WO2021210204A1 - Film polarisant, corps multicouche optique et dispositif d'affichage d'image - Google Patents

Film polarisant, corps multicouche optique et dispositif d'affichage d'image Download PDF

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Publication number
WO2021210204A1
WO2021210204A1 PCT/JP2020/041387 JP2020041387W WO2021210204A1 WO 2021210204 A1 WO2021210204 A1 WO 2021210204A1 JP 2020041387 W JP2020041387 W JP 2020041387W WO 2021210204 A1 WO2021210204 A1 WO 2021210204A1
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WIPO (PCT)
Prior art keywords
layer
main surface
decorative layer
film
polarizer
Prior art date
Application number
PCT/JP2020/041387
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English (en)
Japanese (ja)
Inventor
悠太 渡邉
孝伸 矢野
Original Assignee
日東電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to CN202080006195.4A priority Critical patent/CN113826033A/zh
Priority to KR1020217010825A priority patent/KR102454310B1/ko
Publication of WO2021210204A1 publication Critical patent/WO2021210204A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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
    • 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
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • 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
    • 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
    • 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
    • G02F1/133528—Polarisers
    • 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
    • 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
    • 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
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • 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 a polarizing film, an optical laminate, and an image display device.
  • An image display device that displays an image such as a still image or a moving image includes, for example, a window member, an optical film, and a panel member including a display panel.
  • the image display device may further include a touch sensor.
  • an optical laminate in a state where the laminated structure excluding the panel member of the image display device is held by the separator may be provided.
  • an image display device can be formed by peeling off the separator of the optical laminate and attaching it to the panel member.
  • the optical film used in the image display device usually includes a polarizing film.
  • a general polarizing film includes a film-shaped polarizing element and a protective film arranged so as to sandwich each of the main surfaces of both polarizing elements.
  • An adhesive layer may be interposed between the polarizer and each protective film.
  • Patent Document 1 describes a polarizing base layer; a polarizing coating layer coated on the lower surface of the polarizing base layer; an adhesive layer arranged on the upper portion of the polarizing base layer; and on the surface of the polarizing base layer or the polarizing coating layer.
  • a polarizing film that includes a light-shielding member that is printed to form a single film.
  • Patent Document 1 describes that the polarizing plate arranged at the top of the display panel is replaced with a polarizing coating layer arranged at the bottom of the cover glass to reduce the thickness of the display panel and reduce the manufacturing cost. There is.
  • the protective film is arranged on both main surfaces of the polarizing element. From the viewpoint of thinning and low cost, it is advantageous to form the polarizing film without using at least one of such protective films.
  • a polarizing film in which at least one main surface side of the polarizer is not protected by a protective film there may be a problem that decolorization becomes remarkable at the end of the polarizer when exposed to a high temperature and high humidity environment. Became clear.
  • a polarizing film having no protective film on at least one main surface side of both main surfaces of the polarizing element may be referred to as a protectionless polarizing film.
  • the first aspect of the present invention is a polarizer and A first decorative layer and a first adhesive layer adhered to one main surface of the polarizer, A second decorative layer and a second adhesive layer, or a protective film, which are adhered to the other main surface of the polarizer, are provided.
  • the first decorative layer is directly adhered to the peripheral edge of one of the main surfaces without an adhesive layer.
  • the first adhesive layer is formed so as to cover a surface of the first decorative layer opposite to the polarizer and a region of the one main surface to which the first decorative layer is not adhered.
  • the second decorative layer is directly adhered to the peripheral edge of the other main surface without an adhesive layer.
  • the second adhesive layer is formed so as to cover a surface of the second decorative layer opposite to the polarizer and a region of the other main surface to which the second decorative layer is not adhered.
  • the protective film is directly adhered to the other main surface without an adhesive layer, or is adhered through an adhesive layer.
  • a second aspect of the present invention comprises the above-mentioned polarizing film and at least one of a window member and a retardation film.
  • the polarizing film includes a first main surface on the viewing side and a second main surface on the side opposite to the first main surface.
  • the window member is arranged on the first main surface side of the polarizing film.
  • the retardation film relates to an optical laminate arranged on the second main surface side of the polarizing film.
  • a third aspect of the present invention comprises the above-mentioned polarizing film and a panel member.
  • the polarizing film includes a first main surface on the viewing side and a second main surface on the side opposite to the first main surface.
  • the panel member relates to an image display device arranged on the second main surface side.
  • the fourth aspect of the present invention relates to an image display device including the above-mentioned optical laminate and a panel member arranged on the side opposite to the visible side of the optical laminate.
  • FIG. 1 It is a Raman spectrum at four measurement points of a polarizer after the evaluation sample of Example 1 was exposed to a high temperature and high humidity environment for a long time. It is a Raman spectrum at four measurement points of a polarizer after the evaluation sample of Comparative Example 1 was exposed to a high temperature and high humidity environment for a long time.
  • the protectionless polarizing film is excellent in terms of thinning and cost reduction.
  • a new problem may arise in which decolorization becomes remarkable in the polarizing element (particularly at the end of the polarizing element).
  • moisture penetrates through the interface between the polarizer and the layer adjacent to the polarizer, or the moisture absorbed by the layer adjacent to the polarizer is absorbed. It is considered that this is due to the penetration into the polarizer in the thickness direction from this layer.
  • a general polarizing film since both main surfaces of the polarizer are covered with a protective film, the amount of water that penetrates into the polarizer through the protective film is relatively small. Further, the protective film is directly adhered to the main surface of the polarizer or is adhered via an adhesive layer.
  • the adhesive layer is a layer of cured product of the adhesive. Therefore, the high adhesiveness at the interface between the polarizer and the protective film or the adhesive layer suppresses the intrusion of moisture from this interface. In addition, the invasion of moisture through the adhesive layer, which is a cured product, is also suppressed. Therefore, in a general polarizing film in which both main surfaces of the polarizer are covered with a protective film, discoloration at the end of the polarizer is hardly a problem.
  • an adhesive layer may be arranged adjacent to the polarizer.
  • the adhesive layer is a layer composed of a non-curable adhesive and has fluidity. Since the adhesive layer does not require a curing step, it has the advantages that it can be easily laminated with other members and can be reworked. Further, in the polarizing film used for the flexible image display device, if the adhesive layer is provided, the stress when the flexible image display device is repeatedly bent by the adhesive layer can be relaxed. In such an adhesive layer, the constituent material itself often has a functional group involved in adhesiveness, and since it is more hydrophilic than the cured product constituting the adhesive layer, it is inside the layer as compared with the adhesive layer. Moisture easily invades.
  • the polarizing film on the first side surface of the present invention is formed on the polarizing element, the first decorative layer and the first adhesive layer adhered to one main surface of the polarizer, and the other main surface of the polarizer.
  • a second decorative layer and a second adhesive layer, or a protective film, which are adhered to each other, are provided.
  • the first decorative layer is directly adhered to the peripheral edge of one main surface of the polarizer without an adhesive layer.
  • the first adhesive layer is formed so as to cover a surface of the first decorative layer opposite to the polarizer and a region of one main surface of the polarizer to which the first decorative layer is not adhered.
  • the second decorative layer is directly adhered to the peripheral edge of the other main surface of the polarizer without an adhesive layer.
  • the second adhesive layer is formed so as to cover a surface of the second decorative layer opposite to the polarizer and a region on the other main surface where the second decorative layer is not adhered.
  • the protective film is directly adhered to the other main surface of the polarizer without an adhesive layer, or is adhered through an adhesive layer.
  • the polarizing film of the present invention is a protection-less polarizing film, it is possible to reduce decolorization of the polarizer when the polarizing film is exposed to a high temperature and high humidity environment. This is considered to be due to the following reasons.
  • the protector and the protective film or the adhesive layer are adhered. Invasion of moisture into the inside through the interface between the adhesive layer, the adhesive layer, the adhesive layer, and the protective film is suppressed. As described above, it is considered that the decolorization of the polarizer due to the action of moisture is reduced by reducing the invasion of moisture into the polarizer.
  • the optical laminate used in the image display device or the image display device is generally provided with a decorative layer so that the lead-out wiring cannot be seen from the outside.
