CN110226191B - Apparatus for feeding slit long optical film and system for continuously manufacturing optical display panel - Google Patents

Apparatus for feeding slit long optical film and system for continuously manufacturing optical display panel Download PDF

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Publication number
CN110226191B
CN110226191B CN201880004153.XA CN201880004153A CN110226191B CN 110226191 B CN110226191 B CN 110226191B CN 201880004153 A CN201880004153 A CN 201880004153A CN 110226191 B CN110226191 B CN 110226191B
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Prior art keywords
optical film
film
optical
cover
long
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CN201880004153.XA
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CN110226191A (en
Inventor
堤清贵
秋山孝二
采女展久
中村宜弘
臼井诚刚
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Nitto Denko Corp
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Nitto Denko Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/28—Registering, tensioning, smoothing or guiding webs longitudinally by longitudinally-extending strips, tubes, plates, or wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/048—Registering, tensioning, smoothing or guiding webs longitudinally by positively actuated movable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/61—Display device manufacture, e.g. liquid crystal displays

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Manufacturing & Machinery (AREA)
  • Theoretical Computer Science (AREA)
  • Polarising Elements (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention can prevent the optical film from rolling up from the cutting seam under the state of erecting on the roller when the conveying is stopped when the conveying device with the roller is used for conveying the optical film with the cutting seam. The present invention is a conveyance device for conveying a slit long optical film, comprising: a conveying direction changing roller for setting the release film inside and erecting the optical film within a predetermined angle range; a cover disposed at a predetermined interval from the conveying direction changing roller with an optical film interposed therebetween, the cover having a surface along the curved surface of the conveying direction changing roller; a cover driving part which makes the cover move towards the conveying direction changing roller side; and a cover drive control unit (48) which waits at a predetermined interval during the conveyance of the optical film, and moves the cover to the conveyance direction changing roller side when the conveyance of the optical film is stopped, and brings a portion of the optical film, which is laid over the conveyance direction changing roller, into contact with the cover.

Description

Apparatus for feeding slit long optical film and system for continuously manufacturing optical display panel
Technical Field
The present invention relates to a transport device for transporting a long optical film having slits and a continuous manufacturing system for optical display panels.
Background
A so-called half-cut method is known in which a laminated film having a multilayer structure is cut without cutting, for example, an outermost separator. In the half-cut, when the cut portion (slit) is stretched (held) by a roller so as to be positioned outside, the "curling" of the laminated film (or peeling of the slit end portion or floating of the slit end portion) occurs from the slit. When the transfer line of the laminated film is stopped, if the slit of the laminated film is positioned to be held by the roller, the "rolling-up" occurs remarkably.
Patent document 1 discloses a peeling prevention device capable of preventing "rolling-up" that occurs during the conveyance of an optical film, particularly when the conveyance direction is switched by 90 ° or more.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2009-186996
Disclosure of Invention
Problems to be solved by the invention
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 be rolled up to come into contact with the pressing member when the film conveyance is stopped. If the optical film starts to be conveyed again in a state where the optical film is rolled up and comes into contact with the pressing member, the optical film is rolled up while remaining in contact with the pressing member, and the subsequent optical member is also rolled up. In addition, the rolled optical film closes the gap, and the optical film cannot be conveyed.
In the case of the peeling prevention device shown in fig. 8 of patent document 1, the optical film is conveyed while being sandwiched by the small-diameter rollers, but when the slit stops at the gap between the small-diameter rollers, there is a concern that the film tip may be similarly curled. If the optical film is turned and the conveyance is started in the turned-up state, the optical film comes into contact with the small-diameter roller and the turning-up progresses further.
In the case of the separation prevention device shown in fig. 9 of patent document 1, since the optical film is sandwiched between the annular sheets, the optical film does not roll up as in the case of the structures shown in fig. 7 and 8, but the device becomes complicated. Further, even when the film transfer line is not stopped, the annular sheet is always in a state of being in surface contact with the optical film, and there is a concern that the optical film may rub against 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 sandwiched between the surfaces in a physically non-contact manner by blowing air, the problem of curling as shown in fig. 7 and 8 and the problem of friction as shown in fig. 9 do not occur, but the device still becomes complicated. In addition, the air flow in the manufacturing apparatus may be disturbed by the blowing of the air, and foreign substances may be stirred.
Accordingly, an object of the present invention is to provide a transport device capable of preventing an optical film from being rewound from a slit erected on a roller when the transport is stopped, in a case where the optical film on which the slit is formed is transported by a transport device having the roller.
Another object of the present invention is to provide a continuous manufacturing system for optical display panels, which can continuously produce optical display panels without causing a rollover from a cut of an optical film when the conveyance is stopped.
Means for solving the problems
As a result of intensive studies to solve the above problems, the following invention has been completed.
