KR100831497B1 - Manufacturing method for glare reducing complementary film - Google Patents

Abstract

The present invention relates to a method for preparing a high resolution anti-glare compensation film and a compensation film prepared by the above method, and more particularly, to a coating composition prepared by mixing an ultraviolet curable resin, an inorganic oxide, a polymer bead, and the like on a top of a polarizing film. It relates to a method for producing a high resolution anti-glare compensation film to reduce the phenomenon of high definition by coating directly on the compensation film is located and a compensation film produced by the above method.

High resolution anti-glare compensation film according to the present invention and a method for manufacturing the same is a polymer bead directly mixed with a metal oxide, such as silica particles used in the prior art directly coated on a compensation film or a retardation film, a high resolution of the anti-glare film consisting of only metal oxide In addition to minimizing the reduction effect and obtaining a higher resolution display image quality, it is economically advantageous because the existing film can be used as it is by coating the compensation film located on the top of the polarizing film.

Anti-glare, hard coating, compensation film

Description

Manufacturing method of high resolution anti-glare compensation film {MANUFACTURING METHOD FOR GLARE REDUCING COMPLEMENTARY FILM}

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Figure 4 is a graph showing the transmittance of the film produced according to the present invention and the film produced according to the comparative example.

      5 is a graph showing the surface reflectance of the film produced according to the present invention and the film produced according to the comparative example.

The present invention relates to a method for preparing a high resolution anti-glare compensation film and an anti-glare compensation film prepared by the above method, and more particularly, to a coating composition prepared by mixing an inorganic oxide, a polymer bead, an ultraviolet curable resin, and the like. The present invention relates to a high resolution anti-glare compensation film and a method for manufacturing the same, which are provided by directly coating a compensation film positioned on the top thereof to impart excellent anti-glare properties without degrading the display quality of the liquid crystal display.

When light is incident on the screen from the outside in a display of a CRT or a liquid crystal display, there is a problem in that it is difficult to see the image due to the reflection of light.

In order to solve such a problem, an antiglare treatment is performed to roughen the surface of a hard coating film or various protective hard coating films used in a polarizing plate. There is a method of roughening the surface and a method of incorporating a filler into a hard coating agent for forming a hard coating layer.

In general, the anti-glare film used is a form which realizes anti-glare property by forming irregularities on the surface, but such a shape causes a property of lowering the display quality of the liquid crystal display.

Japanese Patent Laid-Open Publication No. 1999-286083 discloses an anti-glare film in which a hard coating layer composed mainly of fine particles and a hard coating resin is formed on a transparent base film. However, there is a problem in that the hardness of the hard coat layer described in the above publication cannot be exhibited.

Also, Japanese Patent Publication No. 2001-194504 discloses an antireflection film formed by laminating a hard coat coating layer, a metal alkoxide and an antireflection thin film layer composed mainly of a metal alkoxide and a hydrolyzate thereof on at least one side of a plastic film. However, the present invention has improved the problems of hardness and scratch resistance, but there is a problem that the fine particles are embedded in the hard coating layer can not exhibit sufficient anti-glare function.

The present invention is to solve the above problems, in order to impart anti-glare property of the anti-glare compensation film containing fine particles made of inorganic particles and polymer beads and maintaining high-definition anti-glare and stable optical properties and excellent scratch resistance Its purpose is to provide a manufacturing method and an anti-glare compensation film prepared by the above method.

Hereinafter, a method of manufacturing a high resolution anti-glare compensation film and an anti-glare compensation film prepared by the above method will be described in detail.

