WO2024167170A1 - 하드코팅 필름 및 이를 포함하는 화상표시장치 - Google Patents
하드코팅 필름 및 이를 포함하는 화상표시장치 Download PDFInfo
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- WO2024167170A1 WO2024167170A1 PCT/KR2024/001060 KR2024001060W WO2024167170A1 WO 2024167170 A1 WO2024167170 A1 WO 2024167170A1 KR 2024001060 W KR2024001060 W KR 2024001060W WO 2024167170 A1 WO2024167170 A1 WO 2024167170A1
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3405—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of organic materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/66—Additives characterised by particle size
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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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
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Definitions
- the present invention relates to a hard coating film and an image display device including the same.
- image display devices such as liquid crystal display (LCD) devices and organic light emitting display (OLED) devices
- LCD liquid crystal display
- OLED organic light emitting display
- the image display devices are widely applied to various smart devices characterized by portability, including not only smart phones and tablet PCs, but also various wearable devices.
- Such display devices may include additional functional layers on one or both sides of a substrate such as glass or resin to impart mechanical and optical properties such as transparency, durability such as hardness, bending properties, and/or anti-fouling properties.
- Korean Patent Publication No. 10-2444443 discloses a flexible window cover film having improved properties suitable for flexible characteristics such as bending resistance, pencil hardness, and elastic recovery rate by including a hard coating layer.
- a hard coating layer having improved properties suitable for flexible characteristics such as bending resistance, pencil hardness, and elastic recovery rate by including a hard coating layer.
- optical properties related to refractive index or reflectivity may be deteriorated due to improved durability.
- the present invention aims to solve the above-described problems by providing a hard coating film having improved optical properties by controlling the reflectance of the hard coating film to 2% or more and less than 3%, and an image display device including the same.
- the present invention aims to provide a hard coating film having excellent mechanical properties while controlling reflectivity within the above range, and an image display device including the same.
- the present invention relates to a hard coating film comprising: a hard coating layer; and a low-refractive-index layer formed on the hard coating layer, wherein the low-refractive-index layer is formed of a composition for forming a low-refractive-index layer, wherein the composition for forming a low-refractive-index layer includes a fluorine-containing UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles, wherein the low-refractive-index layer has a thickness of 50 to 200 nm and a value of the following formula 1 is 90 to 150%.
- A is the average particle diameter of hollow silica particles included in the composition for forming a low refractive layer
- B is the average particle diameter of nano silica particles included in the composition for forming a low refractive layer.
- the fluorine-based UV-curable functional group-containing compound may have 1 to 6 UV-curable functional groups in the molecule.
- the present invention may be characterized in that the hard coating film has a reflectivity of 2% or more and less than 3%.
- the hard coating layer and the low refractive index layer may be formed on at least one substrate selected from a release film formed of a polyester resin, a polyimide resin, an acrylic resin, a styrene resin, a polycarbonate resin, a polylactic acid resin, a polyurethane resin, a polyolefin resin, a vinyl resin, a polyamide resin, a sulfone resin, a polyether-ether ketone resin, an allylate resin, a cellulose resin, and a mixture of the above resins.
- the present invention may further comprise at least one selected from the group consisting of a light-transmitting resin, an initiator, and a solvent, in the composition for forming the low-refractive layer.
- the present invention may be characterized in that the hollow silica particles have a refractive index of 1.17 to 1.40.
- the present invention may be characterized in that the hollow silica particles are included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the total composition for forming a low refractive layer.
- the present invention may be characterized in that the average particle diameter of the nano silica particles is 80 to 130 nm.
- the composition for forming the low refractive index layer may include, as an additive, at least one selected from the group consisting of a leveling agent, an ultraviolet stabilizer, and a heat stabilizer.
- the present invention may relate to an image display device including the hard coating film.
- the reflectance can be controlled to 2% or more and less than 3%.
- the hard coating film according to the present invention it is possible to provide a hard coating film having excellent physical and/or optical properties and an image display device including the same, by having the characteristics of a high initial water contact angle and excellent haze prevention, scratch resistance, and wear resistance.
- FIG. 1 is a diagram showing a laminated structure of a substrate layer including a hard coating film and a substrate according to one embodiment of the present invention.
- the present invention relates to a hard coating film including a hard coating layer formed on a substrate; and a low-refractive layer formed on the hard coating layer; and an image display device including the same.
- the hard coating film may be characterized in that the reflectivity can be controlled to be 2% or more and less than 3% while maintaining excellent mechanical properties.
- the low-refractive-index layer is formed of a composition for forming a low-refractive-index layer
- the composition for forming a low-refractive-index layer includes a fluorine-based UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles
- the low-refractive-index layer may have a thickness of 50 to 200 nm, and a value of the following formula 1 may be 90 to 150%
- at least one of the hard coating layer and the low-refractive-index layer may include a fluorine-based UV-curable functional group-containing compound.