The invention is a conveying device for conveying a long optical film having a slit (S) in a width direction, which is a direction perpendicular to a longitudinal direction,
the long optical film has at least an optical functional film and a release film laminated with the optical functional film via an adhesive layer, and a slit is formed in a portion of the optical film other than the release film,
the conveying device is provided with:
a transport direction changing roller for setting the long optical film within a predetermined angle range with the release film being positioned inside;
a cover disposed at a predetermined distance (D1) from the conveying direction changing roller with the long optical film interposed therebetween (so as not to contact the optical film), the cover having a surface (inner curved surface) along the curved surface of the conveying direction changing roller;
a cover driving unit that moves the cover toward the conveying direction changing roller;
and a cover drive control unit that waits (at a waiting position P1) with the predetermined interval (D1) set therebetween during the conveyance of the long optical film, and moves the cover toward (the contact position P2 of) the conveyance direction changing roller and causes (the inner curved surface of) a portion of the long optical film that is stretched over the conveyance direction changing roller to contact with the cover when the conveyance of the long optical film is stopped.
The "predetermined angular range" is a range of an angle θ (see fig. 3) formed between the upstream optical film and the downstream optical film around the conveyance direction changing roller, and may be greater than 0 ° and 180 ° or less. A value of θ of 0 ° means that the upstream optical film and the downstream optical film are aligned, and a value of θ of 180 ° means that the transport direction of the upstream optical film and the transport direction of the downstream optical film are parallel to each other and opposite to each other. Depending on the arrangement of the guide rollers, the angle θ may be larger than 180 °. The angle θ corresponds to a change range of the conveying direction.
The "predetermined interval (D1)" is a length at least longer than the thickness of the long optical film, and is defined as a distance from the outer surface (P3) of the conveyance direction changing roller to the inner curved surface (P1) of the cover. The "predetermined interval (D1)" is, for example, 1.1 times or more and 100 times or less the thickness of the long optical film. In fig. 2A, the thickness of the optical film may be equal to (D1-D2) or equal to or greater than (D1-D2) when the predetermined interval D1 and the length D2 from the standby position P1 to the contact position P2 are set. Preferably, the contact position P2 is set to such an extent that the optical film is not deformed or the adhesive layer is not protruded when the optical film is pressed against the roller by the hood.
In the above-described invention, the cover drive control unit may control the cover drive unit to move the cover toward the conveying direction changing roller when the cover drive control unit determines that the slit is formed in a portion (roller contact portion) of the long optical film that is stretched over the conveying direction changing roller when the conveyance of the long optical film is stopped.
The conveying direction changing roller according to the above invention may be a guide roller that is rotatable about an axis orthogonal to the conveying direction and is fixed to the conveying device. The guide roller may be provided in the fixed portion.
The conveyance direction changing roller according to the above invention may be a dancer roller movable in a vertical direction or a horizontal direction with respect to the conveyance device. The present invention may further include a driving unit for moving the dancer roller.
In the above invention, the apparatus may be configured to include 1 or more of the conveyance direction changing rollers (dancer roller and/or guide roller), the cover, and the cover driving unit, and the unit may be configured to be a path length changing unit capable of changing a path length, which is a length of the conveyance path of the long optical film. The path length changing unit is also sometimes called an accumulating device (Japanese: アキューム device).
According to the above invention, when the conveyance is stopped, the cover is moved toward the conveyance direction changing roller, and the portion of the optical film (roller contact portion) stretched over the conveyance direction changing roller is brought into contact with the inner curved surface of the cover, whereby the optical film can be appropriately prevented from being turned over from the cut.
Another continuous manufacturing system for optical display panels of the present invention includes: a continuous manufacturing apparatus that manufactures an optical display panel by bonding a first optical film having at least an optical functional film to a first surface of an optical unit and/or bonding a second optical film having at least an optical functional film to a second surface of the optical unit; and
the conveying device.
In the above invention, the manufacturing apparatus may be configured such that,
attaching a first optical film in a sheet form, which is obtained by feeding a first long optical film from a first optical film roll while leaving a long first release film and cutting the first long optical film, to the first surface of the conveyed optical unit, or attaching the first optical film in a sheet form to the first surface of the optical unit,
and/or the presence of a gas in the gas,
and a second optical film roll for feeding a second long optical film from a second optical film roll while leaving a long second release film and cutting the second long optical film, wherein the second optical film roll is attached to the second surface of the conveyed optical unit such that an optical axis of the first optical film and an optical axis of the second optical film are arranged at a predetermined angle, or the second optical film roll is attached to the second surface of the optical unit such that the optical axis of the first optical film and the optical axis of the second optical film are arranged at a predetermined angle.
According to the invention, the optical display panel can be continuously produced without being rolled up from the cutting seam of the optical film when the conveying is stopped.
In the present invention, the "optical film roll" is formed in a roll shape by laminating a long release film and a long optical film (an adhesive layer, an optical functional film, and a surface protective film) in this order.