The present invention provides a method for producing an anti-glare compensation film, comprising: laminating a compensation film or a retardation film on the polarizer; Preparing an antiglare composition by mixing antiglare particles, a dispersant, and a leveling agent such as an ultraviolet curable resin, a curing agent, an inorganic particle, or a polymer organic particle; An antiglare layer coating step of forming an antiglare layer by coating the antiglare composition on the compensation film or the retardation film by an inline coating method; And a curing step of photocuring the polarizing film including the antiglare layer. The anti-reflection layer may be further coated on the anti-glare layer, wherein the inorganic particles are SiO ₂ , TiO ₂ , and the organic particles are polycarbonate, polymethylmethacrylate, polystyrene, polyethylene terephthalate, poly At least one of the cycloolefins. It is preferable that the particle diameters of the said anti-glare microparticles | fine-particles are 0.1 micrometer-10 micrometers, and it is more preferable that they are 0.5 micrometer-7 micrometers. In addition, in the anti-glare hard coating compensation film manufacturing method according to the present invention, the anti-glare hard coating compensation film is characterized in that it is composed of a polarizer, a compensation film or a retardation film, the anti-glare layer from the lower end. At this time, the thickness of the antiglare coating layer is preferably 1㎛ to 15㎛, more preferably 3㎛ to 9㎛. Even more preferred is 5 μm to 7 μm.

The high resolution anti-glare compensation film and a method for manufacturing the same according to the present invention display a liquid crystal display by coating a coating composition prepared by mixing an inorganic oxide, a polymer bead, an ultraviolet curable resin, and the like directly on a compensation film positioned on the top of the polarizing film. Provides excellent anti-glare properties without degrading the picture quality.

(1) Method of manufacturing anti-glare compensation film

In order to manufacture a high resolution anti-glare compensation film according to the present invention, the following coating composition is coated on top of a polarizing film including a polarizer having a compensation film attached thereto by applying an in-line method. The head may be appropriately selected from micro gravure, gravure, die, cap, comma, knife, spray, spin coating and the like according to the characteristics of the composition.

After the coating step as described above, the coated compensation film may be dried and cured to obtain a high resolution anti-glare hard coated compensation film.

(i) transparent support

The polarizing film is composed of a polarizer functioning to polarize and a transparent protective layer to protect the polarizer. Although the thickness in particular of a polarizer is not restrict | limited, Usually, they are 0.1 micrometer-100 micrometers, Preferably they are 5 micrometers-80 micrometers. The obtained polarizer constitutes a polarizing film having a transparent protective layer on at least one surface according to a conventional method. The transparent protective layer can be formed as a coating layer made of a polymer or a laminate layer of a film. Although a suitable transparent material can be used as a transparent polymer or film material which forms a transparent protective layer, it is preferable to use the thing excellent in transparency, mechanical strength, thermal stability, or water barrier property.

In the present invention, a film obtained by uniaxially or biaxially stretching polycarbonate, polymethyl methacrylate, and the like, which is used as a compensation film and a retardation film, rather than a TAC film used in a polarizing film, may be used as a transparent support. Cycloolefin film was used.

More specifically, as the material for forming the transparent protective layer, polyester polymers such as polyethylene terephthalate and polyethylene naphthalate, cellulose polymers such as 2-acetic cellulose and 3-acetic cellulose, polymethyl methacrylate and the like And acrylic polymers, styrene polymers such as polystyrene and acrylonitrile styrene copolymer (AS resin), and polycarbonate polymers. Further, polyethylene, polypropylene, polyolefins having a cyclo- or norbornene structure, polyolefin-based polymers such as ethylene-propylene copolymers, amide-based polymers such as vinyl chloride-based polymers, nylon and aromatic polyamides, imide-based polymers, and sulfides Phone polymer, polyether sulfone polymer, polyether ether ketone polymer, polyphenylene sulfide polymer, vinyl alcohol polymer, vinylidene chloride polymer, vinyl butyral polymer, allylate polymer, polyoxymethylene polymer, Epoxy-based polymers or blends of the polymers may also be mentioned as examples of the polymer forming the transparent protective layer.

Although the thickness of a transparent protective layer is arbitrary, generally it is 500 micrometers or less for the purpose of thickness reduction of a polarizing film, and further 1 micrometer-300 micrometers, especially 5 micrometers-300 micrometers are preferable. In addition, in the case of forming the transparent protective layer on both sides of the polarizer can be used a transparent protective film made of a different polymer or the like on the front and back.

