TWI816202B - Metal oxide dispersion composition for display, and preparing method for the same and optical member - Google Patents

Abstract

The present invention relates to a metal oxide dispersion composition for display, its preparation method and optical elements for display. A metal oxide dispersion composition for display according to an embodiment of the present invention includes: metal oxide particles; acrylate monomers; silane-based surface treatment agents; and dispersants, wherein the dispersants include: fatty acid type Dispersant; or a dispersant mixed with a phosphate dispersant and a fatty acid dispersant.

Description

Metal oxide dispersion composition for display, preparation method thereof and optical element for display

The present invention relates to a metal oxide dispersion composition for display, its preparation method and optical elements for display.

Optically transparent polymer materials are widely used in optical coatings and optoelectronic materials due to their low cost, good processing performance, and high visible light transmittance. In recent years, transparent materials with high refractive index have been used as materials for optical filters, lenses, reflectors, optical waveguides, anti-reflection films, solar cells and light-emitting diodes (LEDs).

In order to improve the quality of displays (such as high brightness, high contrast, low power consumption, etc.), high refractive index inorganic materials for displays have been introduced and are expected to be more widely used in the future. Inorganic materials have a higher refractive index than organic materials, which helps to improve optical properties, but the disadvantage is that the viscosity increases significantly with the increase in content. Therefore, the low viscosity of organic-inorganic hybrid compositions must be achieved in technological development. a characteristic of.

Therefore, it is necessary to develop a metal oxide dispersion that can improve the viscosity of the film and reduce the occurrence of film yellowing while achieving a high refractive index.

A metal oxide dispersion composition for display according to an embodiment of the present invention includes: metal oxide particles; acrylate monomers; silane-based surface treatment agents; and dispersants, wherein the dispersants include: fatty acid type Dispersant; or a dispersant mixed with a phosphate dispersant and a fatty acid dispersant.

According to one embodiment, the dispersant that mixes the phosphate dispersant and the fatty acid dispersant is a mixture of the phosphate dispersant and the fatty acid dispersant in a ratio of 1.5:1 to 6.

According to an embodiment, the acrylate monomer may include o-phenylphenol ethylene oxide acrylate (O-phenylphenol EO Acrylate; OPPEA), phenol acrylate (Phenol (EO) Acrylate; PHEA), 3 -(phenoxyphenyl)methyl prop-2-enoate (PBA), methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, Butyl acrylate, isobutyl acrylate, tert-butyl acrylate, amyl acrylate, isopentyl acrylate, 2-ethylhexyl acrylate, isooctyl acrylate, nonyl acrylate, isononyl acrylate, dodecyl acrylate Ester, stearyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, isobutyl methacrylate, tert-butyl methacrylate Ester, amyl methacrylate, isopentyl methacrylate, 2-ethylhexyl methacrylate, isooctyl methacrylate, nonyl methacrylate, isononyl methacrylate, dodecyl methacrylate Alkyl ester, stearyl methacrylate, 2-ethoxyethoxyethyl acrylate, 2-ethoxyethoxyethyl methacrylate, methoxyethyl acrylate, methoxymethacrylate Ethyl ester, 2-phenoxyethyl acrylate, ethoxyphenoxy acrylate, 3,3,5-trimethylcyclohexane acrylate, cyclotriethylpropane methyl acrylate, benzyl acrylate , one or more selected from the group consisting of isobornyl acrylate, cyclohexyl acrylate and biphenyl methyl acrylate.

According to an embodiment, the acrylate monomer may account for 20% to 60% by weight of the metal oxide dispersion composition for display.

According to an embodiment, the silane-based surface treatment agent may include γ-methacryloxypropyltrimethoxysilane, 4-aminobutylmethyldiethoxysilane, 3-aminopropyltrimethoxysilane Silane, N-2-aminoethyl-3-aminopropyldiethylisopropoxysilane, (mercaptomethyl)dimethylethoxysilane, di-4-mercaptobutyldimethoxysilane, 3-Mercaptopropyltriisopropoxysilane, 3-methacryloxypropyldimethylethoxysilane, 3-acryloxypropyltrimethoxysilane, (3-glycidoxysilane Propyl)methyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-chloropropyltrimethoxysilane, 4-bromobutylmethyldibutoxysilane , 5-iodohexyldiethylmethoxysilane, 3-isocyanatopropyltrimethoxysilane, 3-isothiocyanatepropylmethyldimethoxysilane, 3-hydroxybutylisopropyldimethyl Oxysilane, bis(2-hydroxyethyl)-3-aminopropyltriethoxysilane, bromophenyltrimethoxysilane, (2-(iodophenyl)ethyl)ethyldimethoxysilane , bis(chloromethylphenyl)dimethoxysilane, bromomethylphenyldimethylisopropoxysilane, bis(propyltrimethoxysilane)carbodiimide, N-ethyl-N- (propylethoxydimethoxysilane)-carbodiimide, 3-(trimethoxysilyl)propanol, (3,5-hexanedione)triethoxysilane, 3-(trimethoxysilyl) methylsilyl)propyl acetyl acetate, 3-(trimethoxysilyl)propyl methacrylate silane, 3-aminopropyltrimethoxysilane, 2-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, 3-ureidopropyltrimethyl Oxysilane, N-ethoxycarbonyl-3-aminopropyltrimethoxysilane, N-triethoxysilylpropyltriethylenetriamine, N-trimethoxysilylpropyltriethylenetriamine, 10- Trimethoxysilyl-1,4,7-triaminozolidine, 10-triethoxysilyl-1,4,7-triazoledecane, 9-trimethoxysilyl-3, 6-Azononyl acetate, 3-(triethoxysilyl)propylsuccinic anhydride, N-benzyl-3-aminopropyltrimethoxysilane, N-phenyl-3-aminopropyl At least one selected from the group consisting of trimethoxysilane, N-dioxyvinyl-3-aminopropyltrimethoxysilane and (methacryloxy)propyltrimethoxysilane.

According to an embodiment, the silane-based surface treatment agent may account for 1% to 10% by weight of the metal oxide dispersion composition for display.

According to one embodiment, the fatty acid dispersant includes a saturated or unsaturated fatty acid compound having 1 to 20 carbon atoms; the fatty acid dispersant may include oleic acid, palmitic acid, linoleic acid (LA) , ω6 fatty acids of γ-linolenic acid (GLA), α-linolenic acid (ALA), stearic acid (SDA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA), poly At least one selected from the group consisting of unsaturated fatty acids (EPA) and eicosadonic acid (ETA).