The "roll-to-panel method" is a method in which a release film is left on a release film and a long optical film fed from an optical film roll, the adhesive layer, the optical functional film, and the surface protective film are cut (half-cut) in the width direction, the long release film is peeled from the cut sheet-shaped optical film, and the sheet-shaped optical film is bonded to the optical unit with the exposed adhesive layer interposed therebetween.
On the other hand, a different type of optical film bonding from the roll-to-panel type is the "sheet-to-panel type". The "sheet-to-panel system" is a system in which a sheet-like optical film prepared in advance in a sheet state is bonded to an optical unit through an adhesive layer exposed by peeling off a sheet-like release film or a long release film.
The "optical film roll with slits" is a roll formed by laminating sheet-like optical films (an adhesive layer, an optical functional film, and a surface protective film) in a longitudinal direction in a line on a long release film.
Drawings
Fig. 1A is a schematic diagram showing an example of a continuous manufacturing system for optical display panels.
Fig. 1B is a schematic diagram showing an example of a continuous manufacturing system for optical display panels.
Fig. 2A is a schematic view of the cover located at the standby position.
Fig. 2B is a schematic view of the cover moved to the contact position.
Fig. 3 is a diagram for explaining the angle θ.
Detailed Description
The following describes a system for continuously manufacturing an optical display panel more specifically with reference to fig. 1A, 1B, 2A, and 2B, but the present invention is not limited to the technical means of the present embodiment.
The optical display panel is described as a liquid crystal display panel, the optical unit is described as a liquid crystal unit, and the optical film is described as a polarizing film.
The continuous manufacturing system for liquid crystal display panels has a continuous manufacturing apparatus 100. The continuous manufacturing apparatus 100 is used to attach the first sheet-like polarizing film 111 obtained by cutting the first long polarizing film 11 to the first surface 5a of the liquid crystal cell 5 while feeding the first long release film 12 and the first long polarizing film 11 from the first optical film roll R1. Further, the liquid crystal display panel Y is manufactured by using the continuous manufacturing apparatus 100, while feeding the second long release film 22 and the second long polarizing film 21 from the second optical film roll R2, respectively, and attaching the second sheet-like polarizing film 211 obtained by cutting the second long polarizing film 21 to the second surface 5b 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.
In the continuous manufacturing system of the liquid crystal display panel, the continuous manufacturing apparatus 100 is disposed in a series of panel conveying apparatuses 120 for conveying the liquid crystal unit 5 and the liquid crystal display panel Y. The conveying line of the panel conveying device 120 is depicted as a straight line by x, but is not limited to a straight line.
(optical film roll)
As the roll of optical film formed by winding the long polarizing film, for example, (1) a roll of optical film formed by winding a long optical film laminate in a continuous sheet form having a release film and a pressure-sensitive adhesive layer formed on the release film into a roll shape can be cited. In this case, the continuous manufacturing system of the liquid crystal display panel has a cutting device for forming a sheet-like polarizing film (sheet) from the long polarizing film, and the cutting device cuts (half-cuts) the long polarizing film (adhesive-containing layer) at predetermined intervals in a direction orthogonal to the conveying direction of the release film, leaving the release film (forming a slit).
Further, as the optical film roll, for example, (2) an optical film roll (so-called polarizing film roll with slit) in which a long optical film laminate having a release film and a sheet-like polarizing film (adhesive-containing layer) adjacent to each other on the release film with a slit in a direction orthogonal to a transport direction of the release film interposed therebetween is wound in a roll shape can be cited.
The first optical film roll R1 shown in fig. 1A is formed by winding a first long optical film laminate 10 having a first long release film 12 and a first long polarizing film (including an adhesive layer thereof) 11, the first long polarizing film 11 being formed on the first long release film 12 with the adhesive layer interposed therebetween and having an absorption axis parallel to the conveyance direction (longitudinal direction), into a roll shape.
The second optical film roll R2 shown in fig. 1B is formed by winding a second long optical film laminate 20 having a second long release film 22 and a second long polarizing film (including an adhesive layer thereof) 21, the second long polarizing film 21 being formed on the second long release film 22 with the adhesive layer interposed therebetween and having an absorption axis parallel to the conveyance direction (longitudinal direction), in a roll shape.
The first long polarizing film 11 and the second long polarizing film 21 are formed of, for example, a polarizing plate (having a thickness of about 5 μm to 80 μm) and a polarizing plate protective film (having a thickness of about 1 μm to 500 μm in general) attached to one surface or both surfaces of the polarizing plate with or without an adhesive.
Examples of the other films constituting the first long polarizing film 11 and the second long polarizing film 21 include a retardation film (having a thickness of usually 10 to 200 μm), a viewing angle compensation film, a brightness enhancement film, and a surface protection film. The thicknesses of the first long polarizing film 11 and the second long polarizing film 21 may be, for example, in the range of 10 μm to 500 μm.
