WO2018016288A1 - Essemble de films optiques et son procédé de production - Google Patents

Essemble de films optiques et son procédé de production Download PDF

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Publication number
WO2018016288A1
WO2018016288A1 PCT/JP2017/023946 JP2017023946W WO2018016288A1 WO 2018016288 A1 WO2018016288 A1 WO 2018016288A1 JP 2017023946 W JP2017023946 W JP 2017023946W WO 2018016288 A1 WO2018016288 A1 WO 2018016288A1
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WIPO (PCT)
Prior art keywords
film
optical
optical film
surface protective
roll
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PCT/JP2017/023946
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English (en)
Japanese (ja)
Inventor
健太郎 池嶋
聡司 三田
友徳 上野
恵美 宮井
菁▲王番▼ 徐
岸　敦史
Original Assignee
日東電工株式会社
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Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to KR1020187005400A priority Critical patent/KR102436860B1/ko
Priority to CN201780002968.XA priority patent/CN107924020B/zh
Publication of WO2018016288A1 publication Critical patent/WO2018016288A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • 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
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/42—Polarizing, birefringent, filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light

Definitions

  • the present invention relates to an optical film set having a roll-shaped optical film and a sheet-shaped optical film and a method for producing the same.
  • An optical film in which a release film, an adhesive layer, an optical functional film (typically, a polarizing film) and a surface protective film are laminated in this order is formed in a roll shape.
  • An optical film obtained by cutting the optical film fed from the roll-shaped optical film by cutting the adhesive layer, the optical functional film and the surface protective film in the width direction (half cut) while leaving the release film. (Hereinafter also referred to as “roll-to-panel method”) in which the release film is peeled off and the optical film is bonded to the optical cell through the exposed adhesive layer (for example, Patent Documents 1 and 2). reference).
  • an optical film bonding method different from the roll-to-panel method an optical film that has been in a single wafer state is pasted to an optical cell via an adhesive layer that is exposed by peeling the release film.
  • sheet-to-panel method a method of matching (hereinafter also referred to as “sheet-to-panel method”) (see, for example, Patent Document 3).
  • Patent Document 2 discloses that an optical display panel is continuously manufactured using a roll-to-panel method, and a rework process is performed on the optical display panel determined to be defective.
  • a sheet-to-panel method when a new optical functional film is bonded to the optical cell in the rework process.
  • the roll-to-panel method cannot cover all supply amounts, and the sheet-to-panel method is used together. Is also possible.
  • optical functional films for example, polarizing films having a thickness of 60 ⁇ m or less
  • Such a thin optical functional film has a low waist (elastic modulus) and is likely to be twisted or curled.
  • a thin optical functional film is transported to a bonding position in a state of being laminated on a carrier film (release film), and the optical function from the carrier film (release film) at the bonding position. Since the film is peeled off and the optical functional film is bonded to the optical cell, a thin optical functional film can be continuously bonded to the optical cell while suppressing the occurrence of twisting and curling.
  • handling such as transporting the optical functional film in a single wafer state, peeling of the release film, and laminating processing of the optical functional film to the liquid crystal cell is difficult, resulting in poor bonding. There is concern about a drop in yield.
  • an optical display panel having the same configuration can be suitably manufactured even when a roll-to-panel method and a sheet-to-panel method are used in combination when a thin optical functional film is bonded to an optical cell. It aims at providing a film set and its manufacturing method.
  • the present invention is an optical film set having a roll-shaped optical film and a sheet-shaped optical film
  • the roll-shaped optical film has a structure in which a release film, an adhesive layer, an optical functional film, and a first surface protective film are laminated in this order
  • the sheet-like optical film has a configuration in which the release film, the pressure-sensitive adhesive layer, the optical functional film, the first surface protective film, and the second surface protective film are laminated in this order.
  • the second surface protective film may be the same surface protective film as the first surface protective film, or may be a surface protective film different from the first surface protective film.
  • the peeling force between the first surface protective film and the optical functional film may be larger than the peeling force between the second surface protective film and the first surface protective film.
  • the second surface protective film can be peeled more smoothly.
  • the optical functional film may be a polarizing film.
  • the polarizing film may have a thickness of 60 ⁇ m or less.
  • the polarizing film may have a polarizer having a thickness of 10 ⁇ m or less.
  • the first surface protective film may have a first base film and a first pressure-sensitive adhesive layer, and may be laminated on the optical functional film via the first pressure-sensitive adhesive layer.
  • the first surface protective film may be a self-adhesive film.
  • the second surface protective film may have a second base film and a second pressure-sensitive adhesive layer, and may be laminated on the first surface protective film via the second pressure-sensitive adhesive layer.
  • the second surface protective film may be a self-adhesive film.
  • the roll-shaped optical film has a width corresponding to a pair of opposing sides of the optical cell
  • the sheet-like optical film has a pair of opposing sides of the optical cell. It may have a length corresponding to one set of opposing sides, and another set of opposing sides may have a length corresponding to another set of opposing sides of the optical cell.
  • the roll-shaped optical film and the sheet-shaped optical film are configured such that the pressure-sensitive adhesive layer, the optical functional film, and the first surface protective film are laminated in this order on one surface of the optical cell. It may be used to manufacture an optical display panel.
  • the roll-shaped optical film is used to manufacture the optical display panel by a roll-to-panel method
  • the sheet-like optical film is a sheet-to-panel method. May be used to manufacture.
  • the sheet-like optical film is determined as a defective product among the optical display panels manufactured by the roll-to-panel method using the roll-shaped optical film, and the pressure-sensitive adhesive is used.
  • the adhesive layer, the optical functional film, and the first surface protective film are laminated in this order on one surface of the optical cell of the optical display panel from which the layer, the optical functional film, and the first surface protective film are peeled off. It may be used to remanufacture the optical display panel.
  • the “roll-to-panel method” is a method in which a release film is peeled off from an optical film drawn out from a roll-shaped optical film, and the optical film is bonded to an optical cell through an exposed adhesive layer.
  • a release film is peeled off from an optical film drawn out from a roll-shaped optical film, and the optical film is bonded to an optical cell through an exposed adhesive layer.
  • the optical film may be formed with cuts in the width direction before being fed out from the roll, and may be formed in the width direction after being fed out and before peeling of the release film.
  • Sheet-to-panel method is a method in which a release film is peeled off from an optical film that has been in a single wafer state, and the optical film is bonded to an optical cell through an exposed adhesive layer.
  • Another invention is a method for producing the optical film set, wherein the method for producing the roll-shaped optical film comprises: A step of preparing an optical film raw material having a configuration in which the release film, the pressure-sensitive adhesive layer, the optical functional film, and the first surface protective film are laminated in this order; Slitting and winding the optical film original fabric to produce the roll-shaped optical film, and A method for producing the sheet-like optical film, Bonding the second surface protective film original fabric to the first surface protective film side of the optical film original material, and producing an optical film original material laminated with a second surface protective film; Cutting the original optical film on which the second surface protective film is laminated to produce a sheet-like optical film.