According to an embodiment, the phosphate dispersant may include isopropyl phosphate, diisopropyl phosphate, triisopropyl phosphate, butyl phosphate, dibutyl phosphate, tributyl phosphate, and octyl phosphate. , dioctyl phosphate, trioctyl phosphate, isodecyl phosphate, diisodecyl phosphate, triisodecyl phosphate, tridecyl phosphate, bis(tridecyl)phosphate, diphosphate Methyl phosphate, trimethyl phosphate, diethyl phosphate, triethyl phosphate, dipropyl ester, tripropyl phosphate, methyl phosphate, ethyl phosphate, propyl phosphate, benzyl phosphate, dibenzyl phosphate, tribenzyl phosphate Ester, polyoxyethylene nonylphenol ether phosphate, tripolyoxyethylene nonylphenol ether phosphate, ethylene glycol monoethyl phosphate, diethylene glycol monoethyl phosphate, triethylene glycol monoethyl phosphate, Select from the group consisting of diethylene glycol monobutyl diphosphate, diethylene glycol monobutyl phosphate, isopropylene glycol monoethyl phosphate, diisopropylene glycol monoethyl phosphate, and triisopropylene glycol monoethyl phosphate. At least any kind.

According to an embodiment, the fatty acid dispersant may account for 1% to 10% by weight of the metal oxide dispersion composition for display.

According to an embodiment, the metal oxide particles may include at least any one selected from the group consisting of ZrO2, SiO2, TiO2, SrTiO2, MgO, Ta2O5, ZrO2-TiO2, and SiO2-Fe2O3.

According to an embodiment, the metal oxide particles may account for 30% to 70% by weight of the metal oxide dispersion composition for display.

According to an embodiment, the viscosity of the metal oxide dispersion composition for display may be 2000 cP or less, and its haze (Haze) may be 20% or less.

According to an embodiment, the liquid phase refractive index of the metal oxide dispersion composition for display may be above 1.5, and its yellowness index (Y.I) may be below 50.

A method for preparing a metal oxide dispersion composition for display according to an embodiment of the present invention includes the following steps: preparing a mixed liquid by adding metal oxide particles, metal oxide particles and a silane-based surface treatment agent to an organic solvent ; Add beads (Bead) to the mixed liquid at twice the weight of the metal oxide particles and disperse them to prepare a metal oxide-organic solvent dispersion; and add the metal oxide-organic solvent to the mixed liquid. Acrylate monomers and dispersants are added to the dispersion, and organic solvents are removed.

According to an embodiment, the organic solvent may include tetrahydrofuran, isopropyl alcohol, n-butanol, ethylene glycol, propylene glycol, methyl ethyl ketone, diethyl ketone, methyl isobutyl ketone, CHN, ethyl acetate, acetic acid Butyl ester, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, n-hexane, toluene, xylene, styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, vinyltoluene, p-methylstyrene Oxystyrene, benzyl acrylate, benzyl methacrylate, phenyl acrylate, diphenyl acrylate, diphenyl acrylate, 2-diphenyl acrylate, 2-([1,1'-biphenyl]-2 -Oxy)ethyl acrylate, phenoxybenzyl acrylate, 3-phenoxybenzyl-3-(1-naphthyl)acrylate, ethyl(2E)-3-hydroxy-2-(3- Phenoxybenzyl) acrylate, phenyl methacrylate, diphenyl methacrylate, 2-nitrophenyl acrylate, 4-nitrophenyl acrylate, 2-nitrophenyl methacrylate , 4-Nitrophenyl methacrylate, 2-nitrobenzyl methacrylate, 4-nitrobenzyl methacrylate, 2-chlorophenyl acrylate, 4-chlorophenyl acrylate, 2-Chlorophenyl methacrylate, 4-chlorophenyl methacrylate, o-phenylphenol ethyl acrylate, bisphenol diacrylate, 2-ethylhexyl (meth)acrylate, isobornyl ( Methacrylate, dimethylaminoethyl (meth)acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, methyl ethylene glycol mono( Meth)acrylate, methyltriethylene diglycol (meth)acrylate, 1,4-butanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, hydroxyneopentyl Neopentyl glycol di(meth)acrylate, dicyclofentanyl di(meth)acrylate, caprolactone modified dicyclofentanyl di(meth)acrylate, ethylene oxide modified diphosphate (Meth)acrylate, arylated cyclohexyl di(meth)acrylate, ethylene glycol di(meth)acrylate, 1,6-hexanediol diacrylate, trimethylolpropane tri(meth)acrylate base) acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol penta(meth)acrylate (other) acrylate, dipentaerythritol hexa(meth)acrylate, polyol poly(meth)acrylate, amino One or more types selected from the group consisting of formate (meth)acrylate and glyceryl trimethacrylate.

A thin film composition for display according to another embodiment of the present invention includes: a metal oxide dispersion composition for display according to one embodiment of the present invention or a metal oxide dispersion for display according to another embodiment A metal oxide dispersion liquid composition for display prepared by a liquid composition preparation method; an ultraviolet (UV) photoinitiator; and a monomer for ultraviolet curing.

According to an embodiment, the ultraviolet photoinitiator may include at least one selected from the group consisting of: a cationic photoinitiator selected from an onium salt series, a diazonium salt series, a sulfonium salt series compound, and an imidazole series compound. Initiator; and selected from the group consisting of thioxanthone series, phosphorus series, triazine series, benzophenone series, benzoin series, oxime series, acetone series, aminoketone series, ketone series, benzoin ether acetophenone series, anthraquinone series and free radical photoinitiators for aromatic phosphine oxide-based compounds.

According to an embodiment, the monomer for UV curing may include glycidyl acrylate, glycidyl methacrylate, glycidyl-α-ethyl acrylate, glycidyl-α-ene-propyl acrylate, Glycidyl-α-butyl acrylate, 3,4-epoxy butyl methacrylate, 3,4-epoxy butyl acrylate, 6,7-epoxy peptidyl methacrylate, 6,7-epoxy Heptyl acrylate, 6,7-epoxyheptyl-α-ethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl acrylate, tetrahydrofurfuryl acrylate, isobornyl acrylate, 2- One or more selected from the group consisting of hydroxyethyl methacrylate, tripropylene glycol diacrylate, dipropylene glycol diacrylate, 1,6-hexanediol diacrylate and trimethylpropane triacrylate.

An optical film for display according to yet another embodiment of the present invention is prepared by UV curing the film composition for display according to an embodiment of the present invention, and has a yellowness index (Y.I) of less than 50.

An optical element for display according to yet another embodiment of the present invention includes an optical film for display according to an embodiment of the present invention.

The titanium dioxide dispersion composition according to the present invention includes a silane-based surface treatment agent and a phosphate ester-type dispersant, thereby achieving low viscosity and high refractive index while reducing the yellowness index (Y.I). Since the metal oxide dispersion composition for display according to the present invention has a relatively low viscosity, it can be applied as an inkjet printing material that requires low viscosity properties, and has high practicality.

