WO2006098363A1 - 光学積層体 - Google Patents
光学積層体 Download PDFInfo
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- WO2006098363A1 WO2006098363A1 PCT/JP2006/305123 JP2006305123W WO2006098363A1 WO 2006098363 A1 WO2006098363 A1 WO 2006098363A1 JP 2006305123 W JP2006305123 W JP 2006305123W WO 2006098363 A1 WO2006098363 A1 WO 2006098363A1
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- WIPO (PCT)
- Prior art keywords
- layer
- resin
- hard coat
- composition
- refractive index
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Classifications
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
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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
-
- 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
- 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
- G02F1/133502—Antiglare, refractive index matching layers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
Definitions
- the present invention relates to an optical laminate that prevents interface reflection and interference fringes.
- Image display devices such as cathode ray tube display (CRT), plasma display (PDP), electoric luminescence display (ELD), or liquid crystal display (LCD) can be used to reflect external light or reflect images.
- CTR cathode ray tube display
- PDP plasma display
- ELD electoric luminescence display
- LCD liquid crystal display
- an antireflection laminate is generally provided on the outermost surface of the image display device for the purpose of reducing image reflection or reflectance by using the principle of light scattering or optical interference.
- the inventors of the present invention have a substantially uniform interface between the light transmissive substrate and the hard coat layer by interposing an optical adjustment layer between the light transmissive substrate and the hard coat layer.
- the knowledge that an optical layered product that does not exist is obtained. Therefore, the present invention effectively prevents the generation of interface reflection and interference fringes by substantially eliminating the interface between the light-transmitting substrate and the hard coat layer, and improves visibility and mechanical strength.
- the purpose is to provide an optical laminate.
- optical laminate according to the present invention is
- a light-transmitting substrate, and an optical adjustment layer and a hard coat layer on the light-transmitting substrate are provided in these II,
- the optical adjustment layer includes a component of the light-transmitting substrate and a component of the hard coat layer.
- FIG. 1 is a laser micrograph of a cross section of an optical laminate according to the present invention.
- FIG. 2 is a laser micrograph of a cross section of an optical laminate according to a comparative example.
- the optical adjustment layer is used for imparting desired optical properties to the optical laminate, and the optical properties of the optical laminate, particularly the total light transmittance, reflectance, haze value, etc., are set to desired values.
- the optical adjustment layer is preferably used for eliminating the interface between the light-transmitting substrate and the hard coat layer.
- the main function of the optical adjustment layer is to eliminate the interface between the light-transmitting substrate and the hard coat layer, and this includes those in which the interface does not substantially exist. It is.
- “there is no (substantially) interface” means that the two layer surfaces overlap each other. This includes cases where the interface does not exist and the case where it is judged that the interface does not exist on both sides in terms of the refractive index.
- the interface does not exist (substantially) for example, the cross section of the optical laminate is observed with a laser microscope, and the cross section of the laminate where the interference fringes are visually observed is the interface. This can be done by measuring the absence of an interface on the cross section of the laminate where interference fringes are not visible.
- Laser microscopes allow non-destructive cross-sectional observation of objects with different refractive indexes, so the measurement results show that there are no major differences in the refractive index, no difference between the materials, and no interface exists. Occurs. Based on this, it can be judged that there is no interface between the base material and the hard coat layer from the viewpoint of the refractive index.
- the optical adjustment layer is formed of a material containing a component of a light-transmitting substrate and a component of a hard coat layer. Therefore, these components may be the same as those of the light-transmitting substrate and the hard coat layer described later.
- the blending ratio of the component of the light-transmitting substrate constituting the optical adjustment layer and the component of the hard coat layer may be adjusted so as to impart desired optical characteristics to the optical laminate. However, it is preferably 30:70, more preferably 50:50.
- the solvent used to form the optical adjustment layer is a solvent that can dissolve and / or wet the components of the light-transmitting substrate and the components of the hard coat layer (in the present invention, "penetration" It is sometimes referred to as a “soluble solvent”.
- solvents include methanolol, ethano monore, isopropino enore cornole, butanol, isobutino leneno eno cornole, methinoreglycolenole, methinoreglycolenoreacetate, methinorecello enolev, ethino.
- Alcohols such as recerosonolev and butinoreserosonole; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, diacetone alcohol; methyl formate, methyl acetate, ethyl acetate, ethyl acetate, Esters such as butyl acetate; nitrogen-containing compounds such as nitromethane, N-methylpyrrolidone, N, N-dimethylformamide; ethers such as diisopropyl ether, tetrahydrofuran, dioxane, dioxolane; methylene chloride, chloroformol, trichloroethane, Halogenated hydrocarbons such as Torakuroruetan; dimethyl sulfoxide, and other objects, such as carbonate pro pyrene; or mixtures thereof.
- ketones such as acetone, methyl ethyl ketone,
- More preferable solvents include methyl acetate, ethyl acetate, butyl acetate, methyl ethyl ketone and the like.
- Specific examples of preferable osmotic solvents of the present invention include ketones; acetone, methyl ethyl ketone, cyclohexanone, methyl isobutyl ketone, diacetone alcohol, esters; methyl formate, methyl acetate, ethyl acetate, and butyl acetate.
- alcohols such as methanol, ethanol, isopropyl alcohol, butanol, and isobutyl alcohol
- aromatic hydrocarbons such as toluene, xylene, and styrene
- the optical adjustment layer may contain an antistatic agent.
- the antistatic agent include quaternary ammonium salts, pyridinium salts, various cationic compounds having a cationic group such as primary to tertiary amino groups, sulfonate groups, sulfate ester bases, and phosphate esters.
- anionic compounds having anionic groups such as phosphonic acid bases, amphoteric compounds such as amino acids and aminoamino sulfates, nonionic compounds such as amino ano-reconoles, glycerin and polyethylene glycol, tin and Examples include organometallic compounds such as titanium alkoxides and metal chelate compounds such as acetyl cetate salts thereof, and compounds obtained by increasing the molecular weight of the compounds listed above.
- an organic metal such as a coupling agent having a tertiary amino group, a quaternary ammonium group, or a metal chelate moiety and capable of being polymerized by ionizing radiation or having a functional group.
- Polymerizable compounds such as compounds can also be used as antistatic agents.
- Organic conductive polymers such as polythiophene, polyaniline, polypyrrole and polyacetylene can also be used.
- conductive ultrafine particles may also be mentioned.
- Specific examples of conductive fine particles include those made of metal oxides. wear.
- ZnO reffractive index 1.90, below, the values in Katsuko represent the refractive index. CeO (1. 95), Sb 2 O (1.71), SnO (1. 997), abbreviated IT ⁇
- the conductive fine particles are those having a size of 1 micron or less, that is, a so-called submicron size, and preferably mean particles having an average particle diameter of 0.1 nm to 0.1 mm.
- the light-transmitting substrate preferably has smoothness and heat resistance and is excellent in mechanical strength.