In addition, it is preferable that a transparent protective layer does not have coloring. Therefore, R _th = [(n _x + n _y ) / 2-n _z ] · d (where n _x , n _y are the major refractive indices in the film plane, n _z is the refractive index in the film thickness direction, and d is the film thickness). It is preferable to use the protective film whose phase difference value of the film thickness direction shown by () is -90 nm-+75 nm. By using such a phase difference value R _{th in the} thickness direction of -90 nm to +75 nm, the coloring (optical coloring) of the polarizing film resulting from the protective film can be almost eliminated. The thickness direction retardation value R _th is more preferably -80 nm to +60 nm, particularly -70 nm to +45 nm.

(ii) a composition constituting the antiglare coating layer

The anti-glare layer includes an ultraviolet curable resin, an inorganic oxide, a polymer bead, a curing agent, a polymerization initiator, a leveling agent, and a dispersing agent. Examine each component.

<Hardening resin>

The curable resin used in the present invention preferably uses an ultraviolet curable polyfunctional acrylate resin in order to obtain properties such as high hardness and transparency. Curable resins usable in the present invention are, of course, not limited to the listed resins as long as they exhibit the same effect.

UV-curable polyfunctional acrylate-based resin used in the present invention is dipentaerythritol hexaacrylate (dipentaerythritol hexaacrylte), tetramethylolmethane tetraacrylate, tetramethylolmethane triacrylate (tetramethylolmethane triacrylate), Trimethanolpropane triacrylate, 1,6-hexanediol diacrylate, 1,6-bis (3-acryloyloxy-2-hydroxypropyloxy) hexane [ Polyfunctional alcohol derivatives such as 1,6-bis (3-acryloyloxy-2-hydroxypropyl) hexane] and urethane acrylics such as polyethylene glycol diacrylate and pentaerythritol triacrylate Sole, hexamethylene diisocyanate urethane prepolymer, etc. It can be used in combination.

It is preferable to use 10 weight%-90 weight% of said ultraviolet curable polyfunctional acrylate resin with respect to 100 weight% of curable resin, More preferably, it is 30 weight%-87 weight%. Even more preferably, 50 to 85% by weight is used.

If the UV-curable polyfunctional acrylate-based resin is less than 10% by weight in 100% by weight of the curable resin, it is difficult to obtain the desired hardness due to the small number of absolute functional groups. There are disadvantages.

<Inorganic Oxide>

In the present invention, an inorganic oxide is used to obtain a conventional antiglare effect. As the inorganic oxide used in the present invention, it is preferable to use a metal oxide.

Metals forming metal oxides include sodium (Na), magnesium (Mg), potassium (K), calcium (Ca), scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), and manganese (Mn). ), Cobalt (Co), iron (Fe), copper (Cu), zinc (Zn), gallium (Ga), aluminum (Al), nickel (Ni), copper (Cu), rubidium (Rb), yttrium (Y ), Lanthanum (La), strontium (Sr), zirconium (Zr), niobium (Nb), molybdenum (Mo) and the like, and these metals form a plurality of metal oxides with one metal having a plurality of valences You may. It is also possible to form a multimetal oxide containing two or more metals.

In the present invention, metal oxides such as SiO ₂ , TiO ₂ , Al ₂ O ₃ , B ₂ O ₃ , CaO, SnO, MgO, SrO, ZnO, ZrO ₂ , Y ₂ O ₃ , La ₂ O _3, etc. Use by mixing.

The particle diameter of the metal oxide is preferably 0.1 µm to 10 µm, more preferably 0.5 µm to 7 µm. Even more preferably 1 µm to 5 µm. If the particle diameter of the metal oxide is less than 0.1 μm, it is difficult to obtain an antiglare effect due to satisfactory light diffusion, and the light diffusion property is lowered, so that the image is discolored to aluminum color. In addition, when the particle diameter of the metal oxide is larger than 10 mu m, the background of the screen to be applied becomes rough and the image contrast deteriorates.

The content of the metal oxide used in the present invention is preferably 1% to 25% by weight, more preferably 3% to 20% by weight based on 100% by weight of the antiglare coating composition. Even more preferably 4% to 12% by weight. If the content of the metal oxide is less than 1% by weight, it is difficult to expect the antiglare effect. If the content of the metal oxide is greater than 25% by weight, the antiglare effect is excessive and the transmittance is significantly reduced.