In addition, the film composition according to the present invention can produce an optical film that achieves a high refractive index while having improved optical properties and yellowness index.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Various changes can be made to the following embodiments, but the scope of rights of this case is not limited or restricted by the following embodiments. All modifications of all embodiments, their equivalents and even their substitutes are included in the scope of rights.

The terms used in the embodiments are only used to describe specific embodiments and are not used to limit the embodiments. Unless otherwise specified in the content, singular expressions include the plural. In this specification, terms such as "comprising" or "having" are used to express the presence of the features, values, steps, operations, components, accessories or combinations thereof described in the specification, and do not exclude the presence of one or more other features. , values, steps, operations, components, accessories or combinations thereof, or additional functions.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the usual meaning as commonly understood by one of ordinary skill in the art. Commonly used terms that are the same as dictionary definitions should be understood to have meanings consistent with the usual content of the relevant technology, and should not be overly idealized or interpreted as formal meanings unless explicitly mentioned in this case.

In addition, in the program described with reference to the drawings, the same components are assigned the same reference numerals regardless of the reference numerals, and repeated descriptions thereof are omitted. In the process of describing the embodiments, when it is judged that detailed description of relevant publicly known technologies will unnecessarily obscure the embodiments, detailed descriptions thereof will be omitted.

Furthermore, when describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. However, the use of the above terms is only to distinguish this constituent element from other constituent elements, and is not used to limit the nature, arrangement or sequence of the corresponding constituent elements.

Components having the same functions as those in any one embodiment will be described using the same names in other embodiments. Unless a counterexample is mentioned, the description recorded in any one embodiment can be applied to other embodiments, and therefore, detailed description will be omitted within the scope of repetition.

Traditional high refractive index zirconia dispersions have excellent high refractive properties, but there is a limitation that the viscosity also increases rapidly with the increase in refractive index, so when mixed with organic resin to reach the target refractive index, a relative Higher viscosity, thus limiting its use. To overcome this, attempts were made to reduce the viscosity while maintaining a high refractive index, but improvements were difficult to achieve as the content of inorganic materials could not be reduced to reach the target refractive index. In the present invention, the viscosity is reduced by changing the surface treatment agent of the zirconium oxide particles, and the number of zirconium oxide particles is reduced to minimize the reduction in refractive index caused by additives and maintain the optical properties, thereby preparing a product with high Monomer dispersions with refractive and low viscosity properties.

A metal oxide dispersion composition for display according to an embodiment of the present invention includes: metal oxide particles; acrylate monomers; silane-based surface treatment agents; and dispersants, wherein the dispersants include: fatty acid type Dispersant; or a dispersant mixed with a phosphate dispersant and a fatty acid dispersant.

The metal oxide dispersion composition for display according to the present invention can achieve a zirconia monomer with a viscosity of 2000 cP or less by applying a fatty acid-type dispersant or a dispersant that mixes fatty acid-type and phosphate-type dispersants at a certain ratio. It is a bulk dispersion and achieves low viscosity and high refractive index while reducing the yellowness index, so it has excellent transparency. Since the dispersion of the present invention has a relatively low viscosity, it can be applied as an inkjet printing material that requires low viscosity properties, and can be used in various ways.

According to one embodiment, the dispersant that mixes the phosphate dispersant and the fatty acid dispersant is a mixture of the phosphate dispersant and the fatty acid dispersant in a ratio of 1.5:1 to 6. By satisfying the above ratio, a zirconia monomer dispersion with a viscosity of 2000 cP or less can be achieved.

According to an embodiment, the acrylate monomer serves as an optical adhesive, can maintain high transmittance and low haze, and can be corrosion-resistant to ITO. The acrylate resin, as a saturated hydrocarbon-based polymer without intramolecular double bonds, has excellent oxidation resistance in terms of its inherent properties, so it has excellent weather resistance.

According to an embodiment, the acrylic ester monomer may be at least one ester of acrylic acid or methacrylic acid. As long as it has an acrylic acid structure in its molecular structure, any type of acrylic ester monomer may be used.

According to an embodiment, the acrylate monomer may include o-phenylphenol ethylene oxide acrylate (O-phenylphenol EO Acrylate; OPPEA), phenol acrylate (Phenol (EO) Acrylate; PHEA), 3 -(phenoxyphenyl)methyl prop-2-enoate (PBA), methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, Butyl acrylate, isobutyl acrylate, tert-butyl acrylate, amyl acrylate, isopentyl acrylate, 2-ethylhexyl acrylate, isooctyl acrylate, nonyl acrylate, isononyl acrylate, dodecyl acrylate Ester, stearyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, isobutyl methacrylate, tert-butyl methacrylate Ester, amyl methacrylate, isopentyl methacrylate, 2-ethylhexyl methacrylate, isooctyl methacrylate, nonyl methacrylate, isononyl methacrylate, dodecyl methacrylate Alkyl ester, stearyl methacrylate, 2-ethoxyethoxyethyl acrylate, 2-ethoxyethoxyethyl methacrylate, methoxyethyl acrylate, methoxymethacrylate Ethyl ester, 2-phenoxyethyl acrylate, ethoxyphenoxy acrylate, 3,3,5-trimethylcyclohexane acrylate, cyclotriethylpropane methyl acrylate, benzyl acrylate , one or more selected from the group consisting of isobornyl acrylate, cyclohexyl acrylate and biphenyl methyl acrylate.

According to an embodiment, the acrylate monomer may account for 20% to 60% by weight of the metal oxide dispersion composition for display. When the acrylate monomer accounts for less than 20% by weight in the metal oxide dispersion composition for display, problems such as reduced processability due to increased viscosity and lack of functional groups may occur, and , when it accounts for more than 60% by weight, the target refractive index cannot be achieved.

According to one embodiment, the silane-based surface treatment agent allows the metal oxide to maintain high transparency and high refractive index in the metal oxide dispersion composition for display, thereby allowing the metal oxide to be dispersed in the solvent. .

