WO2011071075A1 - 表面保護パネル及び液晶画像表示装置 - Google Patents
表面保護パネル及び液晶画像表示装置 Download PDFInfo
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- WO2011071075A1 WO2011071075A1 PCT/JP2010/072011 JP2010072011W WO2011071075A1 WO 2011071075 A1 WO2011071075 A1 WO 2011071075A1 JP 2010072011 W JP2010072011 W JP 2010072011W WO 2011071075 A1 WO2011071075 A1 WO 2011071075A1
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- Prior art keywords
- gas barrier
- resin
- liquid crystal
- surface protection
- transparent
- Prior art date
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- 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
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
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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
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
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- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- 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
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- 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
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- 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
- G02B1/11—Anti-reflection coatings
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- 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
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- 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
- G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
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- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133331—Cover glasses
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- 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
- G02F1/133342—Constructional arrangements; Manufacturing methods for double-sided displays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/266—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension of base or substrate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31507—Of polycarbonate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/31739—Nylon type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
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- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31931—Polyene monomer-containing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/31935—Ester, halide or nitrile of addition polymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
Definitions
- the present invention relates to a liquid crystal image display device provided with a liquid crystal display panel such as a mobile phone, a portable game machine, a portable personal computer, a mobile terminal, a television, a touch panel, etc., and is laminated outside the liquid crystal display panel, in other words, on the viewing side of the liquid crystal display panel. It relates to a surface protection panel.
- a liquid crystal display panel such as a mobile phone, a portable game machine, a portable personal computer, a mobile terminal, a television, a touch panel, etc.
- a glass plate as a surface protection panel has been arranged on the viewing side of the liquid crystal display panel for the purpose of protecting the surface of the liquid crystal display panel.
- transparent synthetic resin plates such as acrylic plates and polycarbonate plates have been used as materials to replace glass substrates.
- Patent Document 1 a transparent gas barrier film formed by forming a metal oxide film on a base film such as a biaxially stretched polyethylene terephthalate (PET) film or a biaxially stretched polypropylene (OPP) film is used as a transparent synthetic resin.
- a transparent gas barrier film formed by forming a metal oxide film on a base film such as a biaxially stretched polyethylene terephthalate (PET) film or a biaxially stretched polypropylene (OPP) film is used as a transparent synthetic resin.
- PET biaxially stretched polyethylene terephthalate
- OPP biaxially stretched polypropylene
- the present invention provides a new image display device in which rainbow colors do not appear or shades do not appear in the display screen even when the display screen is viewed through sunglasses equipped with a polarizing lens, and is used for the same.
- a new surface protection panel will be provided.
- the present invention relates to a surface protection panel disposed on the outside of the liquid crystal display panel, that is, the viewing side of the liquid crystal display panel, in the liquid crystal image display device including the liquid crystal display panel, on one side or both sides of the transparent synthetic resin plate.
- a surface protection panel comprising a structure in which a gas barrier transparent resin film having a gas barrier layer is laminated, wherein neither the transparent synthetic resin plate nor the gas barrier transparent resin film is substantially stretched. Propose.
- “not substantially stretched” means that it is not intentionally stretched in each production process.
- the present invention also provides a surface protection panel disposed on the outside of the liquid crystal display panel, that is, on the viewing side of the liquid crystal display panel, in the liquid crystal image display device including the liquid crystal display panel, and one or both sides of the transparent synthetic resin plate And a gas barrier transparent resin film having a gas barrier layer, wherein the transparent synthetic resin plate and the gas barrier transparent resin film are non-oriented or uniaxially oriented.
- non-orientation means that an orientation treatment such as a stretching operation is not intentionally performed in each manufacturing process.
- uniaxially oriented means that there is an orientation direction only in one direction by intentional orientation treatment such as uniaxial stretching, and there is no intentional orientation treatment in one direction. It is meant to include the case of having only the orientation direction.
- a gas barrier laminated film obtained by laminating a gas barrier layer on a biaxially stretched film made of PET, PEN or the like has been widely used.
- the present inventor uses an unstretched film, a non-oriented film or a uniaxially oriented film in place of such a biaxially stretched film, so that even when viewing an image through sunglasses equipped with a polarizing lens, It has succeeded in preventing rainbow colors from appearing and shading.
- a surface protection panel according to the present embodiment is a surface protection panel disposed outside the liquid crystal display panel, that is, on the viewing side in a liquid crystal image display device including a liquid crystal display panel.
- the gas barrier transparent resin film having a gas barrier layer is laminated on one side or both sides of the transparent synthetic resin plate.
- the “viewing side” means the viewer side when the user visually recognizes the liquid crystal image of the liquid crystal image display device.
- the transparent synthetic resin plate is a member mainly serving as a protective panel for preventing damage to the liquid crystal image display device, and the material thereof is not particularly limited.
- species or 2 or more types of resin can be illustrated.
- polycarbonate resins are preferable from the viewpoints of transparency, heat resistance, and impact resistance.