- the material forming the light-transmitting substrate include polyester (polyethylene terephthalate, polyethylene naphthalate), senorelose triacetate, senorelose diacetate, cellulose acetate butyrate, polyester, polyamide, polyimide, polyether sulfone.
- thermoplastic resins such as polysulfone, polypropylene, polymethylpentene, polyvinyl chloride, polyvinyl acetal, polyether ketone, polymethyl methacrylate, polycarbonate, and polyurethane, preferably polyester (polyethylene terephthalate, polyethylene Naphthalate) and cellulose triacetate.
- amorphous olefin polymer (Cyclo-Olefin-Polymer: COP) film with an alicyclic structure, which includes norbornene polymers, monocyclic cyclic olefin polymers, and cyclic conjugates.
- ZEONEX ZEONOR Newcastleene resin manufactured by Nippon Zeon Co., Ltd., Sumitomo Bakelite Co., Ltd., Sumilite FS-1700, JSR Co., Arton (modified norbornene resin) , Mitsui Chemicals, Apelle (cyclic olefin copolymer), Ticona Topas (cyclic olefin copolymer), Hitachi Chemical Optretz OZ-1000 series (alicyclic acrylic resin), etc.
- FV series low birefringence, low photoelastic modulus film manufactured by Asahi Kasei Chemicals is also preferable as an alternative base material for triacetyl cellulose.
- the thickness of the light-transmitting substrate is 20 ⁇ m or more and 300 ⁇ m or less, preferably the upper limit is 200 ⁇ m or less, and the lower limit is 30 ⁇ or more. If the light-transmitting substrate is a plate, these thicknesses The thickness may exceed the thickness.
- the light-transmitting substrate is called an anchor agent or primer in addition to physical treatment such as corona discharge treatment and oxidation treatment in order to improve adhesion when forming an optical property layer on the substrate. You can apply paint in advance.
- Hard coat layer means a layer having a hardness of “H” or higher in a pencil hardness test specified in JIS5600_5_4 (1999).
- the film thickness (at the time of curing) of the hard coat layer is 1 ⁇ m or more and 20 ⁇ m or less, preferably the lower limit is 2.5 / im or more and the upper limit is 12 ⁇ or less.
- the hard coat layer according to the present invention may be formed of a resin and other optional components.
- curable resin precursors such as monomers, oligomers and prepolymers are collectively referred to as “resins” unless otherwise specified.
- the resin is preferably transparent, and specific examples thereof include ionizing radiation curable resins, ionizing radiation curable resins and solvent-drying resins that are cured by ultraviolet rays or electron beams (solid content during coating).
- the solvent added to the resin is dried, and a mixture with a resin that forms a film) or a thermosetting resin is exemplified, and an ionizing radiation curable resin is preferably used.
- the ionizing radiation curable resin include those having an acrylate functional group such as a polyester resin, polyether resin, acrylic resin, epoxy resin, urethane resin, alkyd resin having a relatively low molecular weight.
- Oligomers such as spiroacetal resins, polybutadiene resins, polythiolpolyene resins, polyfunctional compounds such as polyhydric alcohols (meth) acrylates or prepolymers, and reactive diluents.
- ethyl (meta ) Monofunctional monomers such as acrylate, ethylhexyl (meth) acrylate, styrene, methyl styrene, ⁇ ⁇ -butylpyrrolidone and polyfunctional monomers such as polymethylolpropane tri (meth) acrylate, hexanediol (meta ) Atarylate, tripropylene glycol Di (meth) acrylate, diethylene glycol di (meth) acrylate, pentaerythritol nortri (meth) acrylate, dipentaerythritol hex (meth) acrylate, 1,6-hexanediol di (meth) acrylate Rate, neopentyl glycol di (meth) Examples thereof include attalylate, trimethylolpropane triatalylate, pentaerythritol triatalylate, pentaerythrito
- these acrylates may be modified with a part of the molecular skeleton, modified with ethylene oxide, propylene oxide, force prolatatone, isocyanuric acid, alkyl, cyclic alkyl, aromatic, bisphenol, etc. Can also be used.
- an ionizing radiation curable resin is used as an ultraviolet curable resin
- a photopolymerization initiator include acetophenone, benzophenone, Michlerbenzoinolebenzoate, amyoxime esterenole, and thixanthone.
- the photosensitizers preferably used in combination include n-butylamine, triethylamine, poly-n-butylphosphine, and the like.
- a photopolymerization initiator or a photopolymerization accelerator can be added.
- the photopolymerization initiator in the case of a resin system having a radically polymerizable unsaturated group, acetophenone, benzophenone, thixanthone, benzoin, benzoin methyl ether or the like is used alone or in combination.
- an aromatic diazonium salt, an aromatic sulfonium salt, an aromatic odonium salt, a metathelone compound, a benzoin sulfonic acid ester, etc. alone or as a photopolymerization initiator Used as The addition amount of the photopolymerization initiator is 0.:! To 10 parts by weight with respect to 100 parts by weight of the ionizing radiation curable composition.
- the solvent-drying resin used by being mixed with the ionizing radiation curable resin mainly includes a thermoplastic resin.
- a thermoplastic resin those generally exemplified are used.
- solvent-drying resins include, for example, styrene resins, (meth) acrylic resins, butyl acetate resins, butyl ether resins, halogen-containing resins, alicyclic olefin resins, polycarbonate resins, and polyester resins.
- the resin a resin that is amorphous and is soluble in an organic solvent (especially a common solvent capable of dissolving a plurality of polymers and curable compounds) is usually used.
- an organic solvent especially a common solvent capable of dissolving a plurality of polymers and curable compounds
- moldable or film-forming, transparent or highly weatherable resins such as styrene resins, (meth) acrylic resins, alicyclic olefin resins, polyester resins, cellulose derivatives (cellulose esters) Etc.
- transparent or highly weatherable resins such as styrene resins, (meth) acrylic resins, alicyclic olefin resins, polyester resins, cellulose derivatives (cellulose esters) Etc.
- thermoplastic resin when the material of the transparent substrate is a cellulose resin such as TAC, preferred specific examples of the thermoplastic resin include cellulose resins such as nitrocellulose, acetyl cellulose, cellulose acetate Examples include pionate and ethyl hydroxyethyl cellulose.
- thermosetting resin examples include phenol resin, urea resin, diallyl phthalate resin, melamine resin, guanamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, aminoalkyd resin, melamine.
- examples include urea co-condensation resins, silicone resins, and polysiloxane resins.
- a curing agent such as a cross-linking agent and a polymerization initiator, a polymerization accelerator, a solvent, a viscosity modifier and the like as necessary.
- a photopolymerization initiator can be used, and specific examples thereof include 1-hydroxy monocyclohexyl monophenyl monoketone.
- This compound is commercially available, for example, trade name “Irgacure 184” (manufactured by Ciba Specialty Chemicals).
- the hard coat layer preferably contains an antistatic agent.