- A is the average particle diameter of hollow silica particles included in the composition for forming a low refractive layer
- B is the average particle diameter of nano silica particles included in the composition for forming a low refractive layer.
- the hard coating film can maintain excellent mechanical properties while having a reflectivity of 2% or more and less than 3%. This may be an advantage that can be obtained according to the characteristics of the composition including a fluorine-based UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles in an average particle diameter ratio of 90 to 150% in the low refractive index layer.
- a hard coating film having excellent physical properties such as a high initial water contact angle, haze prevention, scratch resistance, and abrasion resistance, and/or an image display device including the same having excellent optical properties can be provided.
- hard coating layer used in this specification may mean at least one hard coating layer among a hard coating layer and a low-refractive-index layer.
- substantially may be interpreted to include not only physically completely identical or identical, but also within a range of error in the measurement or manufacturing process, for example, it may be interpreted to mean an error range of 0.1% or less.
- transparent means that the transmittance of visible light is 70% or more or 80% or more.
- a hard coating film (120) may include a hard coating layer (121); and a low-refractive layer (122) formed on the hard coating layer. More specifically, the hard coating film (120) of the present invention is to be formed on a substrate (110), and the low-refractive layer is formed of a composition for forming a low-refractive layer, and the composition for forming a low-refractive layer includes a fluorine-based UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles, and the low-refractive layer has a thickness of 50 to 200 nm, and satisfies the value of the following Equation 1 of 90 to 150%, thereby controlling the reflectivity of a display device including the hard coating film to 2 to 3%, thereby providing an image display device with improved optical characteristics, and the image display device may have excellent mechanical properties.
- the reflectivity of the film can be lowered, the transmittance can be increased, and the brightness can be increased, so that there is an advantage in that the battery power consumption is lowered.
- the refractive index can be lowered and the reflectivity can be lowered as the content relative to the nano-silica particles increases, but there is a disadvantage in that the mechanical properties are deteriorated.
- the hard coating film according to an embodiment of the present invention can improve the mechanical properties by including a fluorine-based UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles together in the composition for forming a low-refractive-index layer, thereby lowering the reflectivity while increasing the hardness.
- the hard coating film according to the present invention is characterized in that it is formed through direct contact without including a separate substrate layer for bonding the hard coating layer, so that the manufacturing process can be simplified compared to a conventional laminate.
- A is the average particle diameter of hollow silica particles included in the composition for forming a low refractive layer
- B is the average particle diameter of nano silica particles included in the composition for forming a low refractive layer.
- the hard coating layer (121) may be manufactured from a composition for forming a hard coating layer.
- the composition for forming a hard coating layer may include at least one selected from the group consisting of a light-transmitting resin, an initiator, and a solvent, and may further include an additive.
- the additive may include at least one selected from the group consisting of a leveling agent, an ultraviolet stabilizer, and a heat stabilizer.
- other known components included in a hard coating layer composition in the relevant field may be further included without limitation within a range that does not affect the purpose and effect of the present invention.
- the hard coating layer (121) is formed on a substrate (110) to be described later, and the hard coating layer (121) according to one embodiment of the present invention can be manufactured by applying a composition for forming a hard coating layer on a substrate (110) and then curing it with light or heat.
- the composition for forming a hard coating layer of the present invention can be a composition for forming a hard coating layer that has excellent adhesion to the substrate (110) and can improve mechanical properties such as hardness, scratch resistance, antifouling properties, wear resistance, chemical resistance, and bending resistance.
- the light-transmitting resin used in forming the hard coating layer of the present invention contains a photopolymerizable functional group and may be a photopolymerizable monomer, a photopolymerizable oligomer, or the like, and may be, for example, a photoradically polymerizable compound.
- the photopolymerizable monomer is a commonly used photocurable functional group, and for example, a monomer used in the relevant technical field having an unsaturated group such as a (meth)acryloyl group, a vinyl group, a styryl group, an allyl group, etc. in the molecule can be used without limitation, and more specifically, examples thereof include monofunctional and/or polyfunctional (meth)acrylates. These can be used alone or in mixtures of two or more.
- (meth)acryl- refers to “methacryl-”, “acryl-” or both.
- (meth)acrylate monomers include (meth)acrylic acid esters, such as trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, glycerol tri(meth)acrylate, tris(2-hydroxyethyl)isocyanurate tri(meth)acrylate, ethylene glycol di(meth)acrylate, propylene glycol (meth)acrylate, 1,3-butanediol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, Bis(2-hydroxyethyl)isocyanurate di(meth)acrylate, poly(meth)acrylates
- the photopolymerizable oligomer may be, for example, at least one selected from the group consisting of epoxy (meth)acrylate, urethane (meth)acrylate, and polyester (meth)acrylate, and specifically, a mixture of urethane (meth)acrylate and polyester (meth)acrylate may be used, or a mixture of two types of polyester (meth)acrylates may be used. It is preferable to include a urethane (meth)acrylate oligomer to improve the scratch resistance and hardness of the cured product and to increase the elastic modulus of the hard coating layer.
