JP2019120778A - Conveying device for conveying long optical film having cuts, and continuous manufacturing system of optical display panel - Google Patents

Abstract

To prevent a turning-up of an optical film from a cut in a state of being passed to a roller during transport-suspension in a case of conveying an optical film in which the cut is formed on a conveying device having a roller.SOLUTION: The conveying device for conveying a long optical film with a cut includes a conveying direction change roller with which an optical film is bridged at a predetermined angle range by releasing the film on an inner side, a cover having a surface along the curved surface of the conveying direction change roller with respect to the conveying direction change roller arranged by providing a predetermined interval across the optical film, a cover drive unit for moving the cover to the conveying direction change roller side, and a cover drive control unit 48 for abutting a portion and the cover that is being conveyed to the conveying direction change roller of the optical film by moving the cover to the conveying direction change roller side, during the transport of the optical film allowed to wait by providing a predetermined interval when the transport of the optical film is suspended.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a conveying device for conveying a long optical film having incisions, and a continuous manufacturing system of an optical display panel.

  In the laminated film having a multilayer structure, for example, a so-called half cut method is known in which the laminated film is cut without cutting the outermost layer separator. In this half cut, it is referred to as bridging (holding) with the cut point (cut) outside with a roller, and "turning over" of the laminated film from the cut (or peeling at the cut end, floating at the cut end). Sometimes occurs). This "flip" occurs notably when the cut line of the laminated film is in the position held by the roller when the conveyance line of the laminated film is stopped.

  Patent Document 1 discloses a peeling prevention device capable of preventing "flip-over" which occurs particularly when converting the transport direction by 90 ° or more while transporting an optical film.

JP, 2009-186996, A

  In the case of the peeling prevention device shown in FIG. 7 of Patent Document 1, since there is a gap between the pressing member and the optical film, there is a concern that the optical film may come off and contact the pressing member when the film conveyance is stopped. . If transport is resumed with the optical film being flipped and in contact with the pressing member, the optical film is flipped while contacting the pressing member, and the subsequent optical members are also flipped. Furthermore, the optical film curled up in the gap is clogged, and the optical film can not be transported.

  In the case of the peeling prevention device shown in FIG. 8 of Patent Document 1, the optical film is conveyed while being pinched by a plurality of small diameter rollers, but if the incision is stopped in the gap between the small diameter rollers There is a concern that it will If the optical film is flipped and conveyance is started as it is, contact with the small diameter roller further advances the flipping.

  In the case of the peeling prevention device shown in FIG. 9 of Patent Document 1, since the optical film is sandwiched between the annular sheets, curling does not occur as in the configuration of FIGS. 7 and 8, but it becomes a complicated device. . In addition, even when the film transport line is not stopped, the annular sheet is always in contact with the optical film on the surface, which may cause the optical film to be rubbed with the annular sheet.

  In the case of the peeling prevention device shown in FIG. 10 of Patent Document 1, since the optical film can be physically held in a noncontact manner by blowing air, the problem of curling as shown in FIGS. Although such a rubbing problem does not occur, it also becomes a complicated device. In addition, blowing air may disturb the air flow in the manufacturing apparatus and may stir the foreign matter.

Therefore, it is an object of the present invention to cause the optical film to be flipped from the incision which is in the state of being stretched over the roller when the conveyance is stopped when the optical film having the incisions is conveyed by the conveying device having the roller. It is providing the conveying apparatus which can prevent.
Another object of the present invention is to provide a continuous manufacturing system of an optical display panel which can continuously produce an optical display panel without causing a turnout from the cut of the optical film when the transportation is stopped.

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

The present invention is a conveying device for conveying a long optical film having a notch (S) in the width direction which is a direction orthogonal to the longitudinal direction,
The long optical film has at least an optical functional film and a release film laminated via the optical functional film and the pressure-sensitive adhesive layer, and a notch is formed in the optical film excluding the release film. Yes,
A transport direction changing roller in which the long optical film is stretched in a predetermined angle range with the release film inside;
A surface (along the curved surface of the conveyance direction changing roller) is disposed at a predetermined distance (D1) with respect to the conveyance direction changing roller with the long optical film interposed therebetween (without contact therewith). A cover having an inner curved surface);
A cover drive unit for moving the cover toward the transport direction changing roller;
During conveyance of the long optical film, the predetermined interval (D1) is provided and the standby (standby position P1) is performed, and when conveyance of the long optical film is stopped, the cover is changed by the conveyance direction changing roller Move to the side (contact position P2) to bring the part (roller contact part) of the long optical film across the transport direction changing roller into contact with the cover (the inner curved surface thereof) And a cover drive control unit.

