KR102582662B1 - Blue photosensitive resin composition, color filter and image display device produced using the same - Google Patents

Abstract

The present invention is a blue photosensitive resin composition comprising scattering particles, a blue colorant, a cardo-based binder resin, a photopolymerization initiator, a photopolymerizable compound, a UV absorber, and a solvent, wherein the UV absorber is one or more of benzotriazole-based and triazine-based. It relates to a blue photosensitive resin composition comprising a blue photosensitive resin composition, a color filter manufactured using the same, and an image display device.

Description

Blue photosensitive resin composition, color filter and image display device manufactured using the same {BLUE PHOTOSENSITIVE RESIN COMPOSITION, COLOR FILTER AND IMAGE DISPLAY DEVICE PRODUCED USING THE SAME}

The present invention relates to a blue photosensitive resin composition, a color filter manufactured using the same, and an image display device.

A color filter is a thin film-type optical component that extracts three colors, red, green, and blue, from white light and enables them to be expressed in tiny pixel units. The size of one pixel is about tens to hundreds of micrometers. These color filters include a black matrix layer formed in a predetermined pattern on a transparent substrate to block light at the boundary between each pixel, and a plurality of colors (typically red (R), green (G) and It has a structure in which the pixel units in which the three primary colors (blue (B)) are arranged in a certain order are stacked one after another.

Recently, as one of the methods of implementing a color filter, a pigment dispersion method using a pigment-dispersed photosensitive resin has been applied. However, as the light emitted from the light source passes through the color filter, part of the light is absorbed by the color filter and the light Efficiency is reduced, and color reproduction is reduced due to the characteristics of the pigment contained in the color filter.

To solve this problem, a color filter manufacturing method using a self-luminous photosensitive resin composition containing quantum dots was proposed.

Specifically, Republic of Korea Patent Publication No. 2007-0094679 suggests that color reproducibility can be improved by having a color filter layer formed of quantum dots, and Republic of Korea Patent Publication No. 2009-0036373 suggests that existing color filters can be converted into quantum dot phosphors. It is suggested that display quality can be improved by improving luminous efficiency by replacing it with a light-emitting layer made up of a light-emitting layer.

In addition, photosensitive resin compositions developed to date to manufacture color filters have not sufficiently satisfied the requirements such as excellent pattern characteristics and heat resistance.

Republic of Korea Patent Publication No. 2007-0094679 Republic of Korea Patent Publication No. 2009-0036373

The present invention has excellent processability due to its excellent development speed, has excellent heat resistance when formed as a cured film, so yellowing does not occur at high temperatures, so there is no change in luminous intensity, and it has excellent pattern characteristics by enabling the formation of fine patterns of a certain value. The purpose of the present invention is to provide a color filter that improves the problem of poor implementation of fine pixels, particularly a blue photosensitive resin composition capable of implementing a self-luminous color filter, and a color filter and image display device manufactured using the same.

A blue photosensitive resin composition comprising scattering particles, a blue colorant, a cardo-based binder resin, a photopolymerizable compound, a photopolymerization initiator, a UV absorber, and a solvent, wherein the UV absorber includes at least one of benzotriazole-based and triazine-based, A blue photosensitive resin composition is provided.

Additionally, the present invention provides a color filter including a blue pattern layer made of the above-described blue photosensitive resin composition.

Additionally, the present invention provides the color filter; and a light source that emits blue light.

The present invention includes a UV absorber containing at least one of benzotriazole and triazine in the blue photosensitive resin composition, so that it has excellent heat resistance and does not cause yellowing at high temperatures, so there is no change in luminous intensity, and a fine pattern of a constant value is formed. This makes it possible to implement a color filter that has excellent pattern characteristics and improves the problem of poor implementation of fine pixels, especially a self-luminous color filter. In addition, it is possible to provide a self-luminous color filter with high quality image quality and an excellent viewing angle.

The blue photosensitive resin composition of the present invention may include scattering particles, a blue colorant, a cardo-based binder resin as a binder resin, a photopolymerization initiator, a photopolymerizable compound, a heat curing agent, and a solvent. In particular, the UV absorber may include benzotriazole-based and triazine-based binder resins. By containing at least one of the true systems, the color filter including the blue pattern layer manufactured using the blue photosensitive resin composition of the present invention has excellent thermal resistance, does not cause yellowing at high temperatures, does not change the luminous intensity, and maintains a constant value. Since fine patterns can be formed, it is possible to provide color filters that improve the problem of poor implementation of fine pixels, especially self-luminous color filters. In addition, it is possible to provide a high-quality color filter with an excellent viewing angle, especially a self-luminous color filter, and an image display device including the same.

Hereinafter, the configuration of the present invention will be described in detail.

scattering particles

The scattering particles of the present invention may be metal oxides having an average particle diameter of 10 to 1000 nm, and more preferably, the average particle diameter is in the range of 30 to 300 nm. At this time, if the average particle diameter is less than the above range, a sufficient scattering effect of incident light cannot be expected, and if the average particle diameter is greater than the above range, the particle sinks in the composition or a self-luminous layer surface of uniform quality cannot be obtained.

The metal oxides include Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Mo, Cs, Ba, La, Hf, W, Tl, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Ti, Sb, Sn, Zr, Nb, It may be an oxide containing one type of metal selected from the group consisting of Ce, Ta, In, and combinations thereof. More specifically, Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , ZnO, Nb ₂ O ₃ , SnO and MgO, and the group consisting of combinations thereof. There may be one or more selected types. If necessary, materials surface treated with a compound having an unsaturated bond such as acrylate can also be used.

The average particle diameter and content of the scattering particles in the total composition can be appropriately adjusted as needed to sufficiently improve the luminous intensity of the color filter.

Additionally, the scattering particles may be included in an amount of 0.1 to 50% by weight, preferably 5 to 30% by weight, based on the total weight of solids in the blue photosensitive resin. If the scattering particles are within the above preferred range, the effect of increasing the luminous intensity can be obtained and the stability of the composition can be ensured.

blue colorant

In the blue colorant of the present invention, the blue pigment specifically includes compounds classified as pigments in the color index (published by The society of Dyers and Colourists), and more specifically, the color index (C.I.) as follows: The pigments of the numbers may be mentioned, but are not necessarily limited to these. The blue pigment is specifically, for example, C.I. Pigment Blue 15:3, 15:4, 15:6, 16, 21, 28, and 76, and C.I. It is preferable to include at least one selected from the group consisting of Pigment Blue 15:3, Pigment Blue 15:6, and Pigment Blue 16.

The blue colorant of the present invention may further include a blue dye, and the blue dye includes compounds classified as dyes in the color index (published by The Society of Dyers and Colourists) or known compounds described in the dyeing notes (color dyeing yarn). Dyes can be mentioned.

For specific examples of dyes that can be additionally used,

C.I. As a solvent dye,

C.I. Examples include Solvent Blue 5, 35, 36, 37, 44, 45, 59, 67 and 70, and C.I. It is more preferable to include one or more of Solvent Blue 35, 36, 44, 45 and 70.

Additionally, C.I. As an acid dye,

C.I. Acid Blue 1, 7, 9, 15, 18, 23, 25, 27, 29, 40, 42, 45, 51, 62, 70, 74, 80, 83, 86, 87, 90, 92, 96, 103 , 112, 113, 120, 129, 138, 147, 150, 158, 171, 182, 192, 210, 242, 243, 256, 259, 267, 278, 280, 285, 290, 296, 315, 324: 1 , 335 and 340, among others, C.I. It is more preferable to include at least one of Acid Blue 80 and 90.

Additionally, C.I. As a direct dye,

C.I. Direct Blue 38, 44, 57, 70, 77, 80, 81, 84, 85, 86, 90, 93, 94, 95, 97, 98, 99, 100, 101, 106, 107, 108, 109, 113 , 114, 115, 117, 119, 137, 149, 150, 153, 155, 156, 158, 159, 160, 161, 162, 163, 164, 166, 167, 170, 171, 172, 173, 188, 189 , 190, 192, 193, 194, 196, 198, 199, 200, 207, 209, 210, 212, 213, 214, 222, 228, 229, 237, 238, 242, 243, 244, 245, 247, 248 , 250, 251, 252, 256, 257, 259, 260, 268, 274, 275 and 293.

C.I. Modanto Blue 1, 2, 3, 7, 8, 9, 12, 13, 15, 16, 19, 20, 21, 22, 23, 24, 26, 30, 31, 32, 39, 40, 41, 43, 44, 48, 49, 53, 61, 74, 77, 83, and 84.

The above blue dyes can be used alone or in combination of two or more types.

The blue colorant of the present invention may further include a purple colorant as an additional colorant. The purple colorant may include one or more of a purple pigment and a purple dye, and the purple pigment is specifically, C.I. Pigment Violet 1, 14, 19, 23, 29, 32, 33, 36, 37 and 38, among others, C.I. It is more preferable to include Pigment Violet 23.

The purple dye is specifically C.I. Solvent violet, C.I. Acid Violet, C.I. Acid Violet, C.I. Modanto Violet, etc. are included, but are not limited thereto.

Specifically, the above C.I. Solvent Violet is C.I. Examples include Solvent Violet 8, 9, 13, 14, 36, 37, 47, and 49, and C.I. It is more preferable to include Solvent Violet 13. C.I. Acid Violet is C.I. Acid Violet 6B, 7, 9, 17, 19 and 66, etc., C.I. It is more preferred to include Acid Violet 66. C.I. Direct Violet includes C.I. Direct Violet 47, 52, 54, 59, 60, 65, 66, 79, 80, 81, 82, 84, 89, 90, 93, 95, 96, 103 and 104. .