- the above urethane (meth)acrylate can be produced by reacting a polyfunctional (meth)acrylate having a hydroxy group in the molecule and a compound having an isocyanate group in the presence of a catalyst according to a method known in the art.
- polyfunctional (meth)acrylate having a hydroxy group in the molecule may be at least one selected from the group consisting of 2-hydroxyethyl (meth)acrylate, 2-hydroxyisopropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, caprolactone ring-opening hydroxyacrylate, a pentaerythritol tri/tetra(meth)acrylate mixture, and a dipentaerythritol penta/hexa(meth)acrylate mixture.
- compounds having an isocyanate group include 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, 1,12-diisocyanatododecane, 1,5-diisocyanato-2-methylpentane, trimethyl-1,6-diisocyanatohexane, 1,3-bis(isocyanatomethyl)cyclohexane, trans-1,4-cyclohexenediisocyanate, 4,4'-methylenebis(cyclohexylisocyanate), isophoronediisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethylxylene-1,3-diisocyanate, It may be at least one selected from the group consisting of 1-
- the urethane (meth)acrylate oligomer may be a compound including two or more substituents and (meth)acrylate groups each represented by the following chemical formula 1 within the molecule.
- the above urethane (meth)acrylate oligomer may be produced by reacting 1 mol of diisocyanate represented by the following chemical formula 2 and 2 mol of an active hydrogen-containing polymerizable unsaturated compound.
- R 1 and R 2 are each independently a substituent including a (meth)acryloyl group derived from an active hydrogen-containing polymerizable unsaturated compound, and R 3 is a divalent substituent derived from diisocyanate.
- urethane (meth)acrylate oligomers include reaction of 2-hydroxyethyl (meth)acrylate and 2,4-tolylene diisocyanate, reaction of 2-hydroxyethyl (meth)acrylate and isophorone diisocyanate, reaction of 2-hydroxybutyl (meth)acrylate and 2,4-tolylene diisocyanate, reaction of 2-hydroxybutyl (meth)acrylate and isophorone diisocyanate, reaction of pentaerythritol tri(meth)acrylate and 2,4-toluene diisocyanate, reaction of pentaerythritol tri(meth)acrylate and isophorone diisocyanate, reaction of pentaerythritol tri(meth)acrylate and dicyclohexyl methane diisocyanate, dipentaerythritol.
- It may be a product of the reaction of penta(meth)acrylate and isophorone diisocyanate, or the reaction of dipentaerythritol penta(meth)acrylate and dicyclohexyl methane diisocyanate.
- Polyester (meth)acrylate can be prepared by reacting polyester polyol and acrylic acid according to methods known in the art.
- the polyester (meth)acrylate may be, for example, at least one selected from the group consisting of polyester acrylate, polyester diacrylate, polyester tetraacrylate, polyester hexaacrylate, polyester pentaerythritol triacrylate, polyester pentaerythritol tetraacrylate, and polyester pentaerythritol hexaacrylate, but is not limited thereto.
- the photopolymerizable monomer and the photopolymerizable oligomer can be used alone or in combination.
- the workability and compatibility of the hard coating composition can be increased.
- the content ratio of the photopolymerizable monomer and the photopolymerizable oligomer is not particularly limited and may be appropriately selected in consideration of the storage elastic modulus, shrinkage force, workability, etc. of the hard coating layer.
- the content ratio of the polymerizable oligomer to the polymerizable monomer may be included in a ratio of (1:10) to (10:1). If the content ratio of the polymerizable oligomer to the polymerizable monomer is out of the above range, the storage elastic modulus of the hard coating layer may decrease or the shrinkage force may increase, resulting in a decrease in hardness and flexibility, which may cause curling.
- the content of the above-mentioned light-transmitting resin is not particularly limited, but may be included in an amount of, for example, 1 to 80 parts by weight, preferably 1 to 50 parts by weight, based on 100 parts by weight of the total hard coating composition. If the light-transmitting resin is less than 1 part by weight, the elasticity of the hard coating layer decreases, so that cracks may easily occur in the hard coating layer when bent, and if it exceeds 80 parts by weight, the viscosity increases, so that the applicability deteriorates, and the surface leveling is insufficient, so that problems with the appearance characteristics may occur.
- the above-mentioned transparent resin can be used together with an inorganic nano filler to improve hardness and scratch resistance.
- the above-mentioned inorganic nano filler is generally a nano filler having a size of less than 100 nm, preferably 10 to 100 nm, and more preferably 10 to 50 nm.
- Representative inorganic nano fillers include, for example, silica, aluminum oxide particles, titanium oxide particles, or zinc oxide particles, and silica is preferably used.