  • the “cutting process” is not limited as long as the optical film original is processed into a sheet-like optical film through a cutting process, and the end face is cut into pieces and cut into pieces. It refers to processing including processing, slitting the optical film original to a predetermined width and then cutting in the width direction (however, the end face is not processed).
  • Another invention is a double-sided optical film set having a first optical film set and a second optical film set
  • the first optical film set includes a roll-shaped first optical film and a sheet-shaped first optical film
  • the roll-shaped first optical film has a configuration in which a first release film, a first pressure-sensitive adhesive layer, a first optical functional film, and a first surface protective film are laminated in this order
  • the sheet-like first optical film has the first release film, the first pressure-sensitive adhesive layer, the first optical functional film, the first surface protective film, and the second surface protective film laminated in this order.
  • the second optical film set includes a roll-shaped second optical film and a sheet-shaped second optical film
  • the roll-shaped second optical film has a configuration in which a second release film, a second pressure-sensitive adhesive layer, a second optical function film, and a third surface protective film are laminated in this order, In the sheet-like second optical film, the second release film, the second pressure-sensitive adhesive layer, the second optical functional film, the third surface protective film, and the fourth surface protective film are laminated in this order. It is a configuration.
  • the roll-shaped first optical film and the single-wafer-shaped first optical film, and the roll-shaped second optical film and the single-wafer-shaped second optical film are provided on one surface of the optical cell.
  • the first pressure-sensitive adhesive layer, the first optical function film, and the first surface protective film are laminated in this order, and the second pressure-sensitive adhesive layer, the second optical function film, and the second surface of the optical cell. You may use for manufacturing the optical display panel of the structure by which the 3rd surface protection film was laminated
  • the first optical functional film and the second optical functional film may have the same optical function or may have different optical functions.
  • the method for producing the roll-shaped first optical film comprises: Preparing a first optical film original fabric having a configuration in which the first release film, the first pressure-sensitive adhesive layer, the first optical functional film, and the first surface protective film are laminated in this order; Slitting the first optical film raw material, and winding it to produce the roll-shaped first optical film, and may include,
  • the method for producing the sheet-like first optical film comprises: Bonding the second surface protective film original to the first surface protective film side of the first optical film original, and producing a second optical film original laminated with a second surface protective film; Cutting the second optical film raw material on which the second surface protective film is laminated to produce a sheet-shaped first optical film,
  • a method for producing the roll-shaped second optical film Preparing a second optical film original fabric having a configuration in which the second release film, the second pressure-sensitive adhesive layer, the second optical functional film, and the third surface protective film are laminated in this order; And slitting the second optical film original fabric and wind
  • the absorption axis direction of the polarizing film is there is no particular limitation as long as the achievement of the object of the invention is not hindered.
  • a roll-shaped optical film first In the optical film, the second optical film
  • the optical film original fabric first optical film original fabric, second optical film original fabric
  • the polarizing film may have an absorption axis direction parallel to the longitudinal direction and orthogonal. Alternatively, it may be oblique (for example, a direction that forms an angle of 45 ° with respect to the longitudinal direction).
  • the absorption axis direction of the rectangular sheet-like polarizing film may be parallel to the longitudinal direction, may be orthogonal, or may be oblique (for example, a direction that forms an angle of 45 ° with respect to the longitudinal direction).
  • the absorption axis direction of the square sheet-like polarizing film may be parallel to an arbitrary side or may be oblique (for example, a direction that forms an angle of 45 ° with respect to the side).
  • the roll-shaped optical film is such that the pressure-sensitive adhesive layer, the optical functional film, and the surface protective film are opposed to the optical cell in the direction (width direction) perpendicular to the longitudinal direction of the optical film while leaving the release film. Cuts may be formed at intervals corresponding to another set of sides. According to this configuration, it is not necessary to cut (half-cut) the optical film in the roll-to-panel method.
  • the optical cell may be a VA mode or IPS mode liquid crystal cell or an organic EL cell.
  • the shape of the optical cell is not particularly limited as long as it has a pair of opposing sides and another pair of opposing sides, and may be square or rectangular. In general, one set of opposing sides of the optical cell and another set of opposing sides are orthogonal to each other.
  • the optical film set of the present invention is used to manufacture an optical display panel having the same configuration.
  • a roll-shaped optical film is used in a roll-to-panel system.
  • a sheet-like optical film is used in a sheet-to-panel system.
  • the sheet-like optical film has the same laminated structure as the roll-like optical film except that the second surface protective film is provided.
  • a roll-shaped optical film uses a roll-to-panel method to produce an optical display panel having a structure in which an adhesive layer, an optical functional film, and a first surface protective film are laminated in this order on one surface of an optical cell. Used to do.
  • the sheet-like optical film provided with the second surface protective film has improved handling properties, the sheet-to-panel method is used while suppressing the occurrence of twisting and curling.
  • the optical display panel having the same configuration can be used even when the roll-to-panel method and the sheet-to-panel method are used together when the optical film is bonded to the optical cell. Can be suitably manufactured.
  • Schematic diagram showing a method for producing a roll-shaped first optical film The schematic diagram which shows the method of manufacturing a sheet-like 1st optical film Schematic of the continuous manufacturing system of the optical display panel of Embodiment 4.
  • Diagram showing remanufacturing process Schematic of the continuous manufacturing system of the optical display panel of Embodiment 5.
  • FIG. 1 is a schematic diagram showing an optical film set.
  • the side surface, plane, and partial cross-sectional enlarged view of the roll-shaped first optical film 1 are shown in the upper part of FIG.
  • the side surface, plane, and partial cross-sectional enlarged view of the sheet-like first optical film 2 are shown in the lower part of FIG.
  • a first release film 11 a first pressure-sensitive adhesive layer 12, a first optical functional film 13, and a first surface protective film 14 are laminated in this order.
  • the roll-shaped first optical film 1 is used for manufacturing an optical display panel by a roll-to-panel method.
  • the strip-shaped first optical film 10 having a width a that is fed out from the roll-shaped first optical film 1 is cut by the cutting means C at a predetermined interval b, leaving the release film 11.
  • Reference numeral s denotes a cut formed in the first optical film 30 by the above cutting.
  • the sheet-like first optical film 2 includes a first release film 21, a first pressure-sensitive adhesive layer 22, a first optical functional film 23, a first surface protective film 24, and a second surface protective film 25 laminated in this order.
  • the size of the sheet-like first optical film 2 is vertical a and horizontal b.
  • the sheet-like first optical film 2 is used for manufacturing an optical display panel by a sheet-to-panel method.
  • the first release film 11 and the first release film 21 have the same configuration.