- the transparent synthetic resin plate of the surface protective panel is not substantially stretched, non-oriented, or uniaxially oriented.
- the transparent synthetic resin plate is not biaxially oriented and has a smaller optical anisotropy than a transparent synthetic resin plate having the same composition formed by biaxial stretching. Therefore, it is preferable that the transparent synthetic resin plate is formed by, for example, forming a raw material resin in a solution state or a monomer state by a solution casting method, and then stretching or uniaxially stretching the resin.
- a transparent resin plate with small optical anisotropy can be formed by pressure bonding with a metal belt or an elastic roll having a thin metal layer. For example, when a sheet body (including a plate body) is formed by melt extrusion molding, it may be uniaxially oriented even if it is not stretched.
- the surface protection panel is arranged so that the orientation axis is aligned with the orientation axis of the polarizing plate, thereby providing a rainbow in the display screen. It is possible to eliminate the appearance of color and to prevent the occurrence of light and shade depending on the viewing angle.
- the retardation value of the transparent synthetic resin plate is preferably 50 nm or less, and more preferably 25 nm or less. If the retardation value is adjusted to this range to reduce the optical anisotropy, the orientation of the orientation axis of the transparent synthetic resin plate can be changed as described above even if the transparent synthetic resin plate is uniaxially oriented. It is not necessary to match the direction of the orientation axis, and no matter what direction it is arranged, the rainbow color does not appear in the display screen, and it is possible to prevent the occurrence of light and shade depending on the viewing angle.
- the thickness of the transparent synthetic resin plate is not particularly limited as long as it can play a role of preventing damage to the image display device.
- the thickness is preferably 0.3 mm to 5 mm, particularly preferably 0.5 mm to 3 mm.
- the gas barrier transparent resin film is a film having a structure in which a gas barrier layer is laminated on one side or both sides of a base film. Since this transparent resin film should just be equipped with the structure formed by laminating
- the gas barrier transparent resin film of the surface protection panel is not substantially stretched, non-oriented, or uniaxially oriented.
- the gas barrier transparent resin film is not biaxially oriented and has small optical anisotropy. That is, it is important that the gas barrier transparent resin film has a smaller optical anisotropy than the gas barrier transparent resin film having the same composition formed by biaxial stretching. Therefore, it is preferable that the gas barrier transparent resin film is formed by, for example, forming a raw material resin in a solution state or a monomer state by a solution casting method and then not stretching or uniaxially stretching.
- a transparent resin plate with small optical anisotropy can be formed by pressure bonding with a metal belt or an elastic roll having a thin metal layer. Further, as described above, for example, when a film is formed by melt extrusion molding, the film may be uniaxially oriented even if it is not stretched.
- the surface protection panel is arranged in the display screen so that the orientation axis is aligned with the orientation axis of the polarizing plate. It is possible to suppress the appearance of rainbow colors and eliminate the occurrence of light and shade depending on the viewing angle.
- the synthetic resin plate and the gas barrier transparent resin film may be either non-oriented or uniaxially oriented.
- the synthetic resin plate may be non-oriented and the gas barrier transparent resin film may be uniaxially oriented, or the synthetic resin plate may be uniaxially oriented and the gas barrier transparent resin film may be non-oriented. Also good. When both are uniaxially oriented, it is necessary to match the orientation directions of both.
- the retardation value of the gas barrier transparent resin film is preferably 50 nm or less, and more preferably 25 nm or less. If the retardation value is adjusted to this range to reduce the optical anisotropy, even if the gas barrier transparent resin film is uniaxially oriented, the orientation of the orientation axis of the gas barrier transparent resin film is changed as described above. It is not necessary to match the direction of the orientation axis of the polarizing plate, and no matter what direction it is arranged, the rainbow color does not appear in the display screen, and it is possible to prevent the occurrence of light and shade depending on the viewing angle.
- the base film of the gas barrier transparent resin film mainly serves as a support for the gas barrier layer, and the material is not particularly limited.
- the material is not particularly limited.
- the material is not particularly limited.
- the resin can be exemplified.
- a cellulose-based resin, and among them, triacetyl cellulose (TAC) is preferable.
- the thickness of the base film is not particularly limited as long as it can play a role such as mechanical strength at the time of forming the gas barrier layer and prevention of wrinkle at the time of pressure bonding. In general, it is preferably 10 ⁇ m to 188 ⁇ m, particularly preferably 25 ⁇ m to 80 ⁇ m.
- the gas barrier layer can be formed of, for example, one or more metal compounds selected from the group consisting of silicon oxide, aluminum oxide, zinc oxide, indium tin oxide, silicon nitride, and magnesium fluoride.
- silicon oxide and aluminum oxide are preferable because they can form a transparent and dense film at low cost.
- the method for forming the gas barrier layer is not particularly limited, and preferred examples include physical vapor deposition (PVD), chemical vapor deposition (CVD), and sputtering.