The “predetermined angle range” is a range of the angle θ (see FIG. 3) formed by the optical film on the upstream side and the optical film on the downstream side about the transport direction changing roller, and is larger than 0 ° and 180 ° It may be the following. The angle θ of 0 ° means that the upstream optical film and the downstream optical film are in a straight line, and the angle θ of 180 ° is that the transport direction of the upstream optical film and the transport direction of the downstream optical film are parallel to each other It means to be reverse. The angle θ may exceed 180 ° depending on the arrangement of the guide rollers. The angle θ corresponds to the change range of the transport direction.
The "predetermined distance (D1)" is at least a length greater than the thickness of the long optical film, and is defined as the distance from the outer surface (P3) of the conveyance direction changing roller to the inner curved surface (P1) of the cover . The “predetermined distance (D1)” is, for example, 1.1 times or more and 100 times or less the thickness of the long optical film. In FIG. 2A, when the predetermined distance D1 and the length D2 from the standby position P1 to the contact position P2 are used, the thickness of the optical film may be equal to or larger than (D1-D2). When the optical film is pressed against the roller by the cover, the contact position P2 is preferably set to such an extent that deformation of the optical film and sticking out of the pressure-sensitive adhesive layer do not occur.

The cover drive control unit of the above invention
If it is determined that the part (roller contact part) of the long optical film straddling the transfer direction changing roller is judged to have the cut when the long optical film stops to be conveyed. The cover driving unit may be controlled so as to move to the transport direction changing roller side.

The conveyance direction changing roller according to the invention may be a guide roller fixed to the conveyance device except that it rotates around an axis orthogonal to the conveyance direction. The guide roller may be installed at the fixing portion.
The conveyance direction changing roller according to the invention may be a dancer roller movable vertically or horizontally with respect to the conveyance device. The present invention may have a drive unit for moving the dancer roller.

  In the above invention, the conveyance direction changing roller (dancer roller and / or guide roller), the cover, and the cover driving unit are configured as one or more units, and the unit is a conveyance path of the long optical film. A path length changing unit may be configured to change the path length, which is the length of the road. The path length change unit may be referred to as an accumulation device.

  According to the invention, the cover is moved to the transport direction changing roller side when the transport is stopped, and the portion (roller contact portion) spanned by the transport direction changing roller of the optical film is brought into contact with the inner curved surface of the cover. Thus, it is possible to preferably prevent the occurrence of curling of the optical film from the incisions.

In the continuous production system of optical display panels according to another invention, a first optical film having at least an optical functional film is bonded to a first surface of an optical cell, and / or a second optical film having at least an optical functional film is optical A continuous manufacturing apparatus for manufacturing an optical display panel by bonding to the second surface of the cell;
And the transport device.

In the above invention, the manufacturing apparatus is
A sheet-like first optical film obtained by cutting the first long optical film while leaving the long first release film while feeding the first long optical film from the first optical film roll is conveyed Sticking to the first surface of the optical cell, or sticking a sheet-like first optical film to the first surface of the optical cell,
And / or a sheet-like second optical film obtained by cutting the second long optical film while leaving the second long release film while feeding the second long optical film from the second optical film roll, The sheet is pasted on the second surface of the optical cell to be conveyed such that the optical axis of the first optical film and the optical axis of the second optical film form a predetermined angular arrangement, or a sheet-like second The optical film may be attached to the second surface of the optical cell such that the optical axis of the first optical film and the optical axis of the second optical film form a predetermined angular arrangement.

  According to the above-described invention, it is possible to continuously produce the optical display panel without the occurrence of the turning-off from the cut of the optical film when the conveyance is stopped.