- an antiglare agent may be added.
- Anti-lightning agent (lightning agent)
- the antistatic agent include quaternary ammonium salts, pyridinium salts, various cationic compounds having a cationic group such as first to third amino groups, sulfonate groups, sulfate esters, and phosphates.
- Anionic compounds having anionic groups such as ester bases and phosphonic acid bases, amphoteric compounds such as amino acids and aminoamino sulfates, amino alcohols
- nonionic compounds such as glycerin, glycerin, and polyethylene glycol, organometallic compounds such as tin and titanium alkoxides, and metal chelate compounds such as acetylacetonate salts thereof.
- Examples include compounds obtained by increasing the molecular weight of the above-described compounds.
- organic compounds such as coupling agents having a tertiary amino group, a quaternary ammonium group, or a monomer or oligomer that has a metal chelate moiety and can be polymerized by ionizing radiation, or a functional group.
- Polymerizable compounds such as metal compounds can also be used as antistatic agents.
- the antistatic agent include conductive polymers. Specific examples thereof include aliphatic conjugated polyacetylene, aromatic conjugated poly (paraphenylene), heterocyclic conjugated polypyrrole, polythiophene, and the like. Other examples include heteroatom-conjugated polyaniline and mixed conjugated poly (phenylene vinylene).
- double-chain conjugated systems which are conjugated systems with multiple conjugated chains in the molecule
- examples thereof include a conductive composite that is a polymer obtained by grafting or block-copolymerizing the aforementioned conjugated polymer chain to a saturated polymer.
- conductive ultrafine particles are exemplified, and specific examples thereof include those made of a metal oxide.
- metal oxides include ZnO (refractive index 1.90, below, the numerical value in the parenthesis represents the refractive index), CeO (1.95), Sb 2 O (1.71), Sn Yes (1. 997)
- IT ⁇ Indium tin oxide (1.95), In ⁇ (2.00), A1 ⁇ , often abbreviated as IT ⁇
- the fine particles refer to particles having a size of 1 micron or less and a so-called submicron size, and preferably have an average particle size of 0.1 nm to 0.1 ⁇ m.
- the addition ratio of the resin and antistatic agent contained in the hard coat layer is 5 or more and 25 or less, preferably the upper limit is 20 or less and the lower limit is 5 or more. It is preferable to adjust the addition amount to the above numerical range since good antistatic performance and optical performance can be obtained.
- the antiglare agent examples include fine particles, and the shape thereof may be a spherical shape or an elliptical shape, preferably a spherical shape.
- Fine particles are inorganic and organic. Is mentioned. The fine particles exhibit antiglare properties, and preferably are transparent. Specific examples of the fine particles include silica beads for inorganic materials and plastic beads for organic materials. Specific examples of plastic beads include styrene beads (refractive index 1.60), melamine beads (refractive index 1.57), acrylic beads (refractive index 1.49), acrylic-styrene beads (refractive index 1.54). , Polycarbonate beads, polyethylene beads and the like. The amount of fine particles added is 2 to 30 parts by weight, preferably about 10 to 25 parts by weight, per 100 parts by weight of the transparent resin composition.
- the antiglare agent When the antiglare agent is added to the composition for the hard coat layer, it is preferable to add an antisettling agent. This is because by adding an anti-settling agent, precipitation of the resin beads can be suppressed and the resin beads can be uniformly dispersed in the solvent.
- the anti-settling agent include silica beads having a particle size of 0.5 ⁇ m or less, preferably about 0.:! To about 25 ⁇ 25 ⁇ .
- the hard coat layer can be formed by preparing and coating a composition for a hard coat layer in which a solvent is further mixed with the above components.
- a solvent include alcohols such as isopropylene alcohol, methanol and ethanol; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone and diacetone alcohol; methyl acetate, ethyl acetate and butyl acetate.
- alcohols such as isopropylene alcohol, methanol and ethanol
- ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone and diacetone alcohol
- methyl acetate, ethyl acetate and butyl acetate Such as esters; halogenated hydrocarbons; aromatic hydrocarbons such as toluene and xylene; or a mixture thereof, preferably ketones and esters.
- a preferred solvent of the present invention can be selected and used according to the type and solubility of the polymer and the curable resin precursor in the hard coat composition, and at least a solid content (a plurality of polymers and a curing agent) can be used.
- the solvent is preferably a solvent capable of uniformly dissolving the conductive resin precursor, reaction initiator, and other additives. Examples of such solvents include ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, etc.), ethers (dioxan, tetrahydrofuran, etc.), aliphatic hydrocarbons (hexane, etc.), alicyclic rings.
- Hydrocarbons such as cyclohexane
- aromatic hydrocarbons such as toluene and xylene
- halogenated carbons such as dichloromethane and dichloroethane
- esters such as methyl acetate, ethyl acetate, and butylacetate
- water Alcohols (ethanol, isopropanol, butanol, cyclohexano Etc.), cellosolves (such as methyl and solvate), cellosolvates, sulfoxides (such as dimethyl sulfoxide), amides (such as dimethylformamide and dimethylacetamide), etc.
- it may be a mixed solvent of ketones and esters.
- the hard coat layer may be formed by applying a composition obtained by mixing the above-described resin, solvent, and optional components to a light-transmitting substrate.
- a fluorine-based or silicone-based leveling agent it is preferable to add to the liquid composition.
- a liquid composition to which a leveling agent is added improves the coating surface and makes it possible to impart antifouling and scratch resistance effects. Further, an antifouling agent such as fluorine or silicone may be added.
- Examples of methods for applying the composition include application methods such as a roll coating method, a Miyaba coat method, and a gravure coating method. After application of the liquid composition, drying and UV curing are performed.
- Specific examples of the ultraviolet light source include ultra-high pressure mercury lamp, high pressure mercury lamp, low pressure mercury lamp, carbon arc lamp, black light fluorescent lamp, and metal halide lamp light source.
- As the wavelength of the ultraviolet light a wavelength range of 190 to 380 nm can be used.
- the electron beam source include various electron beam accelerators such as a cockcroft ⁇ norret type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type.
- electron beam accelerators such as a cockcroft ⁇ norret type, a bandegraft type, a resonant transformer type, an insulated core transformer type, a linear type, a dynamitron type, and a high frequency type.
- an optical laminate obtained by forming an antistatic layer, a low refractive index layer, another layer, or two or more of these layers in the outermost surface, the outermost surface, or each layer of the optical laminate is preferable.
- the low refractive index layer is composed of a resin containing silica or magnesium fluoride, a fluorine resin that is a low refractive index resin, or a fluorine resin containing silica or magnesium fluoride, and a refractive index of 1.46 or less. It is also composed of a thin film of about 30 nm to lzm, or a thin film of silica or magnesium fluoride by chemical vapor deposition or physical vapor deposition. Can.
- the resin other than the fluororesin may be the same as the resin used for forming the antistatic layer.
- the low refractive index layer is preferably formed on the outermost surface of the optical laminate.