- the silica may have a photocurable group capable of participating in a photoreaction on the surface, or may not have one.
- the above inorganic nano filler can be added by appropriately adjusting the content within a range that does not hinder the effects of the present invention.
- the above initiator can be used without limitation as long as it is used in the relevant technical field.
- at least one selected from the group consisting of hydroxyketones, aminoketones, hydrogen abstraction type photoinitiators, and combinations thereof can be used.
- the photoinitiator may be at least one selected from the group consisting of 2-methyl-1-[4-(methylthio)phenyl]2-morpholinepropanone-1, diphenyl ketone, benzyl dimethyl ketal, 2-hydroxy-2-methyl-1-phenyl-1-one, 4-hydroxycyclophenyl ketone, 2,2-dimethoxy-2-phenyl-acetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-xenoloacetophenone, 4,4-dimethoxyacetophenone, 4,4-diaminobenzophenone, 1-hydroxycyclohexyl phenyl ketone, benzophenone, diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide, and combinations thereof.
- photoinitiators are used in an amount of 0.1 to 10 parts by weight, preferably 0.3 to 5 parts by weight, based on 100 parts by weight of the entire hard coating composition. If the content is less than the above range, the curing speed of the composition is slow and uncured, resulting in poor mechanical properties. On the other hand, if the content exceeds the above range, cracks may occur in the coating film due to over-curing.
- the above solvent can be used without limitation as long as it is known as a solvent for a composition for forming a coating layer in the technical field of the present invention that can dissolve or disperse the composition mentioned above.
- Available solvents include alcohols (methanol, ethanol, isopropanol, butanol, methyl cellusob, ethyl solusob, etc.), ketones (methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone, diethyl ketone, dipropyl ketone, cyclohexanone, etc.), acetates (ethyl acetate, propyl acetate, normal butyl acetate, tert-butyl acetate, methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, methoxypentyl acetate, etc.), hexane (hexane, heptane, o
- solvents can be used in an amount of 10 to 95 parts by weight based on 100 parts by weight of the entire hard coating composition, and can be included as a remainder excluding other components in the composition. If the content of the solvent is less than the above content, the viscosity is high, which reduces workability and makes it difficult to sufficiently promote swelling of the base film. On the other hand, if it exceeds the above range, the drying process takes a long time and is less economical, so it is appropriately used within the above range.
- the hard coating layer forming composition used for forming the hard coating layer according to the present invention may further include, in addition to the above-described components, at least one selected from the group consisting of a leveling agent, an ultraviolet stabilizer, and a heat stabilizer as additives, and may additionally include an additive commonly used in the technical field to which the present invention belongs.
- the content thereof may be variously adjusted within a range that does not deteriorate the physical properties of the hard coating layer forming composition according to the present invention, and therefore is not particularly limited.
- a leveling agent is a component that provides smoothness and coatability to a film.
- the leveling agent can be a leveling agent commonly used in the art, and examples thereof include a silicone-based leveling agent, a fluorine-based leveling agent, and an acrylic polymer-based leveling agent. These may be used alone or in combination of two or more, but are not necessarily limited thereto.
- a hard coating layer preferably further includes a silicone-based or acrylic polymer-based additive instead of a fluorine-based UV-curable functional group-containing compound included in a low-refractive layer, which will be described later, so as to lower the contact angle and facilitate coating of a low-refractive layer on the hard coating layer.
- the leveling agent may be included in an amount of 0.1 to 1 part by weight per 100 parts by weight of the hard coating composition, but is not limited thereto.
- a UV stabilizer is a component that blocks or absorbs UV rays, thereby preventing decomposition, discoloration, and crumbling of the cured hard coating layer due to exposure to UV rays.
- the UV stabilizer may include, based on their mechanism of action, absorbers, quenchers, hindered amine light stabilizers (HALS), etc.; or based on their chemical structure, phenyl salicylates (absorbers), benzophenone (absorbers), benzotriazole (absorbers), nickel derivatives (quenchers), radical scavengers, etc. These may be used singly or in mixtures of two or more, and there is no particular limitation on the type of UV stabilizer as long as it does not significantly change the initial color of the hard coating layer.
- heat stabilizers for example, commercially applicable products include primary heat stabilizers such as polyphenols, secondary heat stabilizers such as phosphates and lactones, which can be used singly or in combination. These can be used singly or in combination of two or more.
- the above UV stabilizer and heat stabilizer can be used by appropriately adjusting the content at a level that does not affect UV curability, and specifically, it is preferable to include 0.1 to 3 parts by weight based on 100 parts by weight of the total hard coating composition of the present invention.
- the above additives can be added by appropriately adjusting the content within a range that does not impede the effects of the present invention.
- the low-refractive-index layer (122) can be manufactured by applying a composition for forming a low-refractive-index layer onto the hard coating layer (121) and then curing it with light or heat, and provides characteristics such as low reflectivity and excellent mechanical properties and wear resistance.
