KR102259147B1 - A photo sensitive resin composition, a color filter comprising a black metrics, a column spacer or black column spacer prepared by using the composition, and a display devide comprising the color filter - Google Patents

Abstract

The present invention is a colored photosensitive resin composition comprising a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent,
The colorant includes an organic black pigment, a blue pigment and carbon black,
25 to 55% of a colorant based on the total weight of the solid content in the colored photosensitive resin composition,
A colored photosensitive resin composition comprising 3 to 25% of the organic black pigment, 5 to 25% of the blue pigment, and 5 to 13% of the carbon black, based on the total weight of the solid content in the colored photosensitive resin composition, The present invention relates to a color filter including a black matrix, a column spacer or a black column spacer manufactured by using the same, and a display device including the color filter.

Description

A colored photosensitive resin composition, a black matrix prepared using the same, a color filter including a column spacer or a black column spacer, and a display device including the color filter TECHNICAL FIELD COLUMN SPACER OR BLACK COLUMN SPACER PREPARED BY USING THE COMPOSITION, AND A DISPLAY DEVIDE COMPRISING THE COLOR FILTER}

The present invention relates to a colored photosensitive resin composition comprising an organic black pigment, a colorant comprising a blue pigment and carbon black, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent, a color filter prepared using the composition, and the color filter It relates to a display device comprising a.

A color filter is widely used in various display devices such as an imaging device and a liquid crystal display (LCD), and its application range is rapidly expanding. The color filter used in the image pickup device, liquid crystal display device, etc. is made of a coloring pattern of three colors of red, green, and blue, or yellow, magenta and cyan ( It consists of a coloring pattern of 3 colors of Cyan).

The coloring pattern of each of the color filters is generally formed using a coloring photosensitive resin composition including a colorant such as a pigment or dye, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator, and a solvent. The coloring pattern processing using the colored photosensitive resin composition is generally performed by a lithography process.

Colored photosensitive resins are essential materials for color filters, liquid crystal display materials, organic light emitting devices, displays, and the like. For example, in a color filter of a color liquid crystal display, a light blocking layer using a black photosensitive composition is formed at the boundary between the colored layers in order to enhance the contrast and color effect of red, green, and blue. In addition, recently, it is required to be positioned on an array substrate to not only serve as a black matrix, but also to form a spacer for maintaining a cell gap so that various roles can be performed at once. Accordingly, not only an optical effect for basic light blocking, but also characteristics of good elasticity and reliability are required.

In accordance with this requirement, Patent Publication No. 10-2010-0095633 discloses a photosensitive resin composition having improved light-shielding effect by mixing and using a colorant. However, there is a problem in that it is difficult to secure excellent properties of elastic modulus and reliability in the prior art. Therefore, it is necessary to develop a photosensitive resin composition that is excellent in reliability and elastic recovery while securing an excellent light-shielding effect.

Republic of Korea Patent Publication No. 10-2010-0095633

The present invention has been devised to solve the problems of the prior art, and a colored photosensitive resin having excellent light-shielding effect, that is, optical properties, capable of low-temperature curing, and excellent reliability and elastic recovery even when a high concentration of colorant is included. It aims to provide a composition.

Another object of the present invention is to provide a color filter including a black matrix, a column spacer, or a black column spacer made of a colored photosensitive resin composition, and a display device including the color filter.

The present invention

A colored photosensitive resin composition comprising a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator, and a solvent,

The colorant includes an organic black pigment, a blue pigment and carbon black,

25 to 55% of a colorant based on the total weight of the solids in the colored photosensitive resin composition,

Provides a colored photosensitive resin composition comprising 3 to 25% of the organic black pigment, 5 to 25% of the blue pigment, and 5 to 13% of the carbon black based on the total weight of the solid content in the colored photosensitive resin composition do.

The present invention provides a color filter comprising a black matrix, a column spacer, or a black column spacer prepared from the above-described colored photosensitive resin composition.

The present invention provides a display device including the above-described color filter.

The present invention provides a colored photosensitive resin composition that has excellent optical properties, can be cured at a low temperature, and has excellent reliability and elastic recovery rate even when a high concentration of a colorant is included.

Hereinafter, the present invention will be described in more detail.

The present invention is a colored photosensitive resin composition comprising a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent,

The colorant includes an organic black pigment, a blue pigment and carbon black,

25 to 55% of a colorant based on the total weight of the solids in the colored photosensitive resin composition,

By including 3 to 25% of the organic black pigment, 5 to 25% of the blue pigment, and 5 to 13% of the carbon black based on the total solids weight of the colored photosensitive resin composition, the optical properties are excellent, and low-temperature curing is possible. It is possible and provides a colored photosensitive resin composition having excellent reliability and elastic recovery rate even when a high concentration of a colorant is included.

Hereinafter, each component which comprises the coloring photosensitive resin composition of this invention is demonstrated.

coloring agent

In the present invention, a colorant having a light-shielding property to visible light is used, and the colorant of the present invention includes an organic black pigment, a blue pigment, and carbon black.

The organic black pigment includes at least one selected from the group consisting of lactam black, aniline black and perylene black, and preferably includes lactam black. More specifically, the organic black pigment may be 100CF (Basf Corporation) or the like. By including the organic black pigment, optical density can be improved, and it is advantageous in terms of dielectric constant and transmittance.

In addition, the blue pigment is a compound that does not contain a central metal, and by using a blue pigment that does not contain the central metal, it does not cause a problem when in contact with the liquid crystal used in the process, thereby securing an advantage in driving equipment. have. In the present invention, if the blue pigment is a compound that does not contain a central metal, the type is not particularly limited, but C.I. It is preferable to use at least one selected from pigment blue 16, 60, 61 and/or 66, and the like, and C.I. It is more preferable to use Pigment Blue 60.

When the carbon black is included, an effect of improving optical density can be obtained.