According to an embodiment, the silane-based surface treatment agent may include γ-methacryloxypropyltrimethoxysilane, 4-aminobutylmethyldiethoxysilane, 3-aminopropyltrimethoxysilane Silane, N-2-aminoethyl-3-aminopropyldiethylisopropoxysilane, (mercaptomethyl)dimethylethoxysilane, di-4-mercaptobutyldimethoxysilane, 3-Mercaptopropyltriisopropoxysilane, 3-methacryloxypropyldimethylethoxysilane, 3-acryloxypropyltrimethoxysilane, (3-glycidoxysilane Propyl)methyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-chloropropyltrimethoxysilane, 4-bromobutylmethyldibutoxysilane , 5-iodohexyldiethylmethoxysilane, 3-isocyanatopropyltrimethoxysilane, 3-isothiocyanatepropylmethyldimethoxysilane, 3-hydroxybutylisopropyldimethyl Oxysilane, bis(2-hydroxyethyl)-3-aminopropyltriethoxysilane, bromophenyltrimethoxysilane, (2-(iodophenyl)ethyl)ethyldimethoxysilane , bis(chloromethylphenyl)dimethoxysilane, bromomethylphenyldimethylisopropoxysilane, bis(propyltrimethoxysilane)carbodiimide, N-ethyl-N- (propylethoxydimethoxysilane)-carbodiimide, 3-(trimethoxysilyl)propanol, (3,5-hexanedione)triethoxysilane, 3-(trimethoxysilyl) methylsilyl)propyl acetyl acetate, 3-(trimethoxysilyl)propyl methacrylate silane, 3-aminopropyltrimethoxysilane, 2-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, 3-ureidopropyltrimethyl Oxysilane, N-ethoxycarbonyl-3-aminopropyltrimethoxysilane, N-triethoxysilylpropyltriethylenetriamine, N-trimethoxysilylpropyltriethylenetriamine, 10- Trimethoxysilyl-1,4,7-triaminozolidine, 10-triethoxysilyl-1,4,7-triazoledecane, 9-trimethoxysilyl-3, 6-Azononyl acetate, 3-(triethoxysilyl)propylsuccinic anhydride, N-benzyl-3-aminopropyltrimethoxysilane, N-phenyl-3-aminopropyl At least one selected from the group consisting of trimethoxysilane, N-dioxyvinyl-3-aminopropyltrimethoxysilane and (methacryloxy)propyltrimethoxysilane.

According to an embodiment, the silane-based surface treatment agent may account for 1% to 10% by weight of the metal oxide dispersion composition for display. When the silane-based surface treatment agent accounts for less than 1% by weight of the metal oxide dispersion composition for display, turbidity may occur due to the reduction in the dispersibility of the metal oxide in the dispersion composition; when it When it exceeds 10% by weight, since the silane compound is excessively bound to the surface of the metal oxide particles, aggregation will occur between the particles, resulting in an increase in viscosity. Preferably, the silane-based surface treatment agent may account for 50% to 8% by weight of the metal oxide dispersion composition for display.

According to an embodiment, the phosphate dispersant may include isopropyl phosphate, diisopropyl phosphate, triisopropyl phosphate, butyl phosphate, dibutyl phosphate, tributyl phosphate, and octyl phosphate. , dioctyl phosphate, trioctyl phosphate, isodecyl phosphate, diisodecyl phosphate, triisodecyl phosphate, tridecyl phosphate, bis(tridecyl)phosphate, diphosphate Methyl phosphate, trimethyl phosphate, diethyl phosphate, triethyl phosphate, methyl phosphate, ethyl phosphate, propyl phosphate, benzyl phosphate, dibenzyl phosphate, tribenzyl phosphate, polyoxyethylene nonylphenol Ether phosphate, tripolyoxyethylene nonylphenol ether phosphate, ethylene glycol monoethyl phosphate, diethylene glycol monoethyl phosphate, triethylene glycol monoethyl phosphate, diethylene glycol monobutyl diphosphate Ester, diethylene glycol monobutyl phosphonium At least any one selected from the group consisting of acid ester, isopropylene glycol monoethyl phosphate, diisopropylene glycol monoethyl phosphate, and triisopropylene glycol monoethyl phosphate.

According to an embodiment, the phosphate dispersant may account for 0.5% to 5% by weight of the metal oxide dispersion composition for display. When the phosphate type dispersant accounts for less than 0.5% by weight in the metal oxide dispersion composition for display, turbidity occurs in the solution phase because sufficient dispersibility cannot be ensured, and ring changes may not be suppressed. Phenomenon; when it exceeds 5% by weight, due to the chain entanglement of the large molecular weight phosphate dispersant, the viscosity of the dispersion may increase and the dispersibility may decrease, and problems may arise in the curing and visibility of the coating. Preferably, the phosphate dispersant may account for 0.5% to 3% by weight of the metal oxide dispersion composition for display.

According to one embodiment, the fatty acid dispersant includes a saturated or unsaturated fatty acid compound having 1 to 20 carbon atoms; the fatty acid dispersant may include oleic acid, palmitic acid, linoleic acid (LA) , ω6 fatty acids of γ-linolenic acid (GLA), α -linolenic acid (ALA), stearic acid (SDA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA), poly At least any one selected from the group consisting of unsaturated fatty acid (EPA) and eicosadonic acid (ETA).

According to an embodiment, the fatty acid dispersant may account for 0.5% to 5% by weight of the metal oxide dispersion composition for display. When the fatty acid-type dispersant accounts for less than 0.5% by weight in the metal oxide dispersion composition for display, the low viscosity and high refractive index effects will be reduced; when it exceeds 5% by weight, there may be problems from the surface. The amount of isolated fatty acids increases. Preferably, the fatty acid ester dispersant may account for 0.5% to 3% by weight of the metal oxide dispersion composition for display.

According to an embodiment, the dispersant may account for 1% to 10% by weight of the metal oxide dispersion composition for display. The phosphate dispersant, fatty acid dispersant or the sum of the two preferably does not exceed the range of 1 to 10 wt%.

According to an embodiment, the metal oxide particles may include at least any one selected from the group consisting of ZrO2, SiO2, TiO2, SrTiO2, MgO, Ta2O5, ZrO2-TiO2, and SiO2-Fe2O3. Preferably, the metal oxide particles may be ZrO2. The ZrO2 particles have a high refractive index, essentially no photocatalytic activity, and excellent light resistance and weather resistance.

According to an embodiment, the metal oxide particles may account for 30% to 70% by weight of the metal oxide dispersion composition for display. When the metal oxide particles account for less than 30% by weight of the metal oxide dispersion composition for display, the brightness of the cured composition may be reduced, resulting in reduced optical properties of the cured film produced in post-processing. ; When its weight exceeds 70%, the dispersion interval between metal oxide particles may be extremely low, resulting in an excessive increase in the viscosity of the dispersion and aggregation between metal oxide particles.

According to an embodiment, the average particle size of the metal oxide particles may be 5 nm to 40 nm based on D50. When the average particle diameter of the metal oxide particles is less than 5 nm based on D50, dispersion may become difficult due to the increase in particle surface energy; when it exceeds 40 nm based on D50, aggregation or precipitation will occur, resulting in Problems such as poor appearance of the coating and reduced refractive index.

According to an embodiment, the viscosity of the metal oxide dispersion composition for display may be 2000 cP or less, and its haze (Haze) may be 20% or less. When the viscosity of the metal oxide dispersion composition for display exceeds 2000 cP, since the viscosity becomes too high, it is difficult to prepare a liquid with an organic material, and when preparing a thin film for display, it may be difficult to form a uniform film layer.