In the present invention, in the “optical film roll”, a long release film and a long optical film (pressure-sensitive adhesive layer, optical functional film and surface protective film) are laminated in this order to form a roll. There is.
"Roll-to-panel method" cuts the pressure-sensitive adhesive layer, the optical function film and the surface protection film in the width direction while leaving the release film from the release film and the long optical film drawn from the optical film roll This method is a method of peeling a long release film from a sheet-like optical film obtained by half-cutting and cutting, and bonding the sheet-like optical film to an optical cell through the exposed pressure-sensitive adhesive layer.

On the other hand, there is a "sheet-to-panel method" as a bonding method of an optical film different from the roll-to-panel method. The “sheet-to-panel method” is a sheet-like optical film previously made into a sheet-like form, exposed through a pressure-sensitive adhesive layer exposed by peeling a sheet-like release film or a long release film. It is a method of bonding to an optical cell.
The “cut-in optical film roll” is constructed by rolling a sheet-like optical film (pressure-sensitive adhesive layer, optical functional film and surface protection film) side by side in a longitudinal direction on a long release film and forming a roll There is a role.

The schematic which showed an example of the continuous manufacturing system of the optical display panel. The schematic which showed an example of the continuous manufacturing system of the optical display panel. The schematic of the cover in a standby position. The schematic of the cover which moved to the contact | abutting position. Diagram for explaining the angle θ

Hereinafter, although the continuous manufacturing system of an optical display panel is more concretely demonstrated, referring FIG. 1A, 1B, 2A, 2B, this invention is not limited to the aspect of this embodiment.
The optical display panel is described as a liquid crystal display panel, the optical cell as a liquid crystal cell, and the optical film as a polarizing film.

  The continuous manufacturing system of the liquid crystal display panel has a continuous manufacturing apparatus 100. The continuous production apparatus 100 is a first sheet obtained by cutting and processing the first elongated polarizing film 11 while feeding out the first elongated release film 12 and the first elongated polarizing film 11 from the first optical film roll R1. The leaf-like polarizing film 111 is attached to the first surface 5 a of the liquid crystal cell 5. In addition, the continuous manufacturing apparatus 100 is obtained by cutting and processing the second elongated polarizing film 21 while respectively feeding out the second elongated release film 22 and the second elongated polarizing film 21 from the second optical film roll R2. The second sheet-like polarizing film 211 is attached to the second surface 5 b of the liquid crystal cell 5 so that the absorption axis of the first sheet-like polarizing film 111 and the absorption axis of the second sheet-like polarizing film 211 are orthogonal to each other. The liquid crystal display panel Y is manufactured.

  The continuous manufacturing system of the liquid crystal display panel is arranged in a series of panel transfer devices 120 in which the continuous manufacturing device 100 transfers the liquid crystal cell 5 and the liquid crystal display panel Y. The line of the panel transport device 120 is drawn straight at x, but is not limited to straight lines.

(Optical film roll)
As an optical film roll formed by winding a long polarizing film, for example, in the form of a continuous web having (1) a releasing film and a long polarizing film including a pressure-sensitive adhesive layer formed on the releasing film. What rolled the elongate optical film laminated body in roll shape is mentioned. In this case, in order to form a sheet-like polarizing film (sheet piece) from the long polarizing film, the continuous production system of the liquid crystal display panel leaves the release film and includes the long polarizing film (including the pressure-sensitive adhesive layer). It has a cutting device which cuts (half cuts) (forms a cut) in a direction orthogonal to the feed direction of the release film at a predetermined interval.
Further, as an optical film roll, for example, (2) a sheet-like polarizing film (including a pressure-sensitive adhesive layer) adjacent to each other via a slit in a direction orthogonal to the release film and the release film on the release film (A so-called cut polarizing film roll) obtained by winding a long optical film laminate having the above structure into a roll.

The first optical film roll R1 shown in FIG. 1A has an absorption parallel to the feeding direction (longitudinal direction) formed on the first long release film 12 and the first long release film 12 via the adhesive layer. The first elongated optical film laminate 10 having a first elongated polarizing film (including the adhesive layer thereof) 11 having an axis is wound in a roll.
The second optical film roll R2 shown in FIG. 1B has an absorption parallel to the feeding direction (longitudinal direction) formed on the second long release film 22 and the second long release film 22 via the adhesive layer. The second elongated optical film laminate 20 having the second elongated polarizing film (including the pressure-sensitive adhesive layer) 21 having an axis is wound in a roll.