<Polymer Bead>

The present invention is characterized by the use of a polymer bead together with a metal oxide in order to obtain an antiglare effect.

Since the metal oxide reflects light without transmitting or refracting the metal oxide, the anti-glare effect can be maximized, but the glare phenomenon occurs when the anti-glare effect by the reflection is excessive. Therefore, there is a need for a transmissive bead that can reduce the reflection effect of the metal oxide to some extent and at the same time reduce glare. In the present invention, this problem can be solved by mixing the polymer beads having a predetermined refractive index with a predetermined amount of metal oxide.

When selecting the polymer beads used in the present invention, the type, particle size, particle shape and the like are selected in consideration of the ease of mixing with the metal oxide and the effect of preventing the high resolution of the metal oxide. In addition, it is also possible to use a mixture of conductive polymer beads to improve the antistatic function.

The polymer beads used in the high resolution anti-glare film according to the present invention can be clearly realized without adjusting the refractive index of the polymer beads, the size of the polymer beads, the shape of the polymer beads, and the like, without degrading the display quality with high anti-glare effect. have.

When a certain amount of conductive polymer beads are included in the polymer beads having an antiglare function, the conductive polymer beads perform an antistatic function and an antiglare function simultaneously. In order to secure the anti-glare function using the conductive polymer beads, it is possible to use spherical or needle-shaped conductive polymer beads, but in view of the degree of anti-glare effect, it is more preferable to use spherical polymer beads in the present invention. In the case of using substantially spherical particles or polygonal particles having an aspect ratio of more than 1.0, it is sometimes difficult to control the average inclination angle θa of the irregularities formed by the fine particles. The average inclination angle θa of the hard coat layer needs to be 0.4 ° or more and 1.5 ° or less. If average inclination angle (theta) a is less than 0.4 degrees, sufficient anti-glare property cannot be exhibited and the problem that the addition of external light etc. will arise. On the other hand, there exists a problem that haze value increases when average inclination-angle (theta) a exceeds 1.5 degrees. Therefore, the above range is preferable, and the anti-glare effect of the hard coat layer can be improved within this range, so that the introduction of external light can be appropriately prevented.

The polymer beads used in the present invention may include melamine beads (refractive index: 1.57), acrylic beads (refractive index: 1.47), acrylic-styrene beads (refractive index: 1.54), polycarbonate beads, polyethylene beads, vinyl chloride beads, and the like. There is this.

Acrylic beads used in the present invention are ethyl acrylate, butyl acrylate, amyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, cyclohexyl acrylate, benzyl acrylate, butyl methacrylate, 2-ethylhexyl meta Acrylate, cyclohexyl methacrylate, benzyl hexyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, methyl acrylate, methyl methacrylate, benzyl methacrylate, vinyl acetate, styrene, acrylonitrile, acrylic acid , Methacrylic acid, maleic anhydride, itaconic acid, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, N-methylol acrylamide, acrylamide, methacrylamide, glycidyl Amide, lauryl acrylate, ethoxydiethylene glycol acrylate, methoxy triethylene glycol Acrylate, phenoxyethyl acrylate, tetrahydrofuryl acrylate, isobornyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxy-3-phenoxy acrylate, neopentyl Glycol diacrylate, 1,6-hexanediol diacrylate, trimethylol propane triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, trimethylolpropane acrylate benzoate , 2-ethylhexyl methacrylate, n-stearyl methacrylate, cyclohexyl methacrylate, tetrahydrofurfuryl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxybutyl methacrylate, 1 , 6-hexanediol dimethacrylate, trimethylolpropane trimethacrylate, glycerin dimethacrylate Agent, glycerin dimethacrylate acrylate hexamethylene diisocyanate, pentaerythritol triacrylate is preferably a monomer or oligomer of hexamethylene diisocyanate used alone or in combination.

In addition, the styrene beads used in the present invention may be used alone or in combination with styrene, α-methylstyrene, α-ethylstyrene, o-ethylstyrene, p-ethylstyrene, 2,4-dimethylstyrene or vinyl toluene. desirable.