- the composition for forming a low-refractive-index layer includes a fluorine-based UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles, and the thickness of the low-refractive-index layer may be 50 to 200 nm, and the value of the following Equation 1, which calculates the ratio of the average particle diameters of each of the hollow silica particles and the nano-silica particles, may be 90 to 150%.
- A may be the average particle diameter of hollow silica particles included in the composition for forming a low refractive layer
- B may be the average particle diameter of nano silica particles included in the composition for forming a low refractive layer.
- the low refractive index layer (122) according to the present invention can be manufactured through a composition for forming a second hard coating layer, and the composition can include the fluorine-based UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles, and can further include at least one selected from the group consisting of a light-transmitting resin, an initiator, and a solvent, and/or an additive.
- the light-transmitting resin, initiator, solvent, and additive can be applied as described in the description of the hard coating layer (121), so their description is omitted.
- the fluorine-based UV-curable functional group-containing compound is a component that controls refractive index and provides antifouling properties and wear resistance, and must contain fluorine. If it also has a UV-curable functional group, the compound is not particularly limited.
- the fluorine-based UV-curable functional group-containing compound is included in a hard coating film formed on a polymer material, thereby increasing the initial water contact angle and lowering the refractive index, thereby controlling the reflectivity and transmittance of the image display device to be described later.
- the initial water contact angle and wear resistance performance can be improved.
- the fluorine-based UV-curable functional group-containing compound may be an acrylate, methacrylate, vinyl, etc. containing a perfluoro group.
- the fluorine-based UV-curable functional group-containing compound preferably has 1 to 6 UV-curable functional groups, but the scope of the present invention is not limited thereto, and any substance containing a UV-curable functional group and a fluorine group may be applied.
- the fluorine-based UV-curable functional group-containing compound is included in an amount of 0.01 to 30 parts by weight based on 100 parts by weight of the entire composition for forming a hard coating layer. If it is less than 0.01 parts by weight, the initial contact angle may be lowered, thereby deteriorating the wear resistance, and if it exceeds 30 parts by weight, the mechanical performance such as the hardness of the film may be lowered, thereby deteriorating the wear resistance.
- the low refractive layer (122) may include hollow silica particles, and the hollow silica particles may be characterized by a refractive index of 1.17 to 1.40.
- the hollow silica particles above are silicon-based fine particles, which have a low refractive index and thus can reduce the reflectivity of an image display device to be described later, and are characterized by being optically transparent.
- the hollow silica particles have a refractive index of 1.17 to 1.40, which is advantageous in terms of reducing reflectivity.
- the hollow silica particles can be applied to have low dielectric constant properties in addition to optical functions.
- the above hollow silica particles preferably have an average particle diameter of 20 to 80 nm, preferably 20 to 70 nm, in terms of composition processability and applicability, and the shape of the particles is preferably spherical, but is not limited thereto.
- the hollow silica particles are preferably included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the total composition for forming a low-refractive layer, and are more preferably included in an amount of 1 to 15 parts by weight because they can reduce reflectivity and provide excellent mechanical properties.
- the low-refractive-index layer (122) may include nano-silica particles, and the nano-silica particles are silicon-based fine particles, such as the hollow silica particles, and may be characterized by an average particle diameter of 70 nm or more, preferably 80 to 130 nm, and more preferably 100 to 130 nm.
- the nano-silica particles may be those in which no cavities are formed on the surface and/or inside compared to the hollow silica particles, and may be included in a composition for forming a low-refractive-index layer to impart durability, such as scratch resistance and wear resistance, to the surface.
- the above nano-silica particles have the advantage of improved dispersibility and easy redispersibility when included in the composition in the form of a solvent dispersion.
- the solvent included in the nano-silica particle dispersion any solvent known in the art can be used without limitation, and the description of the solvent for the ⁇ hard coating layer (110)> can be applied as is, so description thereof will be omitted.
- the nano-silica particles may be included in an amount of 0.1 to 50 parts by weight relative to the total 100 parts by weight of the nano-silica particle dispersion in terms of ease of process, but is not limited thereto.
- the above nano-silica particles are preferably included in an amount of 0.1 to 20 parts by weight based on 100 parts by weight of the total composition for forming a low-refractive layer, and are more preferably included in an amount of 1 to 15 parts by weight from the viewpoint of compatibility and light-transmitting haze characteristics.
- the hard coating layer may be manufactured by a method known in the art.
- the thickness of the hard coating layer is not particularly limited, and may be, for example, 5 to 30 ⁇ m, and the thickness of the low-refractive-index layer may be 50 to 200 nm, and preferably 80 to 120 nm.
- the thickness is within the above range, it may be easy to control the reflectivity of the substrate layer including the hard coating film to 2 to 3%, and haze may be prevented, which may affect the optical characteristics of the image display device described later.