- the low refractive index layer can be composed of a silicone-containing vinylidene fluoride copolymer.
- this silicone-containing vinylidene fluoride copolymer has 30 to 90% vinylidene fluoride and 5 to 50% hexafluoropropylene (including percentages below, all percentages are based on mass).
- 150 parts of a resin composition, and using this resin composition a thin film having a film thickness of 200 nm or less and a refractive index less than 1.60 (preferably 1.46 or less) ) Low refractive index layer.
- the above-mentioned silicone-containing vinylidene fluoride copolymer constituting the low refractive index layer has a proportion power of each component in the monomer composition of 30 to 90%, preferably 40 to 80%, particularly preferably Is 40 to 70%, and hexafluoropropylene is 5 to 50%, preferably 10 to 50%, particularly preferably 15 to 45%.
- This monomer composition may further contain 0 to 40%, preferably 0 to 35%, particularly preferably 10 to 30% of tetrafluoroethylene.
- the monomer composition described above contains, for example, 20% or less, preferably 10% of other copolymer components, as long as the intended purpose and effect of the silicone-containing vinylidene fluoride copolymer are not impaired.
- specific examples of such other copolymerization components that may be contained in the following ranges include fluoroethylene, trifluoroethylene, chloroethylene, 1,2-dichloro _1, 2-difluoroethylene, 2_bromo-1,3,3,3_trifluoroethylene, 3_bromo_3,3-difluoropropylene, 3,3,3_trifluoropropylene, 1, 1 , 2_Trichrome mouth_3,3,3_trifluoropropylene, trifluoromethyl methacrylate and other polymerizable monomers having fluorine atoms.
- the fluorine-containing copolymer obtained from the monomer composition as described above needs to have a fluorine-containing ratio of 60 to 70%, and a preferable fluorine-containing ratio is 62 to 70%, particularly preferably. Is 64 to 68%.
- the fluorine content is within this specific range
- the fluorine-containing polymer has good solubility in a solvent, and by containing such a fluorine-containing polymer as a component, excellent adhesion to various substrates. It has a high transparency and low refractive index, and has a sufficiently excellent mechanical strength, so that the mechanical properties such as scratch resistance of the surface on which the thin film is formed are sufficiently high. It is very suitable.
- the fluorine-containing copolymer preferably has a molecular weight of 5,000 to 200,000, in particular, 10,000 to 100,000 in terms of polystyrene-reduced number average molecular weight.
- the fluorine-containing copolymer preferably has a refractive index of 1.45 or less, particularly 1.42 or less, more preferably 1.40 or less. When a fluorine-containing copolymer having a refractive index exceeding 1.45 is used, the thin film formed from the resulting fluorine-based paint may have a small antireflection effect.
- fluorine-containing monomer unit examples include, for example, fluoroolefins (for example, fluoroethylene, vinylidene fluoride, tetrafluoroethylene, hexafluoroethylene, hexafluoropropylene, perfluoro 2, 2 —Dimethyl-1,3-dioxole, etc.), (meth) acrylic acid partial or fully fluorinated alkyl ester derivatives (eg, Biscoat 6FM (Osaka Organic Chemical), M—2020 (Daikin), etc.), complete Or force including partially fluorinated butyl ethers, preferably perfluoroolefins, and particularly preferably hexafluoropropylene from the viewpoint of refractive index, solubility, transparency, availability, etc. .
- fluoroolefins for example, fluoroethylene, vinylidene fluoride, tetrafluoroethylene, hexafluoroethylene, hexafluoro
- structural units for imparting curing reactivity structural units obtained by polymerization of monomers having self-curing functional groups, such as glycidyl (meth) acrylate and glycidyl vinyl ether, which have a self-curing functional group, can be obtained.
- monomers having self-curing functional groups such as glycidyl (meth) acrylate and glycidyl vinyl ether, which have a self-curing functional group, can be obtained.
- monomers containing fluorine atoms are suitably copolymerized from the viewpoint of solubility in a solvent, film transparency, and the like. You can also.
- the monomer units that can be used in combination are not particularly limited, for example, olefins (ethylene, propylene, isoprene, butyl chloride, vinylidene chloride, etc.), acrylic esters (methyl acrylate, methyl acrylate, ethyl acrylate, acrylic acid 2) —Ethylhexyl), methacrylic acid esters (methyl methacrylate, ethyl methacrylate, butyl methacrylate, ethylene glycol dimethacrylate), styrene derivatives (styrene, divinylbenzene, vinyl tolylene, ⁇ -methylstyrene, etc.), Vinyl ethers (methyl vinyl ether, ethyl vinyl ether, cyclohexyl vinyl ether, etc.), vinyl esters (butyl acetate, butyl propionate, vinyl cinnamate, etc.), attalinoleamides (N-tertbutylacrylamide, N
- the above-mentioned positive mer may be used in combination with a curing agent as appropriate. good.
- a curing agent when the curing reactive group of the polymer is a group such as a hydroxyl group or a carboxyl group that does not have a curing reactivity alone, it is essential to use a curing agent in combination.
- the curing agent may include polyisocyanate, amino blast, polybasic acid or anhydride thereof.
- the curing reactive group is a self-curing reactive group, it is not particularly necessary to add a curing agent.
- a fluorine-containing copolymer particularly useful for the low refractive index agent is a random copolymer of perfluororefin and a Bsseltels or a bullester.
- it preferably has a group capable of undergoing a cross-linking reaction alone [radical reactive group such as (meth) atalyloyl group, ring-opening polymerizable group such as epoxy group or oxetanyl group].
- These cross-linking reactive group-containing polymer units preferably occupy 5 mol% or more and 70 mol% or less of the total polymer units of the polymer, and particularly preferably 30 mol% or more and 60 mol% or less.
- a polysiloxane structure is introduced into the fluorine-containing polymer for the purpose of imparting antifouling properties.
- the method for introducing the polysiloxane structure is not limited.
- a polysiloxane can be prepared using a silicone macroazo initiator.
- a method of introducing a sunblock copolymer component or a method of introducing a polysiloxane graft copolymer component using a silicone macromer as described in JP-A-2-251555 and JP-A-2-308806 is preferred.
- the polysiloxane component is preferably 0.5% by mass or more and 10% by mass or less in the polymer, particularly preferably 1% by mass or more and 5% by mass or less.
- the low refractive index layer can also be composed of a thin film having a SiO force.
- Low refractive index layer It may be formed by a method of forming a gel film.
- MgF thin film and other materials can be used.
- organosiloxane As a source gas and no other inorganic evaporation source is present, and it is preferable to keep the deposition target as low as possible. .
- a preferred method for the low refractive index layer of the present invention is a method of preparing a composition for a low refractive index layer and coating it.
- the composition for a low refractive index layer may be formed of fine particles, a resin, and an optional component.
- the low refractive index layer may be a single layer or a plurality of layers.
