KR20120009608A - Coating Composition for Anti-Glare, Anti-Glare Film using the Coating Composition, Polarizing Plate and Display Device - Google Patents
Coating Composition for Anti-Glare, Anti-Glare Film using the Coating Composition, Polarizing Plate and Display Device Download PDFInfo
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- KR20120009608A KR20120009608A KR1020100069626A KR20100069626A KR20120009608A KR 20120009608 A KR20120009608 A KR 20120009608A KR 1020100069626 A KR1020100069626 A KR 1020100069626A KR 20100069626 A KR20100069626 A KR 20100069626A KR 20120009608 A KR20120009608 A KR 20120009608A
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
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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
- 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
- C09D7/63—Additives non-macromolecular organic
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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
- C09D7/68—Particle size between 100-1000 nm
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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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
- G02F1/133528—Polarisers
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- Nanotechnology (AREA)
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- Surface Treatment Of Optical Elements (AREA)
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Abstract
The present invention relates to an anti-glare hard coating composition, an anti-glare film, a polarizing plate, and a display device using the same.
The anti-glare hard coating composition according to the present invention comprises a (meth) acrylate compound, a photoinitiator, fine particles, a fluidity regulator and a solvent.
The anti-glare hard coating composition according to the present invention can suppress the sedimentation of the fine particles by including the fine particles and the flow control agent, and thus, when applied to the production of the anti-glare film, a uniform coating is made, and the anti-glare film prepared by using the It has excellent surface smoothness and uniformly scatters the light transmitted through the antiglare layer, thereby realizing excellent total light transmittance, antiglare property, hardness, scratch resistance, and transmission sharpness. Therefore, the anti-glare film may be usefully applied to the polarizing plate and the display device.
Description
The present invention relates to an anti-glare hard coating composition, an anti-glare film, a polarizing plate, and a display device using the same.
The anti-glare film has a function of reducing reflection of external light by using diffuse reflection by surface protrusions, and various display panels such as liquid crystal display (LCD), plasma display (PDP), CRT, and electroluminescent display (EL). It is used for the purpose of preventing the reduction of the contrast due to the reflection of external light or the deterioration of the visibility of the display due to the reflection of the image.
The anti-glare film described above can be produced by various methods. In general, the antiglare film is coated with an ultraviolet curable resin in which fine particles having a predetermined particle diameter are dispersed on a transparent substrate, dried, and then irradiated with ultraviolet rays to cure, thereby forming random irregularities on the surface by the fine particles. Is being manufactured.
However, the above method is difficult to uniformly disperse the fine particles in the ultraviolet curable resin, and thus there is a problem that the fine particles are not evenly distributed throughout the film even in the antiglare film produced using the ultraviolet curable resin. Also. Aggregation of microparticles | fine-particles etc. are easy to generate | occur | produce in the process of manufacturing an ultraviolet curable resin, and stain | spatter etc. may arise by this. In addition, the fine particles settle quickly in the solution may cause various types of coating failure. When using an anti-glare film having such a disadvantage in a display device such as a high-precision liquid crystal panel, there is a problem in that sufficient visibility is not obtained due to low total light transmittance, transparency of transparency and anti-glare property.
Therefore, the present invention not only has excellent surface smoothness by suppressing the sedimentation of fine particles to make a uniform coating, but also anti-glare property, total light transmittance, hardness, scratch resistance, and transmission sharpness of the anti-glare film prepared using the same. It is to provide a hard coating composition.
Another object of the present invention is to provide an antiglare film having excellent surface smoothness and excellent total light transmittance, anti-glare property, hardness, scratch resistance, and transmittance transparency as prepared by using the anti-glare hard coating composition.
Still another object of the present invention is to provide a polarizing plate having excellent anti-glare provided with the anti-glare film.
Still another object of the present invention is to provide a display device having excellent anti-glare property provided with the anti-glare film.
In order to achieve the above object, the present invention provides an anti-glare hard coating composition comprising a (meth) acrylate compound, a photoinitiator, fine particles, a flow control agent and a solvent.
The flow control agent may include at least one selected from the group consisting of a modified urea compound, a urea-modified polyurethane compound, and a polyhydroxycarboxylic acid amide compound.