The first and second long polarizing films 11 and 21 are, for example, a polarizer (about 5 to 80 μm in thickness) and a polarizer protective film (about 1 to 500 μm in thickness generally) on one side or both sides of the polarizer. Degree) is formed without adhesives or adhesives.
As other films constituting the first and second long polarizing films 11 and 21, for example, retardation films (generally 10 to 200 μm in thickness), viewing angle compensation films, brightness enhancement films, surface protection films, etc. It can be mentioned. The thickness of the first and second long polarizing films 11 and 21 may be, for example, in the range of 10 μm to 500 μm.

  The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer of the first and second long polarizing films 11 and 21 is not particularly limited, and examples thereof include acrylic pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, and urethane-based pressure-sensitive adhesives. The thickness of the pressure-sensitive adhesive layer is preferably, for example, in the range of 10 to 50 μm. For the first and second release films 12, 22, for example, conventionally known films such as plastic films (for example, polyethylene terephthalate films, polyolefin films and the like) can be used. If necessary, suitable ones according to the prior art may be used, such as those coated with an appropriate release agent such as silicones, long chain alkyls, fluorines and molybdenum sulfide.

(Liquid crystal display panel)
The liquid crystal display panel Y has at least a polarizing film formed on one side or both sides of the liquid crystal cell 5, and a drive circuit is incorporated as necessary. The liquid crystal cell 5 may be of any type such as vertical alignment (VA) type or in-plane switching (IPS) type. The liquid crystal cell 5 has a configuration in which a liquid crystal layer is sealed between a pair of substrates (a first substrate 5a and a second substrate 5b) which are disposed to face each other.

(Continuous manufacturing equipment)
The continuous manufacturing apparatus 100 includes a first release film transfer device 110, a first attaching unit 80, a second release film transfer device 210, and a second attachment unit 280.

As shown to FIG. 1A, the 1st release film conveyance apparatus 110 is the 1st optical film roll R1, the 1st elongate release film 12, and the 1st elongate polarizing film 11 (1st elongate optical film laminated body 10 ) And transport the sheet to the first sticking section 80.
In the present embodiment, the first release film conveyance device 110 includes a first cutting unit 20, a first path length changing unit 40, a first peeling unit 50, and a first winding unit 61.

The first cutting section 30 fixes the first long optical film laminate 10 from the first long mold release film 12 side with the first suction section 30 a while leaving the first long mold release film 12. The first long polarizing film (including the pressure-sensitive adhesive layer) 11 is cut in the width direction, and the first sheet-like polarizing film 111 is formed on the first long release film 12.
Examples of the first cutting unit 30 include a cutter and a laser device. The first adsorption unit 30a may be, for example, an adsorption plate which has a large number of holes connected to a vacuum pump and can suction air from the holes under negative pressure.

The first path length changing unit 40 has a plurality of conveyance direction changing rollers, first, second and third covers 41, 42 and 43 and first, second and third cover driving parts 45, 46 and 47. Is configured.
The plurality of transport direction changing rollers are a guide roller (31, 37) on which the first elongated polarizing film 11 (first elongated optical film laminate 10) is stretched with the first elongated release film 12 on the outside. The first elongated polarizing film 10 (first elongated optical film laminate 10) with the first and second dancer rollers 33 and 35 movable up and down and the first elongated release film 12 inside First, second and third guide rollers 32, 34 and 36.
The first, second and third covers 41, 42 and 43 and the first, second and third cover driving parts 45 and 46 correspond to the first, second and third guide rollers 32, 34 and 36, respectively. , 47 are arranged. The operation of the first, second and third covers 41, 42 and 43 will be described later.

The first peeling section 50 folds the first long mold release film 12 inside at the front end thereof and peels the first sheet-like polarizing film 111 from the first long mold release film 12. The peeled first sheet-like polarizing film 111 is supplied to the first attaching unit 80.
In this embodiment, although the sharp knife edge part is used for the front-end | tip part as the 1st peeling part 50, it is not limited to this.