  • the 1st adhesive layer 12 and the 1st adhesive layer 22 are the same structures.
  • the first optical functional film 13 and the first optical functional film 23 have the same configuration.
  • the 1st surface protection film 14, the 1st surface protection film 24, and the 2nd surface protection film 25 are the same structures.
  • the “same configuration” is not limited as long as the materials, thicknesses, and the like completely match, but may be substantially the same (for example, the same in terms of manufacturing quality).
  • the first surface protective film 14 has a first base film and a first pressure-sensitive adhesive layer, and the first optical functional film 13 (or 23) via the first pressure-sensitive adhesive layer. ).
  • the first surface protective film 14 (or 24) may be a self-adhesive film.
  • the second surface protective film 25 has a second base film and a second pressure-sensitive adhesive layer, and is laminated on the first surface protective film 24 via the second pressure-sensitive adhesive layer.
  • the second surface protective film 25 may be a self-adhesive film.
  • the peeling force between the first surface protective film 24 and the first optical functional film 23 is larger than the peeling force between the second surface protective film 25 and the first surface protective film 24. According to this, the 2nd surface protection film 25 can be peeled more smoothly.
  • a tensile tester can be used as the measurement of the peeling force. The peeling condition is measured by 180 ° peeling at 0.3 m / min. The peeling force is controlled by the composition and thickness of the pressure-sensitive adhesive.
  • the magnitude relationship of the peeling force between each layer in the sheet-like 1st optical film 2 is as follows. Delamination force A between the first release film 21 and the first pressure-sensitive adhesive layer 22; Delamination force B between the first pressure-sensitive adhesive layer 22 and the first optical functional film 23, Delamination force C between the first optical functional film 23 and the first surface protective film 24; In the case of the delamination force D between the first surface protective film 24 and the second surface protective film 25, A ⁇ B, A ⁇ C, A ⁇ D.
  • the second surface protective film can be prevented from peeling off when the first release film is peeled off.
  • the first optical functional films 13 and 23 are not particularly limited as long as they are films having optical functions, and examples thereof include a polarizing film, a retardation film, a brightness enhancement film, and a diffusion film, but are typically polarizing films. .
  • a polarizing film having a thickness (total thickness) of 60 ⁇ m or less, more preferably 55 ⁇ m or less, and further preferably 50 ⁇ m or less.
  • a polarizing film for example, (1) a configuration in which protective films (sometimes referred to as “polarizer protective films”) are laminated on both sides of a polarizer (sometimes referred to as “both protective polarizing films”). (2) A structure in which a protective film is laminated only on one side of a polarizer (sometimes referred to as a “single protective polarizing film”).
  • Polarizer A polarizer using a polyvinyl alcohol-based resin is used.
  • polarizers include dichroic iodine and dichroic dyes on hydrophilic polymer films such as polyvinyl alcohol films, partially formalized polyvinyl alcohol films, and ethylene / vinyl acetate copolymer partially saponified films.
  • hydrophilic polymer films such as polyvinyl alcohol films, partially formalized polyvinyl alcohol films, and ethylene / vinyl acetate copolymer partially saponified films.
  • examples thereof include polyene-based oriented films such as those obtained by adsorbing substances and uniaxially stretched, polyvinyl alcohol dehydrated products and polyvinyl chloride dehydrochlorinated products.
  • a polarizer composed of a polyvinyl alcohol film and a dichroic material such as iodine is preferable.
  • a polarizer obtained by dyeing a polyvinyl alcohol film with iodine and uniaxially stretching it can be produced, for example, by dyeing polyvinyl alcohol in an aqueous iodine solution and stretching it 3 to 7 times the original length. If necessary, it may contain boric acid, zinc sulfate, zinc chloride, or the like, or may be immersed in an aqueous solution such as potassium iodide. Further, if necessary, the polyvinyl alcohol film may be immersed in water and washed before dyeing.
  • Stretching may be performed after dyeing with iodine, may be performed while dyeing, or may be dyed with iodine after stretching.
  • the film can be stretched even in an aqueous solution such as boric acid or potassium iodide or in a water bath.
  • the thickness of the polarizer is preferably 10 ⁇ m or less from the viewpoint of thinning, more preferably 8 ⁇ m or less, further 7 ⁇ m or less, and further preferably 6 ⁇ m or less.
  • the thickness of the polarizer is preferably 2 ⁇ m or more, and more preferably 3 ⁇ m or more.
  • Such a thin polarizer has less thickness unevenness, excellent visibility, and less dimensional change, and therefore excellent durability against thermal shock.
  • a polarizing film including a polarizer having a thickness of 10 ⁇ m or less has a significantly low waist (elastic modulus), and therefore, there is a high possibility of twisting and curling in the sheet-to-panel system. Therefore, the present invention is particularly suitable for the polarizing film.
  • Patent No. 4751486 Japanese Patent No. 4751481, Patent No. 4815544, Patent No. 5048120, International Publication No. 2014/077599 pamphlet, International Publication No. 2014/077636 Pamphlet, And the thin polarizers obtained from the production methods described therein.
  • the polarizer has an optical characteristic expressed by a single transmittance T and a polarization degree P of the following formula: P> ⁇ (10 0.929T-42.4 ⁇ 1) ⁇ 100 (where T ⁇ 42.3), Or P ⁇ 99.9 (however, T ⁇ 42.3) It is preferable to be configured to satisfy the above condition.
  • a polarizer configured so as to satisfy the above-described conditions uniquely has performance required as a display for a liquid crystal television using a large display element. Specifically, the contrast ratio is 1000: 1 or more and the maximum luminance is 500 cd / m 2 or more. As other uses, for example, it is bonded to the viewing side of the organic EL cell.
  • Patent No. 4751486, Patent in that it can be stretched at a high magnification and the polarization performance can be improved.
  • stretching in a boric-acid aqueous solution as described in the 4751481 specification and the patent 4815544 specification is preferable, and it describes especially in the patent 4751481 specification and the patent 4815544 specification.
  • stretching in the boric-acid aqueous solution which has this is preferable.
  • These thin polarizers can be obtained by a production method including a step of stretching a polyvinyl alcohol-based resin (hereinafter also referred to as PVA-based resin) layer and a stretching resin base material in a laminated state and a step of dyeing.
  • PVA-based resin polyvinyl alcohol-based resin
  • a stretching resin base material in a laminated state
  • dyeing a step of dyeing
  • polarizer protective film As a material constituting the protective film, a material excellent in transparency, mechanical strength, thermal stability, moisture barrier property, isotropy and the like is preferable.
  • polyester polymers such as polyethylene terephthalate and polyethylene naphthalate
  • cellulose polymers such as diacetyl cellulose and triacetyl cellulose
  • acrylic polymers such as polymethyl methacrylate
  • styrene such as polystyrene and acrylonitrile / styrene copolymer (AS resin)
  • AS resin acrylonitrile / styrene copolymer
  • polyethylene, polypropylene, polyolefins having a cyclo or norbornene structure, polyolefin polymers such as ethylene / propylene copolymers, vinyl chloride polymers, amide polymers such as nylon and aromatic polyamide, imide polymers, sulfone polymers , Polyether sulfone polymer, polyether ether ketone polymer, polyphenylene sulfide polymer, vinyl alcohol polymer, vinylidene chloride polymer, vinyl butyral polymer, arylate polymer, polyoxymethylene polymer, epoxy polymer, or the above Polymer blends and the like can also be mentioned as examples of the polymer forming the protective film.
  • thermoplastic resin in the transparent protective film is preferably 50 to 100% by weight, more preferably 50 to 99% by weight, still more preferably 60 to 98% by weight, and particularly preferably 70 to 97% by weight. .
  • content of the said thermoplastic resin in a transparent protective film is 50 weight% or less, there exists a possibility that the high transparency etc. which a thermoplastic resin originally has cannot fully be expressed.