The (meth) acrylate compound may include a polyfunctional (meth) acrylate oligomer and a (meth) acrylate monomer.
It is preferable that the said polyfunctional (meth) acrylate oligomer contains the compound represented by following formula (1).
[Formula 1]
(In Formula 1, Y is an aliphatic or aromatic hydrocarbon containing or not containing 2 to 80 heteroatoms including 2 to 20 (meth) acrylate functional groups, and R is linear or branched. Or an aliphatic or aromatic hydrocarbon containing or not containing a cyclic C3-C50 hetero atom, and n is an integer of 1 to 10.)
The anti-glare hard coating composition may include 0.5 to 30 parts by weight of the fine particles and 0.01 to 1 part by weight of the flow control agent based on 100 parts by weight of the total.
The fine particles are preferably at least one selected from the group consisting of organic particles or inorganic particles.
The organic particles may include at least one selected from the group consisting of melamine beads, acrylic beads, acrylic-styrene beads, polycarbonate beads, polyethylene beads, and vinyl chloride beads.
The inorganic particles may include at least one selected from the group consisting of calcium bicarbonate, light calcium carbonate, barium sulfate, zinc phosphate, silica, alumina and talc.
It is preferable that the said microparticles | fine-particles have a particle size of 0.1-10 micrometers.
In order to achieve the other object of the present invention, the present invention provides an anti-glare film comprising an anti-glare layer formed by applying and then curing the anti-glare hard coating composition according to the present invention on one side or both sides of the substrate. .
In order to achieve another object of the present invention, the present invention provides a polarizing plate characterized in that the anti-glare film is provided.
In order to achieve the another object of the present invention, the present invention provides a display device characterized in that the anti-glare film is provided.
The anti-glare hard coating composition according to the present invention can suppress the sedimentation of the fine particles by including the fine particles and the flow control agent, and thus can be made uniform coating when applied to the production of anti-glare film anti-glare film produced using the same Silver has excellent surface smoothness to uniformly scatter light transmitted through the antiglare layer, thereby realizing excellent total light transmittance, antiglare property, hardness, scratch resistance, and transmission sharpness. Therefore, the anti-glare film may be usefully applied to the polarizing plate and the display device.
Hereinafter, the present invention will be described in detail.
The anti-glare hard coating composition according to the present invention includes a (meth) acrylate compound, a photoinitiator (C), fine particles (D), a fluidity regulator (E) and a solvent (F). The (meth) acrylate compound may include a polyfunctional (meth) acrylate oligomer (A) and a (meth) acrylate monomer (B). Each component is described in detail as follows.
Multifunctional (meth) acrylate oligomer (A)
The anti-glare hard coating composition according to the present invention includes a (meth) acrylate compound, and the (meth) acrylate compound may include a polyfunctional (meth) acrylate oligomer.
Preferably the multifunctional (meth) acrylate oligomer may comprise a compound represented by the following formula (1).
[Formula 1]
(In Formula 1, Y is an aliphatic or aromatic hydrocarbon containing or not containing 2 to 80 heteroatoms including 2 to 20 (meth) acrylate functional groups, and R is linear or branched. Or an aliphatic or aromatic hydrocarbon containing or not containing a cyclic C3-C50 hetero atom, and n is an integer of 1 to 10.)
The polyfunctional (meth) acrylate oligomer represented by Formula 1 has a lower viscosity than other oligomers having the same molecular weight, and shrinkage rate when mixed with other (meth) acrylate compounds, especially (meth) acrylate monomers, for photocuring. It has the advantage of being very suitable for hard coating antiglare film because it can maintain high hardness while being small.
The polyfunctional (meth) acrylate oligomer represented by Formula 1 may be prepared by reacting a (meth) acrylate monomer containing a hydroxy group with an organic compound having two or more isocyanate groups in a molecule.