  The first winding unit 61 winds up the first long release film 12 from which the first sheet-like polarizing film 111 is peeled off. The first winding unit 61 may be configured by an automatic rotation roller.

The first sticking section 80 is a first sheet in which the first long mold release film 12 is peeled off by the first peeling section 50 from the one surface (first surface 5 a) of the liquid crystal cell 5 transported by the panel transport device 120. The leaf-like polarizing film 111 is attached via the adhesive layer.
In the present embodiment, the first sticking section 80 is configured of a first sticking roller 81 and a first drive roller 82.

As shown in FIG. 1B, various devices for attaching the second sheet-like polarizing film 211 to the other surface (second surface 5b) of the liquid crystal cell 5 can use various components, devices, etc. described above. it can.
The second release film transport device 210 performs second sticking while drawing out the second long release film 22 and the second long polarizing film 21 (second long optical film laminate 20) from the second optical film roll R2. Transport to the unit 280.
In the present embodiment, the second release film transport apparatus 210 includes a second cutting unit 230, a second path length changing unit 240, a second peeling unit 250, and a second winding unit 261.
The second release film transfer device 210 can be configured by the same device as the first release film transfer device 110, and the second attachment unit 280 can be configured by the same device as the first attachment unit 80.
For example, the second cutting unit 230 and the second suction unit 230a can be configured by the same devices as the first cutting unit 30 and the second suction unit 30a. The second path length change unit 240 can be configured by an apparatus similar to the first path length change unit 40. The second winding unit 261 can be configured by an apparatus similar to the first winding unit 61. The second attachment roller 281 and the second drive roller 282 can be configured by the same mechanism as the first attachment roller 81 and the first drive roller 82.

  The panel transport device 120 is a series of transport devices for transporting the liquid crystal display panel Y in which the first and second sheet-like polarizing films 111 and 211 are attached to both surfaces of the liquid crystal cell 5 and the liquid crystal cell 5. The panel conveyance device 120 includes, for example, a conveyance roller, a suction plate, and the like. In this embodiment, the panel transport device 120 includes a pivoting mechanism for horizontally rotating the liquid crystal cell 5 to which the first sheet-like polarizing film 111 is attached by 90 degrees, and liquid crystal to which the first sheet-like polarizing film 111 is attached. An inversion mechanism for inverting the cell 5 up and down is provided.

(Operation of cover)
FIG. 2A shows a state in which the first, second and third covers 41, 42, 43 are on standby at the standby position P1.
A first cover 41 is disposed above the first guide roller 32 at a predetermined interval D1, a second cover is disposed above the second guide roller 34 at a predetermined interval D1, and a predetermined interval D1 above the third guide roller 36. And the third cover 43 is placed.

  The first cover 41 has the same length as the roller longitudinal direction length of the first guide roller 32 which is a conveyance direction changing roller, and has an inner curved surface 41a along the curved surface of the roller. In FIG. 2A (side view), both ends of the cover on the extension of the inner curved surface 41a have a shape that is curved toward the cover outer side. The first cover 41 is connected to the first cover driving unit 45, and the driving operation of the first cover driving unit 45 causes the first cover 41 to move from the standby position P1 to the abutting position P2 on the first guide roller 32 side. It is configured to be able to move back and forth between. By moving to the contact position P2, the first cover 41 presses the first sheet-like polarizing film 111 to the first guide roller 32 side, and it is possible to preferably prevent the peeling from the incision S.

The second cover 42 and the third cover 43 also have the same configuration as the first cover 41. The second cover 42 is connected to the second cover drive unit 46, and the drive operation of the second cover drive unit 46 causes the second cover 42 to move from the standby position P1 to the contact position P2 on the second guide roller 34 side. It is configured to be able to move back and forth. At the contact position P2, the second cover 42 presses the first sheet-like polarizing film 111 to the second guide roller 34 side.
The third cover 43 is connected to the third cover drive unit 47, and the drive operation of the third cover drive unit 47 causes the third cover 43 to move from the standby position P1 to the contact position P2 on the third guide roller 36 side. It is configured to be able to move back and forth. At the contact position P2, the third cover 43 presses the first sheet-like polarizing film 111 to the third guide roller 36 side.