- the thickness of the low-refractive-index layer exceeds the above range and is thick, there is a disadvantage in that the reflectivity may increase.
- a hard coating film according to an embodiment of the present invention may be formed by coating a composition for forming a hard coating layer on a substrate and performing drying and UV curing steps to form a hard coating layer (121), and then coating a composition for forming a low-refractive layer on the hard coating layer (122) and then performing drying and UV curing steps in the same manner as the hard coating layer to form a low-refractive layer (122).
- the step of drying the above hard coating film can be performed by a heating means such as a hot plate, a hot air circulator, or an infrared furnace, and can be performed at a temperature of 50 to 150°C or 50 to 100°C.
- a heating means such as a hot plate, a hot air circulator, or an infrared furnace
- the step of curing the hard coating film is irradiated with active rays such as UV rays of 50 to 1000 mJ/cm 2 , preferably 200 to 800 mJ/cm 2 .
- active rays such as UV rays of 50 to 1000 mJ/cm 2 , preferably 200 to 800 mJ/cm 2 .
- the step of forming the hard coating layer (121) is performed primarily by weakly curing at a level of 50 to 600 mJ/cm 2
- the step of forming the low-refractive layer (122) is irradiated with UV at a strong light amount of 300 to 800 mJ/cm 2 , thereby further strengthening the adhesion between the low-refractive layer and the hard coating layer.
- a low-pressure mercury lamp a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, a metal halide lamp, an argon gas laser, etc.
- X-rays, electron rays, etc. can also be used.
- FIG. 1 is a diagram showing a laminated structure of a substrate layer according to an embodiment of the present invention.
- embodiments of the present invention provide a substrate layer (100) including the hard coating film (120) described above and an image display device including the same.
- a hard coating film (120) in which the above-described hard coating layer (121) and the low-refractive-index layer (122) are sequentially laminated may be formed on the substrate (110).
- the substrate layer (100) including the substrate (110) and the hard coating film (120) may be formed on the outermost surface according to the needs of the image display device, and may also be inserted into the interior of the image display device.
- the above-mentioned substrate (110) has the function of alleviating impact and preventing damage to the internal substrate when damage such as impact and/or scratch is applied to the entire surface of the substrate layer, and a material having a high tolerance for deformation energy is preferable, and examples thereof include polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, and polybutylene naphthalate; polyimide resins; acrylic resins; styrene resins such as polystyrene and acrylonitrile-styrene; polycarbonate resins; polylactic acid resins; polyurethane resins; polyolefin resins such as polyethylene, polypropylene, and ethylene-propylene copolymers; vinyl resins such as polyvinyl chloride and polyvinylidene chloride; polyamide resins; There are resins such as sulfone-based resins; polyether-etherketone-based resins; allylate-based resin
- the thickness of the substrate using the above polyimide-based resin can be applied without limitation, but since the thicker it is, the lower the folding performance, it is preferable to have a thickness of 30 to 100 ⁇ m in terms of folding properties, permeability, and durability.
- the above image display device includes various image display devices such as a liquid crystal display, an electroluminescence display, a plasma display, a field emission display, etc., and may be a flexible display device having flexibility and bending characteristics, but is not limited thereto.
- the substrate layer (100) according to the embodiments of the present invention that is, the hard coating laminate, acts to reduce reflectivity and improve mechanical properties through the above configuration, thereby preventing haze and controlling reflectivity to 2 to 3%, thereby implementing an image display device having excellent optical characteristics, a high initial water contact angle, and excellent durability such as scratch resistance and wear resistance.
- Manufacturing Example 1 Manufacturing of a composition for forming a hard coating layer
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low refractive layer of the above Manufacturing Example 2 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 3 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 4 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 5 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 6 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 7 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 8 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 2 is coated thereon to a thickness of 300 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the composition for forming a hard coating layer manufactured according to the above Manufacturing Example 1 is coated on a polyimide film (PI, 50 ⁇ m) to a thickness of 10 ⁇ m after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated to form a hard coating layer, and then the composition for forming a low-refractive layer of the above Manufacturing Example 9 is coated thereon to a thickness of 100 nm after curing, the solvent is dried and UV accumulated light of 500 mJ/cm 2 is irradiated under a nitrogen atmosphere, thereby manufacturing a substrate layer in which a hard coating film is laminated on a substrate.
- PI polyimide film
- the manufacturing examples, thickness of the coating, particle sizes of hollow silica particles and nano silica particles included in the low refractive index layer, and values calculated by applying the same to Equation 1, applied to Examples 1 to 3 and Comparative Examples 1 to 6, respectively, are as described in Table 1 below.
- Hard coating layer low refractive layer Equation 1 Manufacturing example Coating thickness ( ⁇ m) Manufacturing example Coating thickness (nm) Hollow silica particle average diameter (A, nm) Average particle diameter of nanosilica particles (B, nm)
- the water contact angle was measured at room temperature using a KRUSS contact angle measuring device DSA100 with a liquid droplet volume of 3 ⁇ l.