The organic compound having two or more isocyanate groups in the molecule may be, for example, 1,4-diisocyanatobutane, 1,6-diisocyanatohexane, 1,8-diisocyanatooctane, 1,12-diisocyanato Dodecane, 1,5-diisocyanato-2-methylpentane, trimethyl-1,6-diisocyanatohexane, 1,3-bis (isocyanatomethyl) cyclohexane, trans-1,4-cyclohexenedi Isocyanate, 4,4'-methylenebis (cyclohexyl isocyanate), isophorone diisocyanate, toluene-2,4-diisocyanate, toluene-2,6-diisocyanate, xylene-1,4-diisocyanate, tetramethyl Xylene-1,3-diisocyanate, 1-chloromethyl-2,4-diisocyanate, 4,4'-methylenebis (2,6-dimethylphenylisocyanate), 4,4'-oxybis (phenylisocyanate) , Trifunctional isocyanates and trimethanepropanol adducts derived from hexamethylene diisocyanate At least one selected from the group consisting of isocyanate-endian can be used.
Examples of the (meth) acrylate monomer containing the hydroxy group include 2-hydroxyethyl (meth) acrylate, 2-hydroxyisopropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, At least one selected from the group consisting of caprolactone ring-opening hydroxyacrylate, pentaerythritol tri / tetra (meth) acrylate mixture, and dipentaerythritol penta / hexa (meth) acrylate mixture can be used.
The polyfunctional (meth) acrylate oligomer is preferably contained 5 to 60 parts by weight based on 100 parts by weight of the total anti-glare hard coating composition. When the content of the polyfunctional (meth) acrylate oligomer is included in less than 5 parts by weight based on the above standards, it is difficult to expect a sufficient hardness improvement effect of the anti-glare film prepared using the anti-glare hard coating composition, and includes more than 60 parts by weight. When curling may be generated in the anti-glare film prepared using the anti-glare hard coating composition.
(Meth) acrylate monomer (B)
The anti-glare hard coating composition according to the present invention may include a (meth) acrylate compound, and the (meth) acrylate compound may include a (meth) acrylate monomer. The (meth) acrylate monomer can complement the shrinkage and hardness of the multifunctional (meth) acrylate when used in combination with the multifunctional (meth) acrylate.
Specifically, the (meth) acrylate monomer is dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, ditrimethyl All propane tetra (meth) acrylate, trimethylolpropane 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-butanedioldi (meth) acrylate, 1,4-butanedioldi (meth) acrylate, 1,6-hexanedioldi (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, hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, isobornol With (meth) acrylate, isooctyl (meth) acrylate, iso-decyl (meth) acrylate, stearyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate and phenoxyethyl (meth) acrylate At least one selected from the group consisting of can be used.
In particular, the (meth) acrylate monomer may preferably be a monofunctional (meth) acrylate monomer in view of shrinkage or hardness.
The (meth) acrylate monomer is preferably included 5 to 60 parts by weight based on 100 parts by weight of the total anti-glare hard coating composition. When the content of the (meth) acrylate monomer is included in less than 5 parts by weight based on the above standards, there is a problem that curling occurs in the anti-glare film produced using the anti-glare hard coating composition, contained in more than 60 parts by weight and anti-glare There is a problem that it is difficult to expect the effect of improving the hardness of the antiglare film produced using the hard coating composition.
Photoinitiator (C)
The photoinitiator can be used without limitation so long as it is used in the art. Preferably, the photoinitiator may be used at least one selected from the group consisting of hydroxy ketones, amino ketones, and hydrogen decyclic photoinitiator.
Specifically, as the photoinitiator, benzophenone, 2-methyl-1- [4- (methylthio) phenyl] 2-morpholine propane-1-one, diphenyl ketone benzyl dimethyl ketal, 2-hydroxy-2-methyl- 1-phenyl-1-one, 4-hydroxycyclophenylketone, dimethoxy-2-phenylacetophenone, anthraquinone, fluorene, triphenylamine, carbazole, 3-methylacetophenone, 4-knoloacetophenone At least one selected from the group consisting of 4,4-dimethoxyacetophenone, 4,4-diaminobenzophenone, and 1-hydroxycyclohexylphenylketone can be used. However, the photoinitiator of the present invention is not limited to those exemplified above.
The photoinitiator is preferably included 0.1 to 10 parts by weight based on 100 parts by weight of the total anti-glare hard coating composition. When the content of the photoinitiator is included in less than 0.1 parts by weight based on the reference, the curing rate of the anti-glare hard coating composition is slow, and when it is included in more than 10 parts by weight cracks are generated in the anti-glare layer formed using the anti-glare hard coating composition There is a problem.