- the thickness of the gas barrier layer is not particularly limited, but is 0.1 nm to 500 nm, preferably 0.5 nm to 100 nm, more preferably 1 nm to 50 nm. If it is thinner than this, it will be difficult to obtain sufficient gas barrier properties, and if it is too thick, cracks and peeling will easily occur in the deposited film.
- primer layer between a base film and a gas barrier layer for the adhesive improvement of a base film and a gas barrier layer.
- the method for forming the primer layer include a method of applying a primer coat agent to the surface of the base film layer.
- primer coating agents include solvent-soluble or water-soluble polyester resins, isocyanate resins, urethane resins, acrylic resins, vinyl alcohol resins, ethylene vinyl alcohol resins, vinyl modified resins, epoxy resins, oxazoline group-containing resins, modified styrene resins.
- Modified silicone resins and alkyl titanates can be used alone or in combination of two or more.
- the gas barrier transparent resin film may be laminated directly on the transparent synthetic resin plate, or may be laminated via an adhesive layer.
- the method of directly laminating the gas barrier transparent resin film on the transparent synthetic resin plate is not particularly limited, and examples thereof include a method of directly laminating by heat fusion or the like.
- the adhesive examples include a dry laminate adhesive, a UV curable adhesive, an epoxy adhesive, and a thermoplastic adhesive.
- an acrylic adhesive that is transparent, weather resistant, and has high cohesive strength is preferable.
- the total light transmittance (JIS K 73610-1) of the adhesive is preferably 85% or more, and particularly preferably 88% or more.
- the haze (JIS K 7136) is preferably 3% or less, particularly preferably 1% or less.
- this surface protection panel should just be equipped with the structure formed by laminating
- a gas barrier transparent resin film is laminated on one side of a transparent synthetic resin plate, and one or more of an antireflection layer, an antifouling layer, and a hard coat layer are laminated on the other side.
- the structure which becomes can also be employ
- the surface protection panel can constitute a liquid crystal image display device by bringing the gas barrier layer surface side into close contact with the liquid crystal display panel via an adhesive layer.
- a liquid crystal image display device that is used outdoors for example, a liquid crystal image display device that includes a liquid crystal display panel such as a mobile phone, a portable game machine, a portable personal computer, a mobile terminal, a television, and a touch panel is more preferably configured. Can do.
- various pressure-sensitive adhesives can be used for the pressure-sensitive adhesive layer, but acrylic-based pressure-sensitive adhesives that are transparent, weather resistant, and highly cohesive are preferable.
- acrylic pressure-sensitive adhesive for example, an adhesive made of an adhesive composition containing an acrylic resin-based base polymer, a crosslinking monomer, a crosslinking initiator, and other additives as necessary is preferable.
- the base polymer it is preferable to use a (meth) acrylic acid ester copolymer, particularly a (meth) acrylic acid alkyl ester copolymer.
- the crosslinking monomer an acrylic crosslinking monomer is preferably used.
- polyfunctional (meth) acrylate such as bifunctional (meth) acrylate, trifunctional (meth) acrylate, and tetrafunctional (meth) acrylate, or monofunctional to tetrafunctional (meth)
- a monomer composed of polyfunctional (meth) acrylate such as a mixture of two or more acrylates.
- crosslinking initiator it is preferable to use a photoinitiator, and either a cleavage type photoinitiator or a hydrogen abstraction type photoinitiator may be used alone, or both may be used in combination. .
- Sheet generally refers to a product that is thin by definition in JIS and generally has a thickness that is small and flat for the length and width.
- film is compared to the length and width.
- JISK6900 Japanese Industrial Standard
- a film having a thickness of 100 ⁇ m or more is sometimes referred to as a sheet, and a film having a thickness of less than 100 ⁇ m is sometimes referred to as a film.
- the term “film” is included and the term “sheet” is used. In some cases, “film” is included. Strictly speaking, the definition of “adhesive” and “adhesive” differ from each other, but from the standpoint that there is no difference in the appearance of an image if any is used as long as it is transparent. In terms of the wording, it is not necessary to distinguish the two from each other. Therefore, the term “adhesive” includes “adhesive”, and the term “adhesive” includes “adhesive”.
- X is preferably greater than X” and “preferably Y”, with the meaning of “X to Y” unless otherwise specified. It is meant to include “less than”.
- more than X when expressed as “more than X” (X is an arbitrary number), unless otherwise specified, it means “preferably greater than X” and includes “Y or less” (Y is an arbitrary number) When expressed as (numerical), it means “preferably smaller than Y” unless otherwise specified.
- Example 1 As the transparent synthetic resin plate, an unstretched polycarbonate resin plate having a thickness of 2 mm, a width of 300 mm, and a length of 300 mm (melt extrusion molding, uniaxial orientation, trade name “STELLA S300” (manufactured by Mitsubishi Plastics, Inc.) was used. Moreover, as a gas barrier transparent resin film, aluminum oxide is vacuum-deposited on the surface of an unstretched film (non-oriented) made of triacetylcellulose (TAC) with a thickness of 80 ⁇ m, and an acrylic adhesive (Soken Chemical Co., Ltd.) on the back surface.