  • the decorative layer is originally a member arranged in the image display device or the optical laminate, it is not necessary to newly use another member in order to reduce the decolorization of the polarizer, and the protective-less polarized light is used. The original purpose of thinning and cost reduction using a film is not impaired.
  • Moisture permeability can be measured in accordance with JIS Z 0208: 1976 "Humidity Permeability Test Method for Moisture-Proof Packaging Materials (Cup Method)". The test is performed under temperature and humidity conditions of a temperature of 40 ⁇ 0.5 ° C. and a relative humidity of 90% ⁇ 2%. The value of moisture permeability is inversely proportional to the thickness of the sample to be measured. Therefore, the moisture permeability when the thickness is 25 ⁇ m is obtained by multiplying the measured moisture permeability value by the sample thickness ( ⁇ m) and dividing by 25 ⁇ m.
  • the decorative layer is measured in a state arranged to face the outside.
  • a triacetyl cellulose film having a thickness of 25 ⁇ m is used as the base material.
  • a coating agent containing a component of the decorative layer is applied to one main surface of the base material by a vapor phase method, or the components are deposited by a vapor phase method to form a decorative layer. Obtained by doing.
  • the moisture permeability of the decorative layer can be obtained from the laminated body as described above.
  • the constituent components of the decorative layer and the content ratio of each component are analyzed, and a laminate of the decorative layer and the base material having the same composition is obtained. It is produced as described above, and the moisture permeability of the decorative layer can be determined from this laminated body.
  • the area of one main surface of the decorative layer is less than 25 cm 2 , the components of the decorative layer and the content ratio of each component are analyzed from the decorative layer in the actual polarizing film, and the moisture permeability is known.
  • the moisture permeability can be estimated in comparison with the decorative layer of.
  • Analysis of the constituents of the decorative layer and their content is performed using, for example, at least one selected from the group consisting of nuclear magnetic resonance, mass spectrometry, gas chromatography, and liquid chromatography.
  • the polarizing film of the present invention can reduce decolorization of the polarizer when exposed to a high temperature and high humidity environment.
  • a polarizing film does not contain a bleached portion or contains a bleached portion at the end of the polarizer after being held at 60 ° C. ⁇ 1 ° C. and a relative humidity of 90% ⁇ 2% for 175 hours.
  • the decolorized portion is formed in a region where the distance from the end face of the polarizer is less than 100 ⁇ m (preferably 80 ⁇ m or less).
  • the decorative layer is formed in the immediate vicinity of the end surface even if a decolorized portion is formed at the end portion of the polarizer. , The decolorized part can be concealed by the decorative layer.
  • the polarizer includes a pair of main surfaces that occupy most of the surface area of the polarizer, and end faces that are continuous with each main surface at the peripheral edge of each main surface.
  • the pair of main surfaces corresponds to the one main surface and the other main surface located on the opposite side of the one main surface.
  • the end portion of the polarizer shall mean the end face of the polarizer and a portion in the vicinity thereof.
  • the present invention also includes an optical laminate including the above-mentioned polarizing film, an image display device including the optical laminate, and an image display device including the above-mentioned polarizing film.
  • the polarizing film includes a pair of main surfaces that occupy most of the surface of the polarizing film.
  • the main surface on the visible side of the polarizing film is referred to as a first main surface, and the main surface on the side opposite to the first main surface is referred to as a second main surface.
  • the optical laminate includes the above-mentioned polarizing film and at least one of a window member and a retardation film.
  • the window member is arranged on the first main surface side of the polarizing film
  • the retardation film is arranged on the second main surface side of the polarizing film.
  • the display device includes the above-mentioned polarizing film or the above-mentioned optical laminate, and a panel member.
  • the panel member is arranged on the second main surface side with respect to the polarizing film.
  • the panel member is arranged on the side opposite to the visual viewing side with respect to the optical laminate.
  • each layer and each member in the stacking direction (in other words, the average thickness direction of each layer or each member) of each layer constituting the polarizing film, the optical laminate, or each member constituting the image display device.
  • the relative positional relationship of the members (or the layers constituting each member) may be expressed by using the expression “viewing side” or “opposite side to the viewing side” of the polarizing film, the image display device, or the optical laminate. be.
  • the thickness of the member or layer constituting the polarizing film, the optical laminate, or the image display device is the thickness of the polarizing film, the optical laminate, or the image display device, except for the case where the thickness is 25 ⁇ m according to the regulation of moisture permeability.
  • a cross section is cut out and is meant to mean the average thickness measured based on a scanning electron microscope (SEM) image of the cross section. The average thickness is obtained by measuring the thickness at an arbitrary plurality of points (for example, 5 points) and averaging the thickness in the image of the cross section.
  • the polarizing film includes (i) a polarizer, a first decorative layer and a first adhesive layer bonded to one main surface of the polarizer, and a second decoration bonded to the other main surface of the polarizer.
  • a polarizer When it has a layer and a second adhesive layer, (ii) a polarizer, a first decorative layer and a first adhesive layer adhered to one main surface of the polarizer, and the other main surface of the polarizer.
  • the case including the case where the adhesive protective film is provided is included.
  • the polarizing film may further include a first separator arranged on the side opposite to the polarizer of the first adhesive layer.
  • the polarizing film may further include a second separator arranged on the opposite side of the polarizing element of the second adhesive layer.
  • the polarizing film can be laminated on the other member.
  • the polarizer is not particularly limited, and those used in the field of image display devices and the like can be used.
  • the polarizer include a film in which a dichroic substance is adsorbed on a hydrophilic polymer film and uniaxially stretched, and a polyene-based oriented film.
  • the hydrophilic polymer constituting the hydrophilic polymer film include polyvinyl alcohol-based resins (including partially formalized polyvinyl alcohol-based resins) and partially saponified ethylene-vinyl acetate copolymers.
  • the dichroic substance include iodine and a dichroic dye.
  • the material constituting the polyene-based alignment film include a dehydrated product of a polyvinyl alcohol-based resin and a dehydrochlorinated product of a polyvinyl chloride-based resin.
  • the thickness of the polarizer may be, for example, 1 ⁇ m or more and 30 ⁇ m or less, 2 ⁇ m or more and 15 ⁇ m or less, or 3 ⁇ m or more and 10 ⁇ m or less.
  • the first decorative layer is directly adhered to the peripheral edge of one main surface of the polarizer without an adhesive layer.
  • the second decorative layer is directly adhered to the peripheral edge of the other main surface of the polarizer without an adhesive layer.
  • each decorative layer is provided on the outer periphery of the display unit on which the image is displayed so that the lead wiring of the drive element or the touch sensor is not visible from the outside. Therefore, each decorative layer may have a shape that can conceal the lead-out wiring and the like, and may be formed on at least a part of the peripheral edge of the main surface of the polarizer. From the viewpoint of further enhancing the effect of suppressing the intrusion of water into the polarizing film, it is preferable to form the entire peripheral edge portion in a frame-like pattern so as to surround the inner region of the main surface. Further, from the viewpoint of enhancing the effect of suppressing decolorization in the polarizer, it is preferable that the end face of the polarizer is flush with the end face of each decorative layer or located inside the end face of each decorative layer. ..
  • Moisture permeability when the thickness of the decorative layer is 25 ⁇ m the long 1500g / m 2 ⁇ 24h or less, more preferably at most 1300g / m 2 ⁇ 24h or less or 1200g / m 2 ⁇ 24h.
  • the lower limit of the moisture permeability when the thickness of the decorative layer is 25 ⁇ m is not particularly limited, for example, a 500g / m 2 ⁇ 24h or more, may be 1000g / m 2 ⁇ 24h or more.
  • the thickness of the decorative layer is, for example, 3 ⁇ m or more. From the viewpoint of further enhancing the effect of suppressing the invasion of water from the thickness direction of the decorative layer, the thickness of the decorative layer is preferably 5 ⁇ m or more, and may be 6 ⁇ m or more. The thickness of the decorative layer is, for example, 20 ⁇ m or less, and may be 15 ⁇ m or less. From the viewpoint that the step due to the decorative layer can be easily eliminated by the adhesive layer, the thickness of the decorative layer is preferably 10 ⁇ m or less, and may be 8 ⁇ m or less. Further, when the thickness of the decorative layer is in such a range, it is easy to secure high bending resistance of the image display device and the optical laminate. These lower limit values and upper limit values can be arbitrarily combined.