The present invention may further include any one or more of a violet pigment and a red pigment.

The violet pigment serves to improve optical density (O.D) by reducing transmittance in a region of 400 to 600 nm. In addition, the content of the organic black pigment may be reduced through the use of the violet pigment, and thus the reliability of the colored photosensitive resin composition may be improved. The violet pigment is not particularly limited in its kind, but C.I. It is preferable to use at least one selected from the group consisting of pigment violet 14, 19, 23, 29, 32, 33, 36 and/or 37, and the like, and C.I. It is more preferable to use Pigment Violet 29.

The red pigment serves to improve optical density. The red pigment is not particularly limited in its kind, but C.I. Pigment Red 9, 97, 105, 122, 123, 144, 149, 166, 168, 176, 177, 180, 192, 208, 215, 216, 224, 242, 254, 255 and 264;

In the present invention, the colorant is included in an amount of 25 to 55% by weight, preferably 28 to 50% by weight, based on the total weight of the solid content in the colored photosensitive resin composition. When the colorant is included within the above range, the optical density may be improved.

3 to 25% of the organic black pigment, 5 to 25% of the blue pigment, and 5 to 13% of the carbon black may be included, based on the total weight of the solid content in the colored photosensitive resin composition, and the organic black pigment 8 to 20 %, 8 to 22% of the blue pigment, and 6 to 11% of the carbon black is more preferable.

When the organic black pigment is included within the above range, a problem does not occur in optical characteristics in the range of 400 to 600 nm, and it is preferable in that reliability is improved. In addition, when the blue pigment is included within the above range, a colored photosensitive resin composition having excellent optical density can be obtained, and it is preferable in that there is no problem in the optical properties in the range of 700 to 750 nm and in the range of 400 to 600 nm.

When the carbon black is included within the above range, the optical density is excellent, and it is preferable in that there is no problem in the optical properties in the range of 400 to 600 nm and the range of 950 nm.

The present invention may further include any one or more of a violet pigment and a red pigment as an additional colorant, and when the violet pigment is further included, it is possible to obtain a colored photosensitive resin composition having superior effects in optical density and reliability. In addition, when a red pigment is further included, optical properties may be improved.

The violet pigment is preferably included in an amount of 3 to 15% by weight based on the total weight of the solids included in the composition. When the violet pigment is included in the above weight ratio, a colored photosensitive resin composition having excellent optical density and reliability may be obtained.

The red pigment is preferably included in an amount of 3 to 15% by weight based on the total weight of the solids included in the composition. When the red pigment is included in the above weight ratio, it is possible to obtain a colored photosensitive resin composition having excellent optical density and reliability.

More specifically, in the present invention, the weight ratio of organic black pigment: blue pigment: carbon black in the colored photosensitive resin composition may be 1: 0.25 to 3.3: 0.15 to 1.7. When mixed within the above range, optical properties may be excellent when mixed, and it is preferable in that an excellent effect can be achieved in Near-IR.

In addition, when an additional colorant is included, the weight ratio of organic black pigment: at least one of red pigment and violet pigment: blue pigment: carbon black in the colored photosensitive resin composition is 1: 0.1 to 1.7: 0.25 to 3.3: 0.15 to 1.7. It can be mixed, and when mixed within the above range, it is preferable in that optical properties and optical density can be improved.

In this invention, solid content in the coloring photosensitive resin composition means the sum total of the component from which the solvent was removed.

In addition, as the colorant, it is preferable to use a pigment dispersion in which the particle diameter of the pigment is uniformly dispersed. Examples of a method for uniformly dispersing the particle size of the pigment include a method of dispersing the pigment dispersant (a1) and containing the pigment dispersant (a1). According to the method, a pigment dispersion in a state in which the pigment is uniformly dispersed in a solution can be obtained. have.

(a1) Pigment dispersant

The pigment dispersant is added to deagglomerate and maintain stability of the pigment, and specific examples of the pigment dispersant include cationic, anionic, nonionic, amphoteric, polyester, polyamine surfactants, etc. , These can be used individually or in combination of 2 or more types, respectively.

Specific examples of the cationic surfactant include amine salts such as stearylamine hydrochloride and lauryl trimethylammonium chloride, or quaternary ammonium salts.

Specific examples of the anionic surfactant include higher alcohol sulfate salts such as sodium lauryl alcohol sulfate and sodium oleyl alcohol sulfate, alkyl sulfates such as sodium lauryl sulfate and ammonium lauryl sulfate, sodium dodecylbenzenesulfonate and Alkyl aryl sulfonates, such as sodium dodecyl naphthalene sulfonate, etc. are mentioned.

Specific examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene aryl ether, polyoxyethylene alkyl aryl ether, other polyoxyethylene derivatives, oxyethylene/oxypropylene block copolymer, sorbitan fatty acid ester, Polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, glycerol fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene alkylamine, etc. are mentioned.

In addition, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyethylene glycol diesters, sorbitan fatty acid esters, fatty acid-modified polyesters, tertiary amine-modified polyurethanes, and polyethyleneimines are included. have.

In addition, the pigment dispersant preferably includes an acrylate-based dispersant (hereinafter, acrylate-based dispersant) including butyl methacrylate (BMA) or N,N-dimethylaminoethyl methacrylate (DMAEMA). It is preferable to use the acrylate-based dispersant prepared by the living control method, and commercially available products include DISPER BYK-2000, DISPER BYK-2001, DISPER BYK-2070 or DISPER BYK-2150, and the acrylic The rate-based dispersant may be used alone or in combination of two or more.