- TAC triacetylcellulose
- SK Dyne 1882 (addition ratio of curing agent is recommended) was applied, the solvent was evaporated, and a film cured at room temperature was used.
- an acrylic adhesive (manufactured by Soken Chemical Co., Ltd.) is applied to the surface of an unstretched film (non-oriented) made of triacetylcellulose (TAC) having a thickness of 80 ⁇ m which has been subjected to antifouling antireflection treatment.
- SK Dyne 1882 (addition ratio of curing agent recommended composition) was applied, and after the solvent was volatilized, a film (trade name “Realak # 8701UV-S”, manufactured by NOF Corporation) was prepared by curing at room temperature. .
- the acrylic adhesive side of the gas barrier transparent resin film is laminated on one side of the transparent synthetic resin plate, and the acrylic adhesive side of the antifouling antireflection film is laminated on the other side of the transparent synthetic resin plate. Laminated and used as a surface protection panel (sample).
- the “transparent film substrate” in Table 1 indicates a gas barrier transparent resin film.
- Example 2 As the transparent synthetic resin plate, an unstretched polycarbonate resin plate (melt extrusion molding, uniaxial orientation, trade name “STELLA S300” (manufactured by Mitsubishi Plastics) having a thickness of 2 mm ⁇ width of 300 mm ⁇ length of 300 mm was used. Also, as a gas barrier transparent resin film, a polycarbonate resin raw material (Caliber 303-15, manufactured by Sumitomo Dow) is melt-extruded and niped by an elastic roll having a metal cast roll and a metal film disposed on the surface, and an optical film having a thickness of 80 ⁇ m is obtained.
- a polycarbonate resin raw material (Caliber 303-15, manufactured by Sumitomo Dow) is melt-extruded and niped by an elastic roll having a metal cast roll and a metal film disposed on the surface, and an optical film having a thickness of 80 ⁇ m is obtained.
- a sheet having a small anisotropy was collected, aluminum oxide was vacuum-deposited on the surface, and an acrylic adhesive (SK Dyne 1882 manufactured by Soken Chemical Co., Ltd .; the addition ratio of the curing agent was recommended) was applied to the back surface.
- An acrylic adhesive (SK Dyne 1882 manufactured by Soken Chemical Co., Ltd .; the addition ratio of the curing agent was recommended) was applied to the back surface.
- a stretched film (non-oriented) was used.
- the acrylic adhesive side of the gas barrier transparent resin film is laminated on one side of the transparent synthetic resin plate, and an acrylic hard coat (Seika Beam EXF001W, manufactured by Dainichi Chemical) on the other side of the transparent synthetic resin plate.
- an acrylic hard coat (Seika Beam EXF001W, manufactured by Dainichi Chemical) on the other side of the transparent synthetic resin plate.
- Example 3 As a transparent synthetic resin plate, an unstretched polymethyl methacrylate resin plate (thickness 0.8 mm ⁇ width 300 mm ⁇ length 300 mm) (PMMA plate (non-orientated) molded by the casting method, trade name “MR100”, Mitsubishi Rayon Co., Ltd.) A surface protection panel (sample) was produced in the same manner as in Example 1 except that the product manufactured by the method and the retardation value ⁇ 10 nm) was used.
- Example 1 A surface protection panel (sample) was produced according to Example 2 described in JP-A No. 2003-145658.
- the transparent synthetic resin plate a PMMA plate (unstretched, non-oriented, trade name: Acrylite L001, manufactured by Mitsubishi Rayon Co., Ltd.) having a thickness of 2 mm, a width of 300 mm, and a length of 300 mm was used.
- a gas barrier transparent resin film a 12 ⁇ m thick biaxially stretched transparent deposited PET film with aluminum oxide deposited on one side (trade name: Fine Barrier AT, manufactured by Reiko Co., Ltd., stretch ratio of 3 ⁇ 3 times or more) ) was used.
- a dry laminate adhesive is applied to the aluminum oxide vapor deposition side of the biaxially stretched transparent vapor-deposited PET film, and both sides of the PMMA plate are treated with a UV irradiation device (160 w / cm, 5 m / min, height 10 cm).
- Axial stretched transparent vapor-deposited PET films were laminated on both sides of the PMMA plate via a laminate roll. This was cured at 23 ° C. ⁇ 50% RH for 7 days to obtain a transparent gas barrier film laminate.
- a float glass plate having a thickness of 3 mm having the same size was joined with a soft acrylic adhesive sheet having a thickness of 0.5 mm to obtain a surface protection panel (sample).
- the soft acrylic pressure-sensitive adhesive sheet used for bonding was prepared by melting and stirring acetylacetone zinc salt: 0.5 part by weight and acetylacetone aluminum salt: 0.7 part by weight with respect to 100 parts by weight of the acrylate copolymer. It was obtained by forming a sheet between films.