  • the width of each decorative layer is, for example, 0.1 mm or more.
  • the width of each decorative layer is preferably 0.5 mm or more, preferably 1 mm or more, from the viewpoint of enhancing the effect of suppressing the intrusion of water through the interface between the decorative layer and the polarizer and the decorative layer. You may.
  • the upper limit of the width of each decorative layer may be selected within a range in which the wiring or the like can secure concealment and visibility, but may be, for example, 30 mm or less, or 20 mm or less. These lower limit values and upper limit values can be arbitrarily combined.
  • the width of the decorative layer is the width of the decorative layer when viewed from the direction perpendicular to the main surface of the polarizer in the polarizing film at any 30 points, and the width of the decorative layer is 10 from the smallest. Let the average value be the average value.
  • the width of the decorative layer may be determined for the polarizing film taken out by peeling another member from the optical laminate or the image display device.
  • the decorative layer is required to shield the light from the side opposite to the viewing side.
  • the decorative layer include an ink layer, a metal thin film, and a metal fine particle-containing layer (thin film).
  • the decorative layer may have a single-layer structure or a laminated structure.
  • the decorative layer having a laminated structure may be, for example, a laminated body having at least two layers selected from the group consisting of an ink layer, a metal thin film, and a metal fine particle-containing layer.
  • Such a laminate includes not only a laminate having at least two types of layers selected from the group consisting of an ink layer, a metal thin film, and a metal fine particle-containing layer, but also a laminate of two or more ink layers having different compositions.
  • a laminate of two or more metal thin films having different compositions, a laminate of two or more layers containing metal fine particles having different compositions, and the like are also included.
  • the metal fine particle-containing layer contains, for example, metal fine particles and a binder resin. In the laminated body, it is desirable that the adjacent layers or thin films are directly adhered to each other without an adhesive layer intervening.
  • a coating agent (including ink) containing the constituent components of the decorative layer is applied to the main surface of the polarizer to solidify the coating film of the coating agent. It is formed by doing.
  • the solidification of the coating film can be carried out by at least one selected from drying, heating, exposure and the like.
  • the coating agent includes, for example, fine particles exhibiting concealing properties, a resin binder, and if necessary, a liquid medium.
  • the coating agent may contain additives, if necessary.
  • Examples of the fine particles exhibiting hiding properties include pigments and inorganic fine particles.
  • Examples of the pigment include an inorganic pigment (carbon black and the like), a dispersed organic pigment, and a soluble fluorescent pigment.
  • Examples of the inorganic fine particles include fine particles of inorganic components other than pigments.
  • Examples of the inorganic component include metals, alloys, metal compounds (oxides, nitrides, etc.), carbonaceous materials (graphitized carbon, etc.) and the like.
  • the fine particles exhibiting the hiding property one type may be used alone, or two or more types may be used in combination.
  • the resin binder examples include thermoplastic resins and curable resins (thermosetting resins, photocurable resins, etc.).
  • Thermoplastic resins particularly cyclic olefin resins and acrylic resins, are preferable from the viewpoint that lower moisture permeability can be easily obtained and high dispersion stability in the coating agent can be easily ensured.
  • One type of resin binder may be used alone, or two or more types may be used in combination.
  • liquid medium for example, an organic liquid medium, water, and a mixture thereof are used depending on the components of the coating agent.
  • an organic liquid medium ethanol, isopropanol, glycol ether, etc.
  • one type may be used alone, or two or more types may be used in combination.
  • additives can be used, and examples thereof include dispersants, surfactants, and coupling agents. However, the additives are not limited to these.
  • the decorative layer may be formed by the vapor phase method. More specifically, among the decorative layers, the metal thin film may be formed, for example, by depositing the constituent components on the main surface of the polarizer by the vapor phase method.
  • the gas phase method include a sputtering method, a vacuum deposition method, a chemical vapor deposition (CVD) method, and an electron beam deposition method.
  • the first adhesive layer is formed so as to cover a surface of the first decorative layer opposite to the polarizer and a region of one main surface of the polarizer to which the first decorative layer is not adhered.
  • the second adhesive layer is formed so as to cover a surface of the second decorative layer opposite to the polarizer and a region of the other main surface of the polarizer to which the second decorative layer is not adhered.
  • the storage elastic modulus of each adhesive layer at 25 ° C. is usually 10 MPa or less, 3 MPa or less, 1 MPa or less, 0.2 MPa or less, or 0.1 MPa or less.
  • the storage elastic modulus of each adhesive layer at 25 ° C. may be 0.001 MPa or more, or 0.005 MPa or more.
  • the storage elastic modulus of the adhesive layer at 25 ° C. is larger than 10 MPa, may be 100 MPa or more, and is usually about 1 GPa.
  • the adhesive layer means a layer having such a storage elastic modulus. In this way, the adhesive layer is distinguished from the adhesive layer by the storage elastic modulus.
  • the storage elastic modulus of the adhesive layer can be measured in accordance with JIS K 7244-1: 1998. Specifically, first, a molded product having a thickness of about 1.5 mm is produced by using the pressure-sensitive adhesive layer or the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer. This molded product is punched into a disk shape having a diameter of 7.9 mm to prepare a test piece. This test piece is sandwiched between parallel plates, and the viscoelasticity is measured under the following conditions using a dynamic viscoelasticity measuring device (for example, "Advanced Rheometric Expansion System (ARES)" manufactured by Rheometric Scientific), and the viscoelasticity is measured at 25 ° C.
  • ADS Advanced Rheometric Expansion System
  • the storage elastic modulus in.
  • the storage elastic modulus of the adhesive layer is also obtained in the same manner as in the case of the adhesive layer.
  • the total light transmittance of each adhesive layer is preferably 85% or more, more preferably 90% or more.
  • the total light transmittance of the adhesive layer can be measured in accordance with JIS K 7136K: 2000. The measurement was carried out by arranging an adhesive layer or an adhesive constituting the adhesive layer on non-alkali glass (thickness 0.8 to 1.0 mm, total light transmittance 92%) until the thickness became about 1.5 mm. Pieces are used.
  • Each adhesive layer is composed of an adhesive.
  • the type of adhesive is not particularly limited, and for example, acrylic adhesive, rubber adhesive, silicone adhesive, urethane adhesive, vinyl alkyl ether adhesive, polyvinylpyrrolidone adhesive, polyacrylamide adhesive. , And a cellulose-based pressure-sensitive adhesive.
  • Adhesives include, for example, base polymers, cross-linking agents, additives (eg, tackifiers, coupling agents, polymerization inhibitors, cross-linking retarders, catalysts, plasticizers, softeners, fillers, colorants, metal powders.
  • Ultraviolet absorbers can be included.
  • light stabilizers antioxidants, deterioration inhibitors, surfactants, antistatic agents, surface lubricants, leveling materials, corrosion inhibitors, particles of inorganic or organic materials (metal compound particles (metal oxidation) Material particles, etc.), resin particles, etc.)
  • surfactants antistatic agents
  • surface lubricants leveling materials
  • corrosion inhibitors particles of inorganic or organic materials (metal compound particles (metal oxidation) Material particles, etc.), resin particles, etc.)
  • leveling materials corrosion inhibitors
  • particles of inorganic or organic materials metal compound particles (metal oxidation) Material particles, etc.), resin particles, etc.
  • the components of the pressure-sensitive adhesive are not limited to these.
  • the adhesives constituting the first adhesive layer and the second adhesive layer may be the same or different.
  • each adhesive layer may be 50 ⁇ m or less, 40 ⁇ m or less, or 30 ⁇ m or less. From the viewpoint of easily ensuring high flexibility of the image display device or the optical laminate, the thickness of each adhesive layer is preferably 5 ⁇ m or more, and may be 7 ⁇ m or more. From the viewpoint of easily absorbing the step of the decorative layer, the thickness of each adhesive layer is preferably 10 ⁇ m or more.