As the pigment dispersant, other resin type pigment dispersants may be used in addition to the acrylate-based dispersant. As the pigment dispersant of the other resin type, a pigment dispersant of known resin type, particularly polyurethane, polycarboxylic acid esters typified by polyacrylates, unsaturated polyamides, polycarboxylic acids, polycarboxylic acids (partially) amine salts, ammonium salts of polycarboxylic acids, alkylamine salts of polycarboxylic acids, polysiloxanes, long-chain polyaminoamide phosphate salts, esters of hydroxyl-containing polycarboxylic acids and modified products thereof, or free ) oily dispersants such as amides or salts thereof formed by the reaction of a polyester having a carboxyl group with a poly(lower alkyleneimine); water-soluble resins or water-soluble polymer compounds such as (meth)acrylic acid-styrene copolymer, (meth)acrylic acid-(meth)acrylate ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol or polyvinyl pyrrolidone; Polyester; modified polyacrylates; adducts of ethylene oxide/propylene oxide; and phosphate esters.

As a commercially available product of the above-mentioned other resin type pigment dispersant, as a cationic resin dispersant, for example, BYK (Big) Chemi Corporation's trade names: DISPER BYK-160, DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK-164, DISPER BYK-166, DISPER BYK-171, DISPER BYK-182, DISPER BYK-184; BASF trade names: EFKA-44, EFKA-46, EFKA-47, EFKA-48, EFKA-4010, EFKA-4050, EFKA-4055, EFKA-4020, EFKA-4015, EFKA-4060, EFKA-4300, EFKA- 4330, EFKA-4400, EFKA-4406, EFKA-4510, EFKA-4800; Trade names from Lubirzol: SOLSPERS-24000, SOLSPERS-32550, NBZ-4204/10; Kawaken Fine Chemicals' trade names: HINOACT T-6000, HINOACT T-7000, HINOACT T-8000; Trade names of Ajinomoto Corporation: AJISPUR PB-821, AJISPUR PB-822, AJISPUR PB-823; Trade names of Kyoeisha Chemical Corporation: FLORENE DOPA-17HF, fluorene DOPA-15BHF, fluorene DOPA-33, fluorene DOPA-44, etc. are mentioned.

In addition to the acrylate-based dispersant, other resin-type pigment dispersants may be used alone or in combination of two or more, or may be used in combination with an acrylate-based dispersant.

The pigment dispersant is included in an amount of more than 0 and 1 part by weight or less, preferably 0.05 to 0.5 parts by weight, based on 1 part by weight of the colorant. When the pigment dispersant is included in an amount greater than 0 and 1 part by weight or less, it is preferable because a uniformly dispersed pigment can be obtained.

(B) Alkali-soluble resin

The alkali-soluble resin generally makes the unexposed portion of the colored photosensitive resin layer formed by using the colored photosensitive resin composition alkali-soluble, and also functions as a binder resin for a colorant and a dispersion medium.

The alkali-soluble resin may be used without particular limitation as long as it is a polymer soluble in the alkaline developer used in the developing step for manufacturing the color filter, but in the present invention, it is preferable to use an alkali-soluble resin containing an epoxy group.

As for the said alkali-soluble resin, the copolymer etc. of the monomer containing an epoxy group, and the other monomer copolymerizable with the said monomer are mentioned, for example.

The monomer containing the epoxy group is specifically, for example, 3,4-epoxytricyclo[5.2.1.0,2,6]decan-9-ylacrylate, 3,4-epoxytricyclo[5.2.1.0,2 and ,6]decan-8-yl acrylate, glycidyl methacrylate, and 4-hydroxybutyl acrylate glycidyl ether.

Specifically, as another monomer copolymerizable with the monomer containing the epoxy group, for example, unsaturated carboxylic acid aminoalkyl esters, unsaturated carboxylic acid glycidyl esters, carboxylic acid vinyl esters, unsaturated ethers, cyanide and vinyl compounds, unsaturated amides, unsaturated imides, aliphatic conjugated dienes, and macromonomers having a monoacryloyl group or monomethacryloyl group at the end of the polymer molecular chain of polysiloxane, and these monomers are each alone or Two or more types may be mixed and used.

The alkali-soluble resin has a weight average molecular weight of 3,000 to 20,000, preferably 5,000 to 15,000.

In addition, the acid value of the alkali-soluble resin is 50 to 200 mgKOH/g based on the solid content, and it has excellent developability against alkali development within the above range, suppresses the generation of residues, and improves the adhesion of the pattern.

The alkali-soluble resin is included in an amount of 5 to 60% by weight, preferably 20 to 50% by weight, based on the total weight of the solid content in the colored photosensitive resin composition. If the content of the alkali-soluble resin is within the above range, it is preferable because the pattern formation is easy and the resolution and the remaining film rate are improved.

(C) photopolymerizable compound

The (C) photopolymerizable compound is a compound that can be polymerized by the action of a photoinitiator, and may include 3 to 10 functional monomers, preferably 4 to 8 functional monomers.

Specific examples of the monofunctional monomer include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate and N-vinylpi. and rollidone, but is not limited thereto.

Specific examples of the 3-10 functional monomer include trimethylol propane tri (meth) acrylate, ethoxylated trimethylol propane tri (meth) acrylate, propoxylated trimethylol propane tri (meth) acrylate, Pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxylated dipentaerythritol and hexa(meth)acrylate and dipentaerythritol hexa(meth)acrylate, but is not limited thereto.

Specific examples of the trifunctional monomer 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, and the like.

Specific examples of the tetrafunctional monomer include pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, ditrimethylol propane tetraacrylate, ditrimethylol propane tetramethacrylate, dipentaerythritol tetraacrylate, Tetramethylolmethane tetraacrylate, ethoxylated pentaerythritol tetraacrylate, glycerol tetraacrylate, glycerol tetramethacrylate, etc. are mentioned.

Specific examples of the 5-functional monomer include dipentaerythritol pentaacrylate, dipentaerythritol pentamethacrylate, dipentaerythritol monohydroxypentaacrylate, and dipentaerythritol monohydroxypentamethacrylate. can

Specific examples of the 6-functional monomer include dipentaerythritol hexaacrylate and dipentaerythritol hexamethacrylate.