Also, C.I. Modanto Violet 1, 2, 4, 5, 7, 14, 22, 24, 30, 31, 32, 37, 40, 41, 44, 45, 47, 48, 53 and 58. .

The blue colorant can be used in an amount of 0.1 to 50% by weight, preferably 0.5 to 30% by weight, based on the total weight of solids in the blue photosensitive resin. When the content of the blue colorant satisfies the above range, external light reflection can be suppressed, color emission intensity can be effectively displayed, and viscosity stability can be ensured.

In the case of self-luminous photosensitive resin containing quantum dots, quantum efficiency may decrease and its performance may deteriorate. In particular, blue quantum dots are expensive, so there is a problem of increased cost, and there are process limitations due to their vulnerability to high temperature processes. In the present invention, by including a blue colorant and scattering particles even though blue quantum dots are not included, it is possible to prevent a decrease in the efficiency of the blue pixel of a color filter, especially a self-luminous color filter.

binder resin

The binder resin of the present invention includes a cardo-based binder resin. The cardo-based binder resin has reactivity and alkali solubility under the action of light or heat, and acts as a dispersion medium for the coloring material. The cardo-based binder resin contained in the blue photosensitive resin composition of the present invention acts as a binder resin for scattering particles, and is not limited as long as it is a resin that is soluble in the alkaline developer used in the development step for manufacturing the color filter.

The cardo-based binder resin of the present invention may include one or more of the compounds represented by Formula 1-1 and Formula 1-2.

[Formula 1-1]

[Formula 1-2]

In Formula 1-1 or Formula 1-2,

R ₁ , R ₂ , R ₃ and R ₄ are each independently, and;

X is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a hydroxyl group;

R ₅ is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.

In the present invention, the compound represented by Formula 1-1 can be synthesized using the compound represented by Formula 2-1, and the compound represented by Formula 1-2 can be synthesized using the compound represented by Formula 2-2. .

In the present invention, the compound represented by Formula 1-1 can be synthesized using the compound represented by Formula 2-1, and the compound represented by Formula 1-2 can be synthesized using the compound represented by Formula 2-2. .

[Formula 2-1]

[Formula 2-2]

Specifically, the compound represented by Formula 1-1 is one or more of the compounds represented by Formula 1-1-1 and Formula 1-1-2, and the compound represented by Formula 1-2 is Formula 1-2- It may be one or more of the compounds represented by Formula 1 and Formula 1-2-2.

[Formula 1-1-1]

[Formula 1-1-2]

[Formula 1-2-1]

[Formula 1-2-2]

The cardo-based binder resin is 9,9-bis (3-cinnamic diester) fluorene (9,9-bis (3-cinnamic diester) fluorene), 9,9-bis (3-cinnamoyl, 4-hyde Roxyphenyl) fluorene (9,9-bis (3-cinnamoil, 4-hydroxyphenyl) fluorene), 9,9-bis (glycidyl methacrylate ether) fluorene (9,9-bis (glycidyl methacrylate ether) fluorene), 9,9-bis (3,4-dihydroxyphenyl) fluorene dicinnamic ester (9,9-bis (3,4-dihydroxyphenyl) fluorene dicinnamic ester), 3,6-diglycidyl meta Crylate ether spiro (fluorene-9,9-xantene) (3,6-diglycidyl methacrylate ether spiro(fluorene-9,9-xantene)), 9,9-bis (3-allyl, 4-hydroxyphenyl fluoride) orene)(9,9-bis(3-allyl, 4-hydroxyphenylfluorene), 9,9-bis(4-allyloxyphenyl)fluorene(`9,9-bis(4-allyloxyphenyl)fluorene) and 9,9 -At least one selected from the group consisting of bis(3,4-methacrylic diester)fluorene (9,9-bis(3,4-methacrylic diester)fluorene) and an acid anhydride such as maleic anhydride, succinic anhydride, A group consisting of itaconic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methylenedomethylenetetrahydrophthalic anhydride, chlororendic anhydride, and methyltetrahydrophthalic anhydride, or acid dianhydrides such as pyromellitic anhydride and benzophenone. It can be prepared by reacting with at least one selected from the group consisting of aromatic polycarboxylic acid anhydrides such as tetracarboxylic dianhydride, biphenyltetracarboxylic dianhydride, and bitenyl ether tetracarboxylic dianhydride, but is not limited to this.

The present invention may further include an acrylic alkali-soluble resin as a binder resin. Examples of the acrylic alkali-soluble resin include a carboxyl group-containing monomer and a copolymer of this monomer with another copolymerizable monomer. Examples of the carboxyl group-containing monomer include unsaturated carboxylic acids such as unsaturated monocarboxylic acids, unsaturated dicarboxylic acids, and unsaturated tricarboxylic acids, etc., which have one or more carboxyl groups in the molecule. there is. Here, examples of unsaturated monocarboxylic acids include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, and cinnamic acid. Examples of unsaturated dicarboxylic acids include maleic acid, fumaric acid, itaconic acid, citraconic acid, and mesaconic acid. The unsaturated polyhydric carboxylic acid may be an acid anhydride, and specific examples include maleic anhydride, itaconic anhydride, and citraconic anhydride. In addition, the unsaturated polyhydric carboxylic acid may be its mono(2-methacryloyloxyalkyl) ester, for example, mono(2-acryloyloxyethyl) succinic acid, mono(2-methacryloyloxyethyl succinic acid), ), mono(2-acryloyloxyethyl) phthalate, mono(2-methacryloyloxyethyl) phthalate, etc. The unsaturated polycarboxylic acid may be a mono(meth)acrylate of the dicarboxylic polymer at both ends, and examples include ω-carboxypolycaprolactone monoacrylate, ω-carboxypolycaprolactone monomethacrylate, etc. . These carboxyl group-containing monomers can be used individually or in combination of two or more types. Other monomers copolymerizable with the carboxyl group-containing monomer include, for example, styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, p-chlorostyrene, o-methoxystyrene, and m-methoxystyrene. Toxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, p-vinylbenzyl methyl ether, o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p- aromatic vinyl compounds such as vinylbenzyl glycidyl ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, n-butylacrylate, n-butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-hydroxy Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2- Hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, Allyl acrylate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxy Ethyl methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol Methacrylate, methoxypropylene glycol acrylate, methoxypropylene glycol methacrylate, methoxydipropylene glycol acrylate, methoxydipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopenta Dienyl acrylate, dicyclopentadiethyl methacrylate, adamantyl (meth)acrylate, norbornyl (meth)acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy- Unsaturated carboxylic acid esters such as 3-phenoxypropyl methacrylate, glycerol monoacrylate, and glycerol monomethacrylate; 2-Aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethyl Unsaturated carboxyl such as aminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate, and 3-dimethylaminopropyl methacrylate. acid aminoalkyl esters; Unsaturated carboxylic acid glycidyl esters such as glycidyl acrylate and glycidyl methacrylate; Carboxylic acid vinyl esters such as vinyl acetate, vinyl propionate, vinyl butyrate, and vinyl benzoate; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether, and allyl glycidyl ether; vinyl cyanide compounds such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile, and vinylidene cyanide; unsaturated amides such as acrylamide, methacrylamide, α-chloroacrylamide, N-2-hydroxyethyl acrylamide, and N-2-hydroxyethyl methacrylamide; Maleimide, benzylmaleimide, N-phenylmaleimide. Unsaturated imides such as N-cyclohexylmaleimide; Aliphatic conjugated dienes such as 1,3-butadiene, isoprene, and chloroprene; and a monoacryloyl group or monomethacryloyl group at the end of the polymer molecule chain of polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butylacrylate, poly-n-butyl methacrylate, and polysiloxane. Examples include large monomers with These monomers can be used individually or in combination of two or more types. In particular, as other monomers copolymerizable with the carboxyl group-containing monomer, bulky monomers such as monomers having a norbornyl skeleton, monomers having an adamantane skeleton, and monomers having a rosin skeleton are preferred because they tend to lower the relative dielectric constant value. .

The cardo-based binder resin and/or acrylic alkali-soluble resin of the present invention preferably has an acid value in the range of 20 to 200 (KOH mg/g). If the acid value is in the above range, the solubility in the developer improves, the non-exposed portion is easily dissolved and the sensitivity increases, and as a result, the pattern of the exposed portion remains during development, thereby improving the film remaining ratio, which is desirable. Here, the acid value is a value measured as the amount (mg) of potassium hydroxide required to neutralize 1 g of acrylic polymer, and can usually be obtained by titration using an aqueous potassium hydroxide solution. In addition, the weight average molecular weight in terms of polystyrene (hereinafter simply referred to as 'weight average molecular weight') measured by gel permeation chromatography (GPC; using tetrahydrofuran as an elution solvent) is 2,000 to 200,000, preferably 3,000 to 100,000. Cardo-based binder resin or acrylic-based alkali-soluble resin is preferred. When the molecular weight is within the above range, the hardness of the coating film is improved, the residual film rate is high, the solubility of non-exposed portions in the developer is excellent, and resolution tends to be improved, which is preferable.

The molecular weight distribution [weight average molecular weight (Mw)/number average molecular weight (Mn)] of the cardo-based binder resin and/or acrylic alkali-soluble resin is preferably 1.0 to 6.0, and more preferably 1.5 to 6.0. It is preferable that the molecular weight distribution [weight average molecular weight (Mw)/number average molecular weight (Mn)] is 1.5 to 6.0 because developability is excellent.