  • the thickness of each adhesive layer may be 1.5 times or more, 2.5 times or more, or 3 times or more the thickness of the decorative layer to be adhered.
  • the above-mentioned upper limit value and lower limit value of the thickness of the adhesive layer can be arbitrarily combined.
  • each adhesive layer for example, in a state where the decorative layer is adhered to the peripheral edge of the main surface of the polarizer, the surface of the decorative layer opposite to the polarizer and the decorative layer of the polarizer are not adhered. It can be formed by applying a pressure-sensitive adhesive constituting each pressure-sensitive adhesive layer or transferring a pressure-sensitive adhesive formed in a sheet shape so as to cover the region. When transferring the pressure-sensitive adhesive, the pressure-sensitive adhesive formed into a sheet on the surface of the first separator or the second separator may be transferred together with the separator.
  • each separator for example, a release sheet including a base sheet and a release agent arranged on at least one main surface of the base sheet is used.
  • Each separator is arranged with the release agent in contact with the first adhesive layer or the second adhesive layer (more specifically, the surface of each adhesive layer opposite to the polarizer).
  • the base sheet may be any as long as it has appropriate strength and flexibility and a layer of a release agent can be easily formed.
  • a resin film, paper, a laminate thereof, or the like is used as the base sheet.
  • the material of the base sheet is determined according to the type of release agent, other configurations of the polarizing film, and the like.
  • the resin film for example, a polyester film (polyethylene terephthalate film or the like) or a polyolefin film (polypropylene film or the like) may be used.
  • the thickness of the base sheet is not particularly limited, and can be selected in consideration of desired peelability.
  • the release agent a known one can be used, and it is preferable to select one having a small amount of the adhesive layer remaining on the separator.
  • a silicone-based release agent or a fluorine-based release agent may be used.
  • the protective film is directly adhered to the other main surface of the polarizer without an adhesive layer, or is adhered through an adhesive layer.
  • the protective film is arranged so as to cover the entire other main surface of the polarizer.
  • Moisture permeability when the thickness of the protective film is 25 ⁇ m may be any 1500g / m 2 ⁇ 24h or less, preferably not more than 1000g / m 2 ⁇ 24h, 700g / m 2 ⁇ 24h or less or 500g / m 2 ⁇ 24h or less Is more preferable.
  • the lower limit of the moisture permeability when the thickness of the protective film of 25 ⁇ m is not particularly limited, for example, at 50g / m 2 ⁇ 24h or more, may be 100g / m 2 ⁇ 24h or more.
  • the protective film a polymer film that exhibits low moisture permeability as described above and is excellent in transparency, mechanical strength, thermal stability, moisture barrier property, and optical isotropic property is used, for example.
  • the protective film preferably contains at least one selected from the group consisting of an acrylic resin and a cyclic polyolefin resin. The protective film containing these resins has low moisture permeability and can further enhance the effect of reducing decolorization of the polarizer.
  • acrylic resin examples include homopolymers or copolymers containing at least one monomer unit selected from the group consisting of alkyl acrylates and alkyl methacrylates.
  • the number of carbon atoms in the alkyl moiety of the alkyl acrylate and the alkyl methacrylate is preferably 1 to 4, and may be 1 or 2.
  • an acrylic resin containing at least methyl methacrylate units that is, a methacrylic resin
  • the acrylic resin may have a ring structure in the main chain.
  • an imide ring structure is preferable from the viewpoint of excellent heat resistance and moisture resistance.
  • the imide ring structure include a glutarimide structure, an N-substituted maleimide structure (for example, a cyclohexylmaleimide structure, a methylmaleimide structure, a phenylmaleimide structure, and a benzylmaleimide structure).
  • the acrylic resin preferably contains a methacrylic resin having an imide ring structure in the main chain.
  • cyclic polyolefin resin examples include homopolymers and copolymers using cyclic olefins such as norbornene and dicyclopentadiene as monomers. Cyclic olefins also include those having a substituent (eg, 1-methylnorbornene, 4-methylnorbornene, 4-phenylnorbornene).
  • the cyclic polyolefin resin using norbornene may be obtained by ring-opening polymerization of norbornene, or may be obtained by addition polymerization.
  • the protective film may contain other resins in addition to the above resins.
  • Other resins are not particularly limited, but are, for example, cellulose-based resins, polyolefin-based resins other than cyclic polyolefins, imide-based resins (including phenylmaleimide-based resins), polyamide-based resins, polycarbonate-based resins, and polyester-based resins (poly).
  • Allylate resin including polyethylene terephthalate resin), acetate resin, sulfone resin (including polyether sulfone resin), polyvinyl chloride resin, polyvinylidene chloride resin, polystyrene resin, polyvinyl alcohol type Examples thereof include resins, sulfide resins (for example, polyphenylene sulfide resins), polyether ether ketone resins, epoxy resins, and urethane resins. The ratio of other resins is adjusted so that the moisture permeability of the protective film is within the above range.
  • the thickness of the protective film is, for example, 20 ⁇ m or more. From the viewpoint of reducing the moisture permeability of the entire protective film and further enhancing the effect of suppressing the invasion of moisture from the thickness direction, the thickness of the protective film is preferably 35 ⁇ m or more, more preferably 40 ⁇ m or more.
  • the upper limit of the thickness of the protective film is not particularly limited, but may be 100 ⁇ m or less, or 60 ⁇ m or less. These lower limit values and upper limit values can be arbitrarily combined.
  • the adhesive layer is a layer of cured product of the adhesive.
  • a curable adhesive used for a polarizing film can be used.
  • examples of such an adhesive include an active energy ray-curable adhesive (ultraviolet curable adhesive, electron beam curable adhesive, etc.) and a thermosetting adhesive.
  • examples of such an adhesive include, but are not limited to, an acrylic adhesive, an epoxy adhesive, and a urethane adhesive.
  • the storage elastic modulus of the adhesive layer at 25 ° C is within the above range.
  • the upper limit of the storage elastic modulus of the adhesive layer at 25 ° C. is not particularly limited, but may be, for example, 15 GPa or less and 10 GPa or less. These upper limit values and the lower limit value of the storage elastic modulus of the adhesive layer at 25 ° C. described above can be arbitrarily combined.
  • the thickness of the adhesive layer is, for example, 5 ⁇ m or less. From the viewpoint of further reducing the invasion of water through the adhesive layer, the thickness of the adhesive layer is preferably 3 ⁇ m or less, more preferably 2 ⁇ m or less or 1.5 ⁇ m or less. From the viewpoint of further reducing the intrusion of water through the interface between the polarizer and the protective film, the thickness of the adhesive layer is preferably 0.5 ⁇ m or more, more preferably 0.8 ⁇ m or more or 1 ⁇ m or more. These upper limit values and lower limit values can be arbitrarily combined.
  • a polarizing element is directly laminated on one main surface of the protective film without an adhesive layer, or a polarizing element is laminated via an adhesive layer, and the main surface on the opposite side of the protective film of the polarizing element is laminated.
  • the first decorative layer is formed, and the separately formed first adhesive layer (and, if necessary, the first separator) is attached to the region where the first decorative layer and the first decorative layer of the polarizer are not adhered. It can be formed by transferring so as to cover.
  • a first decorative layer is formed on one main surface of the polarizer in the same manner as described above, a first adhesive layer (and a first separator if necessary) is transferred, and the polarizing film is transferred.
  • a protective film may be formed on the other main surface of the polarizer by directly laminating or laminating through an adhesive layer without interposing an adhesive layer.
  • a first decorative layer is formed on one main surface of the polarizer in the same manner as described above, a first adhesive layer (and a first separator if necessary) is transferred, and a first.
  • a second decorative layer is formed on the other main surface of the polarizer, and as in the case of the first adhesive layer (and the first separator), the second adhesive layer (and if necessary) It may be formed by transferring the second separator) accordingly.
  • the optical laminate may include the above-mentioned polarizing film and at least one of a window member and a retardation film.
  • the image display device includes the above-mentioned polarizing film or optical laminate and a panel member.
  • the optical laminate or the image display device may further include a touch sensor. Alternatively, a panel member with a touch sensor may be used as the panel member.
  • the optical laminate or image display device may include an adhesive layer or an adhesive layer that adheres between adjacent members (or layers).
