KR20160103278A - Color photosensitive resin composition, color filter manufactured thereby and liquid crystal display comprising the same - Google Patents

Abstract

The present invention relates to a red photosensitive resin composition, and to a liquid crystal display device comprising a color filter manufactured therefrom. More specifically, the present invention relates to a red photosensitive resin composition, which comprises a coloring agent consisting of C.I. pigment red 264, C.I. pigment red 254, and a yellow pigment, a photopolymerizable compound, a photopolymerization initiator, and a solvent, and to a liquid crystal display device comprising a color filter manufactured therefrom. The color filter comprising the composition has excellent coloring power in comparison with the conventional filter, can provide the range of high color reproduction, and reduces the decline in brightness in the range of high color reproduction. When applying the same to a liquid crystal display device, the vivid image with a high quality can be performed by securing excellent color properties.

Description

TECHNICAL FIELD [0001] The present invention relates to a colored photosensitive resin composition, a color filter manufactured therefrom, and a liquid crystal display device having the same. ≪ Desc / Clms Page number 1 >

The present invention relates to a red photosensitive resin composition capable of exhibiting high color reproduction, high brightness and excellent coloring power and capable of realizing a high quality image, a color filter manufactured therefrom, and a liquid crystal display device.

The display industry has undergone drastic changes from cathode-ray tubes (CRTs) to flat panel displays such as plasma display panels (PDPs), organic light-emitting diodes (OLEDs), and liquid-crystal displays (LCDs). Among them, LCD is thin and light, has excellent resolution and low power consumption, and is widely used as an image display device used in almost all industries.

In LCD, white light generated from a light source passes through a liquid crystal cell, and transmittance is controlled, and three primary colors that are transmitted through red, green, and blue color filters are mixed to realize a full color.

Dyeing methods, printing methods, electrodeposition methods and pigment dispersion methods are generally known as methods for producing color filters used in LCDs. Although methods of using dyes have been studied in the past, when using dyes, heat resistance, light resistance, The pigment dispersion method is generally applied because dyeing method is not economical because of complicated process because it has a lower problem than the pigment and is difficult to apply.

Pigment has a lower transparency than dyes but has been overcome by advances in pigment refinement and dispersion techniques. Since the color filter fabricated by the pigment dispersion method is pigment stable, it is stable to light, heat, solvent, etc., and when patterning by photolithography, it is easy to produce a color filter for a large screen and a high-precision color display, have.

The pigments used in the pigment dispersion type color filters include red, green and blue pigments, respectively, when forming RGB color filters, and may generally further contain yellow pigments, violet pigments and the like to more effectively express the colors .

In a method of manufacturing a color filter by the pigment dispersion method, a color filter solution is applied on a substrate by a spin coater and dried to form a coating film. Subsequently, a colored pixel is obtained by pattern exposure and development of a coating film, heat treatment is performed at a high temperature to obtain a first color pattern, and this operation is repeated according to the color coordinates to prepare a color filter.

With the recent spread of liquid crystal display devices, its use has been expanded to various monitors and TVs, and further improvement in color reproducibility has been demanded. In order to meet this demand, it is required to provide a color filter having a wider color reproduction range. Particularly, in TV applications, it is required to expand the color reproduction area more than ever.

Further, in addition to the enlargement of the color reproduction range, there is also a demand for improvement in display quality due to high brightness and high contrast. However, there is a trade-off relationship between the color reproduction range, the transmittance, the color reproduction range and the contrast ratio, and there is a problem that the transmittance and the contrast ratio are lowered when the color reproduction range is enlarged.

In this regard, Korean Patent Laid-Open Publication No. 2013-0131235 discloses a red coloring composition for a color filter. Pigment red 208 to C.I. Pigment red 177 or C.I. Pigment red 179 are used together to provide a sufficient tinting strength and brightness.

Further, Japanese Laid-Open Patent Application No. 2013-149592 discloses a benzimidazole pigment, C.I. Pigment red 179 and C.I. Pigment red 264 are mixed to propose a high color reproduction.

These patents provide improved color reproducibility and color purity of a color filter by using a plurality of red pigments in combination, thereby achieving a certain degree of color reproduction and improvement in color purity. However, Not only that, but the effect is not enough.

Korean Patent Publication No. 2013-0131235 Japanese Laid-Open Patent Application No. 2013-149592

As a result of various studies in order to obtain excellent coloring power and high color reproducibility and high brightness, Applicants have found that the above problems can be solved by using a red pigment and a yellow pigment in a specific content ratio.

Accordingly, an object of the present invention is to provide a red photosensitive resin composition capable of securing excellent color reproduction characteristics.

It is still another object of the present invention to provide a liquid crystal display device having a color filter including the red photosensitive resin composition and capable of realizing high quality and vivid image quality.