  • a retardation film As the protective film, a retardation film, a brightness enhancement film, a diffusion film, and the like can also be used.
  • a functional layer such as a hard coat layer, an antireflection layer, an antisticking layer, a diffusion layer or an antiglare layer can be provided on the surface of the protective film where the polarizer is not adhered.
  • the functional layers such as the hard coat layer, antireflection layer, antisticking layer, diffusion layer and antiglare layer can be provided on the transparent protective film itself, and separately provided separately from the transparent protective film. You can also
  • the protective film and the polarizer are laminated via an intervening layer such as an adhesive layer, an adhesive layer, and an undercoat layer (primer layer). At this time, it is desirable that the both are laminated without an air gap by an intervening layer.
  • the adhesive layer is formed of an adhesive.
  • the type of the adhesive is not particularly limited, and various types can be used.
  • the adhesive layer is not particularly limited as long as it is optically transparent. Examples of the adhesive include water-based, solvent-based, hot-melt-based, active energy ray-curable types, and the like. Or an active energy ray hardening-type adhesive agent is suitable.
  • the water-based adhesive examples include an isocyanate-based adhesive, a polyvinyl alcohol-based adhesive, a gelatin-based adhesive, a vinyl-based latex, and a water-based polyester.
  • the water-based adhesive is usually used as an adhesive composed of an aqueous solution, and usually contains 0.5 to 60% by weight of solid content.
  • the active energy ray curable adhesive is an adhesive that cures by an active energy ray such as an electron beam or ultraviolet rays (radical curable type, cationic curable type), for example, in an electron beam curable type or an ultraviolet curable type. Can be used.
  • an active energy ray curable adhesive for example, a photo radical curable adhesive can be used.
  • the photo radical curable active energy ray curable adhesive is used as an ultraviolet curable adhesive, the adhesive contains a radical polymerizable compound and a photo polymerization initiator.
  • an easily bonding layer can be provided between a transparent protective film and an adhesive bond layer.
  • the easy adhesion layer can be formed of, for example, various resins having a polyester skeleton, a polyether skeleton, a polycarbonate skeleton, a polyurethane skeleton, a silicone-based, a polyamide skeleton, a polyimide skeleton, a polyvinyl alcohol skeleton, and the like. These polymer resins can be used alone or in combination of two or more. Moreover, you may add another additive for formation of an easily bonding layer. Specifically, a stabilizer such as a tackifier, an ultraviolet absorber, an antioxidant, and a heat resistance stabilizer may be used.
  • the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive.
  • Various pressure-sensitive adhesives can be used as the pressure-sensitive adhesive, such as rubber-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, vinyl alkyl ether-based pressure-sensitive adhesives, polyvinylpyrrolidone-based pressure-sensitive adhesives, Examples include acrylamide-based adhesives and cellulose-based adhesives.
  • An adhesive base polymer is selected according to the type of the adhesive.
  • acrylic pressure-sensitive adhesives are preferably used because they are excellent in optical transparency, exhibit appropriate wettability, cohesiveness, and adhesive pressure-sensitive adhesive properties, and are excellent in weather resistance and heat resistance.
  • the undercoat layer (primer layer) is formed to improve the adhesion between the polarizer and the protective film.
  • the material constituting the primer layer is not particularly limited as long as the material exhibits a certain degree of strong adhesion to both the base film and the polyvinyl alcohol-based resin layer.
  • a thermoplastic resin excellent in transparency, thermal stability, stretchability, etc. is used.
  • the thermoplastic resin include an acrylic resin, a polyolefin resin, a polyester resin, a polyvinyl alcohol resin, or a mixture thereof.
  • a 1st, 2nd surface protection film is provided in the single side
  • a film material having isotropic property or close to isotropic property is selected from the viewpoints of inspection property and manageability.
  • film materials include polyester resins such as polyethylene terephthalate film, cellulose resins, acetate resins, polyether sulfone resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, acrylic resins, and the like.
  • the base film can be used as a laminate of one kind or two or more kinds of film materials, and a stretched product of the film can also be used.
  • the thickness of the base film is preferably 10 ⁇ m to 150 ⁇ m, more preferably 20 to 100 ⁇ m.
  • the base film can be used as a self-adhesive film, and a film having the base film and an adhesive layer can be used.
  • those having an adhesive layer are preferably used from the viewpoint of protecting an optical functional film such as a polarizing film.
  • Examples of the pressure-sensitive adhesive layer used for laminating the first and second surface protective films include (meth) acrylic polymers, silicone polymers, polyesters, polyurethanes, polyamides, polyethers, fluorine-based and rubber-based polymers.
  • a pressure-sensitive adhesive as a base polymer can be appropriately selected and used. From the viewpoints of transparency, weather resistance, heat resistance and the like, an acrylic pressure-sensitive adhesive having an acrylic polymer as a base polymer is preferable.
  • the thickness (dry film thickness) of the pressure-sensitive adhesive layer is determined according to the required adhesive force. Usually, it is about 1 to 100 ⁇ m, preferably 5 to 50 ⁇ m.
  • the first and second surface protective films may be provided with a release treatment layer on the surface opposite to the surface on which the pressure-sensitive adhesive layer is provided with a low adhesive material such as silicone treatment, long-chain alkyl treatment, or fluorine treatment. it can.
  • Adhesives include rubber adhesives, acrylic adhesives, silicone adhesives, urethane adhesives, vinyl alkyl ether adhesives, polyvinyl alcohol adhesives, polyvinyl pyrrolidone adhesives, polyacrylamide adhesives, Examples thereof include cellulose-based pressure-sensitive adhesives.
  • pressure-sensitive adhesives those having excellent optical transparency, suitable wettability, cohesiveness, and adhesive pressure characteristics, and excellent weather resistance and heat resistance are preferably used.
  • An acrylic pressure-sensitive adhesive is preferably used as one exhibiting such characteristics.
  • a release film obtained by removing the pressure-sensitive adhesive (applied to a separator and the like, and after removing the polymerization solvent and the like to form a pressure-sensitive adhesive layer
  • a method of transferring to a polarizer (or transparent protective film) or a method of applying the adhesive to the polarizer (or transparent protective film) and drying and removing the polymerization solvent to form an adhesive layer on the polarizer By a method of transferring to a polarizer (or transparent protective film) or a method of applying the adhesive to the polarizer (or transparent protective film) and drying and removing the polymerization solvent to form an adhesive layer on the polarizer.
  • one or more solvents other than the polymerization solvent may be added as appropriate.
  • a silicone release liner is preferably used as the release film after the release treatment.
  • an appropriate method may be adopted as appropriate according to the purpose.
  • a method of heating and drying the coating film is used.
  • the heating and drying temperature is preferably 40 ° C to 200 ° C, more preferably 50 ° C to 180 ° C, and particularly preferably 70 ° C to 170 ° C. By setting the heating temperature within the above range, an adhesive having excellent adhesive properties can be obtained.
  • the drying time is preferably 5 seconds to 20 minutes, more preferably 5 seconds to 10 minutes, and particularly preferably 10 seconds to 5 minutes.
  • first pressure-sensitive adhesive layers 12 and 22 Various methods are used for forming the first pressure-sensitive adhesive layers 12 and 22. Specifically, for example, roll coat, kiss roll coat, gravure coat, reverse coat, roll brush, spray coat, dip roll coat, bar coat, knife coat, air knife coat, curtain coat, lip coat, die coater, etc. Examples thereof include an extrusion coating method.
  • the thickness of the first pressure-sensitive adhesive layers 12 and 22 is not particularly limited, and is about 1 to 100 ⁇ m, for example.
  • the thickness is preferably 2 to 50 ⁇ m, more preferably 2 to 40 ⁇ m, and still more preferably 5 to 35 ⁇ m.