The particle diameter of the polymer beads used in the present invention is preferably 0.1 µm to 10 µm, more preferably 0.5 µm to 7 µm. Even more preferably 1 µm to 5 µm. If the particle diameter of the polymer bead is smaller than 0.1 μm, it is difficult to obtain a satisfactory antiglare effect, and the light diffusivity is lowered, so that the image is discolored to aluminum color. In addition, when the particle diameter of the polymer bead is larger than 10 µm, the background of the screen is easily roughened by the anti-glare particles, and the image contrast is deteriorated.

In addition, the thickness of the antiglare coating layer is preferably 1 µm to 15 µm, more preferably 3 µm to 9 µm. Even more preferred is 5 μm to 7 μm.

In the present invention, the refractive index of the polymer bead preferably has a difference of 0.1 to 2.0 with respect to the refractive index of the antiglare coating composition. More preferable refractive index difference is 0.5-1.8. If the difference in refractive index is less than 0.1, the anti-glare is not made more than the desired level, and if the refractive index difference is greater than 2.0, there is a problem that the internal scattering is too large and the total light transmittance is deteriorated. In addition, the refractive index of the polymer bead should be lower than the refractive index of the antiglare coating composition to easily adjust the refractive index and improve productivity.

In the present invention, the content of the polymer beads is preferably 1% to 25% by weight, more preferably 3% to 20% by weight based on 100% by weight of the antiglare coating composition. Even more preferably 4% to 12% by weight. When the content of the polymer bead is less than 1% by weight, it does not prevent the reduction of the fixed fine due to the metal oxide, and when the content is greater than 25% by weight, the antiglare effect is inferior to the total content of the antiglare coating composition.

Among the polymer beads, the conductive polymer beads are preferably 5% by weight to 40% by weight with respect to 100% by weight of the total polymer beads, and more preferably 15% by weight to 30% by weight. If the conductive polymer beads are less than 5% by weight, the antistatic function cannot be obtained. If the conductive polymer beads are larger than 40% by weight, the antistatic function is improved, but the physical properties of the film may be affected.

<Hardener>

The curing agent in the present invention can be selected and mixed as appropriate depending on the form of the functional group present in the photocurable resin, anti-glare coating composition, preferably isocyanate compound, epoxy compound, aziridine compound, metal chelate compound, metal An alkoxide metal salt, an amine compound, a hydrazine compound, etc. are used individually or in mixture.

Although the curing agent is not particularly limited, ionizing radiation curing is preferred. Various active energies can be used as the means, but ultraviolet rays are suitable. As an energy source, a high pressure mercury lamp, a halogen lamp, a xenon lamp, a metal halide lamp, a nitrogen laser, an electron beam accelerator, a radioactive element, etc. are preferable. In addition, it is preferable to adjust and select the type, size, content, etc. of the curing agent according to the type, physical and chemical properties of the curable resin to be used.

Isocyanate compounds in the present invention are trimethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, diphenylmethane isocyanate, xylene diisocyanate aromatic diisocyanate compounds such as diisocyanate, aliphatic diisocyanate such as hexamethyl diisocyanate, and the like are used alone or in combination.

In addition, the epoxy compound in the present invention is a polyethylene glycol diglycidyl ether (diglycidyl ether), diglycidyl ether (diglycidyl ether), trimethylol propane triglycidyl ether (trimethylol propane triglycidyl ether) and the like alone Or mixed.

In the antiglare coating layer of the present invention, the curing agent is preferably used in an amount of 0.1 wt% to 15 wt%, more preferably 0.5 wt% to 10 wt%, based on 100 wt% of the antiglare coating composition. Even more preferably 1% to 5% by weight.

 In the present invention, the curing agent is an additive used to control the molecular weight or the chain structure of the antiglare coating composition. When the curing agent is used in the above-described range, the effect of suppressing the phase separation phenomenon is prominent. When the content of the curing agent is less than 0.1% by weight, it is difficult to expect the function of the curing agent, and when the content of the curing agent is greater than 15% by weight, the content of the curable resin is relatively low, making it difficult to increase the hardness.

<Polymerization Initiator>

When using a photocurable resin and using a photocuring agent to cure it, it is preferable to add a polymerization initiator.