The binder resin of the present invention can be used in an amount of 5 to 85% by weight, preferably 5 to 60% by weight, based on the total weight of solid content in the blue photosensitive resin. If the content of the binder resin is within the above range, it has sufficient solubility in the developing solution, so it is difficult for development residues to occur on the substrate in the non-pixel portion, and it is difficult for film reduction in the pixel portion of the exposed area to occur during development, resulting in omission of the non-pixel portion. This is desirable because it tends to be good.

photopolymerizable compound

The photopolymerizable compound contained in the blue photosensitive resin composition of the present invention is a compound that can be polymerized by the action of light and a photopolymerization initiator described later, and includes monofunctional monomers, difunctional monomers, and other polyfunctional monomers. Specific examples of monofunctional monomers include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate, and N-vinylpyrroli. Examples include money, etc. Specific examples of bifunctional monomers include 1,6-hexanediol di(meth)acrylate, ethylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, Bis(acryloyloxyethyl)ether of bisphenol A, 3-methylpentanediol di(meth)acrylate, etc. are mentioned. Specific examples of other polyfunctional monomers include trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol penta(meth)acrylate, and dipenta. Erythritol hexa(meth)acrylate, etc. can be mentioned. Among these, polyfunctional monomers having two or more functions are preferably used. The photopolymerizable compound may be included in an amount of 5 to 50% by weight, preferably 5 to 45% by weight, based on the total weight of solids in the blue photosensitive resin composition. When the photopolymerizable compound is contained within the above-mentioned range, there is no decrease in photosensitivity, the strength of the film is sufficient, there is no loss of the pattern during development, good pattern construction is achieved even in the fine pattern area, and the smoothness of the resist is good. It is desirable because there is a tendency.

photopolymerization initiator

The photopolymerization initiator used in the present invention may include at least one selected from the compounds represented by Formulas 3 to 5 below, and includes the compounds represented by Formulas 3 to 5 to form a photosensitive resin composition. It has the effect of initiating a radical reaction, causing hardening, and improving sensitivity.

[Formula 3]

In Formula 3, R ₈ is a hydrogen atom, a halogen atom, a hydroxyl group, a phenyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, a benzyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, or an alkyl group having 1 to 12 carbon atoms. It may be a substituted or unsubstituted naphthyl group or -SR ^a , and R ^a may be hydrogen, an alkyl group having 1 to 12 carbon atoms, or a benzyl group.

R ₉ to R ₁₂ are each independently a hydrogen atom, a halogen atom, a hydroxyl group, a phenyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, a benzyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, or a C 1 to 12 alkyl group. It is a naphthyl group substituted or unsubstituted with an alkyl group of 12, and R11 and R12 may form a ring.

Examples of compounds represented by Formula 3 include 2-methyl-2-amino(4-morpholinophenyl)ethan-1-one, 2-ethyl-2-amino(4-morpholinophenyl)ethan-1-one, , 2-propyl-2-amino(4-morpholinophenyl)ethan-1-one, 2-butyl-2-amino(4-morpholinophenyl)ethan-1-one, 2-methyl-2-amino (4-morpholinophenyl)propan-1-one, 2-methyl-2-amino(4-morpholinophenyl)butan-1-one, 2-ethyl-2-amino(4-morpholinophenyl) Propan-1-one, 2-ethyl-2-amino (4-morpholinophenyl) butan-1-one, 2-methyl-2-methylamino (4-morpholinophenyl) propan-1-one, 2 -Methyl-2-dimethylamino(4-morpholinophenyl)propan-1-one, 2-methyl-2-diethylamino(4-morpholinophenyl)propan-1-one, etc.

[Formula 4]

In Formula 4 above,

The structure of R ₁₄ is, for example, hydrogen, alkyl with 1 to 20 carbon atoms, cycloalkyl with 3 to 8 carbon atoms, or unsubstituted or substituted phenyl, , where n is an integer from 1 to 4, and m is an integer from 1 to 6;

R ₁₅ is an alkyl group having 1 to 8 carbons, a phenyl group, a substituted phenyl group, a benzyl group, or a substituted benzyl group;

R ₁₃ is a diphenyl sulfide group, a substituted diphenyl sulfide group, a carbazole group, a substituted carbazole group, a fluorene group, or a substituted fluorene group.

[Formula 5]

In Formula 5, R ₁₆ , R ₁₇ and R ₁₈ each independently represent R, OR, COR, SR, CONRR', ROR' or CN;

R and R' represent an alkyl group with 1 to 20 carbon atoms, an aryl group with 6 to 30 carbon atoms, an aralkyl group with 7 to 30 carbon atoms, or a heterocyclic group with 2 to 20 carbon atoms, and they represent a halogen atom and/or a heterocyclic group with 2 to 20 carbon atoms. It may be substituted with a ring, and among these, the alkylene portion of the alkyl group and aralkyl group may be interrupted by an unsaturated bond, an ether bond, a thioether bond, and an ester bond, and R and R' may form a ring together. There is;

Y ₁ represents an oxygen atom, a sulfur atom, or a selenium atom,

r represents an integer from 0 to 5;

s represents 0 or 1;

R ₁₉ , R ₂₀ , R ₂₁ and R ₂₂ each independently represent a hydrogen atom, a halogen atom or an alkyl group having 1 to 8 carbon atoms;

X _{1 and} may be substituted with a heterocyclic group, and among these, the alkylene portion of the alkyl group and aralkyl group may be interrupted by an unsaturated bond, an ether bond, a thioether bond, and an ester bond;

X ₂ may form a ring with the carbon atom of an adjacent ring, and more specifically, may form an aromatic ring having 6 to 30 carbon atoms;

Y ₂ and Y ₃ each independently represent an oxygen atom, a sulfur atom, or a selenium atom.

Preferably, the alkyl groups represented by R and R' include, for example, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, amyl, isoamyl, tert-amyl, hexyl, and heptyl. , octyl, isooctyl, 2-ethylhexyl, tert-octyl, nonyl, isononyl, decyl, isodecyl, vinyl, aryl, butenyl, ethynyl, propynyl, methoxyethyl, ethoxyethyl, propyoxyethyl, Methoxyethoxyethyl, ethoxyethoxyethyl, propyoxyethoxyethyl, methoxypropyl, monofluoromethyl, difluoromethyl, trifluoromethyl, trifluoroethyl, perfluoroethyl, 2-( Examples include benzoxazol-2'-yl)ethenyl, and among these, an alkyl group having 1 to 8 carbon atoms is preferable.

In addition, examples of the aryl group represented by R and R' include phenyl, toryl, xylyl, ethylphenyl, chlorophenyl, naphthyl, anthryl, phenanthrenyl, etc., and among them, a carbon atom Aryl groups with numbers 6 to 12 are preferable. In addition, the aralkyl group represented by R and R' is preferably an aralkyl group having 7 to 13 carbon atoms, such as benzyl, chlorobenzyl, α-methylbenzyl, α,α-dimethylbenzyl, phenylethyl, and phenylethenyl. I can hear it. Examples of the heterocyclic group represented by R and R' include preferably heterocyclic groups having 5 to 7 carbon atoms, such as pyridyl, pyrimidyl, furyl, and thiophenyl. Also, examples of the ring that can be formed by combining R and R' include rings having 5 to 7 carbon atoms, such as a piperidine ring and a morpholine ring. In addition, R and R' may be substituted with halogen elements such as fluorine, chlorine, bromine, or iodine, or may be substituted with pyridyl, pyrimidyl, furyl, benzoxazol-2-yl, tetrahydropyranyl, pyrrolidyl, or pyrrolidyl. Dazolidyl, pyrazolidyl, thiazolidyl, isothiazolidyl, oxazolidyl, isoxazolidyl, piperidyl, pipera It may be substituted with a heterocyclic group having 5 to 7 carbon atoms, such as piperadyl or morpholinyl.

Preferably, the alkyl groups represented by X _{1 and} Heptyl, octyl, isooctyl, 2-ethylhexyl, tert-octyl, nonyl, isononyl, decyl, isodecyl, vinyl, aryl, butenyl, ethynyl, propynyl, methoxyethyl, ethoxyethyl, propyoxyethyl. , methoxyethoxyethyl, ethoxyethoxyethyl, propyoxyethoxyethyl, methoxypropyl, monofluoromethyl, difluoromethyl, trifluoromethyl, trifluoroethyl, perfluoroethyl, 2- (benzooxazol-2'-yl)ethenyl, etc. are mentioned, and among them, an alkyl group having 1 to 8 carbon atoms is preferable.

In addition, examples of _the aryl groups represented by X ₁ and Among these, an aryl group having 6 to 12 carbon atoms is preferable. In addition _, as the aralkyl group represented by X ₁ and It can be heard. Examples of the heterocyclic groups represented by X _{1 and} pyrazolidyl, thiazolidyl, isothiazolidyl, oxazolidyl, isoxazolidyl, piperidyl, piperadyl, mor Preferred examples include heterocyclic groups having 5 to 7 carbon atoms, such as polynyl and thiophenyl.

Additionally, halogen atoms represented by X ₁ and X ₂ include fluorine, chlorine, bromine, and iodine.

In addition, the alkyl groups represented by X _{1 and} , isooctyl, 2-ethylhexyl, and tert-octyl.