These can be used individually or in mixture of 2 or more types.

In the present invention, the “(meth)acrylate” means “acrylate” or “methacrylate”.

The photopolymerizable compound is included in an amount of 5 to 50 wt%, preferably 7 to 45 wt%, based on the total weight of the solid content in the colored photosensitive resin composition of the present invention. The photopolymerizable compound may improve the strength or flatness of the pixel portion in the range of 5 to 50% by weight.

In addition, the alkali-soluble resin and the photopolymerizable compound of the present invention are mixed in a weight ratio of 1:1 to 5:1, preferably in a weight ratio of 1.2:1 to 3.7:1. When the alkali-soluble resin and the photopolymerizable compound are mixed in a weight ratio of 1:1 to 5:1, processability is improved, and a colored photosensitive resin composition that is easy to form a pattern can be provided.

(D) Photoinitiator

The photopolymerization initiator can be used without limitation as long as it can polymerize the photopolymerizable compound, but preferably, considering polymerization characteristics, initiation efficiency, absorption wavelength, availability, price, etc., acetophenone-based compounds, benzoin-based compounds, benzophenones It may be at least one compound selected from the group consisting of a non-based compound, a triazine-based compound, a biimidazole-based compound, an oxime-based compound, and a thioxanthone-based compound.

Specifically, as the acetophenone-based compound, 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-1-[4-(1-methylvinyl)phenyl ]propan-1-one and 2-(4-methylbenzyl)-2-(dimethylamino)-1-(4-morpholinophenyl)butan-1-one; and the like.

Specific examples of the benzoin-based compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoisobutyl ether.

Specifically, as the benzophenone-based compound, for example, benzophenone, 0-benzoyl methyl benzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3',4,4' -tetra(tert-butylperoxycarbonyl)benzophenone, 2,4,6-trimethylbenzophenone, etc. are mentioned.

Specifically, as the triazine-based compound, for example, 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis(trichloro) Rhomethyl)-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( Trichloromethyl)-6-[2-(furan-2-yl)ethenyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(4-di Ethylamino-2-methylphenyl)ethenyl]-1,3,5-triazine, and 2,4-bis(trichloromethyl)-6-[2-(3,4 dimethoxyphenyl)ethenyl]-1 , 3,5-triazine and the like.

Specifically, as the biimidazole compound, for example, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2) ,3-dichlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetra(alkoxyphenyl) ) biimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (trialkoxyphenyl) biimidazole, 2,2-bis (2,6-dichlorophenyl) )-4,4',5,5'-tetraphenyl-1,2'-biimidazole, or an imidazole compound in which the phenyl group at the 4,4',5,5' position is substituted with a carboalkoxy group, etc. can be heard

More preferably, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2,3-dichlorophenyl)-4 ,4',5,5'-tetraphenylbiimidazole, 2,2-bis(2,6-dichlorophenyl)-4,4',5,5'-tetraphenyl-1,2'-biimidazole and the like.

Specific examples of the oxime compound include, for example, o-ethoxycarbonyl-α-oxyimino-1-phenylpropan-1-one, and commercially available products may be OXE01 and OXE02 manufactured by BASF.

The thioxanthone-based compound is specifically, for example, 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythiok Santon etc. are mentioned.

The photopolymerization initiator may be used alone or in combination of two or more.

In the present invention, the photopolymerization initiator is included in an amount of 0.1 to 40% by weight, preferably 1 to 30% by weight, based on the total solid weight of the colored photosensitive resin composition.

Within the range of 0.1 to 40 wt%, the color photosensitive resin composition is highly sensitive, so that the strength of the pixel unit formed using the color photosensitive resin composition and smoothness on the surface of the pixel unit may be improved.

In addition, in the present invention, a photopolymerization initiator auxiliary may be used in addition to the photopolymerization initiator.

The photopolymerization initiation adjuvant is a compound used to promote polymerization of a photopolymerizable compound whose polymerization is initiated by a photoinitiator, and examples of the photopolymerization initiation adjuvant include an amine-based compound or an alkoxyanthracene-based compound.

Specific examples of the amine compound include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, benzoic acid 2 -Dimethylaminoethyl, 4-dimethylaminobenzoic acid 2-ethylhexyl, N,N-dimethylparatoluidine, 4,4'-bis(dimethylamino)benzphenone (common name, Michler's ketone), 4,4'-bis (diethylamino)benzophenone, 4,4'-bis(ethylmethylamino)benzophenone, etc. are mentioned, Among these, 4,4'-bis(diethylamino)benzophenone is preferable.

Specifically, as the alkoxyanthracene-based compound, for example, 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, and 2-ethyl-9,10- A diethoxy anthracene etc. are mentioned.

Moreover, a commercially available thing can be used as a photoinitiation adjuvant, As a commercially available photoinitiation adjuvant, the brand name "EAB-F" (manufacturer: Hodogaya Chemical Industry Co., Ltd.) etc. are mentioned.

In the case of using the photopolymerization initiator auxiliary, it is preferably used in an amount of more than 0 and 10 moles or less, 0.01 to 5 moles, based on 1 mole of the photopolymerization initiator. When the photopolymerization initiation aid is used in the range of more than 0 and 10 moles or less, the sensitivity of the colored photosensitive resin composition may be higher, and productivity of a color filter formed using the colored photosensitive resin composition may be improved.

(E) Solvent

As long as the solvent is effective in dissolving other components included in the colored photosensitive resin composition, the solvent used in the conventional colored photosensitive resin composition may be used without particular limitation, and in particular, ethers, acetates, aromatic hydrocarbons, ketones, Alcohols or esters are preferable.

Examples of the ethers 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 dialkyl ethers, such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, and diethylene glycol dibutyl ether, etc. are mentioned.