  Examples of the first, second, and third cover drive units 45, 46, 47 include, but are not limited to, linear actuators such as an air cylinder, a hydraulic cylinder, and an electric cylinder.

  The cover drive control unit 48 controls the first, second, and third guide rollers 32, 34, and 36 of the first long optical film stack 10 when the conveyance of the first long optical film stack 10 is stopped. If it is determined that the first, second, and third roller contact portions 321, 341, and 361 cut across the conveyance direction changing rollers have cuts, the first, second, and third covers 41, 42, and 43 can be used. The first, second and third cover drive units 45, 46 and 47 are controlled so as to move to the first, second and third guide rollers 32, 34 and 36 side.

The cover drive control unit 48 may determine whether or not the incision S is positioned at the first, second, and third roller contact portions 321, 341, and 361, based on the position data of the incision S acquired in advance. .
The position data of the cut line S may be obtained from the cut position data when the first elongated polarizing film 11 is cut in the width direction, and the cut line position picked up by the imaging unit after the cut line S is formed is specified It may be obtained from image data to be obtained, or may be obtained from detection data obtained by detecting the position of the incision with an optical sensor.
In addition, if it is an optical film roll which did not have a 1st cutting part but wound the 1st elongate polarizing film with a cut in roll shape, the storage medium which memorize | stores the positional data of a cut (local PC or a server) Of each memory, a wireless tag, etc.) or code data (QR code (registered trademark), bar code, etc.).

The cover drive control unit 48 images the image data obtained by imaging at least the first, second, and third roller contact portions 321, 341, and 361 when the conveyance of the first long optical film laminate 10 is stopped. The cover may be moved as long as the incision S is located at the first, second and third roller contact portions 321, 341 and 361 by analysis.
For stopping the conveyance of the first long optical film laminate 10, for example, the conveyance stop by the operation of the operator, the conveyance stop when sticking the first sheet-like polarizing film 111 by the first attaching section 80 to the liquid crystal cell 5 , And the transfer stop at the end of the work.
The cover drive control unit 48 may receive a stop signal for film transport from a system control unit (not shown), and control to move the cover from the standby position P1 to the contact position P2 based on the stop signal.

  If the intervals between the incisions are constant, the lengths in the conveyance direction of the first sheet-like polarizing film 111 are all the same in the attaching process by the first attaching unit 80, so the incision S is the first, second, third It is previously known whether the roller contact portions 321, 341, 361 are located. In this case, the minimum necessary cover may be moved. As shown in FIG. 2B, since the incisions S1 and S2 are located at the first and third roller contact portions 321 and 361, only the first and third covers 41 and 43 are moved to the abutting position P2.

  In the so-called skip cut method in which the cut position is changed in consideration of the defects present in the first long polarizing film 10, there are places where the gap between the cuts becomes narrow, and the cut is located at each roller contact portion It does not happen. Even in this case, the cover drive control unit 48 can determine from the cutting position data (the position data of the cut) whether or not the incision is positioned at the roller contact portion at the timing of stopping the film conveyance. it can.

The cover drive control unit 48 moves the moved cover to the standby position P1 before the transportation of the first long optical film stack 10 is resumed (or started).
As resumption of conveyance of the first long optical film laminate 10, for example, conveyance resumption by the operation of the operator, conveyance resumption at the time of sticking the first sheet-like polarizing film 111 by the first sticking section 80 to the liquid crystal cell 5 Are illustrated.
The cover drive control unit 48 may be configured to receive a film transport restart signal from a system control unit (not shown), return the cover from the contact position P2 to the standby position P1, and then resume film transport.
The system control unit may be configured to receive a signal indicating that all the covers are located at the standby position P2 and resume film transport. Alternatively, the film transport may be resumed after a predetermined time has elapsed since the start of the cover movement.