Particulates (D)
The fine particles are included to improve the anti-glare properties, and may be used without limitation as long as they can be clearly implemented without excellent anti-glare effect and high definition display quality.
The fine particles may be organic particles or inorganic particles.
The organic particles may be at least one selected from the group consisting of melamine beads, acrylic beads, acrylic-styrene beads, polycarbonate beads, polyethylene beads, and vinyl chloride beads.
The inorganic particles may be at least one selected from the group consisting of calcium bicarbonate (bicarbonate), light calcium carbonate, barium sulfate, silica and alumina.
The fine particles preferably have a particle size of 0.1 μm to 10 μm, more preferably 0.5 μm to 7 μm, and even more preferably 1 μm to 5 μm. When the particle size diameter of the fine particles is less than 0.1 μm, it is difficult to obtain a satisfactory light diffusing effect, and there is a disadvantage in that light diffusing property is lowered. In addition, when the particle size diameter of the fine particles is more than 10 μm, the background of the screen may be rough and the image contrast may be deteriorated.
It is preferable that the fine particles use amorphous particles rather than spherical to further improve the anti-glare property. The amorphous particles have a variety of forms (plate-like, spherical, square, etc.) and these crystalline structures form agglomerates due to coagulation with each other, so a process of atomization and separation is required. The process of atomization and separation can be carried out using a grinder such as a ball mill, and then filtered through a mesh of a constant size to obtain amorphous particles having a constant particle size.
The fine particles are preferably contained in an amount of 0.5 to 30 parts by weight based on 100 parts by weight of the total anti-glare hard coating composition. When the content of the fine particles is included in less than 0.5 parts by weight based on the above, it is difficult to implement a sufficient anti-glare effect, when included in more than 30 parts by weight the transmission sharpness is significantly reduced.
Rheology modifier (E)
The flow control agent is included to suppress the sedimentation of the fine particles and to improve workability.
The rheology control agent may use at least one selected from the group consisting of a modified urea compound, a urea-modified polyurethane compound, and a polyhydroxycarboxylic acid amide compound.
Compounds having the urea-urethane structure may be prepared by a conventional manufacturing method.
For example, the compound having the urea-urethane structure is a first reaction of reacting an excess of diisocyanate with a polyol to obtain a double NCO terminated urethane prepolymer, and a mixture of the double NCO terminated urethane prepolymer obtained above with an excess of diisocyanate. Can be used by reacting with a mixture of primary monoamine and primary diamine.
Examples of the modified urea compound include commercially available BYK-410, BYK-E410, BYK-411, BYK-E411, BYK-420, and BYK-E420 as the commercially available products, and the urea-modified poly Commercially available urethane compounds include BYK-425, BYK-428, BYK-430, BYK-431, and the like, and commercially available products of commercially available polyhydroxycarboxylic acid amide compounds. BYK-405 of Biwaike-Khemisa etc. are mentioned. These can be used individually or in combination of 2 or more, respectively.
The flow control agent is preferably included 0.01 to 1 parts by weight based on 100 parts by weight of the total anti-glare hard coating composition. When the content of the fluidity regulator is included less than 0.01 parts by weight based on the settling inhibitory effect of the fine particles is not sufficiently obtained when the anti-glare hard coating composition is applied to the production of the anti-glare film is not made uniform coating, 1 When included in an amount greater than the weight, the plasticity may be improved, and problems with time such as viscosity increase of the solution may occur.
Solvent (F)
The anti-glare hard coating composition of the present invention includes a solvent. The solvent is not particularly limited, and any solvent can be used as long as it is known in the art.
Preferably, the solvent is exemplified by alcohols (methanol, ethanol, isopropanol, butanol, etc.), ketones (methyl ethyl ketone, methyl butyl ketone, methyl isobutyl ketone, diethyl ketone, dipropyl ketone, cyclohexanone, etc.). can do. The solvents may be used alone or in combination of two or more.
The solvent is preferably included 10 to 85 parts by weight based on 100 parts by weight of the total anti-glare hard coating composition. When the content of the solvent is included in less than 10 parts by weight based on the above standard, the viscosity of the anti-glare hard coating composition is high workability, when included in more than 85 parts by weight time in the drying and curing process of the anti-glare hard coating composition There is a problem that it takes a lot of economic and poor.