- the fine particles may be either inorganic or organic, for example, those made of metal, metal oxide, or plastic, and preferably silicon oxide (silica) fine particles.
- the silica fine particles can impart a desired refractive index while suppressing an increase in the refractive index of the binder (binder).
- Silica fine particles may be crystalline, sol-like, or gel-like.
- commercially available products can be used.
- Aerosil manufactured by Dedasa
- colloidal silica manufactured by Nissan Chemical Industries, Ltd.
- Fine particles having voids makes it possible to lower the refractive index while maintaining the layer strength of the low refractive index layer.
- the term “fine particles having voids” means a structure in which fine particles are filled with gas and / or a porous structure containing gas, and the gas in the fine particles is compared with the original refractive index of the fine particles. This means fine particles whose refractive index decreases in inverse proportion to the occupation ratio.
- the present invention also includes fine particles capable of forming a nanoporous structure at least inside and / or on the surface depending on the form, structure, aggregation state, and dispersion state of the fine particles inside the coating film. .
- the inorganic fine particles having voids preferably include silica fine particles prepared by using the technique disclosed in JP-A-2001-233611. Since silica fine particles having voids are easy to manufacture and have high hardness, when a low refractive index layer is formed by mixing with a binder, the layer strength is improved and the refractive index is 1.20 to: 1 It is possible to prepare in the range of about 45.
- organic fine particles having voids hollow polymer fine particles prepared by using the technique disclosed in JP-A-2002-80503 are preferably exemplified.
- a fine particle capable of forming a nanoporous structure inside and / or at least part of the surface of the coating film in addition to the above-mentioned silica fine particle, it is produced for the purpose of increasing the specific surface area, and is a packing column.
- dispersion materials or agglomerates of hollow particulates intended to be incorporated into porous materials used for catalyst fixation, porous fine particles used for catalyst fixation, or heat insulating materials or low dielectric materials. can be mentioned.
- an aggregate of porous silica fine particles from the product names Nipsil and Nipgel manufactured by Nippon Silica Kogyo Co., Ltd., and silica fine particles manufactured by Nissan Chemical Industries, Ltd. are linked in a chain. From the colloidal silica UP series (trade name) having the above structure, those within the preferred particle diameter range of the present invention can be used.
- the average particle size of the fine particles is 5 nm or more and 300 nm or less, preferably the lower limit is 8 nm or more and the upper limit is lOOnm or less, more preferably the lower limit is lOnm or more and the upper limit is 80 nm or less.
- the average particle diameter of the fine particles is within this range, excellent transparency can be imparted to the low refractive index layer.
- the fine particles are preferably hydrophobized.
- the microparticles to be hydrophobized may themselves be hydrophobic, non-hydrophobic, or both of these amphoteric. Hydrophobization may be further performed to the entire surface or internal structure of the fine particles. Hydrophobic treatment of fine particles includes 1) hydrophobic treatment with low molecular weight organic compounds, 2) surface coating hydrophobization treatment with polymer compounds, 3) hydrophobization treatment with coupling agents, and 4) grafting of hydrophobic polymers. The hydrophobizing method by doing is mentioned.
- the resin includes a monomer having a functional group that is cured by three or more ionizing radiations in one molecule.
- the monomer used in the present invention has a functional group that is cured by ionizing radiation (hereinafter, referred to as “ionizing radiation-curable group” as appropriate), and a functional group that is cured by heat (hereinafter, “thermosetting group”). Called as appropriate).
- ionizing radiation-curable group a functional group that is cured by heat
- thermosetting group a functional group that is cured by heat
- the "ionizing radiation curable group" possessed by this monomer is a functional group capable of curing the coating film by proceeding with a large molecular weight reaction such as polymerization or crosslinking upon irradiation with ionizing radiation.
- Polymerization reaction such as photoradical polymerization, photopower thione polymerization, and photoanion polymerization, or those in which the reaction proceeds by a reaction mode such as addition polymerization or condensation polymerization that proceeds through photodimerization.
- an ethylenically unsaturated bond group such as an acryl group, a bur group, or a allyl group is directly applied by irradiation with ionizing radiation such as ultraviolet rays or an electron beam, or indirectly by the action of an initiator. It is preferable because it causes a radical photopolymerization reaction and is relatively easy to handle including a photocuring step.
- the "thermosetting group" which may be contained in the monomer component is cured by heating to cause a large molecular weight reaction such as polymerization or crosslinking between the same functional group or another functional group.
- groups include alkoxy groups, hydroxyl groups, carboxynole groups, amino groups, epoxy groups, hydrogen bond forming groups, and the like.
- the hydrogen bond forming group is a fine particle when the fine particle is an inorganic ultrafine particle. It is also preferable because it has excellent affinity with hydroxyl groups present on the surface and improves the dispersibility of the inorganic ultrafine particles and aggregates thereof in the binder.
- the hydrogen bond-forming groups particularly hydroxyl groups are easy to introduce into the binder component, and form covalent bonds with hydroxyl groups present on the surface of fine particles with inorganic voids due to the storage stability of the coating composition and heat curing.
- the fine particles having voids are particularly preferred because they act as a crosslinking agent and can further improve the coating strength.
- the refractive index of the monomer component is preferably 1.65 or less.
- binder of the coating composition used for forming the low refractive index layer of the antireflection laminate according to the present invention include a monomer component having two or more ionizing radiation-curable groups in one molecule. This is preferable because it improves the crosslink density of the coating film and improves the film strength or hardness.
- a polymer containing a fluorine atom and having a number average molecular weight of 20,000 or more and cured by ionizing radiation, and a fluorine atom containing a functional group curable by two or more ionizing radiations in one molecule and Combinations with / and non-containing monomers are preferably used.
- the composition by this combination is a monomer containing an ionizing radiation curable fluorine atom and / or a binder for imparting film forming property (film forming ability) and a low refractive index to the low refractive index composition. It comprises a polymer.
- Monomers and Z or oligomers containing and / or not containing fluorine atoms in the molecule have the effect of increasing the crosslinking density of the coating film, and are components having high fluidity due to their low molecular weight. There is an effect of improving workability. Since the fluorine atom-containing polymer has a sufficiently large molecular weight, the film-forming property is high compared to monomers and Z or oligomers containing and / or not containing fluorine atoms. In combination with the fluorine atom-containing polymer and the fluorine atom-containing and Z-containing monomers and / or oligomers, the fluidity is improved, the suitability as a coating liquid is improved, and the crosslinking density is also increased. The hardness or strength of the coating film can be improved.
- fluorine atom-containing monomer examples include fluoroolefins (for example, fluoroethylene, vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene). , Perfluorobutadiene, perfluoro-2,2-dimethyl-1,3-dioxol, etc.), acrylic or methacrylic acid partial and fully fluorinated alkyl, alkenyl, aryl ester, fully or partially fluorinated Examples include butyl ethers, fully or partially fluorinated butyl esters, and fully or partially fluorinated vinyl ketones.