According to an embodiment, the liquid phase refractive index of the metal oxide dispersion composition for display may be above 1.5, and its yellowness index (Y.I) may be below 50.

The metal oxide dispersion liquid composition for display according to the present invention achieves a high refractive index of 1.5 or more, and, compared with a dispersion liquid composition in which only a silane-based surface treatment agent or a phosphate ester-type dispersant is added, it can significantly Improve yellowness index.

That is, the metal oxide dispersion composition for display according to the present invention can achieve high refractive index and low viscosity while improving the yellowness index.

Since the metal oxide dispersion composition for display according to the present invention has a relatively low viscosity, it can be applied as an inkjet printing material that requires low viscosity properties, and has high practicality.

A method for preparing a metal oxide dispersion composition for display according to an embodiment of the present invention includes the following steps: preparing a mixed liquid by adding metal oxide particles, metal oxide particles and a silane-based surface treatment agent to an organic solvent ; Add beads (Bead) to the mixed liquid at twice the weight of the metal oxide particles and disperse them to prepare a metal oxide-organic solvent dispersion; and add the metal oxide-organic solvent to the mixed liquid. Acrylate monomers and dispersants are added to the dispersion, and organic solvents are removed.

A method for preparing a metal oxide dispersion composition for display according to an embodiment of the present invention includes the following steps: preparing a mixed liquid; preparing a metal oxide-organic solvent dispersion; and removing the organic solvent.

According to an embodiment, in the step of preparing the mixed liquid, the mixed liquid may be prepared by adding metal oxide particles and a silane-based surface treatment agent to an organic solvent.

According to an embodiment, the organic solvent may include tetrahydrofuran, isopropyl alcohol, n-butanol, ethylene glycol, propylene glycol, methyl ethyl ketone, diethyl ketone, methyl isobutyl ketone, CHN, ethyl acetate, acetic acid Butyl ester, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, n-hexane, toluene, xylene, styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, vinyltoluene, p-methylstyrene Oxystyrene, benzyl acrylate, benzyl methacrylate, phenyl acrylate, diphenyl acrylate, diphenyl acrylate, 2-diphenyl acrylate, 2-([1,1'-biphenyl]-2 -Oxy)ethyl acrylate, phenoxybenzyl acrylate, 3-phenoxybenzyl-3-(1-naphthyl)acrylate, ethyl(2E)-3-hydroxy-2-(3- Phenoxybenzyl) acrylate, phenyl methacrylate, diphenyl methacrylate, 2-nitrophenyl acrylate, 4-nitrophenyl acrylate, 2-nitrophenyl methacrylate , 4-Nitrophenyl methacrylate, 2-nitrobenzyl methacrylate, 4-nitrobenzyl methacrylate, 2-chlorophenyl acrylate, 4-chlorophenyl acrylate, 2-Chlorophenyl methacrylate, 4-chlorophenyl methacrylate, o-phenylphenol ethyl acrylate, bisphenol diacrylate, 2-ethylhexyl (meth)acrylate, isobornyl ( Methacrylate, dimethylaminoethyl (meth)acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, methyl ethylene glycol mono( Meth)acrylate, methyltriethylene diglycol (meth)acrylate, 1,4-butanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, hydroxyneopentyl Neopentyl glycol di(meth)acrylate, dicyclofentanyl di(meth)acrylate, caprolactone modified dicyclofentanyl di(meth)acrylate, ethylene oxide modified diphosphate (Meth)acrylate, arylated cyclohexyl di(meth)acrylate, ethylene glycol di(meth)acrylate, 1,6-hexanediol diacrylate, trimethylolpropane tri(meth)acrylate base) acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol penta(meth)acrylate (other) acrylate, dipentaerythritol hexa(meth)acrylate, polyol poly(meth)acrylate, amino One or more types selected from the group consisting of formate (meth)acrylate and glyceryl trimethacrylate.

According to an embodiment, the metal oxide particles may include at least any one selected from the group consisting of ZrO2, SiO2, TiO2, SrTiO2, MgO, Ta2O5, ZrO2-TiO2, and SiO2-Fe2O3. Preferably, the metal oxide particles may be ZrO2.

According to an embodiment, in the metal oxide dispersion composition for display, the silane-based surface treatment agent is as described above.

According to an embodiment, after the silane-based surface treatment agent is added to the organic solvent, mixing can be performed using a stirring rod at a temperature of 20° C. to 30° C. for 5 minutes to 20 minutes.

According to an embodiment, in the step of preparing the metal oxide-organic solvent dispersion, beads (Beads) may be placed in the mixed liquid with a weight twice the weight of the metal oxide particles and dispersed, thereby Preparation of metal oxide-organic solvent dispersions.

According to one embodiment, the beads may include spins from the group consisting of zirconia, yttria, yttria-stabilized zirconia, aluminum oxide, titanium dioxide, magnesium oxide, silicon carbide, tungsten carbide, titanium carbide, and silicon nitride At least any kind. Preferably, the beads may be zirconia beads.

According to one embodiment, after adding beads to the mixed liquid, a paint stirrer may be used to disperse the metal oxide particles for 2 to 4 hours.

According to an embodiment, in the step of removing the organic solvent, an acrylate monomer and a dispersant may be added to the metal oxide-organic solvent dispersion, and the organic solvent may be removed.

According to an embodiment, in the metal oxide dispersion composition for display, the acrylate monomer and dispersant are as described above.

According to one embodiment, a 1 μm injection screening program is used to filter out undispersed large metal oxide particles in the metal oxide-organic solvent dispersion, and the organic solvent is removed by vacuum in the final step, thereby preparing A solvent-free dispersion composition for display is produced.

A thin film composition for display according to another embodiment of the present invention includes: a metal oxide dispersion composition for display according to one embodiment of the present invention or a metal oxide dispersion for display according to another embodiment A metal oxide dispersion liquid composition for display prepared by a liquid composition preparation method; an ultraviolet (UV) photoinitiator; and a monomer for ultraviolet curing.

According to an embodiment, the ultraviolet photoinitiator may include a cationic photoinitiator, a free radical photoinitiator, or both.

According to an embodiment, the ultraviolet photoinitiator may include at least one selected from the group consisting of: a cationic photoinitiator selected from an onium salt series, a diazonium salt series, a sulfonium salt series compound, and an imidazole series compound. Initiator; and selected from the group consisting of thioxanthone series, phosphorus series, triazine series, benzophenone series, benzoin series, oxime series, acetone series, aminoketone series, ketone series, benzoin ether acetophenone series, anthraquinone series and free radical photoinitiators for aromatic phosphine oxide-based compounds.