Examples of the acetates include methyl cellosolve acetate, ethyl cellosolve acetate, ethyl acetate, butyl acetate, amyl acetate, methyl lactate, ethyl lactate, butyl lactate, 3-methoxybutyl acetate, 3 -Methyl-3-methoxy-1-butyl acetate, methoxypentyl acetate, ethylene glycol monoacetate, ethylene glycol diacetate, methyl 3-methocypropionate, propylene glycol methyl ether acetate, 3-methoxy-1- Butyl acetate, 1,2-propylene glycol diacetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, dipropylene glycol methyl ether acetate, 1,3-butylene glycol diacetate, diethylene glycol monobutyl ether Acetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, diethylene glycol monoacetate, diethylene glycol diacetate, diethylene glycol monobutyl ether acetate, propylene glycol monoacetate, propylene glycol diacetate, propylene glycol monomethyl Ether acetate, propylene glycol monoethyl ether acetate, ethylene carbonate, propylene carbonate, etc. are mentioned.

Examples of the aromatic hydrocarbons include benzene, toluene, xylene, and mesitylene.

Examples of the ketones include methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and cyclohexanone.

Examples of the alcohol include ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, glycerin, and 4-hydroxy-4-methyl-2-pentanone.

Examples of the esters include ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, and γ-butyrolactone.

Each of the above solvents may be used alone or in combination of two or more.

The solvent is preferably an organic solvent having a boiling point of 100°C to 200°C in terms of applicability and dryness, for example, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, 3- Ethoxy ethyl propionate, 3-methoxymethyl propionate, etc. are mentioned.

The solvent is included in an amount of 60 to 90% by weight, preferably 65 to 85% by weight, based on the total weight of the colored photosensitive resin composition. When the solvent is included in the range of 60 to 90% by weight, good applicability when applied with a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater), and an inkjet coating device can be done

(F) Additives

The colored photosensitive resin composition of the present invention contains other additives according to the needs of those skilled in the art in a range that does not impair the object of the present invention in addition to the above components.

Specifically, the additive may further include at least one additive selected from the group consisting of, for example, other high molecular compounds, thermal initiators, curing agents, surfactants, adhesion promoters, antioxidants, ultraviolet absorbers, and anti-aggregation agents.

In addition, in the present invention, it may be more preferable to further include, in particular, a thermal initiator as an additive. The thermal initiator serves to maximize the initiation efficiency by causing a curing reaction by heat. The thermal initiator may be a peroxide-based compound, and the thermal initiator improves the physical properties of the coating film at a low temperature by initiating a curing reaction at 60 to 100°C.

The specific kind of the thermal initiator is not particularly limited, but TAG-2713 (K-PURE Corporation), tetramethylbutylperoxy neodecanoate (ex. Perocta ND, NOF Corporation), bis(4-butylcyclo Hexyl) peroxydicarbonate (ex. Peroyl TCP, NOF Corporation (manufactured)), di(2-ethylhexyl)peroxy carbonate, butylperoxy neodecanoate (ex. Perbutyl ND, NOF Corporation (manufactured)), D Propyl peroxy dicarbonate (ex. Peroyl NPP, NOF Co., Ltd.), diisopropyl peroxy dicarbonate (ex. Peroyl IPP, NOF Co., Ltd.), diethoxyethyl peroxy dicarbonate (ex. Peroyl EEP) , NOF (manufactured by), diethoxyhexyl peroxy dicarbonate (ex. Peroyl OEP, NOF (manufactured)), hexyl peroxy dicarbonate (ex. Perhexyl ND, NOF (manufactured)), dimethoxybutyl per Oxydicarbonate (ex. Peroyl MBP, NOF Co., Ltd.), bis(3-methoxy-3-methoxybutyl) peroxydicarbonate (ex. Peroyl SOP, NOF Co., Ltd.), dibutyl peroxy Dicarbonate, dicetyl peroxy dicarbonate, dimyristyl peroxy dicarbonate, 1,1,3,3-tetramethylbutyl peroxypivalate, hexyl peroxy pivalate (ex) Perhexyl PV, NOF (produced), butyl peroxypivalate (ex. Perbutyl, NOF (produced)), trimethyl hexanoyl peroxide (ex. Peroyl 355, NOF (produced)), dimethyl hydroxybutyl Peroxyneodecanoate (ex. Luperox 610M75, Atofina (produced)), amyl peroxyneodecanoate (ex. Luperox 546M75, Atofina (produced)), butyl peroxyneodecanoate (ex. Luperox 10M75, Atofina (agent), t-butylperoxy neoheptanoate, amylperoxy pivalate (ex. Luperox 546M75, Alofina (agent)), t-butylperoxy pivalate, t-amyl peroxy -2-ethylhexanoate, lauryl peroxide, dilauroyl peroxide, didecanoyl peroxide, benzoyl peroxide, dibenzoyl peroxide, 2,2-bis(tert-butylperoxy) Butane, 1,1-bis(tert-butylperoxy)cyclohexane, 2,5-bis(butylperoxy)-2,5-dimethylhexane, 2,5-bis(tert-butylperoxy)-1- Methylethyl)benzene, 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane, tert-butyl hydroperoxide, tert-butyl peroxide, tert-butyl peroxybenzoate, tert -Butylperoxy isopropyl carbonate, cumene hydroxyperoxide, dicumyl peroxide, lauroyl peroxide, 2,4-pentanedione peroxide, tert-butyl peracetate, peracetate It may be one or more selected from the group consisting of tic acid (peracetic acid), and potassium persulfate (potassium persulfate).

With respect to the content of the thermal initiator, it is preferably included in an amount of 1 to 10 wt%, more preferably 1 to 5 wt%, based on the total weight of the solid content in the colored photosensitive resin composition. When included in the above content, it is more preferable for fairness and undercut.

The thermal initiator and the photopolymerization initiator may be mixed in a weight ratio of 1:1.1 to 1:8, preferably 1:1.2 to 1:2.8 by weight. When the above range is satisfied, crosslinking degree formation and surface roughness are affected, thereby improving reliability.