In order to achieve the above object, the present invention provides a coloring agent, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent,

The colorant may be C.I. Pigment red 264, C.I. A pigment red 254, and a yellow pigment.

Wherein the yellow pigment is selected from the group consisting of C.I. Pigment yellow 139.

At this time, the C.I. The pigment red color 264 is characterized by containing 1 to 10 parts by weight based on 1 part by weight of the yellow pigment.

At this time, the C.I. Pigment red 254 is contained in an amount of 0.01 to 1 part by weight based on 1 part by weight of the yellow pigment.

The present invention also provides a color filter made of the red photosensitive resin composition and a liquid crystal display device including the same.

The red photosensitive resin composition according to the present invention contains C.I. Pigment red 264, C.I. Pigment Red 254 and yellow pigments can be used together to achieve a high color reproduction range.

The color filter using the red photosensitive resin composition not only has excellent color reproduction characteristics but also improves tinting power by using a red pigment and a yellow pigment together as a coloring agent and the liquid crystal display device into which the color filter is introduced exhibits high color reproduction and high luminance characteristics Thereby realizing a vivid image quality.

The present invention provides a red photosensitive resin composition capable of reproducing a color in a color filter.

Generally, the color reproducibility of a liquid crystal display device is evaluated by the color coordinates (x, y) of light emitted from each pixel pixel of Red, Green and Blue. The high color reproduction area presented in the specification of the present invention is an area made up of (0.675, 0.308), (0.675, 0.305), (0.691, 0.305) on the color coordinate system and radiates light having a color coordinate close to the red color coordinate (0.680, 0.310) .

Particularly, in the present invention, a red photosensitive resin composition comprising a red pigment and a yellow pigment as essential components is presented as a coloring agent, and the coloring agent is C.I. Pigment red 264, C.I. The pigment red 254 and the yellow pigment are used in combination to improve the tinting power and color reproducibility of the color filter and to solve the problem of deterioration of the luminance characteristic occurring in a high color reproduction range. In addition, by manufacturing the pixel pixel of the color filter with the red photosensitive resin composition, it is possible to easily form a fine pattern.

In addition to the colorant, the red photosensitive resin composition according to the present invention includes an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent.

Each composition will be described below.

The colorant absorbs light in a specific wavelength range of incident light having a predetermined wavelength range and converts the light into light corresponding to each of red, green and blue. The colorant has excellent transmittance, contrast ratio, .

The colorant according to the present invention is a colorant. Pigment red 264, C.I. Pigment red 254 and a yellow pigment, said yellow pigment being selected from the group consisting of C.I. Pigment yellow 139.

The colorant is a red pigment C.I. Pigment red 264, C.I. Pigment Red 254 and C.I. Pigment yellow 139 are used together to exhibit the same color as in the case of using red pigment alone or in combination with red pigments, and it is possible to realize a high color reproduction range because of excellent coloring power.

The C.I. The pigment red color 264 is added in an amount of 1 to 10 parts by weight based on 1 part by weight of the yellow pigment, and the C.I. The pigment red 254 is preferably contained in an amount of 0.01 to 1 part by weight based on 1 part by weight of the yellow pigment. When used in the above-mentioned content ratio, not only high color reproduction is possible but also excellent coloring ability, contrast ratio and pattern forming property can be exhibited.

The coloring agent according to the present invention is a colorant. Pigment red 264, C.I. In addition to pigment red 254 and yellow pigments, it may further comprise red pigments commonly used in the art within the scope of the present invention.

For example, red pigments that can be used additionally represent red among the compounds classified as pigments in the color index (CI; published by The Society of Dyers and Colors) And a color index (CI) name such as "

Specifically, C.I. Pigment red 1, 2, 5, 9, 17, 31, 32, 41, 97, 105, 122, 123, 144, 149, 166, 168, 170, 171, 175, 176, 177, 178, 179, 180, 215, 216, 220, 221, 224, 242, 243, 255, 262, 265, 272, etc. may be used. Of these pigments, C.I. Pigment red 177 or C.I. Pigment Red 179 is preferred.

The content of such a colorant is 1 to 60% by weight, preferably 5 to 50% by weight, based on 100% by weight of the entire red photosensitive resin composition. If the content is less than the above range, the color density is not sufficient. Conversely, when the content exceeds the above range, the transmittance is lowered and the non-curing portion of the non-cured portion is lowered during development.

The colorant in the present invention can be used together with a dispersant and a dispersion aid, if necessary.