- Example 2 A surface protection panel (sample) was produced according to Example 1 described in JP-A-2007-152847.
- Stretch-modified PET film product name: Soft Shine A1532, manufactured by Toyobo Co., Ltd., stretch ratio of 3 ⁇ 3 times or more
- a 100 ⁇ m-thick silicon oxide so that the total light transmittance (JIS K 7361) is 90%.
- JIS K 7361 total light transmittance
- an acrylic adhesive (SK Dyne 1882 manufactured by Soken Chemical Co., Ltd .; recommended addition ratio of curing agent) is applied to the silicon-treated surface of the release film (MRF38 manufactured by Mitsubishi Chemical Polyester Co., Ltd.).
- the adhesive layer having a thickness of 20 ⁇ m was formed by coating and drying, and the non-deposition surface of the water vapor barrier transparent film was layered on the adhesive layer and pasted through a pressure roller.
- a protective film (Sekisui Chemical Co., Ltd., 622B) was bonded to the vapor-deposited surface side of the water vapor barrier transparent film and wound into a roll bundle to obtain a take-up roll.
- a polycarbonate plate having a thickness of 2.0 mm is extruded using an extruder and a rolling roller in a dustproof chamber and conveyed onto the production line.
- the adhesive water vapor barrier transparent film produced as described above is used.
- the adhesive layer is exposed while peeling from the take-up roll and peeling off the release film.
- a protective film (Sekisui Chemical Co., Ltd. 624A) is fed out to deposit silicon oxide with adhesive.
- the film and the protective film were bonded to the polycarbonate plate through a pressure roller (linear pressure 20 kg / cm) to obtain a surface protective panel (sample).
- Table 1 shows the results of image observation in which each of the surface protection panels (samples) prepared in the above Examples and Comparative Examples was placed on the display surface of a TFT liquid crystal display device (including a polarizing plate) and visually recognized through polarized glasses. Shown in At this time, the surface of the gas barrier film of each surface protection panel (sample) was laminated on the display surface of the TFT type liquid crystal display device using a transparent UV curable adhesive. In Examples 1 and 2, the surface protective panel (sample) was arranged so that the orientation axis of the transparent synthetic resin plate coincided with the orientation axis of the polarizing plate in the TFT type liquid crystal display device. .
- polarizing glasses glasses having a general polarizing plate used for a liquid crystal panel as a lens were used.