Specific examples of the other polymer compound 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.

The curing agent is used for deep curing and increasing mechanical strength, and specific examples thereof include an epoxy compound, a polyfunctional isocyanate compound, a melamine compound, and an oxetane compound.

Specific examples of the epoxy compound in the curing agent include bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin, hydrogenated bisphenol F epoxy resin, novolak epoxy resin, other aromatic epoxy resins, alicyclic epoxy resins , glycidyl ester-based resins, glycidylamine-based resins, or brominated derivatives of these epoxy resins, aliphatic, alicyclic or aromatic epoxy compounds other than epoxy resins and brominated derivatives thereof, butadiene (co)polymer epoxides, isoprene ( A co)polymer epoxidized product, a glycidyl (meth)acrylate (co)polymer, triglycidyl isocyanurate, etc. are mentioned.

Specific examples of the oxetane compound in the curing agent include carbonate bisoxetane, xylenebisoxetane, adipate bisoxetane, terephthalate bisoxetane, and cyclohexanedicarboxylic acid bisoxetane.

The curing agent may be used in combination with a curing auxiliary compound capable of ring-opening polymerization of the epoxy group of the epoxy compound and the oxetane skeleton of the oxetane compound together with the curing agent. The curing auxiliary compound includes, for example, polyhydric carboxylic acids, polyhydric carboxylic acid anhydrides, and acid generators. As the polyhydric carboxylic acid anhydride, a commercially available epoxy resin curing agent may be used. Specific examples of the epoxy resin curing agent include a commercial product under a trade name (Adecahadona EH-700) (manufactured by Adeka Industrial Co., Ltd.), a trade name (Rikasiddo HH) (manufactured by Shin Nippon Ewha Co., Ltd.), trade name (MH-700) ( Manufactured by New Nippon Ewha Co., Ltd.) and the like. The curing agents exemplified above may be used alone or in combination of two or more.

The surfactant may be used to further improve the film-forming property of the photosensitive resin composition, and a silicone-based surfactant or a fluorine-based surfactant may be preferably used.

The silicone surfactants are commercially available products such as DC3PA, DC7PA, SH11PA, SH21PA and SH-8400 manufactured by Dow Corning Toray Silicone, TSF-4440, TSF-4300, TSF-4445, TSF-4446, TSF- 4460 and TSF-4452; and the like. The fluorine-based surfactant is, for example, as a commercially available product, Megapiece F-470, F-471, F-475, F-482, F-489 and F-554 (Dainippon Ink Chemical Co., Ltd.), BM-1000, BM -1100 (BM Chemie), Proride FC-135/FC-170C/FC-430 (Sumitomo 3M), and the like. Each of the surfactants exemplified above may be used alone or in combination of two or more.

The adhesion promoter is an additive used to enhance coatability and adhesion with a substrate, and a silane coupling agent comprising a reactive substituent selected from the group consisting of a carboxyl group, a methacryloyl group, an isocyanate group, an epoxy group, and combinations thereof. may include The silane coupling agent is specifically, for example, trimethoxysilyl benzoic acid, γ-methacryl oxypropyl trimethoxy silane, vinyltriacetoxysilane, vinyl trimethoxysilane, γ-isocyanate propyl triethoxysilane, r- glycidoxy propyl trimethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, and the like.

Specific examples of the antioxidant include 2,2'-thiobis(4-methyl-6-t-butylphenol) and 2,6-di-t-butyl-4-methylphenol.

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

Specific examples of the aggregation inhibitor include sodium polyacrylate.

The additive may be included in an amount of 0.01 to 10% by weight, preferably 0.05 to 2% by weight, based on the total weight of the solid content in the colored photosensitive resin composition.

For example, after adding the colorant to the solvent, the remaining composition and other additives may be added and obtained through stirring. In this case, the colorant may be added in the form of a mill base in which a pigment or the like is dissolved or dispersed in a solvent or alkali-soluble resin in advance. The additive may be added in advance to the solvent together with the colorant when in solution form.

The colored photosensitive resin composition thus prepared can be preferably used for manufacturing a black matrix of a display device, preferably a liquid crystal display device, a column spacer for maintaining a cell gap, or a black column spacer.

The present invention also provides that the above-described colored photosensitive resin composition exhibits a light transmittance of 0.1% or less with respect to a wavelength in the range of 400 to 600 nm when formed into a cured film having a thickness of 3.0 µm; It exhibits a light transmittance of 10% or less for wavelengths ranging from 700 nm to 750 nm; It provides a colored photosensitive resin composition, characterized in that it exhibits a light transmittance of 15% or more with respect to a wavelength in the 950 nm range.

In particular, the colored photosensitive resin composition of the present invention can be preferably used for manufacturing a black column spacer (black matrix-integrated spacer), wherein the black column spacer does not form a black matrix and a column spacer, respectively, but is black in one pattern. It means that the matrix and the column spacer are integrally formed.

The present invention also relates to a color filter comprising a black matrix, a column spacer, or a black column spacer prepared by using the colored photosensitive resin composition.

Also, it relates to a display device including the color filter.

A typical patterning process for forming a black matrix, a column spacer, or a black column spacer according to a photolithography method is

a) applying a colored photosensitive resin composition to a substrate;

b) a prebaking step of drying the solvent;

c) applying a photomask on the obtained film and irradiating actinic light to cure the exposed portion;

d) performing a developing process for dissolving the unexposed portion using an aqueous alkali solution; And

e) drying and post-baking.

The substrate is a glass substrate or a polymer plate is used. As a glass substrate, especially soda-lime glass, barium or strontium containing glass, lead glass, aluminosilicate glass, borosilicate glass, barium borosilicate glass, quartz, etc. can be used preferably. Examples of the polymer plate include polycarbonate, acrylic, polyethylene terephthalate, polyether sulfide or polysulfone.