X ₂ can form a ring with the carbon atom of an adjacent ring, and more specifically, it can form an aromatic ring with 6 to 30 carbon atoms or a cyclo compound with 5 to 10 carbon atoms.

Halogen atoms represented by R ₁₉ , R ₂₀ , R ₂₁ and R ₂₂ include fluorine, chlorine, bromine and iodine.

The alkyl group represented by R ₁₉ , R ₂₀ , R ₂₁ and R ₂₂ is methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, amyl, isoamyl, tert-amyl, hexyl, heptyl, Octyl, isooctyl, 2-ethylhexyl, and tert-octyl can be mentioned.

The compound represented by Formula 5 may be the following compound.

Additionally, it is preferable to contain an acetophenone-based compound as a photopolymerization initiator. Acetophenone-based compounds include, for example, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 2-hydroxy-1-[4-(2) -Hydroxyethoxy)phenyl]-2-methylpropan-1-one, 1-hydroxycyclohexylphenylketone, 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropane-1- one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one, 2-hydroxy-2-methyl[4-(1-methylvinyl)phenyl]propane-1- oligomers, etc., and preferably 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one.

In addition, the photopolymerization initiator represented by the formulas 3 to 5 may include structures represented by the following formulas 5-1 to 5-8.

[Formula 5-1]

[Formula 5-2]

[Formula 5-3]

[Formula 5-4]

[Formula 5-5]

[Formula 5-6]

[Formula 5-7]

[Formula 5-8]

Additionally, photopolymerization initiators other than the acetophenone series can be used in combination.

Photopolymerization initiators other than acetophenone series include active radical generators, sensitizers, and acid generators that generate active radicals by irradiating light. Examples of active radical generators include benzoin-based compounds, benzophenone-based compounds, thioxanthone-based compounds, and triazine-based compounds.

Examples of the benzoin-based compounds include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoisobutyl ether. Examples of benzophenone-based compounds include benzophenone, o-benzoylmethyl benzoate, 4-phenylzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, and 3,3',4,4'-tetra ( t-butylperoxycarbonyl)benzophenone, 2,4,6-trimethylbenzophenone, etc. are mentioned.

Examples of the thioxanthone-based compounds include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, and 1-chlorothioxanthone. -4-propoxythioxanthone, etc. can be mentioned.

Examples of the triazine-based compounds include 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis(trichloromethyl) )-6-(4-methoxynaphthyl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-(4-methoxystyryl)-1,3,5- Triazine, 2,4-bis(trichloromethyl)-6-[2-(5-methylfuran-2-yl)ethenyl]-1,3,5-triazine, 2,4-bis(trichloro Methyl)-6-[2-(furan-2-yl)ethenyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(4-diethylamino -2-methylphenyl)ethenyl]-1,3,5-triazine,2,4-bis(trichloromethyl)-6-[2-(3,4dimethoxyphenyl)ethenyl]-1,3, 5-triazine, etc. can be mentioned.

Examples of the active radical generator include 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 2,2,-bis(o-chlorophenyl)-4,4', 5,5'-tetra Phenyl-1,2'-biimidazole, 10-butyl-2-chloroacridone, 2-ethylanthraquinone, benzyl, 9,10-phenanthrenequinone, camphorquinone, methyl phenylglyoxylate, titanocene Compounds, etc. can be used. Examples of the acid generator include 4-hydroxyphenyldimethylsulfonium p-toluenesulfonate, 4-hydroxyphenyldimethylsulfonium hexafluoroantimonate, and 4-acetoxyphenyldimethylsulfonium p-toluenesulfonate. Nate, 4-acetoxyphenylmethylbenzylsulfonium hexafluoroantimonate, triphenylsulfonium p-toluenesulfonate, triphenylsulfonium hexafluoroantimonate, diphenyliodonium p-toluenesulfonate, Onium salts such as diphenyl iodonium hexafluoroantimonate, nitrobenzyl tosylate, and benzoin tosylate can be mentioned.

In addition, among the above compounds as active radical generators, there are compounds that generate acids simultaneously with active radicals. For example, triazine-based photopolymerization initiators are also used as acid generators.

The photopolymerization initiator may be included in an amount of 0.1 to 20% by weight, preferably 0.3 to 15% by weight, based on the total weight of solids in the blue photosensitive resin. If it is within the above range, the blue photosensitive resin composition becomes highly sensitive and the intensity of the pixel portion formed using this composition and the smoothness on the surface of this pixel portion tend to be good, so it is preferable.

Furthermore, a photopolymerization initiation aid can be used in the present invention. A photopolymerization initiation aid may be used in combination with a photopolymerization initiator, and is a compound used to promote polymerization of a photopolymerizable compound whose polymerization has been initiated by the photopolymerization initiator.

Examples of photopolymerization initiation aids include amine-based compounds, alkoxyanthracene-based compounds, and thioxanthone-based compounds.

Amine-based compounds include, for example, triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, and 2-dimethylamino benzoate. Ethyl, 4-dimethylaminobenzoic acid 2-ethylhexyl, N,N-dimethylparatoluidine, 4,4'-bis(dimethylamino)benzphenone (common name, Michler's ketone), 4,4'-bis(diethyl) Amino)benzophenone, 4,4'-bis(ethylmethylamino)benzophenone, etc. are mentioned, and among these, 4,4'-bis(diethylamino)benzophenone is preferable.

Alkoxyanthracene compounds include, for example, 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, and 2-ethyl-9,10-diethoxyanthracene. etc. can be mentioned.

Thioxanthone-based compounds include, for example, 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, and 1-chloro- 4-propoxythioxanthone, etc. can be mentioned.

There is no problem even if the photopolymerization initiator (D) is used individually or in combination of multiple photopolymerization initiators. Additionally, a commercially available photopolymerization initiation aid can be used. Examples of the commercially available photopolymerization initiation aid include the brand name "EAB-F" (manufacturer: Hodogaya Chemical Co., Ltd.).

When using these photopolymerization initiation aids, the amount used is usually 10 mol or less, preferably 0.01 to 5 mol, per mole of photopolymerization initiator. If it is within the above range, the sensitivity of the blue photosensitive resin composition increases and the productivity of the color filter formed using this composition tends to improve, so it is preferable.

UV absorber

In the present invention, it was confirmed that the UV absorber not only controls the size of the pattern, but also has the effect of increasing quantum efficiency by preventing yellowing that occurs during the high-temperature process.

In general, UV absorbers are known to be used when the CD bias of the photosensitive resin composition increases and fine patterns cannot be realized. At this time, CD refers to the embossed portion of the pattern, and CD bias refers to the degree to which the size of the formed pattern is larger than the mask pattern to be implemented. When a UV absorber is added, the CD bias caused by diffraction can be reduced by absorbing some of the UV, making it possible to implement the desired pattern.

In addition, due to the weak heat resistance of quantum dots, it is difficult to maintain a high luminescence intensity during the color filter manufacturing process. At this time, if a UV absorber is added, high luminous intensity can be maintained even after several post-bakes.

The UV absorber according to the present invention includes at least one of benzotriazole-based and triazine-based.

As the benzotriazole-based UV absorber, known compounds can be used. Specifically, octyl 3-[3-tert-butyl-4-hydroxy-5-(5-chloro-2H-benzotriazol-2-yl)phenyl]propionate, 2-ethylhexyl 3-(3 -tert-butyl-4-hydroxy-5-(5-chloro-2H-benzotriazol-2-yl)phenyl)propionate, [3-[3-(2H-benzotriazol-2-yl) -5-(1,1-methylethyl)-4-hydroxyphenyl]-1-oxopropyl]-w-[3-[3-(2H-benzotriazol-2-yl)-5-(1, 1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropoxy]poly(oxy-1,2-ethanediyl), (3-(3-(2H-benzotriazol-2-yl)- 5-(1,1-dimethylethyl)-4-hydroxyphenyl)-1-oxopropyl)-hydroxypoly(oxo-1,2-ethanediyl), 2-(2H-benzotriazole-2- 1)-4,6-ditertpentylphenol, 3-(2H-benzotriazolyl)-5-(1,1-dimethylethyl)-4-hydroxy-benzinepropionic acid octyl ester, 2-(2H-benzotria) Zol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2H-benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl) -4-(1,1,3,3-tetramethylbutyl)phenol, etc. are preferred.

As the triazine-based UV absorber, known compounds can be used. Specifically, 2-(4,6-dimethyl-1,3,5-triazin-2-yl)-5-((hexyl)oxy)-phenol, 2-(4-(2-hydroxy-3 -tridecyloxypropyl)oxy)-2-hydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(4-(2-hydroxy- 3-Didecyloxypropyl)oxy)-2-hydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4- (3-(2-ethylhexyl-1-oxy)-2-hydroxypropyloxy)phenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,2 '-[6-(2,4-dibutoxyphenyl)-1,3,5-triazine-2,4-diyl]bis(5-butoxyphenol), 6-methylheptyl 2-{4- [4,6-di(4-biphenylyl)-1,3,5-triazin-2-yl]-3-hydroxyphenoxy}propanoate, etc. are mentioned.