- the surface protection panel (sample) arranged on the display surface of the liquid crystal display device is rotated so as to be parallel to the display surface, and the display surface is visually observed through the polarizing glasses to check whether there is any image discoloration.
- the retardation value shown in Table 1 was measured by the parallel Nicol rotation method.
- the light emitted from the liquid crystal display screen is composed of specific linearly polarized light.
- a transparent resin plate or a gas barrier film laminated on a transparent resin plate is biaxially stretched, linearly polarized light is disturbed by the stretch axis, and the image changes to rainbow colors while rotating polarized glasses. It is considered that a correct image cannot be visually observed.
- the gas barrier film laminated on the transparent resin plate or the transparent resin plate is unstretched or non-oriented, the linearly polarized light is transmitted without being disturbed. Although the image is cut off at an angle perpendicular to the polarization axis of the polarized glasses, it is considered that no discoloration of the image is seen during other rotations.
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Abstract
Description
ここで、「実質的に延伸されてない」とは、それぞれの製造過程で意図的に延伸されてない、という意味である。
ここで、「無配向」とは、それぞれの製造過程で意図的に延伸操作等の配向処理を行なっていないことを意味する。また、「一軸配向している」とは、一軸延伸等の意図的な配向処理によって一方向にのみ配向方向を有している場合と、意図的な配向処理はしていないが、一方向にのみ配向方向を有している場合を包含する意味である。
本実施形態に係る表面保護パネル(「本表面保護パネル」と称する)は、液晶表示パネルを備えた液晶画像表示装置において、液晶表示パネルの外側、すなわち視認側に配置する表面保護パネルであって、透明合成樹脂板の片面側又は両面側に、ガスバリヤ層を有するガスバリヤ性透明樹脂フィルムを積層してなる構成を備えたものである。
なお、「視認側」とは、利用者が液晶画像表示装置の液晶画像を視認する場合における視認者側という意味である。
透明合成樹脂板は、主に液晶画像表示装置の破損防止の保護パネルの役割を果たす部材であり、その材質は、特に限定するものではない。例えばポリカーボネート系樹脂、PMMA(ポリメタクリル酸メチル)系樹脂、脂環式ポリオレフィン系樹脂、スチレン系樹脂、ポリ塩化ビニル系樹脂、フェノール系樹脂、メラミン系樹脂及びエポキシ系樹脂からなる群から選ばれる1種又は2種以上の樹脂を例示することができる。中でも、透明性、耐熱性、耐衝撃性の観点から、ポリカーボネート樹脂が好ましい。
よって、透明合成樹脂板は、例えば溶液状態或いはモノマー状態の原料樹脂を溶液キャスト法で成形した後、延伸しないか或いは一軸延伸して形成されたものが好ましい。また、溶融押出成形においても、金属ベルトや、金属薄層を持つ弾性ロール等で圧着することにより、光学異方性の小さな透明樹脂板を製膜することができる。
例えば溶融押出成形によってシート体(板体含む)を成形した場合、延伸処理していなくても一軸配向することがある。
ガスバリヤ性透明樹脂フィルムは、基材フィルムの一側又は両側にガスバリヤ層を積層してなる構成を備えたフィルムである。
この透明樹脂フィルムは、基材フィルムの一側又は両側にガスバリヤ層を積層してなる構成を備えていればよいから、他の層を積層してもよい。
よって、ガスバリヤ性透明樹脂フィルムは、例えば溶液状態或いはモノマー状態の原料樹脂を溶液キャスト法で成形した後、延伸しないか、或いは、一軸延伸して形成されたものが好ましい。また、溶融押出成形においても、金属ベルトや、金属薄層を持つ弾性ロール等で圧着することにより、光学異方性の小さな透明樹脂板を製膜することができる。
また、上述のように、例えば溶融押出成形によってフィルムを成形した場合、延伸処理していなくても一軸配向することがある。
また、合成樹脂板とガスバリヤ性透明樹脂フィルムは、両者が無配向又は一軸配向であればよい。例えば、合成樹脂板が無配向であって、ガスバリヤ性透明樹脂フィルムが一軸配向であってもよいし、また、合成樹脂板が一軸配向であって、ガスバリヤ性透明樹脂フィルムが無配向であってもよい。両者が一軸配向している場合には、両者の配向軸の向きを合わせることが必要である。
プライマー層(アンカーコート層)の形成法としては、基材フィルム層の表面にプライマーコート剤を塗布する方法を挙げることができる。
例えばプライマーコート剤としては、溶剤溶解性又は水溶性のポリエステル樹脂、イソシアネート樹脂、ウレタン樹脂、アクリル樹脂、ビニルアルコール樹脂、エチレンビニルアルコール樹脂、ビニル変性樹脂、エポキシ樹脂、オキサゾリン基含有樹脂、変性スチレン樹脂、変性シリコン樹脂及びアルキルチタネート等を単独、あるいは2種以上併せて使用することができる。