The pressure-sensitive adhesive of the pressure-sensitive adhesive layer constituting the first long polarizing film 11 and the second long polarizing film 21 is not particularly limited, and examples thereof include acrylic pressure-sensitive adhesives, silicone pressure-sensitive adhesives, and urethane pressure-sensitive adhesives. The thickness of the adhesive layer is preferably in the range of, for example, 10 to 50 μm. For example, conventionally known films such as plastic films (e.g., polyethylene terephthalate films, polyolefin films, etc.) can be used as the first release film 12 and the second release film 22. Further, a film which is coated with an appropriate release agent such as silicone, long chain alkyl, fluorine, or molybdenum sulfide, as necessary, or a film which is conventionally used may be used.
(liquid crystal display panel)
The liquid crystal display panel Y is a panel in which at least a polarizing film is formed on one surface or both surfaces of the liquid crystal cell 5, and can incorporate a driving circuit as necessary. The liquid crystal cell 5 can be of any type such as a Vertical Alignment (VA) type, an in-plane switching (IPS) type, or the like. The liquid crystal cell 5 has a structure in which a liquid crystal layer is sealed between a pair of substrates (1 st substrate 5a and 2 nd substrate 5b) arranged to face each other.
(continuous production apparatus)
The continuous manufacturing apparatus 100 includes a first release film transfer device 110, a first pasting unit 80, a second release film transfer device 210, and a second pasting unit 280.
As shown in fig. 1A, the first release film feeding apparatus 110 feeds the first long release film 12 and the first long polarizing film 11 (first long optical film laminate 10) from the first optical film roll R1 to the first pasting section 80.
In the present embodiment, the first release film feeding device 110 includes a first cutting unit 30, a first path changing unit 40, a first peeling unit 50, and a first winding unit 61.
The first cutting unit 30 fixes the first long optical film laminate 10 from the first long release film 12 side by the first suction unit 30a, and cuts the first long polarizing film (adhesive-containing layer) 11 in the width direction while leaving the first long release film 12, thereby forming the first sheet-like polarizing film 111 on the first long release film 12.
Examples of the first cutting unit 30 include a cutter and a laser device. The first suction unit 30a may be, for example, a suction plate having a large number of holes connected to a vacuum pump and capable of sucking air from the holes under negative pressure.
The first path length changing unit 40 includes a plurality of conveyance direction changing rollers, a first cover 41, a second cover 42, a third cover 43, a first cover driving unit 45, a second cover driving unit 46, and a third cover driving unit 47.
The plurality of conveying direction changing rollers include: guide rollers (31, 37) for setting the first long polarizing film 11 (first long optical film laminate 10) so as to be stretched with the first long release film 12 on the outside; a first dancer roller 33 and a second dancer roller 35 which can move up and down; and a first guide roller 32, a second guide roller 34, and a third guide roller 36 that span the first long polarizing film 11 (the first long optical film laminate 10) with the first long release film 12 inside.
The first cover 41, the second cover 42, and the third cover 43 are disposed corresponding to the first guide roller 32, the second guide roller 34, and the third guide roller 36, and the first cover driving unit 45, the second cover driving unit 46, and the third cover driving unit 47 are disposed. The operation of the first cover 41, the second cover 42, and the third cover 43 will be described later.
The first peeling section 50 folds back the first long release film 12 with its distal end portion being positioned inside, and peels the first sheet-like polarizing film 111 from the first long release film 12. The peeled first sheet-like polarizing film 111 is supplied to the first bonding section 80.
In the present embodiment, the first peeling section 50 uses a sharp edge portion at its distal end portion, but is not limited thereto.
The first winding section 61 winds the first long release film 12 from which the first sheet-like polarizing film 111 is peeled. The first winding portion 61 may be formed of an automatic rotating roller.
The first bonding section 80 bonds the first polarizing film sheet 111, from which the first long release film 12 has been peeled by the first peeling section 50, to the liquid crystal cell 5 through the adhesive layer from one surface (the first surface 5a) of the liquid crystal cell 5 conveyed by the panel conveying apparatus 120.
In the present embodiment, the first bonding portion 80 is composed of a first bonding roller 81 and a first driving 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 the various components, devices, and the like described above.
The second release film feeding device 210 feeds the second long release film 22 and the second long polarizing film 21 (the second long optical film laminate 20) from the second optical film roll R2 to the second pasting unit 280.
In the present embodiment, the second release film feeding device 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 feeding device 210 may be configured by the same device as the first release film feeding device 110, and the second pasting part 280 may be configured by the same device as the first pasting part 80.
For example, the second cutting portion 230 and the second suction portion 230a may be formed by the same device as the first cutting portion 30 and the first suction portion 30 a. The second path length changing unit 240 may be configured by the same device as the first path length changing unit 40. The second winding portion 261 can be constituted by the same device as the first winding portion 61. The second pasting roller 281 and the second driving roller 282 can be configured by the same mechanism as the first pasting roller 81 and the first driving roller 82.