- fluoroolefins for example, fluoroethylene, vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene.
- Perfluorobutadiene perfluoro-2,2-dimethyl-1,3-dioxol, etc.
- fluorine atom-free monomer examples include diacetylates such as pentaerythritol tritalylate, ethylene glycol ditalylate, pentaerythritol diacrylate monostearate; trimethylolpropane tritalylate, penta Tri (meth) acrylates such as erythritol triacrylate, polyfunctional (meth) acrylates such as pentaerythritol tetra acrylate derivatives, dipenta erythritol penta acrylate, or oligomers obtained by polymerizing these radical polymerizable monomers Can be mentioned. These fluorine-free monomers and / or oligomers may be used in combination of two or more.
- the low refractive index layer comprises a hydrophobized fine particle and a binder, and if necessary, further contains a fluorine compound and / or a key compound, and a fluorine atom in the molecule. And a binder other than the ionizing radiation curable resin composition. Furthermore, the low refractive index layer-forming coating solution contains a solvent, a polymerization initiator, a curing agent, a rustic agent, an ultraviolet blocking agent, an ultraviolet absorber, a surface conditioner (leveling agent), or other components. May be included.
- the antistatic layer is formed of an antistatic layer composition comprising an antistatic agent, a solvent, and a resin.
- the antistatic agent and the solvent may be the same as described in the hard coat layer.
- the thickness of the antistatic layer is preferably about lOnm or more and lxm or less.
- the addition ratio of the resin forming the antistatic layer and the antistatic agent is preferably 300 or more and 500 or less. By making it within this range, the antistatic layer itself can be provided with good antistatic performance of 10 7 ⁇ / port or less, and coating can be applied when forming the antistatic layer. It is possible to improve the aptitude.
- thermoplastic resin a thermoplastic resin, a thermosetting resin, an ionizing radiation curable resin, or an ionizing radiation curable compound (including an organic reactive silicon compound) can be used.
- a thermoplastic resin can also be used, but it is more preferable to use a thermosetting resin, more preferably an ionizing radiation curable composition containing an ionizing radiation curable resin or an ionizing radiation curable compound. It is.
- the ionizing radiation curable composition is a composition in which prepolymers, oligomers, and / or monomers having polymerizable unsaturated bonds or epoxy groups in the molecule are appropriately mixed.
- the ionizing radiation refers to an electromagnetic wave or a charged particle beam having an energy quantum capable of polymerizing or crosslinking molecules, and usually an ultraviolet ray or an electron beam is used.
- Examples of prepolymers and oligomers in the ionizing radiation curable composition include unsaturated polyesters such as a condensation product of unsaturated dicarboxylic acid and polyhydric alcohol, polyester metatalylate, polyether metatalylate, polyol Examples include metatarylates such as metatalylate and melamine metatalylate, polyester acrylate, epoxy acrylate, urethane acrylate, polyether acrylate, polyol acrylate and melamine acrylate, and cationically polymerizable epoxy compounds. .
- Examples of the monomer in the ionizing radiation-curable composition include styrene monomers such as styrene and ⁇ -methylstyrene, methyl acrylate, 2-ethylhexyl acrylate, methoxyethyl acrylate, and butoxycyl acrylate.
- Acrylates such as butyl acrylate, methoxybutyl acrylate, and phenyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, methoxymethacrylate, ethoxymethyl methacrylate, phenyl methacrylate, lauryl methacrylate, etc.
- Methacrylic acid esters Atalinoleic acid 2- ( ⁇ , ⁇ Jetylamino) ethyl, Acrylic acid 2- ( ⁇ , ⁇ ⁇ ⁇ Dimethylamino) Ethyl, Acrylic acid— 2_ ( ⁇ , ⁇ -Dibenzylamino) methyl, Acrylic acid— 2_ ( ⁇ , ⁇ —Jetylamino) Pro
- Unsaturated substituted amino alcohol esters such as pills, unsaturated carboxylic acid amides such as acrylanolamide and methacrylamide, ethylene glycol diatalylate, propylene glycolinoresyl acrylate, neopentino glycol diolis Rate, 1,6-hexanediol diatalylate, triethylene glycol diatalylate, etc., dipropylene glycol diatalylate, ethylene glycol diatalylate, propylene Polyfunctional compounds such as glycol dimetatalylate and diethylene glycol dimetatalylate, and poly
- Monomers in the ionizing radiation curable composition may be used alone or in combination of two or more. However, in order to give normal application suitability to the ionizing radiation curable composition, It is preferable to mix the oligomer at 5% by weight or more and the monomer and / or polythiol compound at 95% by weight or less.
- Examples of the functional group having 3 or more include trimethylolpropane tritalylate, pentaerythritol tritalylate, pentaerythritol tetratalylate, dipentaerythritol hexaatalylate and the like. All of the above acrylate monomers may be meta acrylate monomers.
- a polymer resin that is not cured by ionizing radiation irradiation is applied to the ionizing radiation curable composition.
- the polymer resin include thermoplastic resins such as a polyurethane resin, a cellulose resin, a polybutyral resin, a polyester resin, an acrylic resin, a polyvinyl chloride resin, and a polyvinyl acetate, preferably a polyurethane resin, Cellulose resin, polybulutyl resin, etc. are mentioned.
- a photopolymerization initiator or a photopolymerization accelerator is added.
- the photopolymerization initiator in the case of a resin system having a radically polymerizable unsaturated group, acetophenones, benzophenones, thixanthates are used. , Benzoin, benzoin methyl ether, etc. are used alone or in combination.
- an aromatic diazonium salt, an aromatic sulfone salt, an aromatic iodine salt, a metatheron compound, a benzoin sulfonic acid ester or the like is used alone or as a mixture.
- the addition amount of the photopolymerization initiator is 0.1 to 10 parts by weight with respect to 100 parts by weight of the ionizing radiation curable composition.
- the following organic reactive silicon compound may be used in combination.
- One of the organic silicon compounds can be represented by the general formula R Si (OR '), and R and R' are carbon.
- the organosilicon compound that can be used in combination with the ionizing radiation curable composition is a silane coupling agent. Specifically, ⁇ _ (2-aminoethyl) aminopropyltrimethoxysilane,-(2-aminoethyl) aminopropylmethyldimethoxysilane, _ (3,4-epoxycyclohexyl) ethyltrimethoxysilane , ⁇ -aminopropyltriethoxysilane, ⁇ -methacrylo
- Silane methylmethoxysilane, butyltrioxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ -chloropropyltrimethoxysilane, hexamethyldisilazane, butyltris (iS-methoxyethoxy) silane, octadecyldimethyl [3 — (Trimethoxysilyl) pro Pill] ammonium chloride, methyltrichlorosilane, dimethyldichlorosilane and the like.
- a composition obtained by mixing an antistatic agent, a resin and a solvent is applied by a coating method such as a roll coating method, a Miyaba coating method, a gravure coating method, or a die coating method. Apply.