In addition to the above components, the anti-glare hard coating composition of the present invention may further include at least one selected from the group consisting of antioxidants, UV absorbers, light stabilizers, leveling agents, surfactants, and antifouling agents, as necessary.
The present invention provides an anti-glare film prepared using the anti-glare hard coating composition of the present invention described above. The anti-glare film of the present invention includes an anti-glare layer formed by coating and then curing the anti-glare hard coating composition according to the present invention on one or both surfaces of the transparent substrate.
As the transparent base material, any film can be used as long as transparency is a film. For example, the transparent substrate may include cycloolefin derivatives having a unit of a monomer including a cycloolefin such as norbornene or a polycyclic norbornene monomer, cellulose (diacetyl cellulose, triacetyl cellulose, acetyl cellulose butyrate, iso Butyl ester cellulose, propionyl cellulose, butyryl cellulose, acetyl propionyl cellulose), ethylene-vinyl acetate copolymer, polyester, polystyrene, polyamide, polyetherimide, polyacryl, polyimide, polyethersulfone, polysulfone, Polyethylene, polypropylene, polymethylpentene, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetal, polyether ketone, polyether ether ketone, polyether sulfone, polymethyl methacrylate, polyethylene terephthalate, poly Butylene Terephthalate, Paul It may be selected from selected from ethylene terephthalate, polycarbonate, polyurethane, epoxy, can be used an undrawn, uniaxially or biaxially stretched film. Preferably, a uniaxial or biaxially stretched polyester film having excellent transparency and heat resistance, but a triacetyl cellulose film having no transparency and optically anisotropy may be used.
Preferably the thickness of the said transparent base material is about 8-1000 micrometers, More preferably, it is 40-100 micrometers.
The coating of the anti-glare hard coating composition may suitably use a known method such as die coater, air knife, reverse roll, spray, blade, casting, gravure, spin coating.
The coating thickness of the anti-glare hard coating composition is preferably 3 to 50 µm, more preferably 5 to 30 µm, and most preferably 10 to 25 µm. After application, the hard coating composition is dried by evaporation of volatiles for 10 seconds to 1 hour, preferably 30 seconds to 10 minutes at a temperature of 30 ~ 150 ℃, and then cured by irradiation with UV light. The irradiation amount of UV light is about 0.01-10 J / cm <2> , Preferably it is 0.1-2J / cm <2> .
The present invention provides a polarizing plate with an antiglare film according to the present invention described above. That is, the polarizing plate of the present invention is characterized in that the anti-glare film according to the present invention is formed by laminating on at least one surface of a polarizing plate including a general polarizer or the general polarizer.
The general polarizer is a film uniaxially stretched by adsorbing a dichroic substance such as iodine or a dichroic dye to a hydrophilic polymer film such as a polyvinyl alcohol film or an ethylene-vinyl acetate copolymerized partial saponified film, for example. Polyene oriented films such as a dehydrated product and a dechlorinated product of polyvinyl chloride may be used. Preferably it may be made of a dichroic material such as polyvinyl alcohol-based film and iodine. Although the thickness of these polarizers is not specifically limited, Generally, it is about 5-80 micrometers.
The general polarizing plate may be provided with a protective film on at least one surface of the general polarizer. The protective film may be preferably applied excellent in transparency, mechanical strength, thermal stability, moisture shielding, isotropy and the like. For example, the protective film may be a polyester film such as polyethylene terephthalate, polyethylene isophthalate, polybutylene terephthalate or the like; Cellulose films such as diacetyl cellulose and triacetyl cellulose; Polycarbonate film; Acrylic films such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene films such as polystyrene and acrylonitrile-styrene copolymers; Polyolefin-based films such as polyethylene, polypropylene, cyclo- or polyolefin-based films having a norbornene structure, and ethylene propylene copolymers; Polyimide film; Polyether sulfone-based film; Sulfone type films and the like can be used. Among the protective films exemplified above, a triacetyl cellulose film may be preferably used in view of excellent transparency and no optically anisotropy. The thickness of the protective film is not particularly limited, and is preferably 8 to 1000 µm, more preferably 40 to 100 µm.