ガスバリヤ性透明樹脂フィルムは、透明合成樹脂板に直接積層してもよいが、接着剤層を介して積層してもよい。
この際、接着剤としては、例えばドライラミネート型接着剤、UV硬化型接着剤、エポキシ系接着剤、熱可塑性接着剤などを挙げることができる。中でも、透明で耐候性があり凝集力の高いアクリル系の接着剤が好ましい。
接着剤の全光線透過率(JIS K 73610-1)は85%以上であるのが好ましく、特に88%以上であるのが好ましい。また、そのヘーズ(JIS K 7136)は3%以下、特に1%以下であるのが好ましい。
本表面保護パネルは、透明合成樹脂板の片面側又は両面側に透明樹脂フィルムを積層してなる構成を備えていればよいから、これら以外の層を積層してもよい。
反射防止層、防汚層、ハードコート層を視認面側に配置することで、屋外での画像表示装置の視認性をより一層向上させることが可能である。
本表面保護パネルは、そのガスバリヤ層面側を、粘着材層を介して液晶表示パネルに密着させることにより、液晶画像表示装置を構成することができる。中でも、屋外で使用されるような液晶画像表示装置、例えば携帯電話機、携帯ゲーム機、携帯パソコン、モバイル端末、テレビ、タッチパネルなどの液晶表示パネルを備えた液晶画像表示装置をより好適に構成することができる。
ここで、ベースポリマーとしては、 (メタ)アクリル酸エステル系共重合体、特に(メタ)アクリル酸アルキルエステル系共重合体を用いるのが好ましい。
架橋モノマーとしては、アクリル系架橋モノマーを用いるのが好ましい。中でも、単官能(メタ)アクリレートよりは、2官能(メタ)アクリレート、3官能(メタ)アクリレート、4官能(メタ)アクリレートなどの多官能(メタ)アクリレート、若しくは、単官能~4官能(メタ)アクリレートの2種以上が混合してなる混合物などの多官能(メタ)アクリレートからなるモノマーを用いるのが好ましい。
架橋開始剤としては、光開始剤を用いるのが好ましく、開裂型の光開始剤、水素引抜型の光開始剤のいずれかを単独で使用してもよいし、また両者を併用してもよい。
一般的に「シート」とは、JISにおける定義上、薄く、一般にその厚さが長さと幅のわりには小さく平らな製品をいい、一般的に「フィルム」とは、長さ及び幅に比べて厚さが極めて小さく、最大厚さが任意に限定されている薄い平らな製品で、通常、ロールの形で供給されるものをいう(日本工業規格JISK6900)。例えば厚さに関して言えば、狭義では100μm以上のものをシートと称し、100μm未満のものをフィルムと称すことがある。しかし、シートとフィルムの境界は定かでなく、本発明において文言上両者を区別する必要がないので、本発明においては、「フィルム」と称する場合でも「シート」を含むものとし、「シート」と称する場合でも「フィルム」を含むものとする。
また、「粘着剤」と「接着剤」は、厳密に言えば両者の定義内容は異なるが、透明であればいずれを使用しても画像の見え方に差はないなどの観点から、本発明においては文言上両者を区別する必要がないので、「粘着剤」と称する場合でも「接着剤」を含むものとし、「接着剤」と称する場合でも「粘着剤」を含むものとする。
また、本発明において、「X以上」(Xは任意の数字)と表現した場合、特にことわらない限り、「好ましくはXより大きい」の意を包含し、「Y以下」(Yは任意の数字)と表現した場合、特にことわらない限り、「好ましくはYより小さい」の意を包含するものとする。
透明合成樹脂板として、厚さ2mm×巾300mm×長さ300mmの未延伸ポリカーボネート系樹脂製板(溶融押出成形、一軸配向、商品名「ステラS300」(三菱樹脂株式会社製、)を用いた。
また、ガスバリヤ性透明樹脂フィルムとして、厚さ80μmのトリアセチルセルロース(TAC)製未延伸フィルム(無配向)の表面に、酸化アルミニウムを真空蒸着させ、裏面にアクリル系接着剤(綜研化学(株)製SKダイン1882;硬化剤の添加割合は奨励配合)を塗布し、溶剤を揮発させた後、室温養生してなるフィルムを用いた。
また、防汚性反射防止フィルムとして、防汚性反射防止加工した厚さ80μmのトリアセチルセルロース(TAC)製未延伸フィルム(無配向)の表面に、アクリル系接着剤(綜研化学(株)製SKダイン1882;硬化剤の添加割合は奨励配合)を塗布し、溶剤を揮発させた後、室温養生してなるフィルム(商品名「リアルック♯8701UV-S」、日本油脂株式会社製)を用意した。
なお、表1の「透明フィルム基材」とは、ガスバリヤ性透明樹脂フィルムを示している。
透明合成樹脂板として、厚さ2mm×巾300mm×長さ300mmの未延伸ポリカーボネート系樹脂製板(溶融押出成形、一軸配向、商品名「ステラS300」(三菱樹脂株式会社製)を用いた。
また、ガスバリヤ性透明樹脂フィルムとして、ポリカーボネート樹脂原料(カリバー303-15、住友ダウ製)を溶融押出法により、金属キャストロールと金属膜を表面に配した弾性ロールでニップして、80μm厚の光学異方性の小さいシートを採取し、この表面に酸化アルミニウムを真空蒸着させ、裏面にアクリル系接着剤(綜研化学(株)製SKダイン1882;硬化剤の添加割合は奨励配合)を施した未延伸フィルム(無配向)を用いた。
透明合成樹脂板として、厚さ0.8mm×巾300mm×長さ300mmの未延伸ポリメチルメタアクリレート樹脂製板(キャスト法で成形したPMMA板(無配向)、商品名「MR100」三菱レーヨン株式会社製、リタデーション値<10nm)を用いた以外は、実施例1と同様にして、表面保護パネル(サンプル)を作製した。
特開2003-145658号公報に記載された実施例2に準じて、表面保護パネル(サンプル)を作製した。
また、ガスバリヤ性透明樹脂フィルムとして、片面に酸化アルミニウムを蒸着させた厚さ12μmの2軸延伸透明蒸着PETフィルム(商品名:ファインバリヤAT、(株)麗光製、延伸倍率3×3倍以上)を用いた。
次に、同じ大きさの厚さ3mmのフロートガラス板を、厚さ0.5mmの柔らかいアクリル系粘着シートで接合させて、表面保護パネル(サンプル)とした。
接合に用いた柔らかいアクリル系粘着シートは、アクリル酸エステル共重合体100重量部に対し、アセチルアセトン亜鉛塩:0.5重量部およびアセチルアセトンアルミ塩:0.7重量部を溶融攪拌した後、離型フィルム間にシート状に成形して得た。