The photoinitiator used in the present invention is diethoxyacetphenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyl dimethyl ketal, 1-hydroxycyclohexyl-phenyl ketone, 2-methyl-2 Benzoin ethers such as acepine (4-thiomethylphenyl) propane-1-one, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfite, 4-benzoyl-N, N-dimethyl-N- [2- (1-oxo-2-propenyloxy) Ethyl] Benzophenones, such as benzene methananium bromide and (4-benzoyl benzyl) trimethylammonium chloride, thioxanthones, such as 2, 4- diethyl thioxanthone and 1-chloro-4- dichloro thioxanthone, 2, 4, 6-trimethylbenzoyldiphenylbenzoyl oxide, etc. can be used individually or in mixture. Moreover, as an accelerator (sensitizer), amine compounds, such as N, N- dimethyl paratoluidin, and 4, 4'- diethylamino benzophenone, can also be used individually or in mixture.

The content of the photopolymerization initiator is preferably in the range of 0.1 wt% to 10 wt%, more preferably 0.5 wt% to 5 wt%, in 100 wt% of the antiglare coating composition. If the content of the photoinitiator is less than 0.1% by weight, it is difficult to obtain a photopolymerization effect. If the content of the photoinitiator is more than 10% by weight, too much photoinitiator is added as compared to the photoinitiator effect, thereby reducing economic efficiency.

<Leveling agent>

In the present invention, to level the surface of the antiglare coating layer, a leveling agent is mixed with the antiglare coating composition. The leveling agent can be used by mixing a ketone or an ester solvent with silicone resin. Particular preference is given to reactive silicones among the silicone-based leveling agents. By adding reactive silicone, slipperiness is given to the surface and scratch resistance is maintained. In addition, when using the thing containing a siloxane component as a low refractive index layer, adhesiveness improves when using what has a hydroxyl group as reactive silicone. As a leveling agent by this invention, it is preferable to use a silicone diacrylate and a silicone polyacrylate compound individually or in mixture.

The content of the leveling agent is preferably 0.1% to 3% by weight, more preferably 0.5% to 2% by weight based on 100% by weight of the antiglare coating composition. When the leveling agent is less than 0.1% by weight, it is difficult to expect the leveling effect, and when the leveling agent is larger than 3% by weight, the surface hardness of the antiglare coating layer according to the present invention may be weakened.

In addition, when the fluorine-based resin and the silicone-based resin are used together, the content of the leveling agent is only 70% to 80% of the leveling agent content when using the fluorine-based resin. This is because the silicone resin itself acts as a leveling agent.

<Dispersant>

In the present invention, an organic solvent that is a dispersant is used to apply the antiglare coating layer to the transparent support. In the present invention, it is preferable to use an organic solvent in which the metal oxide and the polymer beads can be evenly dispersed.

An organic solvent is used in consideration of the coating property of the antiglare coating layer, the adhesion to the transparent support, and the improvement of the antiglare function.

The organic solvent used in the present invention is a C1-8 saturated hydrocarbon alcohol such as methanol, isopropanol, butanol, t-butanol, isobutanol and the like, acetone, methyl ethyl ketone, methyl isobutyl ketone and the like of ketones. Saturated hydrocarbon-based diketones having 1 to 8 carbon atoms, such as 1 to 8 saturated hydrocarbon ketones and acetyl acetone, ethyl acetate of esters, ethyl hydrocarbons of 1 to 8 carbon atoms such as butyl acetate, and ethyl alcohols of ether alcohols. Solves, methyl cellosolves, butyl cellosolves, 1-methoxy-2-propanol, and N-methyl pyrrolidone, ethyl cellosolve acetate, diacetone alcohol, and the like are used alone or in combination. Moreover, benzene, toluene, xylene, ethylbenzene, etc. which correspond to an aromatic hydrocarbon can also be used individually or in mixture.

The organic solvent is preferably used in an amount of 20 parts by weight to 110 parts by weight with respect to 100 parts by weight of the antiglare coating composition to be applied, and more preferably 30 parts by weight to 80 parts by weight. When the content of the organic solvent is less than 20 parts by weight with respect to 100 parts by weight of the antiglare coating composition, the viscosity is low, so that applicability and adhesion to the transparent support are inferior, and when the content of the organic solvent is greater than 110 parts by weight, more organic solvents are used than the antiglare coating composition. It is inferior in profitability by using.