The present invention provides a display device with an antiglare film according to the present invention described above. As an example, the display apparatus which concerns on this invention can be manufactured by embedding the above-mentioned polarizing plate with an anti-glare film in a display apparatus. Moreover, the anti-glare film of this invention can also be made to adhere to the window of a display apparatus. The anti-glare film of the present invention can be preferably used in reflective, transmissive, semi-transmissive LCD or LCD of various driving methods such as TN type, STN type, OCB type, HAN type, VA type, and IPS type. In addition, the anti-glare film of the present invention can be preferably used for various display devices such as a plasma display, a field emission display, an organic EL display, an inorganic EL display, and an electronic paper.
Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention, it is apparent to those skilled in the art that the scope of the present invention is not limited to these examples.
Synthesis Example 1 Synthesis of Polyfunctional (meth) acrylate Oligomer
75 parts by weight of trifunctional isocyanate (N3300, Bayer) derived from hexamethylene diisocyanate, 425 parts by weight of dipentaerythritol penta / hexaacrylate mixture (KAYARAD, Nippon Kayakusa), dibutyltin dilaurate (FASCAT 4202, Ake Martha) 0.5 part by weight and 0.25 part by weight of methoxyhydroquinone (HQMME, Eastman) were charged at room temperature, and the reaction temperature was raised to 110 ° C while stirring. The reaction was terminated at 110 ° C. for 10 hours and completely terminated when 2260 cm −1 , the characteristic peak of isocyanate in the infrared spectroscopy, disappeared completely.
≪ Example 1 >
25 parts by weight of the polyfunctional (meth) acrylate oligomer obtained in Synthesis Example 1, 5 parts by weight of amorphous silica particles (Tospearl240, Momentive) having an average diameter of 4 μm, pentaerythritol triacrylate (M340, Miwon Corporation) 12.7 Parts by weight, 7 parts by weight of isobornol acrylate (IBXA, Co., Ltd.), 0.3 part by weight of fluidity regulator (BYK-410, B-K-Kemi), 8 parts by weight of cyclohexanone (Aldrich), toluene (Aldrich) ) 39 parts by weight, 1-hydroxycyclohexylphenyl ketone (I-184, Ciba) 2 parts by weight, 2-methyl-1- [4- (methylthio) phenyl] 2-morpholinepropanone-1 (I -907, Ciba) 0.5 parts by weight, 0.3 parts by weight of modified silicone oil (DisperBYK2008, BK), a dispersant, and 0.2 parts by weight of modified silicone oil (BYK371, BK), a leveling agent, and stirred for 30 minutes A hard hard coating composition was prepared.
<Examples 2 to 10, Comparative Examples 1 and 2>
Except for changing the composition and composition ratio of each component as shown in Table 1, was carried out in the same manner as in Example 1 to prepare an anti-glare hard coating composition.
Fluidity regulator: BYK405, BYK410, BYK411, BYK425, BYK430
Organic particle | grains (a): Melamine particle (3 micrometers, skisei chemical)
Organic particle | grains (b): Polymethyl methacrylate polystyrene particle (2-4 micrometers, skisei chemical)
Inorganic Particles (a): Amorphous Silica Particles (Momentive)
Inorganic particles (b): average particle diameter 2 μm barium sulfate particles (Maruo calcium)
Inorganic particle (c): Cubic average particle diameter 5 micrometers calcium carbonate particle (Maruo calcium)
(Meth) acrylate monomer (a): pentaerythritol triacrylate (M340, Miwon Corporation)
(Meth) acrylate monomer (b): isobornol acrylate (IBXA, a public company)
Solvent (a): cyclohexanone (Aldrich)
Solvent (b): toluene (Aldrich)
I-184: 1-hydroxycyclohexylphenyl ketone (Shiba Corporation)
I-907: 2-methyl-1- [4- (methylthio) phenyl] 2-morpholinepropane-1-one (Shiba Corporation)
DisperBYK2008: Modified Silicone Oil (Bikei Kay)
BYK371: modified silicone oil (by WEI Kay)
Experimental Example
The composition of Examples and Comparative Examples was applied to a cellulose triacetate transparent substrate having a thickness of 80 μm using a gravure coater, dried at 80 ° C. for 1 minute, and cured by UV irradiation to form an antiglare layer having a thickness of 4 μm. An antiglare film was prepared. The physical properties of the antiglare film were measured as follows, and the results are shown in Table 2 below.