The content of the UV absorber is preferably 0.001 to 10% by weight, preferably 0.025 to 7% by weight, based on the total weight of solids in the blue photosensitive resin. When the content of the UV absorber is within the above range, the effect of the absorber can be improved, and a pattern can be well formed without interfering with the action of the photopolymerization initiator.

solvent

The solvent contained in the blue photosensitive resin composition of the present invention is not particularly limited, and various organic solvents used in the field of blue photosensitive resin compositions can be used. Specific examples thereof include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, and diethylene. Diethylene glycol dialkyl ethers such as glycol dipropyl ether and diethylene glycol dibutyl ether, ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol Alkylene glycol alkyl ether acetates such as monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate, and methoxypentyl acetate, aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene, methyl ethyl ketone, and acetone. , Ketones such as methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone, alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, and glycerin, ethyl 3-ethoxypropionate, and 3-methoxy Ester, such as methyl propionate, and cyclic ester, such as γ-butyrolactone, are mentioned. Among the above solvents, organic solvents having a boiling point of 100 to 200 are preferred in terms of coating properties and drying properties, and more preferred are alkylene glycol alkyl ether acetates, ketones, and ethyl 3-ethoxypropionate. esters such as methyl 3-methoxypropionate, and more preferably esters such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate, and 3-methoxy. Methyl propionate, etc. can be mentioned. These solvents can be used individually or in mixture of two or more types.

The content of the solvent in the blue photosensitive resin composition of the present invention may be 60 to 90% by mass, preferably 60 to 85% by mass, based on the total weight of the blue photosensitive resin composition. If the solvent content is within the above range, it is preferable because the coating properties tend to be good when applied with a coating device such as a roll coater, spin coater, slit and spin coater, slit coater (sometimes called a die coater), or inkjet. .

additive

The blue pattern layer blue photosensitive resin composition according to the present invention may contain fillers, other polymer compounds, and pigment dispersants as needed. It may additionally contain additives such as adhesion promoters, antioxidants, ultraviolet absorbers, and anti-aggregation agents.

Specific examples of the other polymer compounds include curable resins such as epoxy resins and maleimide resins, and thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, polyester, and polyurethane. You can.

As the pigment dispersant, commercially available surfactants can be used, and examples include silicone-based, fluorine-based, ester-based, cationic, anionic, nonionic, and amphoteric surfactants. These may be used individually or in combination of two or more types.

Examples of the above surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkyl ethers, polyethylene glycol diesters, sorbitan fatty esters, fatty acid-modified polyesters, and tertiary amine-modified polyurethanes. , polyethylene imines, etc. In addition, product names include KP (manufactured by Shin-Etsu Chemical Co., Ltd.), POLYFLOW (manufactured by Kyoeisha Chemical Co., Ltd.), EFTOP (manufactured by Tochem Products Co., Ltd.), MEGAFAC (manufactured by Dainipbon Ink Chemicals Co., Ltd.), Flourad (manufactured by Sumitomo 3M Co., Ltd.), Asahi guard, Surflon (manufactured by Asahi Glass Co., Ltd.), brush Examples include SOLSPERSE (manufactured by Zeneca Co., Ltd.), EFKA (manufactured by EFKA Chemicals Co., Ltd.), and PB 821 (manufactured by Ajinomoto Co., Ltd.).

As the adhesion promoter, for example, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris(2-methoxyethoxy)silane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminoprotriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2 -(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyl Trimethoxysilane, etc. can be mentioned. Specific examples of antioxidants include 2,2'-thiobis(4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like.

Specific examples of the ultraviolet absorber include 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzothyriazole, alkoxybenzophenone, and the like.

Specific examples of the anti-agglomeration agent include sodium polyacrylate.

The above additives can be appropriately added and used by those skilled in the art as long as they do not impair the effect of the present invention. For example, the additive may be used in an amount of 0.05 to 10 parts by weight, preferably 0.1 to 10 parts by weight, and more preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the blue photosensitive resin composition, but is not limited thereto.

The blue photosensitive resin composition according to the present invention can be produced, for example, by the following method. Scattering particles are mixed in advance with a solvent and dispersed using a bead mill, etc., until the average particle diameter is 30 to 300 nm. At this time, a dispersant may be additionally used as needed, and part or all of the binder resin may be mixed. To the obtained dispersion (hereinafter sometimes referred to as mill base), the remainder of the binder resin, a photopolymerizable compound, a photopolymerization initiator, other components used as needed, and additional solvents as necessary are added to reach a predetermined concentration. The desired blue photosensitive resin composition can be obtained.

<Color filter and image display device>

Another aspect of the present invention relates to a color filter including a blue pattern layer including a cured product of the above-described blue photosensitive resin composition for forming a blue pattern layer.

Since the color filter according to the present invention is manufactured with the above-described blue photosensitive resin composition for forming a blue pattern layer instead of blue quantum dots, the manufacturing cost can be reduced and an excellent viewing angle can be secured.

In addition, the blue photosensitive resin composition of the present invention includes a UV absorber containing at least one of benzotriazole-based, triazine-based, and benzophenone-based, thereby comprising a blue pattern layer manufactured using the blue photosensitive resin composition of the present invention. The color filter has excellent thermal resistance, so yellowing does not occur at high temperatures, so there is no change in luminous intensity, and it is possible to form fine patterns of constant values, making it possible to implement color filters that improve the problem of poor implementation of fine pixels, especially self-luminous color filters. can do.

The color filter includes a substrate and a blue pattern layer formed on top of the substrate.

The substrate may be the color filter itself, or may be a portion where the color filter is located in a display device, etc., but is not particularly limited. The substrate may be glass, silicon (Si), silicon oxide (SiOx), or a polymer substrate. The polymer substrate may be polyethersulfone (PES) or polycarbonate (PC).

The blue pattern layer is a layer containing the blue photosensitive resin composition of the present invention, and may be a layer formed by applying the blue photosensitive resin composition for forming the blue pattern layer, exposing, developing, and heat curing in a predetermined pattern, and the pattern layer Can be formed by performing methods commonly known in the art.

In another embodiment of the present invention, the color filter may further include one or more selected from the group consisting of a red pattern layer and a green pattern layer.

In another embodiment of the present invention, the red pattern layer or the green pattern layer may include quantum dots and/or scattering particles. Specifically, the color filter according to the present invention may include a red pattern layer including red quantum dots or a green pattern layer including green quantum dots, and the red pattern layer or the green pattern layer may include scattering particles. The red pattern layer or the green pattern layer may emit red light or blue light, respectively, by a light source that emits blue light, which will be described later.

In another embodiment of the present invention, the scattering particles included in the red pattern layer or the green pattern layer may include metal oxides with an average particle diameter of 30 to 500 nm, and information regarding the scattering particles and metal oxides is provided in this document. The information regarding scattering particles and metal oxides contained in the blue photosensitive resin composition according to the invention can be applied.

In the present invention, the shape, composition, and content of the quantum dots included in the red pattern layer or the green pattern layer are not limited, and quantum dots commonly used in the art can be applied.

The color filter including the substrate and pattern layer described above may further include partitions formed between each pattern, and may further include a black matrix, but is not limited thereto.

In the present invention, the color filter may be a self-luminous color filter.

Another aspect of the present invention is the color filter described above; and a light source that emits blue light. It relates to an image display device including a light source. In short, the image display device according to the present invention includes a color filter including a blue pattern layer including a cured product of the above-described blue photosensitive resin composition and a light source that emits blue light.

The color filter of the present invention can be applied to various image display devices such as electroluminescence display devices, plasma display devices, and field emission display devices, as well as ordinary liquid crystal display devices.

When the image display device includes the light source and a color filter including a blue pattern layer according to the present invention, there is an advantage of having excellent luminous intensity or viewing angle. Additionally, since the blue pattern layer included in the color filter according to the present invention does not include blue quantum dots, there is an advantage in that an image display device can be manufactured with a low manufacturing cost.

Hereinafter, examples will be given in detail to explain the present specification in detail. However, the embodiments according to the present specification may be modified into various other forms, and the scope of the present specification is not to be construed as being limited to the embodiments described in detail below. The embodiments of this specification are provided to more completely explain the present specification to those with average knowledge in the art. In addition, "%" and "part" indicating content below are based on weight, unless otherwise specified.

Synthesis example: Synthesis of binder resin

Preparation Example 1: Acrylic alkali-soluble resin

A flask equipped with a stirrer, thermometer reflux cooling tube, dropping funnel, and nitrogen introduction tube was prepared, and as a monomer dropping funnel, 74.8 g (0.20 mol) of benzylmaleimide, 43.2 g (0.30 mol) of acrylic acid, and 118.0 mol of vinyl toluene were added. g (0.50 mol), 4 g of t-butylperoxy-2-ethylhexanoate, and 40 g of propylene glycol monomethyl ether acetate (PGMEA) were added and stirred to prepare, and as a chain transfer agent dropping tank, n-dodecanethiol was added. 6g and 24g of PGMEA were added and mixed with stirring. Afterwards, 395 g of PGMEA was introduced into the flask, the atmosphere inside the flask was changed from air to nitrogen, and the temperature of the flask was raised to 90°C while stirring. Next, dropping of the monomer and chain transfer agent was started from the dropping lot. Dropping was carried out for 2 h while maintaining 90°C, and after 1 h, the temperature was raised to 110°C and maintained for 3 h, and then a gas introduction tube was introduced to perform bubbling of the oxygen/nitrogen = 5/95 (v/v) mixed gas. started. Next, 28.4 g of glycidyl methacrylate [(0.10 mol), (33 mol% based on the carboxyl group of acrylic acid used in this reaction)], 2,2'-methylenebis(4-methyl-6-t-butylphenol) ) 0.4 g and 0.8 g of triethylamine were added into the flask, reaction was continued at 110°C for 8 hours, and Resin A with a solid acid value of 70 mgKOH/g was obtained. The weight average molecular weight in terms of polystyrene measured by GPC was 16,000, and the molecular weight distribution (Mw/Mn) was 2.3.