  • the first release films 11 and 21 protect the pressure-sensitive adhesive layer until practical use.
  • the constituent material of the release film include plastic films such as polyethylene, polypropylene, polyethylene terephthalate, and polyester films, porous materials such as paper, cloth, and nonwoven fabric, nets, foam sheets, metal foils, and laminates thereof.
  • a plastic film is preferably used from the viewpoint of excellent surface smoothness.
  • the plastic film is not particularly limited as long as it can protect the pressure-sensitive adhesive layer.
  • a polyethylene film, a polypropylene film, a polybutene film, a polybutadiene film, a polymethylpentene film, a polyvinyl chloride film, and a vinyl chloride co-polymer are used.
  • examples thereof include a polymer film, a polyethylene terephthalate film, a polybutylene terephthalate film, a polyurethane film, and an ethylene-vinyl acetate copolymer film.
  • the thickness of the first release films 11 and 21 is usually about 5 to 200 ⁇ m, preferably about 5 to 100 ⁇ m.
  • mold release and antifouling treatment with a silicone type, fluorine type, long chain alkyl type or fatty acid amide type release agent, silica powder, etc., coating type, kneading type, vapor deposition type It is also possible to carry out antistatic treatment such as.
  • the release property from the pressure-sensitive adhesive layer can be further improved by appropriately performing a release treatment such as silicone treatment, long-chain alkyl treatment, or fluorine treatment on the surface of the release film.
  • the double-sided optical film set of Embodiment 2 includes a first optical film set and a second optical film set. Since the first optical film set is the same as the first optical film set of Embodiment 1, description thereof is omitted.
  • the second optical film set will be described with reference to FIG.
  • the second optical film set includes a roll-shaped second optical film 3 and a sheet-shaped second optical film 4.
  • FIG. 2 shows an enlarged side view, a plane, and a partial cross-sectional view of the roll-shaped second optical film 3 at the top.
  • the side surface, plane, and partial cross-sectional enlarged view of the sheet-like second optical film 4 are shown in the lower part of FIG.
  • a second release film 31 In the roll-shaped second optical film 3, a second release film 31, a second pressure-sensitive adhesive layer 32, a second optical function film 33, and a third surface protective film 34 are laminated in this order.
  • the strip-shaped optical film 30 having a width b fed out from the roll-shaped second optical film 3 is cut by the cutting means C at a predetermined interval a while leaving the second release film 31.
  • the symbol s is a cut formed in the optical film 30 by the above cutting.
  • the sheet-like second optical film 4 includes a second release film 41, a second pressure-sensitive adhesive layer 42, a second optical function film 43, a third surface protective film 44, and a fourth surface protective film 45 laminated in this order.
  • the size of the second optical film 4 in a single wafer state is a horizontal a and a vertical b.
  • the second release film 31 and the second release film 41 have the same configuration.
  • the 2nd adhesive layer 32 and the 2nd adhesive layer 42 are the same structures.
  • the second optical functional film 33 and the second optical functional film 43 have the same configuration.
  • the third surface protective film 34, the third surface protective film 44, and the fourth surface protective film 45 have the same configuration.
  • the “same configuration” is not limited as long as the materials, thicknesses, and the like completely match, but may be substantially the same (for example, the same in terms of manufacturing quality).
  • the third surface protective film 34 (or 44) has a third base film and a third pressure-sensitive adhesive layer, and the second optical function film 33 (or 43) via the third pressure-sensitive adhesive layer. ).
  • the third surface protective film 34 (or 44) may be a self-adhesive film.
  • the fourth surface protective film 45 has a fourth base film and a fourth pressure-sensitive adhesive layer, and is laminated on the third surface protective film 34 via the fourth pressure-sensitive adhesive layer.
  • the fourth surface protective film 45 may be a self-adhesive film.
  • the peeling force between the third surface protective film 34 and the second optical functional film 33 is larger than the peeling force between the fourth surface protective film 45 and the third surface protective film 44. According to this, the 4th surface protection film 45 can be peeled more smoothly.
  • the magnitude relationship of the peeling force between each layer in the sheet-like second optical film 4 is as follows. Delamination force A1 between the second release film 41 and the second pressure-sensitive adhesive layer 42, Delamination force B1 between the second pressure-sensitive adhesive layer 42 and the second optical functional film 43, Delamination force C1 between the second optical functional film 43 and the third surface protective film 44, In the case of the delamination force D1 between the third surface protective film 44 and the fourth surface protective film 45, A1 ⁇ B1, A1 ⁇ C1, and A ⁇ D1.
  • the members constituting the roll-shaped second optical film and the sheet-shaped second optical film in the second optical film set are the optical functional film, release film, pressure-sensitive adhesive layer, and surface protective film described in the first embodiment. The same configuration may be used.
  • FIG. 3A is a schematic diagram showing a method for producing a roll-shaped first optical film 1.
  • FIG. 3B is a schematic view showing a method for producing the sheet-like first optical film 2.
  • a roll-shaped first optical film original 5 having a configuration in which a first release film, a first pressure-sensitive adhesive layer, a first optical functional film, and a first surface protective film are laminated in this order is prepared.
  • the first optical film is unwound from the first optical film 5 and slit into three strip-shaped optical films with a predetermined width a using the slit cut part sc.
  • the three strip-shaped optical films that have been slit are each wound to produce a roll-shaped first optical film.
  • both ends e1 and e2 are trimmed (end trimming). However, either one of the ends may be trimmed or both ends may not be trimmed.
  • the 2nd surface protection film 25 extended
  • a bonding means a pair of bonding rolls R1 and R2
  • the optical film original fabric S2 on which the second surface protective film 25 is laminated is fully cut at a predetermined interval b by using the cutting means FC, and the sheet-like first optical film 2 is manufactured.
  • the sheet-like first optical film 2 may be stored in a predetermined storage unit or may be laminated on a carrier film.
  • the first optical film set can be manufactured by the above method.
  • a step of winding the optical film original fabric S2 and a belt-shaped first optical film from the optical film original fabric S2 may be fed and cut at a predetermined interval b using the cutting means FC.
  • the second optical film set may be manufactured in the same process as in FIGS. 3A and 3B.
  • the adhesive layer 12, the first optical function film, and the first surface protective film are cut (half cut) at a predetermined interval, leaving the strip-shaped first release film 11.
  • a step of forming a plurality of cuts may be further included.
  • the liquid crystal cell has a structure in which a liquid crystal layer is sealed between a pair of substrates (a first substrate (viewing side surface) Pa and a second substrate (back surface) Pb) disposed to face each other.
  • a liquid crystal layer is sealed between a pair of substrates (a first substrate (viewing side surface) Pa and a second substrate (back surface) Pb) disposed to face each other.
  • VA vertical alignment
  • IPS in-plane switching
  • a liquid crystal display panel has a polarizing film bonded to one or both sides of a liquid crystal cell, and a drive circuit is incorporated as necessary.
  • Organic EL cell (Organic EL cell, organic EL display panel)
  • the organic EL cell has a configuration in which an electroluminescent layer is sandwiched between a pair of electrodes.
  • an arbitrary type such as a top emission method, a bottom emission method, a double emission method, or the like can be used.
  • the organic EL display panel has a polarizing film bonded to one or both sides of an organic EL cell, and a drive circuit is incorporated as necessary.
  • FIG. 4 is a schematic diagram of a continuous manufacturing system of an optical display panel.
  • the roll-shaped first optical film 1 is used to manufacture an optical display panel by a roll-to-panel method.