  • the polarizing film includes at least one of the first separator and the second separator
  • the image display device includes the polarizing film with the first separator and the second separator peeled off.
  • the optical laminate may include a polarizing film in which the polarizing film has at least one of the first separator and the second separator peeled off.
  • the window member is arranged on the first main surface side on the viewing side of the polarizing film, and the retardation film is arranged on the second main surface side opposite to the viewing side of the polarizing film. Will be done.
  • the panel member is arranged on the second main surface side of the polarizing film.
  • the protective film may be located on either the first main surface side or the second main surface side, but from the viewpoint of protecting the surface on the viewing side, the protective film is used. 1 It is more advantageous to position it on the main surface side.
  • the window member is arranged on the outermost surface of the image display device or the optical laminate on the visible side in order to prevent damage to the optical laminate such as a polarizing film or other members constituting the image display device.
  • the window member usually comprises at least one layer selected from the group consisting of window film and window glass.
  • the optical laminate or image display device is required to have high transparency (high total light transmittance and low haze, etc.) and high hardness. Further, the flexible image display device is required to have higher flexibility (high commutativity, etc.) in addition to these physical properties.
  • the material of the window film or the window glass is not particularly limited as long as it satisfies these physical characteristics.
  • window glass examples include a thin glass substrate.
  • the thickness of the window glass is, for example, 5 ⁇ m or more and 40 ⁇ m or less, and may be 10 ⁇ m or more and 35 ⁇ m or less.
  • the window film examples include a transparent resin film.
  • the resin constituting the transparent resin film include acrylic resin, cyclic polyolefin resin, and other resins (for example, imide resin, polyethylene terephthalate resin, and other polyester resins) exemplified as the material of the protective film contained in the polarizing film. ) At least one selected from the group consisting of.
  • the resin constituting the transparent resin film is not limited to these.
  • the thickness of the window film is, for example, 20 ⁇ m or more and 500 ⁇ m or less, and may be 30 ⁇ m or more and 200 ⁇ m or less.
  • the transparent material means that the test piece has a total light transmittance of 80% or more. means.
  • a test piece having a thickness of about 1.5 mm and made of a transparent material or member is used for measuring the total light transmittance. The total light transmittance can be measured according to the case of the adhesive layer.
  • the window member may include a hard coat layer.
  • the hard coat layer is usually laminated with the window film. From the viewpoint that a high damage prevention effect of the window film can be easily obtained, it is preferable that the hard coat layer is provided at least on the surface of the window film on the visible side.
  • the thickness of the hard coat layer is, for example, 1 ⁇ m or more and 100 ⁇ m or less, and may be 1 ⁇ m or more and 50 ⁇ m or less.
  • the thickness of each hard coat layer may be within such a range.
  • the hard coat layer is formed by, for example, applying a curable coating agent to the surface of a underlying layer (for example, a window film) and curing it.
  • a curable coating agent for example, a window film
  • the coating agent for example, one for optical film can be used.
  • the coating agent include, but are not limited to, an acrylic coating agent, a melamine coating agent, a urethane coating agent, an epoxy coating agent, a silicone coating agent, and an inorganic coating agent.
  • the coating agent may contain an additive.
  • Additives include, for example, silane coupling agents, colorants, dyes, powders or particles (pigments, inorganic or organic fillers, particles of inorganic or organic materials, etc.), surfactants, plasticizers, antistatic agents. Examples thereof include, but are not limited to, agents, surface lubricants, leveling agents, antioxidants, light stabilizers, ultraviolet absorbers, polymerization inhibitors, antifouling materials, and the like.
  • the window member may be provided with another layer (hereinafter, referred to as layer A), if necessary.
  • layer A include an antireflection layer, an antiglare layer, an antifouling layer, a sticking prevention layer, a hue adjustment layer, an antistatic layer, an easy-adhesion layer, a precipitation prevention layer such as ions or oligomers, a shock absorption layer, and a shatterproof layer.
  • the window member may include one layer A or a plurality of layers.
  • the layer A is, for example, a visible side of one layer (for example, a window film or a window glass) or a laminate of two or more layers (for example, a laminate of a window film and a hard coat layer) constituting a window member. It is provided on the surface side or the surface opposite to the visual recognition side.
  • the layer A may be formed directly on the layer constituting the window member by a coating or the like, or may be laminated via an adhesive layer or an adhesive layer.
  • the thickness of the window member is, for example, 0.02 mm or more and 0.6 mm or less, and may be 0.03 mm or more and 0.3 mm or less.
  • the retardation film examples include a retardation film used in an optical laminate or an image display device. Examples of the retardation film include a uniaxial or biaxial retardation film, a liquid crystal film having a liquid crystal twist orientation or a liquid crystal tilt orientation, a 1/2 wave plate, a 1/4 wave plate, and the like.
  • the optical laminate may include a single-layer retardation film, or may include a laminate of two or more layers of retardation films.
  • the thickness of the retardation film is, for example, 10 ⁇ m or more and 100 ⁇ m or less, and may be 15 ⁇ m or more and 60 ⁇ m or less.
  • the retardation film may be laminated directly on the protective film by using a coating or the like, or may be laminated via an adhesive layer. Further, the retardation film may be attached to the first adhesive layer or the second adhesive layer.
  • a laminate including a polarizing film and a retardation film is generally referred to as an optical film.
  • the optical film may further include a layer (layer B) other than the polarizing film and the retardation film.
  • Layer B examples include an optically anisotropic film other than the polarizer and the retardation film, and a base material layer (or protective layer).
  • optically anisotropic film other than the polarizer and the retardation film examples include a viewing angle expanding film, a viewing angle limiting (peep spinning) film, a brightness improving film, and an optical compensation film. It is not limited.
  • the optical laminate or the image display device may contain one layer of these optically anisotropic films, or may contain two or more layers.
  • the other optically anisotropic film may be directly laminated on the adjacent layer (for example, a retardation film) by using a coating or the like, or may be laminated on the adjacent layer via an adhesive layer or an adhesive layer. May be good.
  • the base material layer a thin glass substrate, a polymer film, or the like is used.
  • the polymer material constituting the polymer film include at least one selected from the group consisting of the acrylic resin, the cyclic polyolefin resin, and other resins exemplified as the material of the protective film contained in the polarizing film. From the viewpoint of thinning, the optical film preferably does not have such a base material layer.
  • the thickness of the layer B is not particularly limited, and is, for example, 0.1 ⁇ m or more and 100 ⁇ m or less.
  • touch sensor for example, a touch sensor used in the field of an image display device or the like is used.
  • the touch sensor include, but are not limited to, a resistive film type, a capacitance type, an optical type, and an ultrasonic type. High sensitivity can be easily obtained by using a capacitive touch sensor.
  • Capacitive touch sensors usually have a transparent conductive layer.
  • Examples of such a touch sensor include a laminate of a transparent conductive layer and a transparent base material.
  • Examples of the transparent base material include a transparent film.
  • the transparent conductive layer is not particularly limited, but conductive metal oxides, metal nanowires, etc. are used.
  • the metal oxide include indium oxide (ITO: Indium Tin Oxide) containing tin oxide and tin oxide containing antimony.
  • the transparent conductive layer may be a conductive pattern composed of a metal oxide or a metal. Examples of the shape of the conductive pattern include, but are not limited to, a striped shape, a square shape, and a grid shape.
  • the surface resistance value of the transparent conductive layer may be, for example, 0.1 ⁇ / ⁇ or more and 1000 ⁇ / ⁇ or less, and 0.5 ⁇ / ⁇ or more and 500 ⁇ / ⁇ or less.
  • the thickness of the transparent conductive layer is, for example, 0.005 ⁇ m or more and 10 ⁇ m or less, and may be 0.01 ⁇ m or more and 3 ⁇ m or less.
  • the transparent film for example, a transparent resin film is used.
  • the resin constituting the transparent resin film include at least one selected from the group consisting of the acrylic resin, the cyclic polyolefin resin, and other resins exemplified as the material of the protective film contained in the polarizing film. Of these, polyester resins, polyimide resins and polyether sulfone resins are preferable. However, the resin constituting the transparent resin film is not limited to these resins.