Preparation Example 2: Synthesis of a compound of Formula 1-1-1

364.4 g of 3',6''-dihydroxyspiro(fluorene-9,9-xantene) and t-butylammonium in a 3000ml three-necked round flask. 0.4159 g of bromide was mixed, 2359 g of epichlorohydrin was added, and the mixture was reacted by heating to 90° C. When 3,6-dihydroxyspiro(fluorene-9,9-xanthene) was completely consumed by analysis by liquid chromatography. Cooled to 30°C, 50% NaOH aqueous solution (3 equivalents) was slowly added. When epichlorohydrin was completely consumed by analysis by liquid chromatography, extraction was performed with dichloromethane, washed with water three times, and the organic layer was dried with magnesium sulfate. Afterwards, dichloromethane was distilled under reduced pressure and recrystallized using a mixture ratio of dichloromethane and methanol of 50:50.

1 equivalent of the epoxy compound synthesized in this way was mixed with 0.004 equivalents of t-butylammonium bromide, 0.001 equivalents of 2,6-diisobutylphenol, and 2.2 equivalents of acrylic acid, and then 24.89 g of the solvent propylene glycol monomethyl ether acetate was added and mixed. The reaction solution was dissolved by heating to a temperature of 90 to 100°C while blowing air at 25 ml/min. While the reaction solution was cloudy, it was heated to 120°C and completely dissolved. When the solution became transparent and the viscosity increased, the acid value was measured and stirred until the acid value was less than 1.0 mgKOH/g. It took 11 hours for the acid value to reach the target (0.8). After completion of the reaction, the temperature of the reactor was lowered to room temperature to obtain a colorless and transparent compound of formula 1-1-1.

[Formula 1-1-1]

Preparation Example 3: Synthesis of a compound of formula 1-1-2

3',6'-dihydroxyspiro(fluorene-9,9-xantene) of Chemical Formula 2-1 (3',6''-dihydroxyspiro(fluorene-9,9-xantene)) 364.4g in a 3000ml three-necked round flask. and 0.4159 g of t-butylammonium bromide were mixed, 2359 g of epichlorohydrin was added, and heated to 90° C. for reaction. Analysis was performed by liquid chromatography to determine 3,6-dihydroxyspiro(fluorene-9,9-xanthene). ) was completely consumed, it was cooled to 30°C and 50% NaOH aqueous solution (3 equivalents) was slowly added. When epichlorohydrin was completely consumed as analyzed by liquid chromatography, it was extracted with dichloromethane, washed with water three times, and the organic layer was After drying with magnesium sulfate, dichloromethane was distilled under reduced pressure and recrystallized using a mixture ratio of dichloromethane and methanol of 50:50.

1 equivalent of the epoxy compound synthesized in this way was mixed with 0.004 equivalents of t-butylammonium bromide, 0.001 equivalents of 2,6-diisobutylphenol, and 2.2 equivalents of methacrylic acid, and then 24.89 g of the solvent propylene glycol monomethyl ether acetate was added and mixed. The reaction solution was dissolved by heating to a temperature of 90 to 100°C while blowing air at 25 ml/min. While the reaction solution was cloudy, it was heated to 120°C and completely dissolved. When the solution became transparent and the viscosity increased, the acid value was measured and stirred until the acid value was less than 1.0 mgKOH/g. It took 11 hours for the acid value to reach the target (0.8). After completion of the reaction, the temperature of the reactor was lowered to room temperature to obtain a colorless and transparent compound of the formula 1-1-2.

[Formula 1-1-2]

Preparation Example 4: Synthesis of compound of formula 1-2-1

364.4g of 4,4'-(9H-xanthene-9,9-diyl)diphenol) and t-butylammonium bromide in a 3000ml three-necked round flask. 0.4159g was mixed, 2359g of epichlorohydrin was added, and heated to 90°C for reaction. When 4,4'-(9H-xanthene-9,9-diyl)diphenol (4,4'-(9Hxanthene-9,9-diyl)diphenol) is completely consumed by analysis by liquid chromatography, cool to 30℃. 50% NaOH aqueous solution (3 equivalents) was added slowly. When epichlorohydrin is completely consumed by analysis by liquid chromatography, extraction is performed with dichloromethane, washed with water three times, the organic layer is dried with magnesium sulfate, dichloromethane is distilled under reduced pressure, and dichloromethane and methanol are mixed in a mixing ratio of 50:50. It was decided again. 1 equivalent of the epoxy compound synthesized in this way was mixed with 0.004 equivalents of t-butylammonium bromide, 0.001 equivalents of 2,6-diisobutylphenol, and 2.2 equivalents of acrylic acid, and then 24.89 g of the solvent propylene glycol monomethyl ether acetate was added and mixed. The reaction solution was dissolved by heating to a temperature of 90 to 100°C while blowing air at 25 ml/min. While the reaction solution was cloudy, it was heated to 120°C and completely dissolved. When the solution became transparent and the viscosity increased, the acid value was measured and stirred until the acid value was less than 1.0 mgKOH/g. It took 11 hours for the acid value to reach the target (0.8). After completion of the reaction, the temperature of the reactor was lowered to room temperature to obtain a colorless and transparent compound of Chemical Formula 1-2-1.

[Formula 1-2-1]

Preparation Example 5: Synthesis of compound of formula 1-2-2

364.4g of 4,4'-(9H-xanthene-9,9-diyl)diphenol) and t-butylammonium bromide in a 3000ml three-necked round flask. 0.4159 g was mixed, 2359 g of epichlorohydrin was added, and heated to 90°C for reaction. When 4,4'-(9Hxanthene-9,9-diyl)diphenol (4,4'-(9Hxanthene-9,9-diyl)diphenol) is completely consumed by analyzing by liquid chromatography, cool to 30℃ and cool to 50℃. % NaOH aqueous solution (3 equiv) was added slowly. When epichlorohydrin is completely consumed by analysis by liquid chromatography, extraction is performed with dichloromethane, washed with water three times, the organic layer is dried with magnesium sulfate, dichloromethane is distilled under reduced pressure, and dichloromethane and methanol are mixed in a mixing ratio of 50:50. It was decided again. 1 equivalent of the epoxy compound synthesized in this way was mixed with 0.004 equivalents of t-butylammonium bromide, 0.001 equivalents of 2,6-diisobutylphenol, and 2.2 equivalents of methacrylic acid, and then 24.89 g of the solvent propylene glycol monomethyl ether acetate was added and mixed. The reaction solution was dissolved by heating to a temperature of 90 to 100°C while blowing air at 25 ml/min. While the reaction solution was cloudy, it was heated to 120°C and completely dissolved. When the solution became transparent and the viscosity increased, the acid value was measured and stirred until the acid value was less than 1.0 mgKOH/g. It took 11 hours for the acid value to reach the target (0.8). After completion of the reaction, the temperature of the reactor was lowered to room temperature to obtain a colorless and transparent compound of the formula 1-2-2.

[Formula 1-2-2]

Preparation Example 6: Synthesis of cardo-based binder resin (A-1)

307.0 g of the compound of Formula 1-1-1 in Preparation Example 2 was dissolved by adding 600 g of propylene glycol monomethyl ether acetate, then mixed with 78 g of biphenyltetracarboxylic dianhydride and 1 g of tetraethylammonium bromide, and slowly raised to 110 g. Reaction was performed at ~115°C for 4 hours. After confirming the disappearance of the acid anhydride group, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed and reacted at 90°C for 6 hours to polymerize it with a cardo-based binder resin. The disappearance of anhydride was confirmed by IR spectrum. Weight average molecular weight: 3500

Preparation Example 7: Synthesis of cardo-based binder resin (A-2)

307.0 g of the compound of Formula 1-1-2 in Preparation Example 3 was dissolved by adding 600 g of propylene glycol monomethyl ether acetate, then mixed with 78 g of biphenyltetracarboxylic dianhydride and 1 g of tetraethylammonium bromide, and slowly raised to 110 g. Reaction was performed at ~115°C for 4 hours. After confirming the disappearance of the acid anhydride group, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed and reacted at 90°C for 6 hours to polymerize it with a cardo-based binder resin. The disappearance of anhydride was confirmed by IR spectrum. Weight average molecular weight: 3800

Preparation Example 8: Synthesis of cardo-based binder resin (A-3)

307.0 g of the compound of Formula 1-2-1 in Preparation Example 4 was dissolved by adding 600 g of propylene glycol monomethyl ether acetate, then mixed with 78 g of phenyltetracarboxylic dianhydride and 1 g of tetraethylammonium bromide, and the temperature was gradually raised to 110~. Reaction was performed at 115°C for 4 hours. After confirming the disappearance of the acid anhydride group, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed and reacted at 90°C for 6 hours to polymerize it with a cardo-based binder resin. The disappearance of anhydride was confirmed by IR spectrum. Weight average molecular weight: 4500

Preparation Example 9: Synthesis of cardo-based binder resin (A-4)

307.0 g of the compound of Formula 1-2-2 in Preparation Example 5 was dissolved by adding 600 g of propylene glycol monomethyl ether acetate, then mixed with 78 g of phenyltetracarboxylic dianhydride and 1 g of tetraethylammonium bromide, and the temperature was slowly raised to 110~. Reaction was performed at 115°C for 4 hours. After confirming the disappearance of the acid anhydride group, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed and reacted at 90°C for 6 hours to polymerize it with a cardo-based binder resin. The disappearance of anhydride was confirmed by IR spectrum. Weight average molecular weight: 4900

Device: HLC-8120GPC (manufactured by Tosoh Corporation)

Column: TSK-GELG4000HXL + TSK-GELG2000HXL (serial connection)

Column temperature: 40℃

Mobile phase solvent: tetrahydrofuran

Flow rate: 1.0 mL/min

Injection volume: 50 μl

Detector: RI

Measured sample concentration: 0.6% by weight (solvent = tetrahydrofuran)

Standard materials for calibration: TSK STANDARD POLYSTYRENE F-40, F-4, F-1, A-2500, A-500 (manufactured by Tosoh Co., Ltd.)