  • the sheet-shaped first optical film 2 is determined as a defective product among the optical display panels manufactured using the roll-shaped first optical film 1, and the first pressure-sensitive adhesive layer, the first optical functional film, and the first Remanufacturing an optical display panel having a structure in which a first pressure-sensitive adhesive layer, a first optical functional film, and a first surface protective film are laminated in this order on one surface of an optical cell of the optical display panel from which the surface protective film has been peeled off. Used to do.
  • a sheet-like first optical element is formed on one surface of the optical cell from which the first pressure-sensitive adhesive layer 22, the first optical functional film 23, and the first surface protective film 24 have been peeled by a sheet-to-panel method.
  • the first release film 21 is peeled from the film 2 and the first pressure-sensitive adhesive layer 22, the first optical function film 23, the first surface protective film 24, and the second surface protective film 25 are bonded together in this order, The surface protective film 25 is peeled off.
  • a liquid crystal cell will be described as an example of an optical cell, and a liquid crystal display panel will be described as an example of an optical display panel.
  • the roll-shaped first optical film 1 includes a first release film 11, a first pressure-sensitive adhesive layer 12, a first optical functional film 13, and a first surface protective film 14 that are laminated in this order. As shown in FIG. 1, the roll-shaped first optical film 1 has a width a and a width corresponding to the long side of the liquid crystal panel (substantially shorter than the long side of the liquid crystal cell P).
  • the liquid crystal display panel manufacturing system has a first transport unit 81 that transports the liquid crystal cell P to the first pasting unit 64, and a roll-shaped first surface P1 of the liquid crystal cell P. It has the 2nd conveyance part 82 which conveys liquid crystal cell P after sticking an optical film using the 1st optical film 1.
  • Each transport unit includes a plurality of transport rollers R for transporting the liquid crystal cell P by rotating around a rotation axis parallel to a direction orthogonal to the transport direction.
  • a suction plate or the like may be included.
  • the liquid crystal cell P is disposed in the first transport unit 81 from the storage unit 91 that stores the liquid crystal cell P so that the first surface P1 is the top surface, and is transported to the first pasting unit 64 by the rotation of the transport roller R.
  • the strip-shaped first optical film 10 drawn out from the roll-shaped first optical film 1 is left without cutting the first release film 11 at the cutting portion 61 while adsorbing and fixing the first release film 11 side.
  • the strip-shaped pressure-sensitive adhesive layer 12, the strip-shaped first optical functional film 13, and the strip-shaped first surface protective film 14 are of a predetermined size (length corresponding to the short side of the liquid crystal cell P (substantially shorter than the short side). ))
  • Examples of the cutting by the cutting unit 61 include cutting using a blade (cutting with a cutting blade) and cutting with a laser device. An example of the cut portion s after being cut is indicated by an arrow in FIG.
  • nip roller (not shown) is arranged on the upstream side or the downstream side of the cutting unit 61 and conveys the belt-shaped first optical film 10 may be adopted. Note that nip rollers may be arranged on the upstream side and the downstream side of the cutting portion 61.
  • a first tension adjusting unit for enabling continuous processing so that the processing is not interrupted for a long time in the cutting processing of the strip-shaped first optical film 10 and the subsequent sticking processing and for adjusting the slackness of the film. 62 is provided.
  • the first tension adjusting unit 62 includes a dancer mechanism using a weight, for example.
  • a configuration in which a nip roller (not shown) is disposed on the upstream side or the downstream side of the first tension adjusting unit 62 and conveys the first optical film 10 may be employed. Note that the nip rollers may be arranged on the upstream side and the downstream side of the first tension adjusting unit 62.
  • the first optical film 10 is wound around the first peeling portion 63 and reversed, and the first optical film 10 is peeled from the first release film 11.
  • the first release film 11 is wound on a roll by the first winding unit 65.
  • the 1st winding part 65 has a roll and a rotation drive part, and winds the 1st release film 11 to a roll, when a rotation drive part rotates a roll.
  • the structure which a nip roller not shown is arrange
  • the first pasting portion 64 conveys the liquid crystal cell P while the first optical film 10 from which the first release film 11 has been peeled off the first surface P1 of the liquid crystal cell P via the first adhesive layer 12. And paste.
  • the 1st sticking part 64 is comprised by a pair of 1st roller 64a and the 2nd roller 64b. Either one may be a driving roller and the other may be a driven roller, and both rollers may be driving rollers.
  • the first optical film 10 is attached to the first surface P1 of the liquid crystal cell P by feeding the first optical film 10 and the liquid crystal cell P to the downstream while sandwiching the first optical film 10 and the liquid crystal cell P by the pair of first roller 64a and second roller 64b.
  • the liquid crystal cell P after the sheet-shaped first optical film 10 is attached to the first surface P1 of the liquid crystal cell P is transported downstream by the second transport unit 82.
  • the first inspection unit 70 optically inspects the liquid crystal cell P.
  • the first inspection unit 70 is disposed on one side of the liquid crystal cell P, and is disposed on the opposite side of the light source with the liquid crystal cell P sandwiched between the light source 71 that transmits light to the liquid crystal cell P, and is transmitted through the liquid crystal cell P.
  • It has the 1st imaging part 72 which images a light image.
  • the first imaging unit 72 may be an area sensor or a line sensor.
  • inspection part 70 may have a 2nd imaging part (not shown) which images the reflected light image for test
  • the image captured by the first inspection unit 70 is subjected to image analysis by the first image analysis unit 51.
  • the control unit 50 controls operation timing of each component of the continuous manufacturing system.
  • the first determination unit 52 determines whether the liquid crystal cell P is a good product or a defective product based on the result of analyzing the image by the first image analysis unit 51. Examples of defective products include sticking misalignment and bubble mixing.
  • the liquid crystal cell P determined to be defective is collected by the first non-defective product collecting unit 92.
  • the liquid crystal cell P determined as a defective product is collected by the first defective product collection unit 93.
  • the 1st optical film 10 is removed from the liquid crystal cell P by which the 1st determination part 52 determined defective.
  • the removal process may be performed manually or by a peeling device.
  • the sheet-shaped first optical film 2 is attached to the first surface P1 of the liquid crystal cell P and remanufactured (sometimes referred to as “rework”) using a sheet-fitting device.
  • the sheet-like first optical film 2 from which the first release film 21 has been peeled off is peeled off from the first optical film 10 that has been determined to be defective by a sheet-to-panel method (for example, a sheet-fitting device). Affixed to the first surface P1 of the liquid crystal cell P after the heating.
  • a conventional apparatus can be used as the single wafer pasting apparatus. Reference is made to the sheet-like first optical film 2 of FIG.
  • the 2nd surface protection film 25 is peeled from the sheet-like 1st optical film 2 after a 1st resticking process.
  • the peeling treatment may be performed manually or with a peeling device.
  • the roll-shaped second optical film 3 is used for manufacturing an optical display panel by a roll-to-panel method.
  • the sheet-like second optical film 4 is determined to be defective among the optical display panels manufactured using the roll-shaped second optical film 3, and the second pressure-sensitive adhesive layer, the second optical functional film, and the third Remanufacturing an optical display panel having a structure in which the second pressure-sensitive adhesive layer, the second optical functional film, and the third surface protective film are laminated in this order on one surface of the optical cell of the optical display panel from which the surface protective film has been peeled off. Used to do.