- the haze of the substrate layers of the above examples and comparative examples was measured using a haze meter (HM-2, Murakami Co., Ltd.).
- the substrate layers manufactured in the above examples and comparative examples were bonded to a black acrylic plate to eliminate back reflection, and then the reflectance was measured using an integrating sphere reflectance (CM-3700A, Konica Minolta).
- Comparative Example 3 in which a composition for forming a low-refractive layer did not include nano-silica particles was applied, and in Comparative Examples 1, 2, and 4 in which the value of Equation 1 was less than 90% or more than 150%, and in Comparative Example 5 in which the thickness of the low-refractive layer exceeded 200 nm, at least one of the results in the evaluation of the initial water contact angle, haze, reflectivity, and wear resistance was poor compared to the examples of the present invention, and Comparative Example 6 in which the composition for forming a low-refractive layer did not include a fluorine-based UV-curable functional group-containing compound had a particularly low initial water contact angle.
- Comparative Examples 1 to 6 that did not follow the examples of the present invention, a large number of scratches were observed, unlike the examples of the present invention.
- a hard coating film includes a low-refractive layer formed on a hard coating layer, and a composition forming the low-refractive layer includes a fluorine-containing UV-curable functional group-containing compound, hollow silica particles, and nano-silica particles, and the low-refractive layer has a thickness of 50 to 200 nm, and a ratio of the average particle diameter of the hollow silica particles to the average particle diameter of the nano-silica particles satisfies 90 to 150%, whereby a reflectivity of 2% or more and less than 3% can be achieved while maintaining excellent mechanical properties.
- the reflectance can be controlled to 2% or more and less than 3%.
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Abstract
Description
| 하드코팅층 | 저굴절층 | 식 1 (%) |
|||||
| 제조예 | 코팅두께 (㎛) |
제조예 | 코팅두께 (nm) |
중공실리카 입자 평균 입경 (A, nm) |
나노실리카 입자 평균 입경 (B, nm) |
||
| 실시예 1 | 제조예 1 | 10 | 제조예 2 | 100 | 60 | 85 | 141.7 |
| 실시예 2 | 제조예 1 | 10 | 제조예 3 | 100 | 60 | 85 | 141.7 |
| 실시예 3 | 제조예 1 | 10 | 제조예 4 | 100 | 50 | 45 | 90.0 |
| 비교예 1 | 제조예 1 | 10 | 제조예 5 | 100 | 60 | 12 | 20.0 |
| 비교예 2 | 제조예 1 | 10 | 제조예 6 | 100 | 60 | 45 | 75.0 |
| 비교예 3 | 제조예 1 | 10 | 제조예 7 | 100 | 60 | - | - |
| 비교예 4 | 제조예 1 | 10 | 제조예 8 | 100 | 60 | 100 | 166.7 |
| 비교예 5 | 제조예 1 | 10 | 제조예 2 | 300 | 60 | 80 | 133.3 |
| 비교예 6 | 제조예 1 | 10 | 제조예 9 | 100 | 60 | 80 | 133.3 |
| 초기수접촉각(°) | 헤이즈(%) | 반사율(%) | 내스크래치성 | 내마모성 | |
| 실시예 1 | 114 | 0.4 | 2.50 | ○ | ○ |
| 실시예 2 | 114 | 0.4 | 2.55 | ○ | ○ |
| 실시예 3 | 114 | 0.5 | 2.43 | ○ | ○ |
| 비교예 1 | 114 | 0.8 | 2.72 | X | X |
| 비교예 2 | 114 | 0.5 | 2.73 | X | X |
| 비교예 3 | 114 | 0.3 | 3.00 | X | X |
| 비교예 4 | 114 | 1.0 | 3.02 | X | X |
| 비교예 5 | 114 | 0.7 | 3.57 | X | X |
| 비교예 6 | 95 | 0.3 | 2.52 | X | X |
Claims (10)
- 하드코팅층; 및상기 하드코팅층 상에 형성된 저굴절층을 포함하고,상기 저굴절층은 저굴절층 형성용 조성물로 형성되며,상기 저굴절층 형성용 조성물은 불소계 UV 경화형 관능기 함유 화합물, 중공실리카 입자 및 나노실리카 입자를 포함하고,상기 저굴절층의 두께는 50 내지 200nm이며,하기 식 1의 값이 90 내지 150%인 것을 특징으로 하는, 하드코팅 필름:[식 1](B/A)*100(%)(상기 식 1에서,A는 저굴절층 형성용 조성물에 포함된 중공실리카 입자의 평균 입경이고,B는 저굴절층 형성용 조성물에 포함된 나노실리카 입자의 평균 입경이다.)