The panel transport device 120 is a series of transport devices for transporting the liquid crystal cell 5 and the liquid crystal display panel Y having the first sheet-like polarizing film 111 and the second sheet-like polarizing film 211 attached to both surfaces of the liquid crystal cell 5. The panel transport device 120 includes transport rollers, suction plates, and the like.
In the present embodiment, the panel transport device 120 includes a rotation mechanism capable of horizontally rotating the liquid crystal cell 5 to which the first sheet-like polarizing film 111 is attached by 90 °, and a tilting mechanism capable of vertically tilting the liquid crystal cell 5 to which the first sheet-like polarizing film 111 is attached.
(action of the cover)
Fig. 2A shows a state in which the first cover 41, the second cover 42, and the third cover 43 are standing by at the standby position P1.
The first cover 41 is disposed above the first guide roller 32 at a predetermined interval D1, the second cover is disposed above the second guide roller 34 at a predetermined interval D1, and the third cover 43 is disposed above the third guide roller 36 at a predetermined interval D1.
The first cover 41 has the same length as the roller longitudinal direction length of the first guide roller 32, which is the conveyance direction changing roller, and has an inner curved surface 41a along the curved surface of the roller. In fig. 2A (side view), both end portions of the cover extending from the inner curved surface 41a are curved outward of the cover. The first cover 41 is connected to the first cover driving unit 45, and the first cover 41 is configured to be able to reciprocate between a standby position P1 and an abutment position P2 on the first guide roller 32 side by the driving operation of the first cover driving unit 45. By moving to the contact position P2, the first cover 41 presses the first sheet-like polarizing film 111 toward the first guide roller 32, and the first sheet-like polarizing film can be appropriately prevented from being rolled up from the slit S.
The second cover 42 and the third cover 43 also have the same structure as the first cover 41. The second cover 42 is connected to the second cover driving unit 46, and the second cover 42 can be reciprocated between the standby position P1 and the contact position P2 on the second guide roller 34 side by the driving operation of the second cover driving unit 46. At the contact position P2, the second cover 42 presses the first sheet-like polarizing film 111 toward the second guide roller 34.
The third cover 43 is connected to the third cover driving unit 47, and the third cover 43 can be reciprocated between the standby position P1 and the contact position P2 on the third guide roller 36 side by the driving operation of the third cover driving unit 47. At the contact position P2, the third cover 43 presses the first sheet-like polarizing film 111 toward the third guide roller 36.
Examples of the first drive unit 45, the second drive unit 46, and the third cover drive unit 47 include, but are not limited to, linear actuators such as air cylinders, hydraulic cylinders, and electric cylinders.
When the conveyance of the first long optical film laminate 10 is stopped, the cover drive control unit 48 determines that the first roller contact portion 321, the second roller contact portion 341, and the third roller contact portion 361, which are provided on the first guide roller 32, the second guide roller 34, and the third guide roller 36 (conveyance direction changing roller) of the first long optical film laminate 10, have a cut, and controls the first cover drive unit 45, the second cover drive unit 46, and the third cover drive unit 47 so that the first cover 41, the second cover 42, and the third cover 43 move toward the first guide roller 32, the second guide roller 34, and the third guide roller 36.
The cover drive control unit 48 may determine whether the slit S is positioned in the first roller contact portion 321, the second roller contact portion 341, or the third roller contact portion 361 based on the position data of the slit S acquired in advance.
The position data of the slit S may be data obtained from cutting position data when the first long polarizing film 11 is cut in the width direction, data obtained from image data specifying the slit position imaged by the imaging unit after the slit S is formed, or data obtained from detection data obtained by detecting the slit position by an optical sensor.
In addition, if the optical film roll is formed by winding the first long polarizing film having the slit without the first cutting portion in a roll shape, the optical film roll may be obtained from a storage medium (a memory of a local PC or a server, a wireless tag, or the like) or code data (a QR code (registered trademark), a barcode, or the like) in which position data of the slit is stored.
When the conveyance of the first long optical film laminate 10 is stopped, the cover drive control unit 48 may analyze image data obtained by imaging at least the first roller contact portion 321, the second roller contact portion 341, and the third roller contact portion 361 by the imaging unit, and move the cover when the slit S is positioned at the first roller contact portion 321, the second roller contact portion 341, and the third roller contact portion 361.
Examples of the stop of the conveyance of the first long optical film laminate 10 include conveyance stop caused by an operation by an operator, conveyance stop at the time of processing for attaching the first sheet-like polarizing film 111 to the liquid crystal cell 5 by the first attaching portion 80, conveyance stop at the time of completion of a work, and the like.
The cover drive control unit 48 may receive a stop signal for film feeding from a system control unit, not shown, and may control the cover to move from the standby position P1 to the contact position P2 based on the stop signal.