- a coating method such as a roll coating method, a Miyaba coating method, a gravure coating method, or a die coating method.
- Apply Next, after the application of the liquid composition, drying and ultraviolet curing are performed.
- As a method for curing the ionizing radiation curable resin composition it is cured by irradiation with an electron beam or ultraviolet rays.
- electron beam curing an electron beam having energy of 100 KeV to 300 KeV is used.
- UV curing UV light such as ultra high pressure mercury lamp, high pressure mercury lamp, low pressure mercury lamp, carbon arc, xenon arc, metal halide lamp, etc. is used.
- the refractive index layer and other layers may also be formed by the method described above.
- the optical laminate according to the present invention is used as a hard coat laminate, preferably as an antireflection laminate.
- the optical laminate according to the present invention is used in a transmissive image display device.
- it is used for the display of televisions, computers, word processors, etc.
- it is used on the surface of displays such as CRTs, PDPs, LEDs, and liquid crystal panels.
- a polarizing plate is mainly composed of two protective laminates sandwiching a polarizing film between both sides.
- the antireflection laminate of the present invention is preferably used for at least one of the two protective laminates sandwiching the polarizing film between both sides. Since the optical laminate of the present invention also serves as a protective laminate, the production cost of the polarizing plate can be reduced. Further, by using the optical layered body of the present invention as the outermost layer, reflection of external light and the like can be prevented, and a polarizing plate having excellent scratch resistance and antifouling properties can be obtained.
- the polarizing film is a known polarizing film, and is perpendicular to the longitudinal direction even if the absorption axis of the polarizing film is parallel to the longitudinal direction. You may use the polarizing film cut out from the elongate polarizing film which is not straight.
- a composition for each layer constituting the optical laminate was prepared by mixing and filtering according to the following composition.
- Diacetyl cellulose (L-50 manufactured by Daicel Chemical Industries)
- Photoinitiator Irgacure 184 3 parts by weight
- composition 2 for optical adjustment layer
- Photoinitiator Irgacure 184 4 parts by weight
- Diacetyl cellulose (L-50 manufactured by Daicel Chemical Industries)
- composition 4 for optical adjustment layer
- Diacetyl cellulose (L-50 manufactured by Daicel Chemical Industries)
- Diacetyl cellulose (L-50 manufactured by Daicel Chemical Industries)
- Photoinitiator Irgacure 184 3 parts by weight
- composition for hard coat layer 1 Composition for hard coat layer 1
- composition 2 for hard coat layer [0087] Composition 2 for hard coat layer
- Photoinitiator Irgacure 184 3 parts by weight (Product name: Ciba Specialty Chemicals)
- composition 5 for hard coat layer [0090] Composition 5 for hard coat layer
- Isocyanuric acid EO modified diatalylate 50 parts by weight (M215 manufactured by Toagosei Co., Ltd.)
- Isocyanuric acid EO modified diatalylate 100 parts by weight (M215 manufactured by Toagosei Co., Ltd.)
- Tonoleen 100 parts by weight Photoinitiator: Irgacure 184 3 parts by weight (Product name: Ciba Specialty Chemicals)
- Photocurable resin PET30 (trade name: Nippon Kayaku Co., Ltd.) 2 parts by weight
- Photopolymerization initiator Irgacure 907 0. 3 parts by weight
- Pentaerythritol triatolate (PETA) 1. 95 parts by weight Irgacure 907 (Cibas Specialty Chemicals; Polyether-modified silicone oil TSF4460 0.15 parts by weight
- a preparation of ItHi triacetate cellulose (TAC) film was prepared, and the optical adjustment composition 1 was bar-coated on the surface of the film, and the solvent was removed by drying.
- TAC ItHi triacetate cellulose
- UV irradiation was performed at an irradiation dose of 72 mj / cm 2 , the composition was cured, and an optical adjustment layer of 3 / m was formed. .
- the hard coat layer composition 1 is bar-coated on the surface of the optical adjustment layer, the solvent is removed by drying, and then an ultraviolet irradiation device (Fusion UV System Japan Co., Ltd., light source H bulb) is used. Then, an ultraviolet ray was irradiated at an irradiation dose of 108 mj / cm 2 , the composition was cured to form a 5 zm hard coat layer, and an optical laminate was prepared.
- an ultraviolet irradiation device Fusion UV System Japan Co., Ltd., light source H bulb
- Example 3 On the hard coat layer in the optical laminate prepared in Example 1, a composition for a high refractive index layer (refractive index 1.64) was bar coated, and after drying the solvent, UV irradiation was performed with lOOmjZcm 2 . A high refractive index layer having a thickness of 80 nm was formed. Thereafter, the composition 1 for the low refractive index layer 1 is bar-coated on the high refractive index layer, and after removing the solvent by drying, an ultraviolet irradiation device (Fusion UV System Japan Co., Ltd., light source H bulb) is used. Then, it was cured by being irradiated with ultraviolet rays at an irradiation dose of 192 mj / cm 2 to obtain an optical laminate. The film thickness was adjusted so that the minimum value of the reflectivity was around 550 nm. [0098] Example 3
- Example 1 TAC having a thickness of 40 xm was used, optical adjustment composition 1 was used as optical adjustment composition 2, hard coat composition composition 1 was used as hard coat composition composition 2 ⁇
- the optical layered body was prepared in the same manner except that it was changed. After that, the low refractive index layer composition 2 is bar-coated on the hard coat layer of the optical laminate, and after removing the solvent by drying, an ultraviolet irradiation device (Fusion UV System Japan Co., Ltd., light source H bulb) ) was cured by irradiating with ultraviolet rays at an irradiation dose of 192 mj / cm 2 to obtain an optical laminate. The film thickness was adjusted so that the minimum value of reflectivity was around 550 nm.
- Example 1 the optical laminate was prepared in the same manner except that composition 1 for optical adjustment layer was changed to composition 3 for optical adjustment layer and composition 1 for hard coat layer was changed to composition 5 for hard coat layer. Prepared.
- Example 1 the optical laminate was prepared in the same manner except that composition 1 for optical adjustment layer was changed to composition 4 for optical adjustment layer and composition 1 for hard coat layer was changed to composition 6 for hard coat layer. Prepared.
- TAC triacetate cellulose
- An optical laminate was prepared in the same manner as in Comparative Example 1, except that the hard coat layer composition 3 was changed to the hard coat layer composition 4.
- An optical laminate was prepared in the same manner as in Example 1, except that the composition 1 for the optical adjustment layer was changed to the composition 5 for the optical adjustment layer.
- the cross section of the optical laminate was observed through transmission to determine the presence or absence of an interface, and the following evaluation criteria were used. Specifically, in order to obtain a clear image without halation, a wet objective lens is used for the confocal laser microscope, and about 2 ml of oil having a refractive index of 1.518 is placed on the optical laminate. Observed and judged. The use of oil was used to eliminate the air layer between the objective lens and the optical stack. In the optical layered body of each example and comparative example, this test was performed when the optical adjustment layer and the hard coat layer were laminated on the light transmissive substrate.