- 청구항 1에 있어서,상기 불소계 UV 경화형 관능기 함유 화합물은, 분자 내에 UV 경화형 관능기를 1 내지 6 개 포함하는, 하드코팅 필름.
- 청구항 1에 있어서,상기 하드코팅 필름의 반사율이 2% 이상 3% 미만인 것을 특징으로 하는, 하드코팅 필름.
- 청구항 1에 있어서,상기 하드코팅층 및 저굴절층은 폴리에스터계 수지, 폴리이미드계 수지, 아크릴계 수지, 스타이렌계 수지, 폴리카보네이트계 수지, 폴리락틱에시드 수지, 폴리우레탄계 수지, 폴리올레핀계 수지, 비닐계 수지, 폴리아미드계 수지, 설폰계 수지, 폴리에테르-에테르케톤계 수지, 알릴레이트계 수지, 셀룰로오스계 수지 및 상기 수지들의 혼합물로 형성된 이형 필름 중 선택되는 1종 이상의 기재 상에 형성되는, 하드코팅 필름.
- 청구항 1에 있어서,상기 저굴절층 형성용 조성물은, 투광성 수지, 개시제 및 용제로 이루어진 군에서 선택되는 1종 이상을 더 포함하는, 하드코팅 필름.
- 청구항 1에 있어서,상기 중공실리카 입자의 굴절률은 1.17 내지 1.40인 것을 특징으로 하는, 하드코팅 필름.
- 청구항 6에 있어서,상기 중공실리카 입자는 저굴절층 형성용 조성물 전체 100 중량부에 대하여 0.1 내지 20 중량부로 포함되는 것을 특징으로 하는, 하드코팅 필름.
- 청구항 1에 있어서,상기 나노실리카 입자의 평균 입경은 80 내지 130nm인 것을 특징으로 하는, 하드코팅 필름.
- 청구항 1에 있어서,상기 저굴절층 형성용 조성물은, 첨가제로서 레벨링제, 자외선 안정제 및 열 안정제로 이루어진 군에서 선택되는 1종 이상을 더 포함하는, 하드코팅 필름.
- 청구항 1 내지 9 중 어느 한 항에 따른 하드코팅 필름을 포함하는, 화상표시장치.
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| JP2025546313A JP2026506918A (ja) | 2023-02-09 | 2024-01-23 | ハードコーティングフィルムおよびこれを含む画像表示装置 |
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| KR101998311B1 (ko) * | 2018-01-10 | 2019-07-09 | 주식회사 씨엔피솔루션즈 | 반사방지 필름 |
| US20200040198A1 (en) * | 2018-08-02 | 2020-02-06 | Benq Materials Corporation | Hard coating layered optical film, polarizer comprising the same, and image display comprising the hard coating layered optical film and/or the polarizer comprising the same |
| KR20210039221A (ko) * | 2019-10-01 | 2021-04-09 | 동우 화인켐 주식회사 | 하드코팅 필름 및 이를 포함하는 화상표시장치 |
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| KR102444443B1 (ko) | 2021-08-25 | 2022-09-20 | 에스케이이노베이션 주식회사 | 플렉서블 윈도우 커버 필름용 하드코팅 조성물, 이로부터 얻어지는 하드코팅층 및 이를 포함하는 플렉서블 윈도우 커버 필름. |
-
2023
- 2023-02-09 KR KR1020230017290A patent/KR20240124591A/ko active Pending
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2024
- 2024-01-23 CN CN202480011160.8A patent/CN120641510A/zh active Pending
- 2024-01-23 JP JP2025546313A patent/JP2026506918A/ja active Pending
- 2024-01-23 WO PCT/KR2024/001060 patent/WO2024167170A1/ko not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120044286A (ko) * | 2009-07-29 | 2012-05-07 | 니폰 가야꾸 가부시끼가이샤 | 감광성 수지 조성물, 그것을 사용한 반사방지 필름 및 반사방지 하드코트 필름 |
| KR20140140139A (ko) * | 2013-05-23 | 2014-12-09 | 에스케이이노베이션 주식회사 | 반사방지용 코팅조성물 및 이를 이용한 광학 필름 |
| KR101998311B1 (ko) * | 2018-01-10 | 2019-07-09 | 주식회사 씨엔피솔루션즈 | 반사방지 필름 |
| US20200040198A1 (en) * | 2018-08-02 | 2020-02-06 | Benq Materials Corporation | Hard coating layered optical film, polarizer comprising the same, and image display comprising the hard coating layered optical film and/or the polarizer comprising the same |
| KR20210039221A (ko) * | 2019-10-01 | 2021-04-09 | 동우 화인켐 주식회사 | 하드코팅 필름 및 이를 포함하는 화상표시장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2026506918A (ja) | 2026-02-27 |
| CN120641510A (zh) | 2025-09-12 |
| KR20240124591A (ko) | 2024-08-19 |
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