The ratio of the weight average molecular weight and the number average molecular weight obtained above was defined as molecular weight distribution (Mw/Mn).

Examples 1 to 9 Comparative Examples 1 to 4: Preparation of blue photosensitive resin composition

According to the compositions in Tables 1 to 3 below, the blue photosensitive resin compositions of Examples 1 to 9 and Comparative Examples 1 to 4 were prepared. (Table 1 shows the scattering particles, Table 2 shows the composition of the example, and Table 3 shows the composition and content of the composition of the comparative example.)

⁰⁾ Blue colorant: CI Pigment Blue 15:6

¹⁾ Binder resin:

A-1: Production Example A-1,

A-2: Production Example A-2,

A-3: Production Example A-3,

A-4: Production Example A-4,

A-5: Mono (2-methacryloyloxyalkyl) ester

²⁾ Photopolymerizable compound: Dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)

³⁾ Photopolymerization initiator

D-1: Irgaqure-907 (manufactured by BASF)

D-2: OXE-01 (manufactured by BASF)

D-3: OXE-02 (manufactured by BASF)

D-4: PBG-327 (made by Tronny, formula 5-3)

^{5) )} F-1: TINUVIN 109 (manufactured by BASF) - Benzotriazole type

F-2: TINUVIN 328 (manufactured by BASF) - Benzotriazole series

F-3: TINUVIN 1577 (manufactured by BASF) - triazine series

F-4: TINUVIN 400 (manufactured by BASF) - triazine series

F-5: Chimassorb 81 (manufactured by BASF) - benzophenone series

⁶⁾ Solvent (E): propylene glycol monomethyl ether acetate

⁰⁾ Blue colorant: CI Pigment Blue 15:6

¹⁾ Binder resin:

A-1: Production Example A-1,

A-2: Production Example A-2,

A-3: Production Example A-3,

A-4: Production Example A-4,

A-5: Mono (2-methacryloyloxyalkyl) ester

²⁾ Photopolymerizable compound: Dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)

³⁾ Photopolymerization initiator

D-1: Irgaqure-907 (manufactured by BASF)

D-2: OXE-01 (manufactured by BASF)

D-3: OXE-02 (manufactured by BASF)

D-4: PBG-327 (made by Tronny, formula 5-3)

^{5) )} F-1: TINUVIN 109 (manufactured by BASF) - Benzotriazole type

F-2: TINUVIN 328 (manufactured by BASF) - Benzotriazole series

F-3: TINUVIN 1577 (manufactured by BASF) - triazine series

F-4: TINUVIN 400 (manufactured by BASF) - triazine series

F-5: Chimassorb 81 (manufactured by BASF) - benzophenone series

⁶⁾ Solvent (E): propylene glycol monomethyl ether acetate

Manufacturing of color filters

A color filter was manufactured using the metal oxide photosensitive resin composition prepared in Examples 1 to 9 and Comparative Examples 1 to 4. That is, each of the above photosensitive resin compositions was applied on a glass substrate by spin coating, then placed on a heating plate and maintained at a temperature of 100° C. for 3 minutes to form a thin film.

Next, a test photomask having a 20mm x 20mm square transmission pattern and a line/space pattern of 1 to 100 ㎛ was placed on the thin film and irradiated with ultraviolet rays at a distance of 100 ㎛ from the test photomask.

At this time, the ultraviolet light source was irradiated with an exposure dose of 200 mJ/cm2 (365 nm) under an atmospheric atmosphere using an ultra-high pressure mercury lamp (product name: USH-250D) manufactured by Ushio Denki Co., Ltd., and no special optical filter was used.

The thin film irradiated with ultraviolet light above was developed by immersing it in a KOH aqueous developing solution of pH 10.5 for 80 seconds. The glass plate coated with this thin film was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 150°C for 10 minutes to prepare a color filter pattern. The film thickness of the color pattern prepared above was 5.0 ㎛.

Experimental Example 1: Experiment on color filter development speed, sensitivity, pattern stability, and heat resistance

Color filters manufactured from the blue photosensitive resin compositions of Examples 1 to 9 and Comparative Examples 1 to 4 were evaluated as shown in Table 4 below. The evaluation criteria for each experiment are as follows. Development speed (sec): Time taken for the non-exposed area to first dissolve in the developer during development <Spray Developer HPMJ method>

Sensitivity: The degree to which a tear-free thin film of the sensitivity mask fine pattern (1 to 60) is formed (the lower the number, the better the sensitivity)

Pattern stability: The degree of error in the pattern after exposure of the pattern mask at a low exposure dose (20 to 100 mJ).

Very good: no pattern errors

Excellent: 1-2 pattern errors

Normal: 3 errors in pattern

Defective: 4 or more errors in the pattern

The criterion for judgment is the result of confirmation through an optical microscope of a 3D surface shaper.

Heat resistance evaluation and brightness change: Heat the color filter manufactured by the above method in a heating oven at 230°C for 2 hours and then heat.

To measure the color change before and after, it was calculated using Equation (1), and the change in luminance (ΔY) before and after the heat resistance evaluation was checked to determine whether there was a decrease in luminance due to thermal yellowing.

ΔY (luminance change) degree

○: -0.04 or more and 0.00 or less

X: less than -0.04

Accordingly, looking at Table 4, Examples 1 to 9 had excellent processing effects with a development speed of 15 or less, and excellent sensitivity with 50 or less. There was no pattern error after exposure of the pattern mask, so pattern stability was excellent, and heat resistance was also excellent. Excellence was confirmed.

On the other hand, in the case of Comparative Example 2, the cardo-based binder resin was not included and only acrylic alkali-soluble resin was used, so curing was not easy and peeled off easily, making it impossible to measure the value. , in the case of Comparative Example 3, the photopolymerizable compound was outside the appropriate range, hardening was difficult, and the patterns were peeled in all cases. Additionally, in the case of Comparative Example 4, it was confirmed that there was no UV absorber, making it difficult to control radicals, making it difficult to withstand heat resistance.

Experimental Example 2: Micropattern Formation Experiment

Among the color filters manufactured using the metal oxide photosensitive resins prepared in Examples 1 to 9 and Comparative Examples 1 to 4, the size of the pattern obtained through a line/space pattern mask designed to be 100 ㎛ was measured using OM equipment (ECLIPSE LV100POL Nikon The pattern size was measured through (g).

If the difference between the design value of the line/space pattern mask and the measured value of the obtained fine pattern is more than 20 μm, it becomes difficult to implement fine pixels, problems may occur with straightness and flattening of the pattern, and it is difficult to implement the desired taper. You can.

Accordingly, looking at Table 5, it was confirmed that in the case of Examples 1 to 9, the difference between the design value of the pattern mask and the measured value of the obtained fine pattern was less than 20 μm, making it possible to implement fine pixels, and the pattern characteristics were excellent.

On the other hand, in the case of Comparative Example 2, because it contained only acrylic resin, curing was not easy, a tearing phenomenon occurred, and in the case of Comparative Example 3, it was outside the appropriate range of the photopolymerizable compound, making hardening difficult, and all of the film tearing occurred. woke up. Additionally, in the case of Comparative Example 4, there was no UV absorber, making it difficult to implement fine patterns.

Experimental Example 3: Measurement of luminescence intensity

A 365 nm tube type 4 W UV irradiator (VL-4LC) was applied to the part formed in a 20 x 20 mm square pattern among the color filters manufactured using the metal oxide photosensitive resins prepared in Examples 1 to 9 and Comparative Examples 1 to 4 , VILBER LOURMAT), the light-converted area was measured, and in Examples 1 to 9 and Comparative Examples 1 to 4, the luminescence intensity in the 450 nm area was measured using a Spectrum meter (Ocean Optics).

The higher the measured luminous intensity, the higher the luminous efficiency.

In Examples 1 to 9, it was confirmed that the luminous intensity was higher than 2 and thus the luminous efficiency was excellent. On the other hand, in the case of Comparative Example 2, it was not easy to cure because it contained only acrylic resin, and a tearing phenomenon occurred. In addition, in the case of Comparative Example 4, there was no UV absorber, so it was confirmed that the light efficiency was reduced.

Experimental Example 4: Viewing angle measurement

The light intensity according to the viewing angle under light transmission conditions was measured on the part formed in a 20 x 20 mm square pattern among the color filters manufactured using the metal oxide photosensitive resin prepared in Examples 1 to 9 and Comparative Examples 1 to 4 using a variable angle photometer. It was measured using (GC-5000L, Nippon Denshoku), and the diffusion rate was calculated using Equation 1 below.

[Equation 1]

Diffusion rate = (B ₇₀ + B ₂₀ ) / 2 x B ₅ x 100

(B _θ =I _θ /cosθ)

I means light intensity measured at each angle, B _70, B _20, B ₅ means measured at 70 degrees, 20 degrees, and 5 degrees.