- Note 1 In all of the examples according to the present invention, as shown in FIG. 1, only the interface of the oil surface (upper layer) Z hard coat layer (lower layer) is observed, and the interface between the hard coat layer and the light transmissive substrate is observed. It was not done.
- Note 2 In all of the comparative examples, as shown in FIG. 2, an interface was observed at the boundary between the oil surface (upper layer), Z hard coat layer (middle layer), and Z light-transmitting substrate (lower layer).
- the outermost surface of the optical laminate was rubbed 10 times with the specified friction load (changed every 200g within the range of 200-: 1600g) using # 0000 steel wool, and then the film was peeled off The presence or absence of was visually observed and evaluated according to the following criteria.
- Evaluation X The coating film was peeled off.
Abstract
Description
Claims
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009069428A (ja) * | 2007-09-12 | 2009-04-02 | Dainippon Printing Co Ltd | 光学積層体の製造方法、光学積層体、偏光板及び画像表示装置 |
JP2014000806A (ja) * | 2012-06-18 | 2014-01-09 | Dongwoo Fine-Chem Co Ltd | ハードコーティングフィルム、これを備えた偏光板及び画像表示装置 |
US9182522B2 (en) | 2010-04-15 | 2015-11-10 | Nitto Denko Corporation | Hard coat film, polarizing plate, image display device, and method for producing hard coat film |
JP2020060766A (ja) * | 2018-10-08 | 2020-04-16 | 三星電子株式会社Samsung Electronics Co., Ltd. | 積層フィルム、および積層フィルムを含む表示装置 |
EP3418782B1 (en) * | 2016-12-26 | 2023-05-03 | LG Chem, Ltd. | Polarizer protection film, polarizing plate comprising the same, liquid crystal display comprising the polarizing plate, and coating composition for polarizer protecting film |
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EP3178343B8 (fr) | 2015-12-08 | 2019-08-07 | Omega SA | Bracelet |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0894801A (ja) * | 1994-07-29 | 1996-04-12 | Hoya Corp | ハードコート層を有するプラスチックレンズ |
JP2000266904A (ja) * | 1999-03-17 | 2000-09-29 | Seiko Epson Corp | 光学製品及びその製造方法 |
JP2001059902A (ja) * | 1999-08-23 | 2001-03-06 | Toppan Printing Co Ltd | 反射防止積層体およびその製造方法 |
JP2003131007A (ja) * | 2001-10-29 | 2003-05-08 | Toppan Printing Co Ltd | 光学フィルム及びその製造方法 |
JP2004263082A (ja) * | 2003-03-03 | 2004-09-24 | Nippon Paper Industries Co Ltd | 塗工フィルム及びこれを用いた反射防止フィルム |
JP2004309932A (ja) * | 2003-04-09 | 2004-11-04 | Dainippon Printing Co Ltd | 表示素子用基材、表示パネル、表示装置及び表示素子用基材の製造方法 |
JP2005070744A (ja) * | 2003-08-05 | 2005-03-17 | Konica Minolta Opto Inc | 光学フィルム、光学フィルムの製造方法、偏光板及び表示装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1662373A (zh) * | 2002-06-24 | 2005-08-31 | 富士胶片株式会社 | 塑料膜和图象显示单元 |
EP1548468A4 (en) * | 2002-10-02 | 2006-04-26 | Bridgestone Corp | OPTICAL BASE AND ANTIREFLEX FILM |
-
2006
- 2006-03-14 TW TW095108626A patent/TWI394662B/zh active
- 2006-03-15 JP JP2007508179A patent/JP5340591B2/ja not_active Expired - Fee Related
- 2006-03-15 KR KR1020077023516A patent/KR101263967B1/ko active IP Right Grant
- 2006-03-15 WO PCT/JP2006/305123 patent/WO2006098363A1/ja active Application Filing
- 2006-03-15 US US11/885,715 patent/US7947341B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0894801A (ja) * | 1994-07-29 | 1996-04-12 | Hoya Corp | ハードコート層を有するプラスチックレンズ |
JP2000266904A (ja) * | 1999-03-17 | 2000-09-29 | Seiko Epson Corp | 光学製品及びその製造方法 |
JP2001059902A (ja) * | 1999-08-23 | 2001-03-06 | Toppan Printing Co Ltd | 反射防止積層体およびその製造方法 |
JP2003131007A (ja) * | 2001-10-29 | 2003-05-08 | Toppan Printing Co Ltd | 光学フィルム及びその製造方法 |
JP2004263082A (ja) * | 2003-03-03 | 2004-09-24 | Nippon Paper Industries Co Ltd | 塗工フィルム及びこれを用いた反射防止フィルム |
JP2004309932A (ja) * | 2003-04-09 | 2004-11-04 | Dainippon Printing Co Ltd | 表示素子用基材、表示パネル、表示装置及び表示素子用基材の製造方法 |
JP2005070744A (ja) * | 2003-08-05 | 2005-03-17 | Konica Minolta Opto Inc | 光学フィルム、光学フィルムの製造方法、偏光板及び表示装置 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009069428A (ja) * | 2007-09-12 | 2009-04-02 | Dainippon Printing Co Ltd | 光学積層体の製造方法、光学積層体、偏光板及び画像表示装置 |
US9182522B2 (en) | 2010-04-15 | 2015-11-10 | Nitto Denko Corporation | Hard coat film, polarizing plate, image display device, and method for producing hard coat film |
JP2014000806A (ja) * | 2012-06-18 | 2014-01-09 | Dongwoo Fine-Chem Co Ltd | ハードコーティングフィルム、これを備えた偏光板及び画像表示装置 |
EP3418782B1 (en) * | 2016-12-26 | 2023-05-03 | LG Chem, Ltd. | Polarizer protection film, polarizing plate comprising the same, liquid crystal display comprising the polarizing plate, and coating composition for polarizer protecting film |
JP2020060766A (ja) * | 2018-10-08 | 2020-04-16 | 三星電子株式会社Samsung Electronics Co., Ltd. | 積層フィルム、および積層フィルムを含む表示装置 |
JP7359630B2 (ja) | 2018-10-08 | 2023-10-11 | 三星電子株式会社 | 積層フィルム、および積層フィルムを含む表示装置 |
US11945199B2 (en) | 2018-10-08 | 2024-04-02 | Samsung Electronics Co., Ltd. | Laminated film, and display device including same |
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US20080204882A1 (en) | 2008-08-28 |
TWI394662B (zh) | 2013-05-01 |
KR101263967B1 (ko) | 2013-05-13 |
JPWO2006098363A1 (ja) | 2008-08-28 |
JP5340591B2 (ja) | 2013-11-13 |
US7947341B2 (en) | 2011-05-24 |
KR20080003342A (ko) | 2008-01-07 |
TW200642845A (en) | 2006-12-16 |
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