  • a surface-treated transparent base material may be used.
  • the surface treatment a known one can be adopted.
  • the transparent base material may be subjected to, for example, a dust removal or cleaning treatment (cleaning treatment using a solvent, ultrasonic waves, or the like) prior to laminating the transparent conductive layer.
  • the touch sensor may include a transparent conductive layer and a layer other than the transparent base material (hereinafter referred to as layer C), if necessary.
  • layer C a transparent conductive layer and a layer other than the transparent base material
  • an undercoat layer or an oligomer precipitation prevention layer may be provided as the layer C between the transparent conductive layer and the transparent base material.
  • the layer C may be laminated on at least one surface of the transparent conductive layer and the transparent base material.
  • layer C is not limited to these layers.
  • the layer C may be laminated on the transparent conductive layer or the transparent base material via the adhesive layer or the adhesive layer, if necessary.
  • the thickness of the entire touch sensor is, for example, 0.005 mm or more and 0.25 mm or less, and may be 0.01 mm or more and 0.2 mm or less.
  • the optical laminate may include an adhesive layer for attaching and laminating to other members constituting the image display device such as a panel member.
  • the optical laminate may further include a separator (third separator) that covers such an adhesive layer.
  • the description of the first adhesive layer and the second adhesive layer can be referred to.
  • the description of the first separator and the second separator can be referred to.
  • the adhesive layer may be arranged on one of the main surface side of the optical laminate on the visible side and the main surface side of the optical laminate on the opposite side to the visible side, and may be arranged on both main surface sides. It may have been.
  • the optical laminate provided with the third separator is used in an image display device with the third separator peeled off.
  • each separator is peeled off and used in an image display device.
  • the panel member included in the image display device includes, for example, at least an image display panel.
  • a sealing member thin film sealing layer or the like
  • the sealing member is usually arranged directly on the main surface of the image display panel on the visual side.
  • a known image display panel is used.
  • Examples of the image display panel include an organic electroluminescence (EL) panel.
  • EL organic electroluminescence
  • the image display device may include a laminate of a panel member and a protective member.
  • the protective member include a sheet or film (or substrate) that holds or protects the panel member.
  • the protective member may be one that holds the panel member, has an appropriate strength for protecting the panel member, and has an appropriate flexibility that does not hinder the flexibility of the flexible image display device.
  • a resin sheet or the like is used as the protective member. The material of the resin sheet is not particularly limited and can be appropriately selected depending on the type of the image display panel, for example.
  • the image display device may include a panel member with a touch sensor.
  • the panel member with a touch sensor is one in which the touch sensor and the panel member are integrated.
  • the other touch sensor as described above is unnecessary.
  • Such a panel member with a touch sensor includes, for example, a structure in which an antistatic capacity type touch sensor of a metal mesh electrode is formed on a thin film sealing layer of an organic light emitting diode (OLED). NS.
  • OLED organic light emitting diode
  • NS organic light emitting diode
  • the touch sensor the above description may be referred to.
  • the panel member with the touch sensor does not include the adhesive layer.
  • the panel member with a touch sensor may be provided with a protective member.
  • a protective member As the protective member, the above description can be referred to.
  • the thickness of the entire panel member with a touch sensor is, for example, 0.005 mm or more and 0.1 mm or less, and may be 0.01 mm or more and 0.05 mm or less.
  • the optical laminate or the image display device may include a decorative layer (third decorative layer) other than the first decorative layer and the second decorative layer, if necessary.
  • the optical laminate or the image display device may include one third decorative layer, or may include two or more third decorative layers.
  • the third decorative layer is arranged, for example, on the visual side of the touch sensor or the panel member with the touch sensor in contact with the adhesive layer.
  • the third decorative layer may be contained in a member other than the polarizing film.
  • the third decorative layer may be included in the polarizing film, but is not adhered to the polarizer.
  • the third decorative layer may be an ink layer, a metal thin film, a metal fine particle-containing layer, a laminate, or the like as described for the first decorative layer and the second decorative layer.
  • the thickness of the third decorative layer is, for example, 20 ⁇ m or less, and may be 15 ⁇ m or less. From the viewpoint of ensuring a higher concealing effect of the lead wiring, the thickness of the third decorative layer may be 10 nm or more, 30 nm or more, or 50 nm or more. These upper limit values and lower limit values can be arbitrarily combined.
  • the primer layer may be arranged on the surface of the member or layer (excluding the adhesive layer) to which the coating agent is applied prior to the application.
  • the primer layer contains, for example, at least one selected from the group consisting of metal compounds (metal oxides, metal nitrides, metal carbides, metal sulfides, etc.) and resin materials.
  • the primer layer is preferably transparent.
  • the thickness of the primer layer is, for example, 500 nm or less, and may be 100 nm or less or 30 nm or less.
  • the optical laminate and the image display device can be formed by, for example, laminating the constituent members, respectively.
  • the stacking order is not particularly limited and may be determined in consideration of workability and the like. Lamination may be performed while arranging an adhesive layer or an adhesive layer between the members (or layers) to be laminated.
  • FIG. 1 is a schematic cross-sectional view of a flexible image display device according to an embodiment of the present invention.
  • the flexible image display device 1 includes a laminated body of a window member 13, an optical film 10 including a polarizing film 11, a touch sensor 14, and a panel member 15.
  • the touch sensor 14 and the panel member 15 constitute a panel member with a touch sensor as described above.
  • the optical film 10 and the window member 13 are laminated with the adhesive layer 22 interposed therebetween.
  • An adhesive layer 23 is interposed between the touch sensor 14 and the optical film 10.
  • a laminated body of a configuration excluding the touch sensor 14 and the panel member 15 and a third separator corresponds to an optical laminated body.
  • the window member 13 is adhered to the first main surface of the polarizing film 11 via an adhesive layer 22.
  • the window member 13 includes, for example, a window film 131 and a hard coat layer 132 laminated on the window film 131.
  • the hard coat layer 132 is provided on the side opposite to the optical film 10 side of the window member 13.
  • the optical film 10 includes a polarizing film 11 and a retardation film 12 adhered to the second main surface of the polarizing film 11.
  • the polarizing film 11 has a polarizing element 111, a first decorative layer 112a and a first adhesive layer 113a bonded to one main surface of the polarizing element 111, and an adhesive layer 115 to the other main surface of the polarizing element 111.
  • a protective film 114 adhered to the surface is provided.
  • the first decorative layer 112a is directly adhered to the peripheral edge of one main surface of the polarizer 111 without an adhesive layer.
  • the first adhesive layer 113a is formed so as to cover the main surface of the first decorative layer 112a opposite to the polarizer 111 and the region where the first decorative layer 112a of the polarizer 111 is not adhered.
  • the main surface of the protective film 114 on the opposite side of the polarizing element 111 corresponds to the first main surface of the polarizing film 11, and the main surface of the first adhesive layer 113a on the opposite side of the polarizing element 111 is the polarizing film 11. Corresponds to the second main surface.
  • each of the first decorative layer 112a and the protective film 114 moisture permeability at a thickness of 25 ⁇ m is not more than 1500g / m 2 ⁇ 24h.
  • the low moisture permeability first decorative layer 112a is directly adhered to the peripheral edge of one main surface of the polarizer 111 without an adhesive layer, and also protects the low moisture permeability.
  • the film 114 is adhered to the other main surface of the polarizer 111 via an adhesive layer. As a result, the intrusion of moisture from the side surface of the polarizing film 11 into the polarizing film 11 is reduced. Therefore, the decolorization of the polarizer 111 can be reduced.
  • the protective film 114 is arranged on the first main surface side, and the first decorative layer 112a and the first adhesive layer 113a are arranged on the second main surface side, but the protective film 114 is arranged on the second main surface side.
  • the first decorative layer 112a and the first adhesive layer 113a may be arranged on the side and may be arranged on the first main surface side.
  • FIG. 2 is a schematic cross-sectional view of a flexible image display device according to another embodiment of the present invention.
  • the flexible image display device 101 of FIG. 2 has the same configuration as that of FIG. 1 except that the configuration of the polarizing film 11 is different from that of FIG. 1, and the description of FIG. 1 can be referred to.