According to an embodiment, the ultraviolet photoinitiator may account for 2% to 5% by weight of the film composition for display. When the ultraviolet photoinitiator is less than 2% by weight of the film composition for display, the film composition may not be sufficiently cured, making it difficult to ensure appropriate hardness; when it exceeds 5% by weight, due to curing shrinkage, Cracks, peeling, etc. may occur after film formation.

According to an embodiment, the monomer for UV curing may include acrylate resin. The acrylate resin, as a saturated hydrocarbon-based polymer without intramolecular double bonds, has excellent oxidation resistance in terms of its inherent properties, so it has excellent weather resistance.

According to an embodiment, the monomer for UV curing may include glycidyl acrylate, glycidyl methacrylate, glycidyl-α-ethyl acrylate, glycidyl-α-ene-propyl acrylate, Glycidyl-α-butyl acrylate, 3,4-epoxy butyl methacrylate, 3,4-epoxy butyl acrylate, 6,7-epoxy peptidyl methacrylate, 6,7-epoxy Heptyl acrylate, 6,7-epoxyheptyl-α-ethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl acrylate, tetrahydrofurfuryl acrylate, isobornyl acrylate, 2- One or more selected from the group consisting of hydroxyethyl methacrylate, tripropylene glycol diacrylate, dipropylene glycol diacrylate, 1,6-hexanediol diacrylate and trimethylpropane triacrylate.

According to an embodiment, the film composition for display according to the present invention may further include an acrylic resin.

According to an embodiment, the acrylic resin may include hydroxyethyl acrylate (HEA), hydroxyethyl methacrylate (HEMA), hexanediol diacrylate (HDDA), tripropylene glycol diacrylate (TPGDA), Ethylene glycol diacrylate (EGDA), trimethylolpropane triacrylate (TMPTA), trimethylolpropane ethoxytriacrylate (TMPEOTA), glycerol propoxylated triacrylate (GPTA), pentaerythritol Tetraacrylate (PETA), benzyl methacrylate, phenyl acrylate, diphenyl acrylate, diphenyl acrylate, 2-diphenyl acrylate, 2-([1,1'-biphenyl]-2-oxo Ethyl acrylate, phenoxybenzyl acrylate, 3-phenoxybenzyl-3-(1-naphthyl)acrylate, phenyl methacrylate, diphenyl methacrylate, 2-nitrobenzene selected from the group consisting of acrylate, 4-nitrophenyl acrylate, 2-nitrophenyl methacrylate, 4-nitrophenyl methacrylate and dipentaerythritol hexaacrylate (DPHA) More than one kind.

The film composition according to an embodiment of the present invention can prepare a composition with low viscosity and can improve the yellowing of the film color.

An optical film for display according to yet another embodiment of the present invention is prepared by UV curing the film composition for display according to an embodiment of the present invention, and has a yellowness index (Y.I) of less than 50.

The optical film for display according to the present invention not only achieves a high refractive index of above 1.65, but also reduces the yellowness index. Preferably, it achieves a high refractive index above 1.69.

An optical element for display according to yet another embodiment of the present invention includes an optical film for display according to an embodiment of the present invention.

According to an embodiment, the optical element used for display may include a polarizing film, a prism sheet, an AR sheet, etc.

Hereinafter, the present invention will be described in detail with reference to the following Examples and Comparative Examples. However, the technical spirit of the present invention is not limited to this. [Example 1]

In tetrahydrofuran (THF), 40% by weight of zirconium oxide powder with a primary particle size of 10 nm as an organic solvent and methacryloxypropylmethoxysilane (MPS) (3-(methacryloxypropylmethoxy)) as a silane-based surface treatment agent were added. silane; MPS) (Sigma-Aldrich) 5% by weight, a stir rod was used to prepare the mixture. After sufficient stirring, 0.05 mm zirconia beads were added at twice the weight of the above mixture, and then a paint stirrer was used A dispersion with a zirconium oxide content of 40% was obtained. Here, 30% by weight of 3-(phenoxyphenyl)methylpropyl-2-enoic acid ((3-( phenoxyphenyl)methyl prop-2-enoate; PBA), 1.8% by weight of Plysurf AL (DKS Company) as a phosphate dispersant and 1.2% by weight of ED401 (Hiplaad Company) as a fatty acid dispersant, and a 1 μm injection sieve was used The program was used to filter out undispersed large metal oxide particles and reduce the pressure to remove tetrahydrofuran (THF), thereby preparing a high refractive index dispersion composition for display. [Example 2]

In Example 2, it was prepared in the same manner as in Example 1 except that 1.2% by weight of Plysurf AL (DKS Company) was added as a phosphate dispersant and 1.8% by weight of ED401 (Hiplaad Company) as a fatty acid dispersant. A metal oxide dispersion composition. [Example 3]

In Example 3, it was prepared in the same manner as in Example 1 except that 0.6% by weight of Plysurf AL (DKS Company) was added as a phosphate dispersant and 2.4% by weight of ED401 (Hiplaad Company) as a fatty acid dispersant. A metal oxide dispersion composition. [Example 4]

In Example 4, a metal oxide dispersion liquid composition was prepared in the same manner as in Example 1, except that only 3% by weight of ED401 (Hiplaad Company) was added as a fatty acid-type dispersant. [Comparative example 1]

In Comparative Example 1, it was prepared in the same manner as Example 1, except that 2.4% by weight of Plysurf AL (DKS Company) was added as a phosphate dispersant and 0.6% by weight of ED401 (Hiplaad Company) as a fatty acid dispersant. A metal oxide dispersion composition. [Comparative example 2]

In Comparative Example 2, a metal oxide dispersion liquid composition was prepared in the same manner as in Example 1, except that only 3% by weight of Plysurf AL (DKS Company) was added as a phosphate dispersant. [Comparative example 3]

In Comparative Example 3, a metal oxide dispersion liquid composition was prepared in the same manner as in Example 1, except that only 3% by weight of ED154 (Hiplaad Company) was added as a dispersant. Table 1 below graphically illustrates the measured refractive index, viscosity, haze and YI as components of the dispersion compositions for display of Examples 1 to 4 of the present invention and the dispersant compositions of Comparative Examples 1 to 3. content and physical properties. [Table 1] Example 1 Example 2 Example 3 Example 4 Comparative example 1 Comparative example 2 Comparative example 3 Inorganic matter ZrO ₂ 60 60 60 60 60 60 60 organic matter 3-(phenoxyphenyl)methylpropyl-2-enoic acid 30 30 30 30 30 30 30 surface treatment agent MPS 7 7 7 7 7 7 7 dispersant Plysurf AL 1.8 1.2 0.6 - 2.4 3 - ED401 1.2 1.8 2.4 3 0.6 - - ED154 - - - - - - 3 physical properties refractive index 1.69 1.69 1.69 1.69 1.69 1.69 1.69 Viscosity(cp) 1,817 1,420 1,240 894 2,528 2,528 8,300 Haze (%) 12.3 16.0 12.2 19.8 10.6 12.6 21.9 YI. 35.5 37.2 40.4 47.1 35.1 35.6 38.2

It can be seen from the results in Table 1 that by applying a fatty acid type dispersant (Example 4) or a dispersant that mixes a fatty acid type and a phosphate ester type dispersant at a certain ratio (Examples 1 to 3), it is possible to prepare A metal oxide particle dispersion composition for display with a viscosity of 2000cP or less, a refractive index of 1.69 or more, and a Y.I. of 50 or less.