As the dispersing agent, for example, a suitable dispersing agent such as a cationic, anionic, or nonionic type can be used, but a polymeric dispersant is preferable. Specific examples thereof include acrylic copolymers, polyurethanes, polyesters, polyethyleneimines, polyallylamines, and the like. DISPERBYK-2000, DISPERBYK-2001, BYK-LPN6919 and BYK-LPN21116 (manufactured by BYK), Solsperse 5000 (manufactured by Lubrizol), and the like are commercially available. DisperBYK-162, DisperBYK-163, DisperBYK-165, DisperBYK-167, DisperBYK-170 and DisperBYK-182 (manufactured by BYK , Solsperse 24000 (manufactured by Lubrizol Corporation) as polyethyleneimine, Ajisper PB821, Ajisper PB822 and Ajisper PB880 (manufactured by Ajinomoto Fine Techno Co., Ltd.) as polyesters.

Examples of the dispersion aid include pigment derivatives, specifically, copper phthalocyanine, diketopyrrolopyrrole, and sulfonic acid derivatives of quinophthalone.

These dispersants may be used alone or in combination of two or more. The content of the dispersing agent is usually 100 parts by weight or less, preferably 1 to 70 parts by weight, more preferably 10 to 50 parts by weight, based on 100 parts by weight of the colorant. If the content of the dispersing agent is too large, there is a possibility that developability and the like are damaged.

The alkali-soluble resin constituting the red photosensitive resin composition of the present invention has reactivity and alkali solubility due to the action of light or heat and functions as a binder resin for a solid content including a colorant and functions as a binder resin. Any binder resin soluble in the alkaline developer used in the development step can be used.

The alkali-soluble resin according to the present invention is selected from those having an acid value of 30 to 150 (KOH mg / g). The acid value is a value measured as the amount (mg) of potassium hydroxide necessary to neutralize 1 g of the acrylic polymer, and is related to the solubility. If the acid value of the alkali-soluble resin is less than the above-mentioned range, it is difficult to secure a sufficient developing rate. Conversely, if the acid value exceeds the above range, the adhesion with the substrate is reduced, and short-circuiting of the pattern tends to occur. A problem occurs.

Further, in order to improve the surface hardness of the alkali-soluble resin for use as a color filter, the molecular weight and the molecular weight distribution (MW / MN) may be limited. Preferably, the weight average molecular weight is 3,000 to 200,000 Da, preferably 5,000 to 100,000 Da, and the molecular weight distribution is 1.5 to 6.0, preferably 1.8 to 4.0. The alkali-soluble resin having the above molecular weight and molecular weight distribution in the above range can improve the hardness and the high residual film ratio as mentioned above, as well as the solubility of the non-exposed portion in the developer and improve the resolution.

The alkali-soluble resin includes one selected from the group consisting of a polymer of a carboxyl group-containing unsaturated monomer, a copolymer of a monomer having a copolymerizable unsaturated bond and a combination thereof.

The carboxyl group-containing unsaturated monomer may be an unsaturated monocarboxylic acid, an unsaturated dicarboxylic acid, or an unsaturated tricarboxylic acid. Specifically, as the unsaturated monocarboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, α - there may be mentioned chloro-acrylic acid, cinnamic acid and the like. Examples of the unsaturated dicarboxylic acid include maleic acid, fumaric acid, itaconic acid, citraconic acid, and mesaconic acid. The unsaturated polycarboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride, citraconic anhydride and the like. The unsaturated polycarboxylic acid may also be a mono (2-methacryloyloxyalkyl) ester thereof, for example, succinic acid mono (2-acryloyloxyethyl), succinic acid mono (2-methacryloyloxyethyl ), Phthalic acid mono (2-acryloyloxyethyl), phthalic acid mono (2-methacryloyloxyethyl), and the like. The unsaturated polycarboxylic acid may be mono (meth) acrylate of the dicarboxylic polymer of both ends thereof, and examples thereof include ω -carboxypolycaprolactone monoacrylate and ω -carboxypolycaprolactone monomethacrylate . These carboxyl group-containing monomers may be used alone or in combination of two or more thereof

The monomer copolymerizable with the carboxyl group-containing unsaturated monomer may be an aromatic vinyl compound, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a carboxylic acid vinyl ester compound, An aliphatic conjugated diene compound, a macromonomer having a monoacryloyl group or monomethacryloyl group at the end of the molecular chain, a vulcanizable monomer, and a combination thereof in the group consisting of an ether compound, a vinyl cyanide compound, an unsaturated imide compound, an aliphatic conjugated diene compound, One selected paper is available.