When the slit intervals are constant, the lengths of the first sheet-like polarizing film 111 in the transport direction are all the same in the pasting process by the first pasting section 80, and therefore, it can be known in advance whether or not the slits S are positioned in the first roller contact portion 321, the second roller contact portion 341, and the third roller contact portion 361. In this case, the minimum necessary cover may be moved. As shown in fig. 2B, since the slits S1, S2 are located at the first roller contact portion 321 and the third roller contact portion 361, only the first cover 41 and the third cover 43 are moved to the abutment position P2.
In the so-called skip-slit method in which the slit positions are changed in consideration of the defects of the first long polarizing film 10, there are portions where the slit intervals are narrowed, and there are cases where slits are positioned at each roller contact portion and cases where slits are not positioned at each roller contact portion. In this case, the cover drive control unit 48 can also determine whether or not the slit is located at the roller contact portion at the time of stopping the film conveyance based on the cutting position data (slit position data), and therefore, can appropriately control the cover movement.
The cover drive control unit 48 moves the moved cover to the standby position P1 before the conveyance of the first long optical film laminate 10 is restarted (or started).
Examples of the resumption of the conveyance of the first long optical film laminate 10 include, for example, resumption of the conveyance by the operation of the operator, and resumption of the conveyance when the first pasting section 80 performs the process of pasting the first sheet-like polarizing film 111 to the liquid crystal cell 5.
The cover drive control unit 48 may be configured to receive a film conveyance restart signal from a system control unit, not shown, to return the cover from the contact position P2 to the standby position P1, and then to restart the film conveyance.
The system control unit may be configured to restart the film conveyance upon receiving a signal indicating that all the covers are located at the standby position P2. Alternatively, the film feeding may be restarted after a predetermined time has elapsed from the start of the movement of the cover.
The second path length changing unit 240 includes a plurality of conveyance direction changing rollers, a fourth cover 241, a fifth cover 242, a sixth cover 243, a fourth cover driving unit, a fifth cover driving unit, and a sixth cover driving unit (not shown).
The plurality of conveying direction changing rollers include: guide rollers (231, 237) for stretching the second long polarizing film 21 (second long optical film laminate 20) with the second long release film 22 on the outside; a third dancer roller 233 and a fourth dancer roller 235 that can move up and down; and a fourth guide roller 232, a fifth guide roller 234, and a sixth guide roller 236 that span the second long polarizing film 21 (the second long optical film laminate 20) with the second long release film 22 inside.
A fourth cover 241, a fifth cover 242, a sixth cover 243, a fourth cover driving unit, a fifth cover driving unit, and a sixth cover driving unit (not shown) are arranged corresponding to the fourth guide roller 232, the fifth guide roller 234, and the sixth guide roller 236. The operations of the fourth cover 241, the fifth cover 242, and the sixth cover 243 are the same as the operations of the first cover 41, the second cover 42, and the third cover 43 described above.
(alternative embodiment of the cover action)
The present invention is not limited to the above embodiment, and the cover drive control unit 48 may control all the covers to move when the film conveyance is stopped. In this case, it may be determined whether or not the slit S is located in the first roller contact portion 321, the second roller contact portion 341, and the third roller contact portion 361, or it may not be determined.
Further, in the above-described embodiment, the cover is moved with respect to the fixed guide roller of the path length changing section, but the present invention is not limited to this, and a structure may be adopted in which the cover is disposed with respect to the dancer roller that moves vertically up and down or horizontally, and the cover is moved so as to follow the movement of the dancer roller.
The cover is not limited to the structure for moving the cover with respect to the guide roller of the path length changing unit, and may be moved with respect to another fixed guide roller on the conveying device.
(other embodiments)
In the embodiment, the first dancer roller 33, the second dancer roller 35, and the first guide roller 32, the second guide roller 34, and the third guide roller 36 are provided so as to be movable up and down, and the first cover 41, the second cover 42, and the third cover 43 are provided so as to be movable up and down so as to correspond to the first guide roller 32, the second guide roller 34, and the third guide roller 36, but the present invention is not limited thereto, and for example, the dancer roller may be 1, or two or more, and the guide roller may be 1, or two or more. The present invention is not limited to the configuration in which 3 guide rollers 3 are provided for two dancer rollers, and may be configured to include two guide rollers for 1 dancer roller and 4 guide rollers for 3 dancer rollers, for example. The same number of covers as the number of guide rollers for mounting the first long polarizing film (first long optical film laminate) with the first long release film inside are also provided.
(method for continuously manufacturing liquid Crystal display Panel)
The method for continuously manufacturing a liquid crystal display panel includes a manufacturing step of manufacturing a liquid crystal display panel by bonding a first optical film having at least an optical functional film (e.g., a polarizing film) to a first surface of an optical unit and bonding a second optical film having at least an optical functional film (e.g., a polarizing film) to a second surface of the optical unit.
The manufacturing process includes a cover moving step of waiting for a predetermined interval while the long optical film is being conveyed, and moving the cover toward the conveying direction changing roller and bringing a portion of the long optical film, which is laid on the conveying direction changing roller, into contact with the cover when the conveyance of the long optical film is stopped.