In summary, the embodiments have been described with limited drawings, and those of ordinary skill in the art can make various modifications and variations to the above descriptions. For example, the described technology is performed in a different sequence from the described method, and/or the described constituent elements are combined or combined in a different form from the described method, or are replaced with other constituent elements or equivalents, or Displacement can also achieve the same effect.

Therefore, other embodiments, other embodiments, and equivalents within the scope of the patent application all fall within the scope of the patent application.

without

without

Domestic storage information (please note in order of storage institution, date and number) without Overseas storage information (please note in order of storage country, institution, date, and number) without

Claims (15)

A metal oxide dispersion composition for display, which includes: metal oxide particles; acrylate monomers; silane-based surface treatment agents; and dispersants, wherein the dispersants include: fatty acid dispersants; or A dispersant mixing a phosphate dispersant and a fatty acid dispersant, the metal oxide particles accounting for 30% to 70% by weight of the metal oxide dispersion composition for display, and the acrylate monomer The body accounts for 20% to 60% by weight of the metal oxide dispersion composition for display, and the silane-based surface treatment agent accounts for 1% to 1% by weight of the metal oxide dispersion composition for display. 10% by weight, the dispersant of the mixed phosphate dispersant and fatty acid dispersant is to mix the phosphate dispersant and fatty acid dispersant in a ratio of 1.5:1 to 6, and the phosphate dispersant The agent accounts for 0.5% to 5% by weight of the metal oxide dispersion composition for display, and the fatty acid dispersant accounts for 0.5% to 5% by weight of the metal oxide dispersion composition for display. weight%. The metal oxide dispersion composition for display according to claim 1, wherein the acrylate monomer includes o-phenylphenol ethylene oxide acrylate, phenol acrylate, 3-(phenoxybenzene) Base) Methylpropyl-2-enoic acid, methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, isobutyl acrylate, tert-butyl acrylate, amyl acrylate, isopentyl acrylate Ester, 2-ethylhexyl acrylate, isooctyl acrylate, nonyl acrylate, isononyl acrylate, dodecyl acrylate, stearyl acrylate, methyl methacrylate, ethyl methacrylate, methyl Propyl acrylate, isopropyl methacrylate, butyl methacrylate, isobutyl methacrylate, tert-butyl methacrylate, amyl methacrylate, isoamyl methacrylate, 2-ethyl methacrylate Hexyl methacrylate, isooctyl methacrylate, nonyl methacrylate, isononyl methacrylate, dodecyl methacrylate, stearyl methacrylate, 2-ethoxyethoxyethyl acrylate Ester, 2-ethoxyethoxyethyl methacrylate, methoxyethyl acrylate, methoxyethyl methacrylate, 2-phenoxyethyl acrylate, ethoxyphenoxy acrylate, In the group consisting of 3,3,5-trimethylcyclohexane acrylate, cyclotriethylpropane methyl acrylate, benzyl acrylate, isobornyl acrylate, cyclohexyl acrylate and biphenylmethyl acrylate Choose more than one. The metal oxide dispersion composition for display according to claim 1, wherein the silane-based surface treatment agent includes γ-methacryloxypropyltrimethoxysilane, 4-aminobutylmethyldiethyl Oxysilane, 3- Aminopropyltrimethoxysilane, N-2-aminoethyl-3-aminopropyldiethylisopropoxysilane, (mercaptomethyl)dimethylethoxysilane, di-4-mercaptobutyl Dimethoxysilane, 3-mercaptopropyltriisopropoxysilane, 3-methacryloxypropyldimethylethoxysilane, 3-acryloxypropyltrimethoxysilane, ( 3-glycidoxypropyl)methyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-chloropropyltrimethoxysilane, 4-bromobutylmethyl Dibutoxysilane, 5-iodohexyldiethylmethoxysilane, 3-isocyanatopropyltrimethoxysilane, 3-isothiocyanatepropylmethyldimethoxysilane, 3-hydroxybutyl isopropyldimethoxysilane, bis(2-hydroxyethyl)-3-aminopropyltriethoxysilane, bromophenyltrimethoxysilane, (2-(iodophenyl)ethyl)ethyl Dimethoxysilane, bis(chloromethylphenyl)dimethoxysilane, bromomethylphenyldimethylisopropoxysilane, bis(propyltrimethoxysilane)carbodiimide, N -Ethyl-N-(propylethoxydimethoxysilane)-carbodiimide, 3-(trimethoxysilyl)propanol, (3,5-hexanedione)triethoxysilane , 3-(trimethoxysilyl)propyl acetyl acetate, 3-(trimethoxysilyl)propyl methacrylate silane, 3-aminopropyltrimethoxysilane, 2-aminopropyl Trimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, 3 -Ureidopropyltrimethoxysilane, N-ethoxycarbonyl-3-aminopropyltrimethoxysilane, N-triethoxysilylpropyltriethylenetriamine, N-trimethoxysilylpropyltriamine Ethylenetriamine, 10-trimethoxysilyl-1,4,7-triaminozolidine, 10-triethoxysilyl-1,4,7-triazole Decane, 9-trimethoxysilyl-3,6-azononyl acetate, 3-(triethoxysilyl)propylsuccinic anhydride, N-benzyl-3-aminopropyl Trimethoxysilane, N-phenyl-3-aminopropyltrimethoxysilane, N-dioxyethylene-3-aminopropyltrimethoxysilane and (methacryloxy)propyltrimethoxysilane One or more types selected from the group consisting of silane. The metal oxide dispersion composition for display according to claim 1, wherein the phosphate dispersant includes isopropyl phosphate, diisopropyl phosphate, triisopropyl phosphate, butyl phosphate, phosphoric acid Dibutyl phosphate, tributyl phosphate, octyl phosphate, dioctyl phosphate, trioctyl phosphate, isodecyl phosphate, diisodecyl phosphate, triisodecyl phosphate, tridecyl phosphate, Bis(tridecanoic acid) phosphate, dimethyl phosphate, trimethyl phosphate, diethyl phosphate, triethyl phosphate, methyl phosphate, ethyl phosphate, propyl phosphate, benzyl phosphate, dibenzyl phosphate , tribenzyl phosphate, polyoxyethylene nonylphenol ether phosphate, tripolyoxyethylene nonylphenol ether phosphate, ethylene glycol monoethyl phosphate, diethylene glycol monoethyl phosphate, triethylene glycol monoethyl phosphate It is composed of diethylene glycol monobutyl diphosphate, diethylene glycol monobutyl diphosphate, isopropylene glycol monoethyl phosphate, diisopropylene glycol monoethyl phosphate, and triisopropylene glycol