(1) surface smoothness
The coated surface of the anti-glare film was observed in the direction of inclination 20-30 degrees in the light of electric light, and the presence or absence of aggregation (microscopic) of the uniformity of the surface layer was confirmed.
A: There is no micro aggregation in a surface layer, and it is uniform.
B: Microscopic aggregation is seen in the surface layer but is very slight.
C: Microscopic aggregation is remarkable in the surface layer.
(2) particle settling
The solution prepared from Examples and Preparation Examples was filled in a 30 cm mass cylinder to an appropriate position, and after 12 hours, the length was measured using a ruler as much as the settled position.
(3) total light transmittance and haze
The total anti-transmittance and the haze of the anti-glare film were measured using a spectrophotometer (HZ-1, Suga, Japan).
(4) anti-glare
The said anti-glare film was bonded to one surface of the PVA polarizer, and the general TAC film (thickness 80 micrometers) was bonded to the other side, and the polarizing plate was produced. After bonding the prepared polarizing plate to the glass, the image reflected was visually observed as follows.
○: Good anti-glare, Δ: Anti-glare moderate, X: Poor anti-glare
(5) Transmission sharpness
The antiglare film transmission sharpness was visually evaluated as follows.
(Circle): Good transmission sharpness, (DELTA): Good transmission sharpness, X: Bad transmission sharpness
(6) pencil hardness
The hard coating layer of the prepared hard coating film was subjected to a 500g load with a pencil hardness tester (PHT, manufactured by Korea Stone Industries, Inc.), and the pencil hardness was measured. The pencil was made 5 times per pencil hardness using Mitsubishi products. If there were two or more gases, it was determined to be defective, and pencil hardness was indicated by a pencil before the failure occurred.
Kiss: 0 OK
Kiss: 1 OK
Ges: 2 or more NG
(7) scratch resistance
Scratch resistance was tested by reciprocating 10 times under 1 kg / (2 cm × 2 cm) using a steel wool tester (WT-LCM100, manufactured by Korea Protec).
Steel wool used # 0000.
A: 0 scratches
A ': 1 to 10 scratches
B: 11-20 scratches
C: 21-30 scratches
D: 31 or more scratches
As shown in Table 2, in the case of adding the fluidity regulator to the present invention, it can be seen that the settling properties are clearly different from those of the comparative examples without addition, and the coating properties are remarkably good. In addition, in the case of the embodiment it can be seen that can be obtained significantly improved anti-glare and transmission sharpness, hardness and scratch resistance characteristics compared to the comparative example.
Claims (12)
[Formula 1]
(In Formula 1, Y is an aliphatic or aromatic hydrocarbon containing or not containing 2 to 80 heteroatoms including 2 to 20 (meth) acrylate functional groups, R is linear, branched Or an aliphatic or aromatic hydrocarbon containing or without a cyclic C3-C50 hetero atom, n is an integer from 1 to 10.)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100069626A KR20120009608A (en) | 2010-07-19 | 2010-07-19 | Coating Composition for Anti-Glare, Anti-Glare Film using the Coating Composition, Polarizing Plate and Display Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100069626A KR20120009608A (en) | 2010-07-19 | 2010-07-19 | Coating Composition for Anti-Glare, Anti-Glare Film using the Coating Composition, Polarizing Plate and Display Device |
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| KR20120009608A true KR20120009608A (en) | 2012-02-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810555A (en) * | 2018-12-21 | 2019-05-28 | 宁波激智科技股份有限公司 | The hardened layer coating fluid and a kind of cured film of a kind of high rigidity, anti-dazzle |
| EP3892695A4 (en) * | 2018-12-07 | 2022-08-31 | Kolon Industries, Inc. | Resin composition for anti-glare coating and anti-glare coating film prepared thereby |
-
2010
- 2010-07-19 KR KR1020100069626A patent/KR20120009608A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3892695A4 (en) * | 2018-12-07 | 2022-08-31 | Kolon Industries, Inc. | Resin composition for anti-glare coating and anti-glare coating film prepared thereby |
| CN109810555A (en) * | 2018-12-21 | 2019-05-28 | 宁波激智科技股份有限公司 | The hardened layer coating fluid and a kind of cured film of a kind of high rigidity, anti-dazzle |
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