  • the polarizing film 11 of the image display device 101 is the same as the polarizing film 11 of FIG. 1 except that the protective film 114 and the adhesive layer 115 are replaced with the second decorative layer 112b and the second adhesive layer 113b.
  • the second decorative layer 112b is directly adhered to the peripheral edge of the other main surface of the polarizer 111 without an adhesive layer.
  • the second adhesive layer 113b is formed so as to cover the main surface of the second decorative layer 112b opposite to the polarizer 111 and the region where the second decorative layer 112b of the polarizer 111 is not adhered.
  • the low-moisture-permeable first decorative layer 112a and the second decorative layer 112b are directly attached to the peripheral edges of each main surface of the polarizer 111 without an adhesive layer. It is glued. As a result, the intrusion of moisture from the side surface of the polarizing film 11 into the polarizing film 11 is reduced. Therefore, the decolorization of the polarizer 111 can be reduced.
  • Example 1 (1) Preparation of Evaluation Sample An evaluation sample of a laminate containing the polarizing film 11 as shown in FIG. 3 was prepared by the following procedure.
  • a coating liquid is applied to the surface of the base material so that the film thickness after drying is 12 ⁇ m, and the PVA-based resin layer is formed on the base material by drying in an atmosphere of 60 ° C. for 10 minutes by hot air drying.
  • the provided laminate was produced.
  • the obtained laminate was first stretched 1.8 times at a free end (auxiliary stretching in the air) at 130 ° C. in the air to produce a stretched laminate.
  • a step of insolubilizing the PVA layer in which the PVA molecules contained in the stretched laminate were oriented was performed by immersing the stretched laminate in a boric acid insoluble aqueous solution having a liquid temperature of 30 ° C. for 30 seconds.
  • the boric acid insolubilized aqueous solution in this step is a boric acid aqueous solution having a boric acid content of 3 parts by mass with respect to 100 parts by mass of water.
  • a colored laminate was produced by dyeing the obtained stretched laminate.
  • the stretched laminate is mixed with a dyeing solution containing iodine and potassium iodide at a liquid temperature of 30 ° C., and the single transmittance of the PVA layer constituting the polarizing element finally produced is 40 to 44%.
  • the PVA layer contained in the stretched laminate was stained with iodine by immersing the PVA layer in the stretched laminate for a predetermined time.
  • the staining solution is an aqueous solution containing iodine and potassium iodide (iodine concentration: 0.1 to 0.4% by mass, potassium iodide concentration: 0.7 to 2.8% by mass, iodine and potassium iodide). The ratio of the concentrations of: 1: 7).
  • the boric acid cross-linked aqueous solution in this step is an aqueous solution containing boric acid and potassium iodide (boric acid content: 3 parts by mass with respect to 100 parts by mass of water, potassium iodide content: 3 parts by mass with respect to 100 parts by mass of water). Department).
  • the obtained colored laminate is finally stretched 3.05 times in the boric acid aqueous solution at a stretching temperature of 70 ° C. in the same direction as the above stretching in air (stretching in boric acid water).
  • a laminate having a draw ratio of 5.50 times was obtained.
  • the obtained laminate was taken out from the boric acid aqueous solution, and the boric acid adhering to the surface of the PVA layer was washed with a potassium iodide aqueous solution (potassium iodide content: 4 parts by mass with respect to 100 parts by mass of water).
  • the washed laminate was dried by a drying step with warm air at 60 ° C.
  • the thickness of the polarizer 111 contained in the dried laminate was 5 ⁇ m.
  • (B) Preparation of Protective Film 114 As the protective film 114, an acrylic film obtained by molding a methacrylic resin pellet having a glutarimide ring unit into a film by extrusion molding and then stretching it was used. The thickness of the protective film 114 was 40 ⁇ m.
  • the protective film 114 and the polarizer 111 of the laminate obtained in (a) above are bonded together using an adhesive (active energy ray-curable adhesive), and the adhesive is cured by irradiating with ultraviolet rays under the following conditions. I let you. Next, by removing the base material, a laminate (polarizing film) of the protective film 114 and the polarizer 111 bonded via the adhesive layer 115 was produced.
  • an adhesive active energy ray-curable adhesive
  • Gallium-filled metal halide lamp Fusion UV Systems.
  • Bulb V bulb Peak illuminance: 1600 mW / cm 2
  • Moisture permeability when the thickness 25 ⁇ m of the protective film 114 obtained by above procedure was 295g / m 2 ⁇ 24h.
  • the adhesive was prepared by mixing the following components at a ratio such that the content in 100% by mass of the adhesive had the following value, and stirring at 50 ° C. for 1 hour.
  • Hydroxyethyl acrylamide ... 11.4% by mass Tripropylene glycol diacrylate ... 57.1% by mass Acryloyl morpholine ... 11.4% by mass 2-Acetacetoxyethyl methacrylate ... 4.6% by mass Acrylic polymer (ARUFON UP-1190, manufactured by Toagosei Co., Ltd.) ... 11.4% by mass 2-Methyl-1- (4-methylthiophenyl) -2-morpholinopropane-1-one ... 2.8% by mass Diethyl thioxanthone ... 1.3% by mass
  • the inside of the reactor was heated with a heat medium, and stirring was started when the temperature inside the reactor reached 100 ° C. 40 minutes after the start of the temperature rise, the temperature inside the reactor was brought to 220 ° C. and controlled to maintain this temperature. Decompression was started when the temperature in the reactor reached 220 ° C., and the pressure after 90 minutes was 13.3 kPa.
  • the phenol vapor produced by the polymerization reaction was guided to a reflux condenser at 100 ° C., the monomer component contained in a small amount in the phenol vapor was returned to the reactor, and the phenol vapor that did not condense was guided to a condenser at 45 ° C. for recovery.
  • Nitrogen was introduced into the first reactor and the pressure was once restored to atmospheric pressure, and then the oligomerized reaction solution in the first reactor was transferred to the second reactor. Then, the temperature rise and depressurization in the second reactor were started, and the temperature in the first reactor was set to 240 ° C. and the pressure was set to 0.2 kPa in 50 minutes. Then, the polymerization was allowed to proceed until the stirring power reached a predetermined value. When the stirring power reached a predetermined value, nitrogen was introduced into the reactor to repressurize, the produced polyester carbonate was extruded into water, and the strands were cut to obtain pellets.
  • (C2) Preparation of Laminated Film Containing Second Phase Difference Layer
  • the following chemical formula (I) (numbers 65 and 35 in the formula represent the mol% of the monomer unit and is represented by a block polymer for convenience: weight average molecular weight. 20 parts by mass of the side chain type liquid crystal polymer represented by 5000), 80 parts by mass of a polymerizable liquid crystal (manufactured by BASF: trade name Pariocolor LC242) showing a nematic liquid crystal phase, and a photopolymerization initiator (manufactured by Ciba Speciality Chemicals: trade name Irgacure). 907) A liquid crystal coating solution was prepared by dissolving 5 parts by mass in 200 parts by mass of cyclopentanone.
  • the obtained liquid crystal coating liquid is applied to a base film (norbornene resin film: manufactured by Nippon Zeon Corporation, trade name "Zeonex”) using a bar coater, and then heated and dried at 80 ° C. for 4 minutes.
  • the liquid crystal was oriented by.
  • a liquid crystal solidified layer thickness: 0.58 ⁇ m
  • nx is the refractive index in the direction in which the in-plane refractive index of the liquid crystal solidified layer is maximized (that is, the slow-phase axial direction).
  • ny is the refractive index in the plane of the liquid crystal solidified layer in the direction orthogonal to the slow phase axis (that is, the phase advance axis direction).
  • NZ is the refractive index in the thickness direction of the liquid crystal solidified layer.
  • the reaction solution was heated to 130 ° C., and toluene, the chain transfer agent and the unreacted monomer were dried and removed to obtain a solid acrylic oligomer.
  • the weight average molecular weight of the acrylic oligomer was 5100, and the glass transition temperature (Tg) was 130 ° C.