In this case, the coating may be performed by a wet coating method using an application device such as a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater), or an inkjet so as to obtain a desired thickness.

Prebaking is performed by heating with an oven, a hot plate, etc. At this time, the heating temperature and heating time in a prebaking are suitably selected according to the solvent to be used, and are performed at the temperature of 80-150 degreeC for 1 to 30 minutes, for example.

Moreover, exposure performed after prebaking is performed by an exposure machine, and only the part corresponding to a pattern is exposed by exposing through a photomask. In this case, the irradiated light may be, for example, visible light, ultraviolet light, X-ray, electron beam, or the like.

Alkali development after exposure It is performed for the purpose of removing the coloring photosensitive resin composition of the part which is not removed of an unexposed part, and a desired pattern is formed by this image development. As a developing solution suitable for this alkali development, the aqueous solution of the carbonate of an alkali metal or alkaline-earth metal, etc. can be used, for example. In particular, using an aqueous alkali solution containing less than 1 to 3 wt% of carbonates such as sodium carbonate, potassium carbonate, lithium carbonate, etc., at a temperature of 10 to 50 ° C., preferably 20 to 40 ° C. Using a developer or ultrasonic cleaner, etc. to do it

The post-baking is performed to increase adhesion between the patterned film and the substrate, and is performed through heat treatment at 80 to 220° C. for 10 to 120 minutes. The post-baking is performed using an oven, a hot plate, or the like, like the pre-bake.

At this time, as a film thickness of a black matrix, 0.2 micrometer - 20 micrometers are preferable, 0.5 micrometer - 10 micrometers are more preferable, 0.8 micrometer - 5 micrometers are especially preferable.

Moreover, as a film thickness of a column spacer and a black column spacer, 0.1 micrometer - 8 micrometers are preferable, 0.1 micrometer - 6 micrometers are more preferable, 0.1 micrometer - 4 micrometers are especially preferable.

The black matrix, column spacer or black column spacer prepared from the colored photosensitive resin composition of the present invention has excellent physical properties such as optical density, adhesion, electrical insulation, and light-shielding property, as well as excellent heat resistance and solvent resistance, so that a liquid crystal display device can improve the reliability of

Hereinafter, the present invention will be described in more detail through examples. However, the following examples are provided to explain the present invention in more detail, and the scope of the present invention is not limited by the following examples. The following examples can be appropriately modified and changed by those skilled in the art within the scope of the present invention.

Preparation Example 1. Preparation of alkali-soluble resin

277 g of methoxybutyl acetate was put into a 1L separable flask equipped with a stirrer, thermometer, reflux cooling tube, dropping funnel and nitrogen inlet tube, and the temperature was raised to 80° C., and then 3,4-epoxytricyclo[5.2.1.0 301 g of a mixture of ,2,6]decan-9-ylacrylate and 3,4-epoxytricyclo[5.2.1.0,2,6]decan-8-ylacrylate in a molar ratio of 50:50, methacrylic A mixed solution in which 49 g of acid and 23 g of azobisdimethylvaleronitrile were dissolved in 350 g of methoxybutyl acetate was added dropwise over 5 hours. Then, reaction was advanced for 3 hours, and the alkali-soluble resin solution (solid content (NV) 35 weight%) was prepared. The alkali-soluble resin had an acid value (dry) of 69.8 KOH mg/g, a weight average molecular weight (Mw) of 12,300, and a degree of dispersion (Mw/Mn) of 2.1.

Examples 1 to 11 and Comparative Examples 1 to 7. Preparation of colored photosensitive resin composition

A mixture of a colorant, an alkali-soluble resin, a dispersant and a solvent was dispersed in a paint shaker at room temperature for 8 hours. Dispersion was carried out using 0.1 mm zirconia beads, and after the dispersion was completed, a colored dispersion was prepared by filtering.

A colored photosensitive resin composition was prepared by mixing the colored dispersion with an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent, and the contents thereof are shown in Table 1 below.

[Table 1]

(Unit: g)

(week)

OBP: organic black pigment (100CF; Basf Corporation)

V29: C.I. Pigment Violet 29

B60: C.I. Pigment Blue 60

B15:6: C.I. Pigment Blue 15:6

CB: Carbon Black

PI-R: Red pigment (R264, CLARIANT)

Alkali-soluble resin (B): alkali-soluble resin prepared in Preparation Example 1

Photopolymerizable compound (M) (using a (meth)acrylate group as a functional group)

M1: DPHA (DIPENTAERYTHRITOL HEXAACRYLATE, 6 sensuality, Nippon Kayaku)

M2: Viscoat#802 (8 functional, Osaka Organic Chemical)

Photoinitiator (PI): 1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]-ethanone-1-(O-acetyloxime) (Irgacure OXE-02: Ciba four)

D1: TAG-2713 (K-PURE)

D2: F554 (DIC Corporation; surface conditioning agent)

S: Propylene glycol monomethyl ether acetate (solvent)

Experimental Example 1. Measurement of physical properties of colored photosensitive resin composition

1-1. Substrate fabrication

A 5 cm X 5 cm glass substrate (Corning) was washed with a neutral detergent and water, and then dried. Each of the colored photosensitive resin compositions prepared in Examples and Comparative Examples was spin-coated on the glass substrate to have a final film thickness of 3.0 μm, pre-baked at 80 to 120 and dried for 1 to 2 minutes to remove the solvent . Then, the pattern was formed by exposure at an exposure amount of 25 to 35 mJ/cm ² , and the unexposed portion was removed using an aqueous alkali solution. Then, post-baking was performed at 200 to 250° C. for 10 to 30 minutes to prepare a colored substrate.

1-2. Measurement of optical properties

Based on the same manufacturing standards as in 1-1, the optical properties were evaluated using UV-vis (UV-2550, Shimadzu Corporation) for a substrate manufactured so that a black photosensitive resin was applied to the entire surface without a pattern. In the evaluation of the optical properties, 400 to 600 nm meant optical density, and 700 to 750 nm and 950 nm were measured values for each wavelength in the near-IR region. The results are shown in Table 2 below.