(2) Structure of anti-glare compensation film

The high resolution anti-glare compensation film according to the present invention comprises a polarizer, a compensation film or a retardation film, and an anti-glare coating layer from the lower end. Since the present invention uses a compensation film other than triacetyl cellulose as a transparent support, there is an advantage that a polarizing film provided with a compensation film can be used as it is without going through a separate film production process to produce a film having an antiglare function. . That is, by adding an anti-glare function to the top of the polarizing film with a compensation film has the advantage that the existing film can be used as it is while maintaining the conventional physical properties.

Hereinafter, the present invention will be described in more detail with preferred examples of the present invention and comparative examples.

Example  One

3 parts by weight of SiO ₂ (sizes 1 to 4 μm) and polymethane methacrylate (particle size 1.5 μm) based on 100 parts by weight of a resin composition containing 65% by weight of xylene and 35% by weight of an ultraviolet curable resin (small Kensa MX-150) 2 parts by weight and a leveling agent were mixed to prepare a solution, and a microgravure coating was applied to a compensation film (Sekisusa's TER140 film), followed by drying and ultraviolet curing to prepare a 5 μm coating film.

Example  2

Polymethylmethacrylate bead (small) having 3.5 parts by weight of SiO ₂ (size 1 to 4 μm) and a particle diameter of 1.5 μm based on 100 parts by weight of a resin composition containing 65% by weight of xylene and 35% by weight of an ultraviolet curable resin. Kensa MX-150) 4 parts by weight and a leveling agent were mixed to prepare a solution, a microgravure coating was applied to a compensation film (Sekisusa's TER140 film), dried and UV cured to prepare a 5 μm coating film.

Example  3

3 parts by weight of SiO ₂ (sizes 1 to 4 μm) and polymethane methacrylate (particle size 1.5 μm) based on 100 parts by weight of a resin composition containing 65% by weight of xylene and 35% by weight of an ultraviolet curable resin (small Kensa MX-150) 2 parts by weight and a leveling agent were mixed to prepare a solution, and a microgravure coating was applied to a compensation film (Sekisusa's TER140 film), followed by drying and ultraviolet curing to prepare a 5 μm coating film.

Comparative example  One

Cycloolefin film without antiglare coating.

Comparative example  2

Cycloolefin film anti-glare coating only with SiO ₂ particles.

Comparative example  3

It is a film obtained by laminating a high resolution anti-glare triacetyl cellulose film to a cycloolefin film using an adhesive.

Table 1 shows the physical properties of the film according to Examples 1,2,3 and Comparative Examples.

division Film thickness (㎛) Pencil hardness Wear resistance Total light transmittance (%) Cloudiness (%) Transparency (%) Example 1 35 3H ◎ 95.70 43.90 63.70 Example 2 35 3H ◎ 95.73 58.70 40.80 Example 3 35 3H ◎ 95.47 81.10 28.60 Comparative Example 1 30 HB × 92.53 0.85 95.03 Comparative Example 2 35 3H ◎ 92.40 48.90 32.00 Comparative Example 3 95 2H ○ 94.37 41.70 66.30

(Film thickness)

The film thickness of Examples 1, 2 and 3 is 35 μm, and Comparative Example 1 is thin as 30 μm because the film is not coated. It was manufactured by laminating an antiglare film using a silver adhesive and the film thickness is very thick.

(Pencil hardness)

The glass surface in which the hard coat layer of the anti-glare hard coat film was not formed was mounted on a glass plate, and the hardness of the hard coat layer was tested for pencil hardness. As a result of the test, Examples 1, 2, and 3 all showed the results of 3H, and Comparative Examples 1 and 3 showed the hardness lower than the examples.

(Wear resistance)

Examples 1 and 2 and 3 have strong wear resistance, but the wear resistance of Comparative Example 1 and Comparative Example 3 showed weaker wear resistance than the examples of the present invention.