特開2007-152847号公報に記載された実施例1に準じて、表面保護パネル(サンプル)を作製した。
上記実施例および比較例で作製した各表面保護パネル(サンプル)を、TFT型液晶表示装置(偏光板含む)の表示面に重ねて配置し、偏光めがね越しに視認した画像観察の結果を表1に示す。
この際、各表面保護パネル(サンプル)のガスバリヤ性フィルムの面を、TFT型液晶表示装置の表示面に、透明なUV硬化型接着剤を用いて積層した。
なお、実施例1及び2については、透明合成樹脂板の配向軸の向きが、TFT型液晶表示装置内の偏光板の配向軸の向きと合致するように、表面保護パネル(サンプル)を配置した。
そして、画像観察においては、液晶表示装置の表示面に配置した表面保護パネル(サンプル)を、表示面と平行となるように回転させながら、表示面を偏光めがね越しに目視し、画像変色の有無を観察した。
また、表1に示したリタデーション値は、平行ニコル回転法により測定した。
○:画像変色なし。
×:画像変色あり。
これに対し、透明樹脂板や、透明樹脂板に積層されたガスバリヤ性フィルムが、未延伸であるか、無配向である場合には、直線偏光の光が乱されることなく透過されるため、偏光めがねの偏光軸と直行する角度のとき画像が遮断されるが、それ以外の回転中には画像の変色は見られないものと考えられる。
Claims (9)
- 液晶表示パネルを備えた液晶画像表示装置において、液晶表示パネルの外側、すなわち視認側に配置する表面保護パネルであって、
透明合成樹脂板の片面側又は両面側に、ガスバリヤ層を有するガスバリヤ性透明樹脂フィルムを積層してなる構成を備え、前記透明合成樹脂板及び前記ガスバリヤ性透明樹脂フィルムのいずれもが実質的に延伸されてないことを特徴とする表面保護パネル。 - 液晶表示パネルを備えた液晶画像表示装置において、液晶表示パネルの外側、すなわち視認側に配置する表面保護パネルであって、
透明合成樹脂板の片面側又は両面側に、ガスバリヤ層を有するガスバリヤ性透明樹脂フィルムを積層してなる構成を備え、前記透明合成樹脂板及び前記ガスバリヤ性透明樹脂フィルムが、無配向または一軸配向していることを特徴とする表面保護パネル。 - 前記ガスバリヤ性透明樹脂フィルムは、リタデーション値が50nm以下であることを特徴とする請求項1または2記載の表面保護パネル。
- 前記透明合成樹脂板が、ポリカーボネート系樹脂、PMMA系樹脂、脂環式ポリオレフィン系樹脂、スチレン系樹脂、ポリ塩化ビニル系樹脂、フェノール系樹脂、メラミン系樹脂及びエポキシ系樹脂からなる群から選ばれる1種又は2種以上の樹脂からなるものであることを特徴とする請求項1~3の何れかに記載の表面保護パネル。
- 前記ガスバリヤ性透明樹脂フィルムの基材フィルムが、ポリカーボネート系樹脂、脂環式ポリオレフィン系樹脂、スチレン系樹脂、セルロース系樹脂、アクリル系樹脂、ポリ酢酸ビニル系樹脂、ポリビニルブチラール系樹脂及びナイロン系樹脂からなる群から選ばれる1種又は2種以上の樹脂からなるものであることを特徴とする請求項1~4の何れかに記載の表面保護パネル。
- 前記透明合成樹脂板と前記ガスバリヤ性透明樹脂フィルムとを、接着剤層を介して積層してなる構成を備えた請求項1~5の何れかに記載の表面保護パネル。
- 前記ガスバリヤ性透明樹脂フィルムのガスバリヤ層が、酸化ケイ素、酸化アルミニウム、酸化亜鉛、インジウムスズ酸化物、窒化ケイ素及びフッ化マグネシウムからなる群から選ばれる1種又は2種以上を含有することを特徴とする請求項1~6の何れかに記載の表面保護パネル。
- 前記透明合成樹脂板の一方の片面側にガスバリヤ性透明樹脂フィルムを積層し、かつ他方の片面側には、反射防止層、防汚層、ハードコート層のいずれか1種類以上を積層してなる構成を備えた請求項1~7の何れかに記載の表面保護パネル。
- 請求項1~8の何れかに記載の表面保護パネルのガスバリヤ層面側と、液晶表示パネルとを粘着材層を介して密着してなる構成を備えた液晶画像表示装置。
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US13/515,138 US9213194B2 (en) | 2009-12-10 | 2010-12-08 | Surface protection panel and liquid crystal image display device |
CN201080056007.5A CN102652276B (zh) | 2009-12-10 | 2010-12-08 | 表面保护面板及液晶图像显示装置 |
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US20120287388A1 (en) | 2012-11-15 |
EP2796921A1 (en) | 2014-10-29 |
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CN104157222A (zh) | 2014-11-19 |
US20150029450A1 (en) | 2015-01-29 |
US9335575B2 (en) | 2016-05-10 |
CN102652276B (zh) | 2015-04-01 |
US9213194B2 (en) | 2015-12-15 |
JPWO2011071075A1 (ja) | 2013-04-22 |
EP2511755A4 (en) | 2014-01-22 |
EP2511755A1 (en) | 2012-10-17 |
CN104157222B (zh) | 2018-11-06 |
KR20120091299A (ko) | 2012-08-17 |
TW201447432A (zh) | 2014-12-16 |
TW201131256A (en) | 2011-09-16 |
TWI541571B (zh) | 2016-07-11 |
JP5497789B2 (ja) | 2014-05-21 |
KR101369825B1 (ko) | 2014-03-05 |
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