monoethyl phosphate. At least any one selected from the group. The metal oxide dispersion composition for display according to claim 1, wherein the fatty acid-type dispersant includes a saturated or unsaturated fatty acid compound having 1 to 20 carbon atoms, and the fatty acid-type dispersant includes from Omega 6 fatty acids of oleic acid, palmitic acid, linoleic acid (LA), gamma-linolenic acid (GLA), alpha -linolenic acid (ALA), stearic acid (SDA), docosapentaenoic acid (DPA) and At least any one selected from the group consisting of docosahexaenoic acid (DHA) and eicosadonic acid (ETA), the fatty acid dispersant accounting for the metal oxide dispersion liquid combination for display 1% to 10% by weight of the material. The metal oxide dispersion composition for display according to claim 1, wherein the metal oxide particles include from the group consisting of ZrO2, SiO2, TiO2, SrTiO2, MgO, Ta2O5, ZrO2-TiO2 and SiO2-Fe2O3 At least one of the options. The metal oxide dispersion composition for display according to claim 1, wherein the viscosity of the metal oxide dispersion composition for display is 2000 cP or less, and its haze is 20% or less. The metal oxide dispersion composition for display according to claim 1, wherein the liquid phase refractive index of the metal oxide dispersion composition for display is 1.5 or more, and its yellowness index is 50 or less. A method for preparing a metal oxide dispersion composition for display, which includes the following steps: Prepare a mixed liquid by adding metal oxide particles, metal oxide particles, and a silane-based surface treatment agent to an organic solvent; add beads to the mixed liquid at twice the weight of the metal oxide particles and disperse them , thereby preparing a metal oxide-organic solvent dispersion; and adding acrylate monomers and dispersants to the metal oxide-organic solvent dispersion, and removing the organic solvent, where the dispersants include: fatty acid dispersants; Or a dispersant that mixes a phosphate ester type dispersant and a fatty acid type dispersant. The phosphate ester type dispersant and fatty acid type dispersant are mixed at a ratio of 1.5:1. Mix to a ratio of 6. The method for preparing a metal oxide dispersion composition for display according to claim 9, wherein the organic solvent includes tetrahydrofuran, isopropyl alcohol, n-butanol, ethylene glycol, propylene glycol, methyl ethyl ketone, diethyl ketone , methyl isobutyl ketone, cyclohexanone (CHN), ethyl acetate, butyl acetate, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, n-hexane, toluene, xylene, styrene, o-methyl Styrene, m-methylstyrene, p-methylstyrene, vinyltoluene, p-methoxystyrene, benzyl acrylate, benzyl methacrylate, phenyl acrylate, diphenyl acrylate, diphenyl acrylate , 2-Diphenyl acrylate, ethyl 2-([1,1'-biphenyl]-2-oxy)acrylate, phenoxybenzyl acrylate, 3-phenoxybenzyl Ethyl-3-(1-naphthyl)acrylate, ethyl(2E)-3-hydroxy-2-(3-phenoxybenzyl)acrylate, phenyl methacrylate, diphenyl methacrylate, 2-nitrophenyl acrylate, 4-nitrophenyl acrylate, 2-nitrophenyl methacrylate, 4-nitrophenyl methacrylate, 2-nitrobenzyl methacrylate , 4-nitrobenzyl methacrylate, 2-chlorophenyl acrylate, 4-chlorophenyl acrylate, 2-chlorophenyl methacrylate, 4-chlorophenyl methacrylate, orthophenyl Phenyl ethyl acrylate, bisphenol diacrylate, 2-ethylhexyl (meth)acrylate, isobornyl (meth)acrylate, dimethylaminoethyl (meth)acrylate, 2-hydroxy Ethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, methyl ethylene glycol mono(meth)acrylate, methyltriethylene diglycol (meth)acrylate, 1, 4-Butanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, hydroxypivalate neopentyl glycol di(meth)acrylate, bicyclofentanyl di(meth)acrylate Acrylate, caprolactone-modified bicyclofentanyl di(meth)acrylate, ethylene oxide-modified phosphate di(meth)acrylate, arylated cyclohexyl di(meth)acrylate, ethylene glycol Alcohol di(meth)acrylate, 1,6-hexanediol diacrylate, trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol penta(meth)acrylate Select from the group consisting of ester (other) acrylate, dipentaerythritol hexa(meth)acrylate, polyol poly(meth)acrylate, urethane (meth)acrylate and glyceryl trimethacrylate More than one kind. A film composition for display, wherein Including: the metal oxide dispersion composition for display according to claim 1 or the metal oxide for display prepared according to the preparation method of the metal oxide dispersion composition for display according to claim 9 Dispersion composition; UV photoinitiator; and monomer for UV curing. The film composition for display according to claim 11, wherein the ultraviolet photoinitiator includes at least any one selected from the group consisting of: selected from the group consisting of onium salts, diazonium salts, and sulfonium salts. Compounds and imidazole-based cationic photoinitiators; and selected from the group consisting of thioxanthone series, phosphorus series, triazine series, benzophenone series, benzoin series, oxime series, acetone series, aminoketone series, ketone series, and benzoin ethers Free radical photoinitiator for acetophenone, anthraquinone and aromatic phosphine oxide based compounds. The film composition for display according to claim 11, wherein the monomer for ultraviolet curing includes glycidyl acrylate, glycidyl methacrylate, glycidyl-α-ethyl acrylate, glycidyl- α-ene-propyl acrylate, glycidyl-α-butyl acrylate, 3,4-epoxy butyl methacrylate, 3,4-epoxy butyl acrylate, 6,7-epoxy peptidyl methacrylate Ester, 6,7-epoxyheptyl acrylate, 6,7- Epoxyheptyl-α-ethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl acrylate, tetrahydrofurfuryl acrylate, isobornyl acrylate, 2-hydroxyethyl methacrylate, tris One or more types selected from the group consisting of propylene glycol diacrylate, dipropylene glycol diacrylate, 1,6-hexanediol diacrylate and trimethylpropane triacrylate. An optical film for display, which is prepared by ultraviolet curing of the film composition for display of claim 11 and has a yellowness index of less than 50. An optical element for display, which includes the optical film for display of claim 14.