The second path length changing unit 240 includes a plurality of conveyance direction changing rollers, fourth, fifth, sixth covers 241, 242, 243 and fourth, fifth, sixth cover driving units (not shown). Configured
The plurality of transport direction changing rollers are a guide roller (231, 237) on which the second elongated polarizing film 21 (second elongated optical film laminate 20) is stretched with the second elongated release film 22 on the outside. And the second elongated polarizing film 21 (second elongated optical film laminate 20) with the third and fourth dancer rollers 233 and 235 movable up and down and the second elongated release film 22 inside The fourth, fifth and sixth guide rollers 232, 234 and 236 are provided.
Fourth, fifth, sixth covers 241, 242, 243 and fourth, fifth, sixth cover driving parts (not shown) to correspond to fourth, fifth, sixth guide rollers 232, 234, 236 ) Is placed. The operations of the fourth, fifth and sixth guide rollers 232, 234 and 236 are the same as the operations of the first, second and third covers 41, 42 and 43 described above.

(Another embodiment of the cover operation)
The present invention is not limited to the above embodiment, and the cover drive control unit 48 may control to move all the covers when film transport is stopped. In such a case, it may or may not be determined whether the incision S is located at the first, second, or third roller contact portions 321, 341, 361.
In the above embodiment, the cover is moved with respect to the fixed guide roller of the path length changing unit. However, the present invention is not limited to this. The cover is arranged with respect to the dancer roller moving vertically or horizontally. The cover may be moved to follow the movement of the dancer roller.
Further, the present invention is not limited to the configuration in which the cover is moved with respect to the guide roller of the path length changing unit, and may be configured to move the cover with respect to another fixed guide roller on the conveyance device.

(Another embodiment)
In the embodiment, the first, second, and third guide rollers have the first and second dancer rollers 33 and 35, and the first, second, and third guide rollers 32, 34, and 36, which can move up and down. The configuration has the first, second, and third covers 41, 42, 43 that can move up and down to correspond to 32, 34, 36, but is not limited thereto. For example, one dancer roller or There may be two or more, and there may be one or more guide rollers. The configuration is not limited to three guide rollers for two dancer rollers. For example, two guide rollers may be provided for one dancer roller, and four guide rollers may be provided for three dancer rollers. Then, the same number of covers as the number of guide rollers over which the first long polarizing film (first long optical film laminate) is stretched with the first long release film inside is similarly installed.

(Continuous production method of liquid crystal display panel)
In a method for continuously producing a liquid crystal display panel, a first optical film having at least an optical functional film (for example, a polarizing film) is bonded to a first surface of an optical cell, and a second optical having at least an optical functional film (for example, a polarizing film) The manufacturing process which bonds a film to the 2nd surface of an optical cell, and manufactures a liquid crystal display panel is included.
In the manufacturing process, while the long optical film is being transported, a predetermined interval is provided and the standby is performed, and when the long optical film is stopped to be transported, the cover is moved to the transport direction changing roller side, It includes a cover moving step of bringing a portion of the optical film across the conveyance direction changing roller and the cover into contact.

(Another embodiment)
In the present embodiment, the first sheet-like polarizing film 111 is attached from the lower side of the liquid crystal cell 5, and then the liquid crystal cell 5 to which the first sheet-like polarizing film 111 is attached is reversed (reverse and reverse, if necessary The second sheet-like polarizing film 211 is attached from the lower side of the liquid crystal cell 5 by rotating it by 90 °. However, the first sheet-like polarizing film may be attached from the upper side of the liquid crystal cell 5, the liquid crystal cell 5 may be inverted, and the second sheet-like polarizing film may be attached from the upper side of the liquid crystal cell 5. The first sheet-like polarizing film may be attached, and the second sheet-like polarizing film may be attached from the lower side of the liquid crystal cell without inverting the liquid crystal cell, and the first sheet-like polarizing film may be attached from the lower side of the liquid crystal cell Alternatively, the second sheet-like polarizing film may be attached from above the liquid crystal cell without inverting the liquid crystal cell. Alternatively, the first sheet-like polarizing film and the second sheet-like polarizing film may be simultaneously attached from the upper side and the lower side of the liquid crystal cell.

  Further, in the present embodiment, the configuration in which the optical film is attached to both sides of the optical cell by the so-called "roll-to-panel method" is exemplified, but the invention is not limited thereto. Optical cells may be attached to both sides of the optical cell, and optical films may be attached to one side of the optical cell by the "roll-to-panel method" and the other side by the "sheet-to-panel method".

  Moreover, in this embodiment, although the optical film roll was used, the structure of a roll-shaped optical film is not limited to this, You may use what is called a "cut optical film roll."