  • prepolymer composition 43 parts by mass of lauryl acrylate, 44 parts by mass of 2-ethylhexyl acrylate, 6 parts by mass of 4-hydroxybutyl acrylate, and 7 parts by mass of N-vinyl-2-pyrrolidone, and as a photopolymerization initiator.
  • a prepolymer composition (polymerization rate: about 10%) was obtained by mixing 0.015 parts by mass of "Irgacure 184" manufactured by BASF and irradiating with ultraviolet rays to carry out polymerization.
  • the inks constituting the first decorative layer 112a are a soluble fluorescent pigment (manufactured by Teikoku Inks Manufacturing Co., Ltd., MIX-HF screen ink), a curing agent (manufactured by Teikoku Inks Manufacturing Co., Ltd., 210 curing agent), and a solvent ( Prepared by mixing with C-002 solvent manufactured by Teikoku Printing Inks.
  • concentrations of the soluble fluorescent pigment and the curing agent in the ink were 85% by mass and 3% by mass, respectively.
  • the soluble fluorescent pigment and the curing agent were uniformly dispersed in the ink.
  • the ink was in a uniform state with no precipitation or aggregation even when left at 5 ° C. overnight.
  • the thickness of the pressure-sensitive adhesive layer (first pressure-sensitive adhesive layer 113a) composed of the acrylic pressure-sensitive adhesive was 25 ⁇ m.
  • Moisture permeability when the thickness 25 ⁇ m of the first adhesive layer 113a obtained by the above-described procedure was 4678g / m 2 ⁇ 24h.
  • the storage elastic modulus of the pressure-sensitive adhesive layer composed of the acrylic pressure-sensitive adhesive was determined by the procedure described above and found to be 0.03 MPa.
  • the decolorization of the polarizer 111 was evaluated by Raman spectroscopy under the following conditions. More specifically, the sample is fixed so that the polarizer 111 can be analyzed from the protective film 114 side, and the region of the length 550 ⁇ m and the width 50 ⁇ m is focused inward from the end face of the polarizer 111. Mapping analysis was performed from the protective film 114 side (visual side in the display device). The Raman spectrum was measured at a total of four points where the distance from the end face of the polarizer 111 was 50 ⁇ m, 100 ⁇ m, 250 ⁇ m, and 500 ⁇ m.
  • Measuring device SNOM / AFM / Raman multifunction device (WItec alpha300RSA) Excitation wavelength: 532 nm Measurement wavelength range: 125 cm -1 to 3800 cm -1 Objective lens: 10x Measurement pitch: 2 ⁇ m Detector: EMCCD
  • the first decorative layer 112a was not formed on the main surface of the polarizer 111, but was formed in a state of being adhered to the peripheral edge of the main surface of the retardation film 112 on the first retardation layer side. .. Except for this, an optical film 10 was prepared and a sample was prepared by attaching a glass plate S in the same manner as in Example 1, and evaluation was performed.
  • Example 2 As the protective film 114, a triacetyl cellulose film (thickness 40 ⁇ m) was used instead of the acrylic film. Except for this, an optical film 10 was prepared in the same manner as in Example 1, and a sample was prepared by attaching a glass plate S and evaluated. In this case, the moisture permeability at a thickness 25 ⁇ m of the protective film 114 obtained by above procedure was 2151g / m 2 ⁇ 24h.
  • the Raman spectra of Example 1 and Comparative Example 1 are shown in FIGS. 4 and 5, respectively.
  • the Raman spectrum at each measurement point is represented from top to bottom in the order in which the distance between the measurement points is closer to the end face of the polarizer 111.
  • the Raman spectra of polarizers containing iodine, Raman shift is at a position of the 106cm -1 and 156cm -1, I 5 - and I 3 - Raman lines based on is observed. As shown in FIG.
  • the polarizing film or optical laminate of the present invention can be used in an image display device such as a flexible image display device.
  • Optical film 11 Polarizing film 111: Polarizer 112a: First decorative layer 112b: Second decorative layer 113a: First adhesive layer 113b: Second adhesive layer 114: Protective film 115: Adhesive layer 12: Phase difference film 13: Window member 131: Window film 132: Hard coat layer 14: Touch sensor 15: Panel members 22, 23: Adhesive layer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Polarising Elements (AREA)
  • Laminated Bodies (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un film polarisant pourvu : d'un polariseur ; d'une première couche décorative et d'une première couche adhésive, qui sont disposées sur un côté surface principale du polariseur ; et d'une seconde couche décorative ainsi que d'une seconde couche adhésive ou d'un film protecteur, qui sont disposés sur l'autre côté surface principale du polariseur. La première couche décorative est directement liée à la partie périphérique de la première surface principale sans couche de liaison interposée entre celles-ci ; et la première couche adhésive recouvre une surface de la première couche décorative, ladite surface étant sur le côté inverse du polariseur, et des régions de ladite surface principale auxdites régions de la première couche décorative n'étant pas liées. La seconde couche décorative est directement liée à la partie périphérique de l'autre surface principale sans couche de liaison interposée entre celles-ci ; et la seconde couche adhésive recouvre une surface de la seconde couche décorative, ladite surface étant sur le côté inverse du polariseur, et des régions de l'autre surface principale auxdites régions de la seconde couche décorative n'étant pas liées. Le film protecteur est directement lié à l'autre surface principale sans couche adhésive interposée entre eux ; ou en variante, le film protecteur est lié à l'autre surface principale avec une couche de liaison interposée entre eux. La première couche décorative, la seconde couche décorative et le film protecteur ont un taux de transmission de vapeur d'eau inférieur ou égal à 1 500 g/m2·24 h à une épaisseur de 25 µm.
PCT/JP2020/041387 2020-04-17 2020-11-05 Film polarisant, corps multicouche optique et dispositif d'affichage d'image WO2021210204A1 (fr)

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KR1020217010825A KR102454310B1 (ko) 2020-04-17 2020-11-05 편광 필름, 광학 적층체, 및 화상 표시 장치

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JP2020074430A JP2021173773A (ja) 2020-04-17 2020-04-17 偏光フィルム、光学積層体、および画像表示装置

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06256537A (ja) * 1992-02-26 1994-09-13 Kuraray Co Ltd 延伸フィルムまたはシート
KR20080084352A (ko) * 2007-03-16 2008-09-19 엘지이노텍 주식회사 차광잉크가 도포된 편광판을 포함하는 액정표시장치
JP2015111236A (ja) * 2013-10-31 2015-06-18 日東電工株式会社 液晶パネル及び該液晶パネルに用いられる偏光子積層体
JP2017194671A (ja) * 2016-04-18 2017-10-26 日東電工株式会社 液晶表示装置
KR20190020925A (ko) * 2017-08-22 2019-03-05 엘지디스플레이 주식회사 편광 필름, 상기 편광 필름을 포함하는 표시 장치, 및 상기 편광 필름의 제조 방법

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
KR101447015B1 (ko) * 2006-12-27 2014-10-06 군제 가부시키가이샤 편광판 보호 필름, 편광판, 및 저항막식 터치 패널
KR101871565B1 (ko) * 2016-01-19 2018-06-27 삼성에스디아이 주식회사 편광판 및 이를 포함하는 표시 장치
KR102126054B1 (ko) * 2017-12-21 2020-06-23 삼성에스디아이 주식회사 편광판 및 이를 포함하는 광학표시장치
JP2020019277A (ja) * 2018-07-24 2020-02-06 住友化学株式会社 積層体およびその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06256537A (ja) * 1992-02-26 1994-09-13 Kuraray Co Ltd 延伸フィルムまたはシート
KR20080084352A (ko) * 2007-03-16 2008-09-19 엘지이노텍 주식회사 차광잉크가 도포된 편광판을 포함하는 액정표시장치
JP2015111236A (ja) * 2013-10-31 2015-06-18 日東電工株式会社 液晶パネル及び該液晶パネルに用いられる偏光子積層体
JP2017194671A (ja) * 2016-04-18 2017-10-26 日東電工株式会社 液晶表示装置
KR20190020925A (ko) * 2017-08-22 2019-03-05 엘지디스플레이 주식회사 편광 필름, 상기 편광 필름을 포함하는 표시 장치, 및 상기 편광 필름의 제조 방법

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TW202144177A (zh) 2021-12-01

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