like optical The final step H of switching the pair of sticking rollers 51, 52 that closes to open when the sticking of the sheet-shaped optical function film 3 and the panel member 5 as a functional film-attached panel member is completed.

In the final step H, the position and the angle of the leading end portion 32 'of the next sheet-shaped optical functional film 3'stopped at the stop position 200 are confirmed by the two-point moving type camera detection device 70, while the panel bonding position. The pair of sticking rollers 51 and 52 located at 100 are open, and the next panel member 5 ′ stands by at the pre-sticking position 600 and is conveyed to the panel sticking position 100 of the opened sticking rollers 51 and 52. In the preparatory step described above, each step of adhering the next sheet-shaped optical functional film 3 ′ and the next panel member 5 ′ is subsequently started.

2 Carrier film 3 Sheet-shaped optical functional film 3'Next sheet-shaped optical functional film 31 Rear end portion of sheet-shaped optical functional film 32 Tip portion of sheet-shaped optical functional film 32 'Tip portion of next sheet-shaped optical functional film 4 Adhesive layer 5 Panel member 5'Next panel member

10 Device for Manufacturing Optical Display Device by RTP Method 40 Opposite Side of Adhesive Layer Surface of Tip of Sheet-like Optical Functional Film 50 Opposite Side of Sheet-like Optical Functional Film of Panel Member to Be Bonded 51 Drive Roller Adhering roller 52 Adhering roller of driven roller 53 Pair of adhering roller 60 Peeling body 61 Top of peeling body 70 Camera detection device 8 Sheet-shaped optical function film feeding device 80 Forward / reverse feed roller 81 Forward / reverse feed roller 82 Dancer roller 90 Adsorption Conveying means 91 Detecting means

100 Panel bonding position 200 Stop position 300 Predetermined position 500 Tip position 600 Position before bonding

800 control device 802 storage device

Claims (9)