(Light transmittance)

The total light transmittances of Examples 1, 2 and 3 were similar, but the total light transmittances of Comparative Examples 1, 2 and 3 were very low in comparison with the examples.

(Blur)

The cloudiness of Example 1 and Comparative Example 3 was found to be almost similar.

(transparency)

The transparency of Example 1 exhibited similar values as in Comparative Example 3 in which an antiglare film was attached with an adhesive.

Table 2 shows the color values of the films obtained in Examples 1,2,3 and Comparative Examples.

Item L a b Example 1 76.26 0.31 2.64 Example 2 62.48 0.52 2.85 Example 3 50.55 0.93 3.80 Comparative Example 1 95.75 0.06 0.17 Comparative Example 2 75.58 0.15 1.39 Comparative Example 3 76.17 0.93 6.94

In addition, it is possible to coat the antireflection layer on the antiglare coating layer according to the present invention. When light hits an object, it passes through the back of the object, repeatedly reflecting at the interface, absorbing inside, and scattering. When the antiglare coating layer is added to the image display device, one of the factors that lowers the visibility of the image is the reflection of light at the interface between air and the antiglare coating layer. The antireflection layer reduces surface reflection. Therefore, one or more reflective coating layers may be installed on the anti-glare coating layer. The antireflection layer may be one obtained by laminating an optical thin film on which the thickness and refractive index are strictly controlled on the surface of the hard coating layer. This is a method of expressing the anti-reflection function by extinguishing the phases in which the incident light and the reflected light are reversed using the interference effect of light. Examples of the antireflection layer include a sol-gel material using a metal alkoxide such as a hybrid material in which inorganic fine particles such as colloidal silica are dispersed in a resin material and a resin. The material used as the reflective emission layer forming material preferably contains hollow, spherical silicon oxide ultrafine particles, and an inorganic sol may be added to the antireflection layer to improve film strength.

Further, if necessary, treatments or functions for imparting various characteristics, functions, etc., such as scratch resistance, durability, weather resistance, heat and humidity resistance, heat resistance, moisture resistance, moisture permeability, antistatic property, conductivity, interlayer adhesion improvement, and mechanical strength improvement, etc. Insertion of layers, lamination, or the like may also be applied.

The scope of the present invention is not limited to the above embodiments but may be embodied in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the invention as claimed in the claims, any person of ordinary skill in the art is considered to be within the scope of the claims based on the scope of the invention to various modifications possible.

In addition, the preferred range, more preferred range, even more preferred range limitation in the present invention is to maximize the effect even more, the narrower the narrower the scope can be obtained a more satisfactory technical effect.

When manufacturing an anti-glare hard coating compensation film according to the present invention, it is possible to impart excellent anti-glare without lowering the display quality of the liquid crystal display, excellent visibility and anti-glare hard coating compensation film that can obtain a high resolution image You can make

Claims (7)

In the method for producing an anti-glare hard coating compensation film, Laminating a compensation film or a retardation film made of polycycloolefin on the polarizer; UV curing resin, isocyanate compound, epoxy compound, aziridine compound, metal chelate compound, a metal alkoxide metal salt, an amine compound, a curing agent composed of at least one of hydride compound, SiO ₂ or TiO ₂ It is made of an inorganic particle and a polymer bead consisting of at least one of acrylic beads or styrene beads, the weight ratio of the inorganic particles and the polymer beads is 25: 1 to 1:25 by mixing the anti-glare particles, dispersing agent and leveling agent to prepare an anti-glare composition Doing; An antiglare layer coating step of forming an antiglare layer by coating the antiglare composition on an upper surface of a compensation film or a retardation film by an inline coating method; Including a curing step of photocuring the polarizing film including the anti-glare layer, the average inclination angle (θa) of the anti-glare layer formed by the curing step is characterized in that the anti-glare hard coating compensation film production, characterized in that 0.4 ° to 1.5 ° Way. The method of claim 1, Anti-glare hard coating compensation film manufacturing method characterized in that the addition of an anti-reflection layer on top of the anti-glare layer. delete delete The method of claim 1, Particle diameter of the anti-glare microparticles is a diffuse reflection compensation film manufacturing method, characterized in that 0.1 to 10㎛. delete delete

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