  • the sheet-like second optical material is formed on one surface of the optical cell from which the second pressure-sensitive adhesive layer 31, the second optical functional film 32, and the third surface protective film 33 have been peeled by a sheet-to-panel method.
  • the second release film 41 is peeled from the film 4 and the second pressure-sensitive adhesive layer 42, the second optical function film 43, the third surface protective film 44, and the fourth surface protective film 45 are bonded together in this order, The surface protective film 45 is peeled off.
  • An optical display panel continuous manufacturing system includes a roll-to-panel manufacturing apparatus using the roll-shaped first optical film 1 and a roll-to-panel system using a roll-shaped second optical film 3.
  • the continuous manufacturing system of the optical display panel which added the manufacturing equipment of this is comprised.
  • the roll-to-panel manufacturing equipment using the roll-shaped second optical film 3 is composed of substantially the same equipment as the roll-to-panel manufacturing equipment using the roll-shaped first optical film 1. May be. The different manufacturing facilities are described below.
  • the liquid crystal cell P determined to be non-defective by the first inspection unit 70 is sent to the subsequent stage, and the optical cell is attached to the second surface P2 of the liquid crystal cell P using a roll-shaped second optical film.
  • a placement replacement unit (not shown) is installed in the second transport unit 82, and the placement replacement unit reverses the upper and lower surfaces (P1, P2) of the non-defective liquid crystal cell P transported by the second transport unit 82 in the transport direction. In FIG. 5, the short side and the long side of the liquid crystal cell P are switched.
  • a publicly known mechanism can be appropriately employed for the arrangement replacement unit.
  • the arrangement replacement unit includes a rotating unit that sucks the liquid crystal cell P and horizontally rotates it by 90 °, and an inversion unit that sucks the liquid crystal cell P and reverses the front and back.
  • the liquid crystal cell P is conveyed to the 2nd sticking part after the process of an arrangement
  • a second cutting part similar to the first cutting part 61, a second tension adjusting part similar to the first tension adjusting part 62, a second peeling part similar to the first peeling part 63, and a first winding part It has the same 2nd winding part.
  • the second cutting part cuts the second release film 31 while adsorbing and fixing the second release film 31 side of the belt-like second optical film 30 drawn out from the roll-like second optical film 3.
  • the second optical film 30 is left to be cut into a predetermined size (a length corresponding to the long side of the liquid crystal cell P (a length substantially shorter than the long side)).
  • the band-shaped second optical film 30 is conveyed to the second peeling portion via the second tension adjusting portion, wound around the second peeling portion and reversed, and the second optical film 30 is peeled from the second release film 31.
  • the second release film 31 is wound on a roll by the second winding unit.
  • the second pasting part has the same configuration as the first pasting part 64.
  • the second affixing unit affixes the second optical film 30 from which the second release film 31 has been peeled off to the second surface P2 of the liquid crystal cell P via the second adhesive layer 32 while conveying the liquid crystal cell P. wear.
  • the second inspection unit has the same configuration as the first inspection unit 70.
  • the second inspection unit optically inspects the liquid crystal cell P.
  • the second inspection unit is disposed on one side of the liquid crystal cell P, and is disposed on the opposite side of the light source with the liquid crystal cell P sandwiched between the light source that transmits the light to the liquid crystal cell P, and the transmitted light image of the liquid crystal cell P.
  • an imaging unit for imaging The second inspection unit may include an imaging unit (not shown) that captures a reflected light image for inspecting the attachment position of the second optical film 30. The image captured by the second inspection unit is subjected to image analysis by the second image analysis unit.
  • the second determination unit determines whether the liquid crystal cell P is a good product or a defective product based on the result of analyzing the image by the second image analysis unit. Examples of defective products include sticking misalignment and bubble mixing.
  • the liquid crystal cell P determined to be defective is collected by the second defect collection unit.
  • the non-defective product is determined by the second determination unit, the liquid crystal cell P determined to be non-defective is conveyed and stored in the non-defective storage unit.
  • the remanufacturing using the sheet-like optical film 4 is the same as the above-described remanufacturing using the sheet-like optical film 2. That is, the second optical film 30 is removed from the liquid crystal cell P determined to be defective. Next, the second optical film 30 determined as a defective product was peeled off from the sheet-like second optical film 4 from which the second release film 31 was peeled off by a sheet-to-panel method (for example, a single-wafer sticking apparatus). Affixed to the second surface P2 of the later liquid crystal cell P. Next, the fourth surface protective film 45 is peeled from the sheet-like second optical film 4.
  • Embodiment 5 Production of optical display panel using optical film roll and optical film set of sheet-like optical film
  • Embodiment 5 is a continuous manufacturing system of an optical display panel using an optical film set.
  • the continuous manufacturing system of the optical display panel according to the fifth embodiment will be specifically described with reference to FIG.
  • the first optical film 10 is attached to the first surface P1 of the liquid crystal cell P using the roll-shaped first optical film 1 by the same roll-to-panel method as in the fourth embodiment (see FIG. 4). 4 and 6 have the same function.
  • the liquid crystal cell P to which the first optical film 10 is attached is reversed by the arrangement replacement unit 821 so that the upper and lower surfaces (P1, P2) are reversed and the short side and the long side of the liquid crystal cell P are switched in the transport direction (y).
  • the sheet-like second optical film 4 is adsorbed by the adsorption unit 164a of the sheet-fitting device 164 and supplied to the bonding position.
  • the second release film 41 is peeled off from the sheet-like second optical film 4 by a peeling means.
  • the suction surface of the suction part 164a has a circular arc cross section.
  • the peeling means may peel off the second release film 41 by sticking the adhesive tape to the surface of the second release film 41 using an adhesive tape and moving the adhesive tape with a moving mechanism.
  • the single wafer pasting device 164 has a fixed surface 164b, and the fixed surface 164b sucks and fixes the first surface P1 side of the liquid crystal cell P.
  • the sheet-like second optical film 4 in a state where the second release film 41 is peeled off and the second pressure-sensitive adhesive layer 42 is exposed is attached to the second surface P2 of the liquid crystal cell P so as to roll the suction portion 164a.
  • the fourth surface protective film 45 is peeled off.
  • the peeling treatment may be performed manually or with a peeling device.
  • the sheet-like first optical film 2 is used to attach the sheet-to-panel method to the liquid crystal cell, and the sheet-like second optical film 4.
  • a roll-like second optical film 3 may be used to attach to the liquid crystal cell by a roll-to-panel method.
  • the optical film is used as a roll-shaped optical film, but the configuration of the roll-shaped optical film is not limited to this.
  • a release film you may use what wound the strip
  • the band-shaped optical film is cut (half cut) at a predetermined interval in the width direction, but from the viewpoint of improving the yield, the band-shaped optical film is avoided so as to avoid the defective portion of the band-shaped optical film.
  • May be cut in the width direction (skip cut), or the optical film including the defective portion may be cut with a size smaller than a predetermined interval (the size of the optical cell) (more preferably with a size as small as possible). Good.
  • the description has been given by taking a horizontally long liquid crystal cell and a liquid crystal display panel as examples.
  • the shape of the liquid crystal cell and the liquid crystal display panel is another set of sides facing each other. As long as the shape has the following, there is no particular limitation.