A strip shape including a carrier film, a pressure-sensitive adhesive layer formed on one surface of the carrier film, and a plurality of sheet-shaped optical functional films continuously supported on the carrier film via the pressure-sensitive adhesive layer. While exfoliating the sheet-shaped optical functional film together with the pressure-sensitive adhesive layer from the carrier film of the optical film laminate, the tip end of the sheet-shaped optical functional film is sent to a panel laminating position and conveyed to the panel laminating position. The sheet-shaped optical function film and the panel member are sandwiched by a pair of sticking rollers which are overlapped with the above-mentioned panel member and which are opened and closed in a direction perpendicular to the conveying direction of the panel member, and the optical members are optically bonded to each other. A method of manufacturing a display device, comprising:
The pair of affixing rollers are pressed from the opposite side of the surface of the pressure-sensitive adhesive layer at the tip of the sheet-shaped optical functional film, and are driven and rotated integrally with the panel member, and the sheet-shaped optical functional film. By being pressed from the opposite side of the surface of the panel member to be bonded together, a driven roller that rotates in conjunction with the driving roller,
The tip of the sheet-shaped optical functional film supported on the carrier film, on the peeling body without protruding from the top of the peeling body having a top arranged at a position facing the panel bonding position Stopping at a stop position,
A step of conveying the panel member to the panel bonding position where the pair of bonding rollers are opened, stopping, and waiting;
Prior to the drive roller contacting the sheet-shaped optical functional film, the step of contacting the driven roller to the opposite side of the surface of the panel member on which the sheet-shaped optical functional film is stuck,
The panel member that waits for the leading end of the sheet-shaped optical functional film while peeling the sheet-shaped optical functional film together with the pressure-sensitive adhesive layer by conveying the carrier film while being folded back at the top of the peeling body. So as to be stacked without stopping at, a step of sending from the stop position on the peeling body toward the panel bonding position,
By detecting that the leading end of the sheet-shaped optical functional film sent without stopping reaches a predetermined position between the stop position on the peelable body and the panel bonding position, the sheet-shaped optical film is detected. A step of switching and closing the driving roller in an open state before the front end of the functional film overlaps with the panel member waiting at the panel bonding position;
At the panel laminating position, the tip end portion of the sheet-shaped optical functional film is superposed on the panel member in which the driven roller is brought into contact with the side opposite to the surface on which the sheet-shaped optical functional film is laminated, and at the same time, the closing operation is performed. The sheet-shaped optical functional film and the panel member which are pressed by the driving roller from the side opposite to the surface of the pressure-sensitive adhesive layer at the front end of the sheet-shaped optical functional film, are interlocked with the driven roller, and are fed without stopping. Sandwiching and pasting together,
The next leading end of the sheet-shaped optical functional film stopped when the next leading end of the sheet-shaped optical functional film supported on the carrier film reaches the stop position on the peeling body, And a step of cutting the edges of the sheet-shaped optical functional film that is pasted and conveyed to the panel member by the rotation of the pair of sticking rollers that are closed and rotated,
A method of manufacturing an optical display device, comprising the step of opening the pair of sticking rollers after the sheet-shaped optical functional film and the panel member have been stuck together by the pair of sticking rollers.
The step of bringing the driven roller into contact with the surface of the panel member on the opposite side of the surface on which the sheet-shaped optical functional film is bonded, the tip portion of the sheet-shaped optical functional film sent without stopping is the peeling. The method for manufacturing an optical display device according to claim 1, wherein the method is performed before detecting that a predetermined position between the stop position on the body and the panel bonding position is reached.
The step of bringing the driven roller into contact with the surface of the panel member on the opposite side of the surface on which the sheet-shaped optical functional film is bonded, the tip portion of the sheet-shaped optical functional film sent without stopping is the peeling. The method for manufacturing an optical display device according to claim 1, wherein the method is performed after detecting that a predetermined position between the stop position on the body and the panel bonding position is reached.
The drive roller is configured such that the sheet-shaped optical function film when the front end portion of the sheet-shaped optical function film is superposed on the panel member before the sheet-shaped optical function film and the panel member are sandwiched between the driven roller and the driven roller. The method for manufacturing an optical display device according to claim 1, wherein the optical display device is rotated at the same speed as the feeding speed of the functional film.
By monitoring the feed distance of the rear end of the sheet-shaped optical functional film, the front end of the sheet-shaped optical functional film is at a predetermined position from the stop position on the peeling body to the panel bonding position. The method for manufacturing the optical display device according to claim 1, wherein the arrival is detected.
The sticking start speed v2 of the sheet-shaped optical functional film, which is superposed on the panel member at the front end portion of the sheet-shaped optical functional film, and is sent at the same time when the driving roller holds the driven roller, is less than 10 mm / sec. A method for manufacturing the optical display device according to any one of 1 to 5.
When the sheet-shaped optical function film sandwiched between the drive roller and the driven roller and the panel member have reached a predetermined length, the bonding speed of the drive roller is changed from the bonding start speed v2. The method for manufacturing an optical display device according to claim 6, further comprising a step of switching to a laminating operation speed v3 which is higher than a laminating start speed v2 and further laminating the sheet-shaped optical functional film and the panel member.
The leading end portion of the sheet-shaped optical functional film is sent out from the stop position on the peeling body toward the panel bonding position at a delivery speed v1 adjusted to a speed higher than the sticking start speed v2, Before reaching a predetermined position between the stop position and the panel laminating position, the feeding speed v1 is switched to the laminating start speed v2, and the leading end portion is superposed on the panel member waiting without stopping. A method for manufacturing an optical display device according to claim 6, comprising:
Before reaching the predetermined position between the delivery speed v1 for sending the tip portion from the stop position on the peeling body toward the panel bonding position, and the stop speed on the peeling body to the panel bonding position. And the sticking start speed v2 that can be switched from the delivery speed v1 and the sticking speed of the drive roller when the sticking of the sheet-shaped optical functional film and the panel member reaches a predetermined length. The laminating operation speed v3 that can be switched from v2 is
v1 ≧ v2, v3 >> v1
9. The method for manufacturing an optical display device according to claim 8, wherein the relations are satisfied.

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