<Optical property evaluation criteria 1: within the 400-600 nm wavelength range>

◎: Excellent, 0.1T% or less

○: Good, more than 0.1T% ~ 0.3T% or less

△: insufficient, more than 0.3T% ~ 0.5T% or less

X: worse, more than 0.5T%

<Optical characteristics evaluation criteria 2: within the wavelength range of 700 to 750 nm >

◎: Excellent, 10T% or less

○: Good, more than 10T% ~ 12T% or less

△: insufficient, more than 12T% ~ 15T% or less

X: worse, more than 15T%

<Optical characteristic evaluation criteria 3: within the 950 nm wavelength range >

◎: Excellent, 15T% or more

○: good, more than 12T% ~ less than 15T%

△: insufficient, more than 10T% ~ 12T% or less

X: worse, 10T% or less

1-3. Reliability measurement

Based on the same manufacturing standards as in 1-1, a substrate prepared to be coated with a black photosensitive resin on the entire surface without a pattern was cut into 3x3 cm, immersed in an NMP solution, and then heated at 100° C. for 60 minutes. After that, only the NMP solution was extracted, and the absorbance was measured using a UV-vis spectrometer to measure the degree of dissolution in the NMP solvent, and the results are shown in Table 2 below.

< Reliability Evaluation Criteria>

◎: Excellent, 0.5 or less

○: good, more than 0.5 to less than 1.0

△: insufficient, more than 1.0 and less than 1.5

X: worse, greater than 1.5

1-4. Elastic recovery rate measurement

A substrate having a column spacer pattern is manufactured according to the same manufacturing standards as in 1-1. The thickness and height of the pattern in the reference state are measured through the manufactured substrate by SNU (SIS-2000, SNU Corporation). Then, using a hardness tester (Nano-indenter HM500, Fisher Co.), press it down to the point where the pattern is deformed by 1 μm. The hardness tester uses a flat indenter and presses it at a speed of 2mN/sec. It has a holding time for 5 seconds at the point of 1㎛ deformation. Then, the thickness and height of the pattern are measured using SNU (SIS-2000, SNU Corporation), and the elastic recovery factor is measured by the change in the thickness of the pattern before and after.

< Elastic recovery rate evaluation criteria>

◎: Excellent, 98% or more

○: Good, 97% or more to less than 98%

△: insufficient, 96% or more to less than 97%

X: worse, less than 96%

[Table 2]

Claims (18)

A colored photosensitive resin composition comprising a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator, a solvent, and a thermal initiator,
The colorant comprises a blue pigment and carbon black,
When the colored photosensitive resin composition is formed into a cured film, it exhibits a light transmittance of 0.1% or less with respect to a wavelength in the range of 400 to 600 nm,
The colored photosensitive resin composition, characterized in that it exhibits a light transmittance of 10% or less for a wavelength in the range of 700 to 750 nm.
The colored photosensitive resin composition according to claim 1, wherein the colored photosensitive resin composition exhibits a light transmittance of 15% or more with respect to a wavelength of 950 nm when the colored photosensitive resin composition is formed into a cured film.
The colored photosensitive resin composition according to claim 1, wherein the thermal initiator is a peroxide type.
The colored photosensitive resin composition according to claim 1, wherein the thermal initiator initiates the curing reaction at 60 to 100°C.
The colored photosensitive resin composition of claim 1, wherein the colored photosensitive resin composition further comprises an organic black pigment as the colorant.
The colored photosensitive resin composition according to claim 5, wherein the organic black pigment comprises at least one selected from the group consisting of lactam black, aniline black, and phenylene black.
The colored photosensitive resin composition of claim 5, wherein the colored photosensitive resin composition further comprises at least one of a red pigment and a violet pigment.
The colored photosensitive resin composition according to claim 1, wherein the blue pigment does not contain a central metal.
The colored photosensitive resin composition according to claim 1, wherein the blue pigment comprises at least one selected from the group consisting of CI pigment blue 16, 60, 61 and 66.
The colored photosensitive resin composition of claim 7, wherein the violet pigment comprises at least one selected from the group consisting of CI pigment violet 14, 19, 23, 29, 32, 33, 36 and 37.
The colored photosensitive resin composition according to claim 1, wherein the alkali-soluble resin comprises an epoxy resin.
The colored photosensitive resin composition according to claim 1, wherein the colored photosensitive resin composition further comprises at least one additive selected from the group consisting of a curing agent, a surfactant, an adhesion promoter, an antioxidant, an ultraviolet absorber, and an aggregation inhibitor. .
The method according to claim 1, 25 to 55% by weight of a colorant, 5 to 60% by weight of an alkali-soluble resin, 5 to 50% by weight of a photopolymerizable compound, and 0.1 to 40% by weight of a photoinitiator based on the total weight of the solid content in the colored photosensitive resin composition and 60 to 90 wt% of a solvent based on the total weight of the colored photosensitive resin composition.
The colored photosensitive resin composition according to claim 1, wherein the thermal initiator and the photopolymerization initiator are mixed in a weight ratio of 1:1.1 to 1:8.
The colored photosensitive resin composition according to claim 5, wherein a weight ratio of the organic black pigment: the blue pigment: the carbon black in the colorant is 1: 0.25 to 3.3: 0.15 to 1.7.
The coloring according to claim 7, wherein the weight ratio of organic black pigment: at least one of red pigment and violet pigment: blue pigment: carbon black in the colorant is 1: 0.1 to 1.7: 0.25 to 3.3: 0.15 to 1.7. A photosensitive resin composition.
A color filter comprising a black matrix, a column spacer or a black column spacer prepared from the colored photosensitive resin composition of any one of claims 1 to 16.
A display device comprising the color filter of claim 17 .