(other embodiments)
In the present embodiment, the first sheet-like polarizing film 111 is attached from below the liquid crystal cell 5, and then the liquid crystal cell 5 to which the first sheet-like polarizing film 111 is attached is turned upside down (turned 90 ° as necessary), and the second sheet-like polarizing film 211 is attached from below the liquid crystal cell 5. 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 reversed, 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 from the upper side of the liquid crystal cell, the liquid crystal cell may not be reversed, and the second sheet-like polarizing film may be attached from the lower side of the liquid crystal cell, the first sheet-like polarizing film may be attached from the lower side of the liquid crystal cell, the liquid crystal cell may not be reversed, and the second sheet-like polarizing film may be attached from the upper side of the liquid crystal cell. Further, 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.
In addition, in this embodiment, a configuration in which optical films are attached to both surfaces of an optical unit by a so-called "roll-to-panel method" is exemplified, but the present invention is not limited thereto, and optical films may be attached to both surfaces of an optical unit by a "sheet-to-panel method", or an optical film may be attached to one surface of an optical unit by a "roll-to-panel method" and an optical film may be attached to the other surface by a "sheet-to-panel method".
In the present embodiment, the optical film roll is used, but the structure of the optical film roll is not limited to this, and a so-called "optical film roll having slits" may be used.
In the present embodiment, the long polarizing film fed from the optical film roll is cut at predetermined intervals, but the present invention is not particularly limited to this configuration. For example, a defect inspection may be performed on a long polarizing film fed from an optical film roll, and based on the inspection result, cutting may be performed so as to avoid the defect (so-called skip cutting). Further, the defect information previously marked on the long polarizing film or the mark marked at the defect position may be read, and the cutting may be performed so as to avoid the defect based on the defect information or the mark.
In the present embodiment, the long polarizing film has an absorption axis parallel to the longitudinal direction, but the absorption axis direction of the long polarizing film is not limited thereto. For example, the first long polarizing film may have an absorption axis parallel to the short side direction (width direction) thereof, and the second long polarizing film may have an absorption axis parallel to the longitudinal direction thereof. In this case, a rotation mechanism for horizontally rotating the liquid crystal cell to which the first sheet-like polarizing film is attached by 90 ° can be appropriately omitted.
In addition, in the present embodiment, a liquid crystal cell is exemplified as the optical cell, but the optical cell is not limited thereto, and the optical cell may be an organic E L cell.
The organic E L cell has a structure in which an electroluminescent layer is sandwiched between a pair of electrodes, any type of organic E L cell can be used, such as a top emission type, a bottom emission type, and a dual emission type, and the organic E L display panel is a panel in which a polarizing film is bonded to one surface or both surfaces of the organic E L cell, and a driver circuit can be incorporated as needed.
Description of the reference numerals
32. A first guide roller; 34. a second guide roller; 36. a third guide roller; 40. a first path length changing unit; 41. a first cover; 42. a second cover; 43. a third cover; 45. a first cover driving section; 46. a second cover driving section; 47. a third cover driving part; 48. a cover drive control unit.

Claims (5)

1. A conveying device for conveying a long optical film having slits in a width direction, which is a direction orthogonal to a longitudinal direction, wherein,
the long optical film has at least an optical functional film and a release film laminated with the optical functional film via an adhesive layer, and a slit is formed in a portion of the optical film other than the release film,
the conveying device is provided with:
a transport direction changing roller for setting the long optical film within a predetermined angle range with the release film being positioned inside;
a cover disposed at a predetermined interval from the conveyance direction changing roller with the long optical film interposed therebetween, the cover having a surface along a curved surface of the conveyance direction changing roller;
a cover driving unit that moves the cover toward the conveying direction changing roller; and
and a cover drive control unit configured to wait at the predetermined interval while the long optical film is being conveyed, and move the cover toward the conveying direction changing roller and bring a portion of the long optical film, which is laid on the conveying direction changing roller, into contact with the cover when the conveyance of the long optical film is stopped.
2. The delivery device of claim 1,
the cover drive control unit controls the cover drive unit to move the cover toward the conveying direction changing roller when the slit is located at a portion of the long optical film that is stretched over the conveying direction changing roller.
3. The delivery device of claim 1 or 2,
the conveyance direction changing roller is a guide roller that is fixed to the conveyance device and is rotatable about an axis orthogonal to the conveyance direction, or a dancer roller that is vertically movable with respect to the conveyance device.
4. A continuous manufacturing system for optical display panels, wherein,
the continuous manufacturing system of the optical display panel comprises:
a manufacturing apparatus that manufactures an optical display panel by bonding a first optical film having at least an optical functional film to a first surface of an optical unit and bonding a second optical film having at least an optical functional film to a second surface of the optical unit; and
the delivery device of any one of claims 1 to 3.