The higher the measured diffusion rate, the better the viewing angle. Accordingly, looking at Table 7, it was confirmed that the viewing angle was improved in Examples 1 to 9. Additionally, in Comparative Example 4, it was confirmed that in the absence of a UV absorber, the diffusion rate was reduced.

Claims (14)

A blue photosensitive resin composition comprising scattering particles, a blue colorant, a cardo-based binder resin, a photopolymerizable compound, a photopolymerization initiator, a UV absorber, and a solvent,
The UV absorber is octyl 3-[3-tert-butyl-4-hydroxy-5-(5-chloro-2H-benzotriazol-2-yl)phenyl]propionate, 2-ethylhexyl 3-(3 -tert-butyl-4-hydroxy-5-(5-chloro-2H-benzotriazol-2-yl)phenyl)propionate, [3-[3-(2H-benzotriazol-2-yl) -5-(1,1-methylethyl)-4-hydroxyphenyl]-1-oxopropyl]-w-[3-[3-(2H-benzotriazol-2-yl)-5-(1, 1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropoxy]poly(oxy-1,2-ethanediyl), (3-(3-(2H-benzotriazol-2-yl)- 5-(1,1-dimethylethyl)-4-hydroxyphenyl)-1-oxopropyl)-hydroxypoly(oxo-1,2-ethanediyl), 2-(2H-benzotriazole-2- 1)-4,6-ditertpentylphenol, 3-(2H-benzotriazolyl)-5-(1,1-dimethylethyl)-4-hydroxy-benzinepropionic acid octyl ester, 2-(2H-benzotria) Zol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol, 2-(2H-benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl) -4-(1,1,3,3-tetramethylbutyl)phenol, 2-(4,6-dimethyl-1,3,5-triazin-2-yl)-5-((hexyl)oxy)- Phenol, 2-(4-(2-hydroxy-3-tridecyloxypropyl)oxy)-2-hydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5- Triazine, 2-(4-(2-hydroxy-3-didecyloxypropyl)oxy)-2-hydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5 -Triazine, 2-(2-hydroxy-4-(3-(2-ethylhexyl-1-oxy)-2-hydroxypropyloxy)phenyl)-4,6-bis(2,4-dimethylphenyl )-1,3,5-triazine, 2,2'-[6-(2,4-dibutoxyphenyl)-1,3,5-triazine-2,4-diyl]bis(5- butoxyphenol) and 6-methylheptyl 2-{4-[4,6-di(4-biphenylyl)-1,3,5-triazin-2-yl]-3-hydroxyphenoxy}prop Contains one or more of the panoates,
The UV absorber contains 0.025 to 7% by weight based on the total weight of solids in the composition,
The cardo-based binder resin includes one or more of the compounds represented by the following formulas 1-1 and 1-2,
The scattering particles include metal oxides with an average particle diameter of 30 to 300 nm,
A blue photosensitive resin composition, wherein the diffusion rate calculated using the following formula 1 for the color filter manufactured using the blue photosensitive resin composition is 70.4 to 85.9:
[Equation 1]
Diffusion rate = (B ₇₀ + B ₂₀ ) / 2 x B ₅ x 100
(B _θ =I _θ /cosθ)
In equation 1 above,
I means the light intensity measured with a variable angle photometer (GC-5000L, Nippon Denshoku) at each angle,
B _70, B ₂₀ and B ₅ means measurements at 70 degrees, 20 degrees and 5 degrees, respectively.
[Formula 1-1]

[Formula 1-2]

(In Formula 1-1 or Formula 1-2,
R ₁ , R ₂ , R ₃ and R ₄ are each independently, and;
X is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a hydroxyl group;
R ₅ is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms.) The method of claim 1, wherein the scattering particles are Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , ZnO, Nb ₂ O ₃ , SnO and MgO. A blue photosensitive resin composition comprising at least one member selected from the group. The blue photosensitive resin composition of claim 1, wherein the blue photosensitive resin composition further includes a purple colorant. The blue photosensitive resin composition of claim 1, wherein the blue colorant includes at least one of a blue pigment and a blue dye. The method of claim 1, wherein the cardo-based binder resin is 9,9-bis(3-cinnamic diester)fluorene (9,9-bis(3-cinnamic diester)fluorene), 9,9-bis(3-cinnamic diester)fluorene Moyl, 4-hydroxyphenyl) fluorene (9,9-bis (3-cinnamoil, 4-hydroxyphenyl) fluorene), 9,9-bis (glycidyl methacrylate ether) fluorene (9,9-bis (glycidyl methacrylate ether)fluorene), 9,9-bis(3,4-dihydroxyphenyl)fluorene dicinnamic ester, 3,6- Diglycidyl methacrylate ether spiro (fluorene-9,9-xantene) (3,6-diglycidyl methacrylate ether spiro(fluorene-9,9-xantene)), 9,9-bis (3-allyl, 4 -Hydroxyphenylfluorene)(9,9-bis(3-allyl, 4-hydroxyphenylfluorene), 9,9-bis(4-allyloxyphenyl)fluorene) and 9,9-bis(3,4-methacrylic diester)fluorene, a blue color containing at least one selected from the group consisting of Photosensitive resin composition. The blue photosensitive resin composition according to claim 1, wherein the blue photosensitive resin composition further includes an acrylic alkali-soluble resin as a binder resin. The method according to claim 1, wherein the photopolymerization initiator is a blue photosensitive resin composition comprising at least one selected from the compounds represented by 3 to 5 in the following chemistry.
[Formula 3]

(In Formula 3 above,
R ₈ is a hydrogen atom, a halogen atom, a hydroxyl group, a phenyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, a benzyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, or a substituted or unsubstituted alkyl group with 1 to 12 carbon atoms. It may be a cyclic naphthyl group, or -SR ^a , and R ^a may be hydrogen, an alkyl group having 1 to 12 carbon atoms, or a benzyl group;
R ₉ to R ₁₂ are each independently a hydrogen atom, a halogen atom, a hydroxyl group, a phenyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, a benzyl group substituted or unsubstituted with an alkyl group having 1 to 12 carbon atoms, or a C 1 to 12 alkyl group. It is a naphthyl group substituted or unsubstituted with an alkyl group of 12;
R ₁₁ and R ₁₂ may form a ring together.)
[Formula 4]

(In Formula 4, R ₁₃ is a diphenyl sulfide group, a substituted diphenyl sulfide group, a carbazole group, a substituted carbazole group, a fluorene group, or a substituted fluorene group;
R ₁₄ is hydrogen, an alkyl group with 1 to 20 carbon atoms, a cycloalkyl group with 3 to 8 carbon atoms, an unsubstituted or substituted phenyl group, or , n is an integer from 1 to 4, and m is an integer from 1 to 6;
R ₁₅ is an alkyl group having 1 to 8 carbons, a phenyl group, a substituted phenyl group, a benzyl group, or a substituted benzyl group.)
[Formula 5]

(In Formula 5,
R ₁₆ , R ₁₇ and R ₁₈ each independently represent R, OR, COR, SR, CONRR', ROR' or CN; R and R' are an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 30 carbon atoms, It represents an aralkyl group with 7 to 30 carbon atoms or a heterocyclic group with 2 to 20 carbon atoms, and these may be substituted with a halogen atom or a heterocyclic group with 2 to 20 carbon atoms, and among these, the alkylene portion of the alkyl group and aralkyl group is an unsaturated bond, ether. may be interrupted by a bond, a thioether bond, or an ester bond, and R and R' may be taken together to form a ring;
Y ₁ represents an oxygen atom, a sulfur atom, or a selenium atom,
r represents an integer from 0 to 5;
s represents 0 or 1;
R ₁₉ , R ₂₀ , R ₂₁ and R ₂₂ each independently represent a hydrogen atom, a halogen atom or an alkyl group having 1 to 8 carbon atoms;
X _{1 and} may be substituted, and among these, the alkylene portion of the alkyl group and aralkyl group may be interrupted by an unsaturated bond, an ether bond, a thioether bond, or an ester bond;
X ₂ can form a ring with the carbon atom of an adjacent ring;
Y ₂ and Y ₃ each independently represent an oxygen atom, a sulfur atom, or a selenium atom.) In claim 1,
The photopolymerization initiator is a blue photosensitive resin composition comprising at least one selected from the group consisting of the following formula.
[Formula 5-1]

[Formula 5-2]

[Formula 5-3]

[Formula 5-4]

[Formula 5-5]

[Formula 5-6]

[Formula 5-7]

[Formula 5-8]
The method according to claim 1, wherein the scattering particles are 0.1 to 50% by weight based on the total weight of solids in the blue photosensitive resin; 0.1 to 50% by weight of the blue colorant; 5 to 85% by weight of the binder resin; 5 to 50% by weight of a photopolymerizable compound; and 0.1 to 20% by weight of the photopolymerization initiator, and 60 to 90% by weight of a solvent based on the total weight of the blue photosensitive resin composition. A color filter comprising a blue pattern layer made of the blue photosensitive resin composition of any one of claims 1 to 9. In claim 10,
The color filter further includes one or more selected from the group consisting of a red pattern layer and a green pattern layer. In claim 11,
A color filter wherein the red pattern layer or the green pattern layer includes quantum dots. In claim 12,
A color filter, characterized in that the color filter is a self-luminous color filter. Color filter according to claim 10; and
An image display device comprising a light source that emits blue light.