  Moreover, in this embodiment, although the elongate polarizing film drawn | fed out from the optical film roll was cut | disconnected by predetermined spacing, this invention in particular is not restrict | limited to this structure. For example, the long polarizing film drawn from the optical film roll may be subjected to a defect inspection, and cut (so-called skip cut) so as to avoid the defect based on the inspection result. In addition, the defect information or the mark attached to the defect position previously attached to the long polarizing film may be read, and cut so as to avoid the defect based on the defect information or the mark.

  Moreover, in this embodiment, although the elongate polarizing film has an absorption axis parallel to a longitudinal direction, the absorption axis direction of an elongate polarizing film is not limited to this. For example, the first elongated polarizing film may have an absorption axis parallel to its short direction (width direction), and the second elongated polarizing film may have an absorption axis parallel to its longitudinal direction. In this case, the turning mechanism for horizontally rotating the liquid crystal cell to which the first sheet-like polarizing film is attached can be omitted as appropriate.

Further, in the present embodiment, a liquid crystal cell is illustrated as an optical cell, but the present invention is not limited to this, and the optical cell may be an organic EL cell.
The organic EL cell has a configuration in which an electroluminescent layer is sandwiched between a pair of electrodes. The organic EL cell may be of any type such as top emission type, bottom emission type, double emission type, or the like. The organic EL display panel is obtained by laminating a polarizing film on one side or both sides of an organic EL cell, and a drive circuit is incorporated as needed.

First Guide Roller 32
Second guide roller 34
Third guide roller 36
First road length change unit 40
First cover 41
Second cover 42
Third cover 43
First cover drive 45
Second cover driver 46
Third cover drive unit 47
Cover drive control unit 48

Claims (5)

A conveying apparatus for conveying a long optical film having incisions in a width direction which is a direction orthogonal to a longitudinal direction,
The long optical film has at least an optical functional film and a release film laminated via the optical functional film and the pressure-sensitive adhesive layer, and a notch is formed in the optical film excluding the release film. Yes,
A transport direction changing roller in which the long optical film is stretched in a predetermined angle range with the release film inside;
A cover having a surface along a curved surface of the conveyance direction changing roller, which is disposed at a predetermined distance from the conveyance direction changing roller with the long optical film interposed therebetween;
A cover drive unit for moving the cover toward the transport direction changing roller;
During conveyance of the long optical film, the predetermined interval is provided and the standby is performed, and when the conveyance of the long optical film is stopped, the cover is moved to the conveyance direction changing roller side, and the long A cover drive control unit for bringing the cover into contact with a portion of the optical film of the tape which is stretched over the transport direction changing roller;
A transport device. The cover drive control unit
The cover drive unit is controlled to move the cover toward the transport direction changing roller when there is the cut in a portion of the long optical film bridged by the transport direction changing roller. The transport apparatus according to claim 1.   The conveyance direction changing roller is a guide roller fixed to the conveyance device except rotating around an axis orthogonal to the conveyance direction, or a dancer roller movable vertically vertically to the conveyance device. The conveying apparatus as described in 2. Manufacturing an optical display panel by bonding a first optical film having at least an optical functional film to a first surface of an optical cell, and bonding a second optical film having at least an optical functional film to a second surface of the optical cell A device,
The continuous manufacturing system of the optical display panel provided with the conveyance apparatus as described in any one of the said Claims 1-3. The manufacturing apparatus is
A sheet-like first optical film obtained by cutting the first long optical film while leaving the long first release film while feeding the first long optical film from the first optical film roll is conveyed Sticking to the first surface of the optical cell, or sticking a sheet-like first optical film to the first surface of the optical cell,
And / or a sheet-like second optical film obtained by cutting the second long optical film while leaving the second long release film while feeding the second long optical film from the second optical film roll, The sheet is pasted on the second surface of the optical cell to be conveyed such that the optical axis of the first optical film and the optical axis of the second optical film form a predetermined angular arrangement, or a sheet-like second The optical display according to claim 6, wherein an optical film is attached to the second surface of the optical cell such that an optical axis of the first optical film and an optical axis of the second optical film form a predetermined angular arrangement. Continuous production system of panels.

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