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  • Liquid Crystal (AREA)

Abstract

L'objectif de la présente invention est de fournir un ensemble de films optiques qui permet une production préférable de panneaux d'affichage optiques de la même configuration même lorsqu'un procédé rouleau à panneau et un procédé feuille à panneau sont simultanément utilisés lors de la fixation d'un film mince optiquement fonctionnel à une cellule optique. La présente invention concerne un ensemble de films optiques comprenant un film optique enroulé et un film optique en forme de feuille le film optique enroulé est obtenu par empilement d'un film de séparation, une couche adhésive sensible à la pression, un film optiquement fonctionnel et un premier film de protection de surface dans cet ordre; et le film optique en forme de feuille est obtenu par empilement d'un film détachable, d'un film adhésif sensible à la pression, un film fonctionnel optique, un premier film de protection de surface et un second film de protection de surface dans cet ordre.
PCT/JP2017/023946 2016-07-22 2017-06-29 Essemble de films optiques et son procédé de production WO2018016288A1 (fr)

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KR1020187005400A KR102436860B1 (ko) 2016-07-22 2017-06-29 광학 필름 세트 및 그의 제조 방법
CN201780002968.XA CN107924020B (zh) 2016-07-22 2017-06-29 光学薄膜组件及其制造方法

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JP2016144845A JP6792366B2 (ja) 2016-07-22 2016-07-22 光学フィルムセット及びその製造方法
JP2016-144845 2016-07-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021029191A1 (fr) * 2019-08-13 2021-02-18 東洋紡株式会社 Corps stratifié de film
JP2021509485A (ja) * 2018-03-23 2021-03-25 エルジー・ケム・リミテッド ディスプレイユニット製造システム
WO2023176589A1 (fr) * 2022-03-14 2023-09-21 日東電工株式会社 Stratifié optique équipé d'un film de protection de surface et son procédé de production
WO2023176590A1 (fr) * 2022-03-14 2023-09-21 日東電工株式会社 Stratifié optique avec films de protection de surface et procédé de fabrication de système d'affichage

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7131938B2 (ja) * 2018-03-29 2022-09-06 芝浦メカトロニクス株式会社 粘着テープの貼着装置
PL3667118T3 (pl) 2018-12-14 2021-07-12 Arnold Jäger Holding GmbH Pas jako cięgno bez końca oraz sposób wytwarzania takiego pasa
KR102174485B1 (ko) * 2020-05-29 2020-11-04 주식회사 제이케이랩스 표시패널용 점착필름 프레싱 방법 및 이를 이용하는 장치
WO2023095657A1 (fr) * 2021-11-26 2023-06-01 日東電工株式会社 Feuille adhésive optique recouverte
WO2024071386A1 (fr) * 2022-09-30 2024-04-04 富士フイルム株式会社 Stratifié et stratifié contenant un élément optique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121044A (ja) * 2008-11-19 2010-06-03 Nitto Denko Corp 表面保護シートおよびその利用
JP2011180295A (ja) * 2010-02-26 2011-09-15 Nitto Denko Corp 切断情報決定方法、並びに、これを用いた帯状偏光シートの製造方法、光学表示ユニットの製造方法、帯状偏光シート及び偏光シート原反
JP2014095833A (ja) * 2012-11-09 2014-05-22 Nitto Denko Corp 光学表示パネルの連続製造方法および光学表示パネルの連続製造システム
JP2016053643A (ja) * 2014-09-03 2016-04-14 日東電工株式会社 偏光子の製造方法
JP2016118776A (ja) * 2014-12-22 2016-06-30 住友化学株式会社 プロテクトフィルム付偏光板及びそれを含む積層体

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001166132A (ja) * 1999-12-06 2001-06-22 Sumitomo Chem Co Ltd 光学フィルム
JP2006039238A (ja) 2004-07-28 2006-02-09 Yodogawa Medekku Kk 偏光板やａｒフィルム等の機能性フィルムの貼付装置
KR101148400B1 (ko) * 2005-06-29 2012-05-23 엘지디스플레이 주식회사 Ｉｐｓ 모드 액정표시소자
JP5616054B2 (ja) 2009-12-09 2014-10-29 住友化学株式会社 偏光フィルムの貼合装置およびこれを備える液晶表示装置の製造システム
JP2015049115A (ja) 2013-08-30 2015-03-16 住友化学株式会社 光学部材貼合体の製造方法
CN105717572B (zh) * 2014-12-22 2020-05-12 住友化学株式会社 带有保护膜的偏振板及包含它的层叠体

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121044A (ja) * 2008-11-19 2010-06-03 Nitto Denko Corp 表面保護シートおよびその利用
JP2011180295A (ja) * 2010-02-26 2011-09-15 Nitto Denko Corp 切断情報決定方法、並びに、これを用いた帯状偏光シートの製造方法、光学表示ユニットの製造方法、帯状偏光シート及び偏光シート原反
JP2014095833A (ja) * 2012-11-09 2014-05-22 Nitto Denko Corp 光学表示パネルの連続製造方法および光学表示パネルの連続製造システム
JP2016053643A (ja) * 2014-09-03 2016-04-14 日東電工株式会社 偏光子の製造方法
JP2016118776A (ja) * 2014-12-22 2016-06-30 住友化学株式会社 プロテクトフィルム付偏光板及びそれを含む積層体

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021509485A (ja) * 2018-03-23 2021-03-25 エルジー・ケム・リミテッド ディスプレイユニット製造システム
JP7194739B2 (ja) 2018-03-23 2022-12-22 杉金光電（蘇州）有限公司 ディスプレイユニット製造システム
WO2021029191A1 (fr) * 2019-08-13 2021-02-18 東洋紡株式会社 Corps stratifié de film
WO2023176589A1 (fr) * 2022-03-14 2023-09-21 日東電工株式会社 Stratifié optique équipé d'un film de protection de surface et son procédé de production
WO2023176590A1 (fr) * 2022-03-14 2023-09-21 日東電工株式会社 Stratifié optique avec films de protection de surface et procédé de fabrication de système d'affichage

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KR102436860B1 (ko) 2022-08-26
JP2018013727A (ja) 2018-01-25
TW201805656A (zh) 2018-02-16
TWI725209B (zh) 2021-04-21
JP6792366B2 (ja) 2020-11-25
CN107924020B (zh) 2022-03-01
CN107924020A (zh) 2018-04-17

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