5. The continuous manufacturing system of optical display panels according to claim 4,
the manufacturing apparatus attaches a first optical film in a sheet form, which is obtained by feeding a first long optical film from a first optical film roll while leaving a long first release film and cutting the first long optical film, to the first surface of the conveyed optical unit, or attaches a first optical film in a sheet form in advance to the first surface of the optical unit,
and/or the presence of a gas in the gas,
the manufacturing apparatus attaches a second optical film in a sheet form, which is obtained by cutting a second long optical film while leaving a long second release film on the second long optical film while feeding the second long optical film from a second optical film roll, to the second surface of the conveyed optical unit such that an optical axis of the first optical film and an optical axis of the second optical film are arranged at a predetermined angle, or attaches a second optical film in a sheet form in advance to the second surface of the optical unit such that an optical axis of the first optical film and an optical axis of the second optical film are arranged at a predetermined angle.
CN201880004153.XA 2018-01-04 2018-09-10 Apparatus for feeding slit long optical film and system for continuously manufacturing optical display panel Active CN110226191B (en)

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JP2018000033A JP6505877B1 (en) 2018-01-04 2018-01-04 Conveying apparatus for conveying a long optical film having incisions, and continuous production system of optical display panel
PCT/JP2018/033390 WO2019135299A1 (en) 2018-01-04 2018-09-10 Conveyance device for conveying elongate optical film having cut, and continuous manufacturing system of optical display panels

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104126198A (en) * 2012-03-07 2014-10-29 日东电工株式会社 Continuous manufacturing method for optical display panel, continuous manufacturing system for same, switching method, and feeding device
CN104272178A (en) * 2012-02-29 2015-01-07 日东电工株式会社 Optical display panel fabrication method and optical display panel fabrication system
CN104737066A (en) * 2012-11-09 2015-06-24 日东电工株式会社 Continuous manufacturing method of optical display panels and continuous manufacturing system of optical display panels
CN104737065A (en) * 2012-11-09 2015-06-24 日东电工株式会社 Continuous manufacturing method of optical display panels and continuous manufacturing system of optical display panels
CN105980279A (en) * 2014-02-05 2016-09-28 住友化学株式会社 Method for conveying film and method for producing optical film
JP2017032739A (en) * 2015-07-31 2017-02-09 株式会社日立製作所 Apparatus and system for sticking optical film

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05216132A (en) * 1992-02-05 1993-08-27 Fuji Photo Film Co Ltd Auto-loading device for photosensitive material
WO2009072495A1 (en) * 2007-12-06 2009-06-11 Nitto Denko Corporation Process for producing optical display unit, sheet product for use in the same, and sheet roll
JP4307510B1 (en) * 2007-12-27 2009-08-05 日東電工株式会社 Optical display device manufacturing system and method
CN101910035B (en) * 2008-01-10 2013-05-15 日东电工株式会社 System for manufacturing optical display unit, and transfer mechanism
JP2011116486A (en) * 2009-12-02 2011-06-16 Sharp Corp Film peeling device
JP4972197B2 (en) * 2010-08-27 2012-07-11 日東電工株式会社 Optical functional film continuous roll, liquid crystal display device manufacturing method using the same, and optical functional film laminating apparatus
JP5931527B2 (en) * 2011-05-20 2016-06-08 日東電工株式会社 Liquid crystal display element manufacturing method and liquid crystal display element manufacturing system
JP5996204B2 (en) * 2012-02-13 2016-09-21 日産自動車株式会社 Belt-shaped battery material transport device and transport method
JP2015048172A (en) * 2013-08-30 2015-03-16 大日本印刷株式会社 Web guide device and method
JP6815096B2 (en) * 2015-05-27 2021-01-20 株式会社半導体エネルギー研究所 Peeling device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104272178A (en) * 2012-02-29 2015-01-07 日东电工株式会社 Optical display panel fabrication method and optical display panel fabrication system
CN104126198A (en) * 2012-03-07 2014-10-29 日东电工株式会社 Continuous manufacturing method for optical display panel, continuous manufacturing system for same, switching method, and feeding device
CN104737066A (en) * 2012-11-09 2015-06-24 日东电工株式会社 Continuous manufacturing method of optical display panels and continuous manufacturing system of optical display panels
CN104737065A (en) * 2012-11-09 2015-06-24 日东电工株式会社 Continuous manufacturing method of optical display panels and continuous manufacturing system of optical display panels
CN105980279A (en) * 2014-02-05 2016-09-28 住友化学株式会社 Method for conveying film and method for producing optical film
JP2017032739A (en) * 2015-07-31 2017-02-09 株式会社日立製作所 Apparatus and system for sticking optical film

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KR102089917B1 (en) 2020-03-16
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KR20190084251A (en) 2019-07-16
WO2019135299A1 (en) 2019-07-11
JP2019120778A (en) 2019-07-22

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