More specifically, the copolymerizable monomers include styrene, α - methylstyrene, vinyltoluene o-, m- vinyltoluene, p- vinyltoluene, p- chlorostyrene, o- methoxystyrene, m- methoxystyrene, p- Vinylbenzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p-vinyl benzyl glycidyl Aromatic vinyl compounds such as ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, Acrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl Methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxy diethylene glycol acrylate, methoxy diethylene glycol methacrylate, methoxy triethylene glycol acrylate, methoxy triethylene glycol methacrylate Acrylate, methoxypropylene glycol methacrylate, methoxypropylene glycol acrylate, methoxydipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadiene Acrylate, dicyclopentadienyl methacrylate, adamantyl (meth) acrylate, (Meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate, glycerol monomethacrylate and the like Unsaturated carboxylic acid esters; Aminoethyl methacrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2- Unsaturated carboxylates such as methyl acrylate, ethyl acrylate, propyl methacrylate, isopropyl acrylate, isopropyl acrylate, isopropyl acrylate, isopropyl acrylate, isopropyl acrylate, Acid amino alkyl ester compounds; Unsaturated carboxylic acid glycidyl ester compounds such as glycidyl acrylate and glycidyl methacrylate; Carboxylic acid vinyl ester compounds such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; Unsaturated ether compounds such as vinyl methyl ether, vinyl ethyl ether and allyl glycidyl ether; Acrylonitrile, methacrylonitrile, α - chloro acrylonitrile, acrylic, vinyl cyanide compounds, such as cyanide-vinylidene; Unsaturated amides such as acrylamide, chloro, N -2- hydroxyethyl acrylamide, N -2- hydroxyethyl methacrylamide - acrylamide, methacrylamide, α; Unsaturated imide compounds such as maleimide, benzylmaleimide, N -phenylmaleimide and 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 molecular chain of polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, Macromonomers; A bulky monomer such as a monomer having a norbornyl skeleton, a monomer having an adamantane skeleton, or a monomer having a rosin skeleton which can lower the relative dielectric constant can be used.

The content of such an alkali-soluble resin is 5 to 85% by weight, preferably 10 to 70% by weight in 100% by weight of the entire red photosensitive resin composition. When the content of the alkali-soluble resin is in the range of 5 to 85% by weight, solubility in a developing solution is sufficient and pattern formation is easy, and reduction of the film portion of the pixel portion of the exposed portion is prevented at the time of development, .

The photopolymerizable compound is not particularly limited as long as it is a compound capable of polymerizing and curing upon irradiation with light such as ultraviolet rays and capable of being polymerized under the action of a photopolymerization initiator. The photopolymerizable compound may be a monofunctional monomer, a bifunctional monomer, or a multifunctional monomer having three or more functional groups as a component for enhancing the strength of a pattern.

Specific examples of the monofunctional monomer include acrylate, methacrylate, nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl Acrylate, and N-vinyl pyrrolidone. Commercially available products include Aronix M-101 (Doagosei), KAYARAD TC-110S (Nippon Kayaku) or Biscoat 158 (Osaka Yuki Kagaku Kogyo) .

Specific examples of the bifunctional monomer include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) (Acryloyloxyethyl) ether of bisphenol A and 3-methylpentanediol di (meth) acrylate. Commercially available products include Aronix M-210, M-1100, 1200 (Doagosei), KAYARAD HDDA (Nippon Kayaku), Viscoat 260 (Osaka Yuki Kagaku Kogyo), AH-600, AT-600 or UA-306H (Kyoeisha Chemical Co., Ltd.).

Specific examples of the polyfunctional photopolymerizable compound having three or more functional groups include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate (Meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (Meth) acrylate such as Aronix M-309, TO-1382 (Doagosei), KAYARAD TMPTA, KAYARAD DPHA or KAYARAD DPHA-40H (Nippon Kayaku).

Of the photopolymerizable compounds exemplified above, trifunctional or higher (meth) acrylate esters and urethane (meth) acrylates are particularly preferable because they have excellent polymerizability and can improve the strength.

The photopolymerizable compounds exemplified above may be used alone or in combination of two or more.

Such photopolymerizable compound may be contained in an amount of 1 to 50% by weight, preferably 5 to 40% by weight, based on 100% by weight of the entire red photosensitive resin composition. Such a content range is selected considering various tendencies such as the strength and smoothness of the pixel portion of the color filter, etc. If the content is less than the above range, the strength and smoothness are insufficient. On the other hand, A problem that the patterning is not easy due to the strength occurs, so that it is appropriately used within the above range.

The photopolymerization initiator is a compound for initiating polymerization of the above-described alkali-soluble resin and photopolymerizable compound by generating an active radical by irradiation with light, and the red photosensitive resin composition of the present invention containing the photopolymerization initiator has high sensitivity and good patterning .

The photopolymerization initiator in the present invention is not particularly limited, but may be an acetophenone, benzophenone, triazine, thioxanthone, oxime, benzoin, anthracene, anthraquinone, and imidazole compounds They may be used singly or in combination of two or more.

Acetophenone-based compounds include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 2- hydroxy- 1- [4- (2- Phenyl] -2-methylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- (4-methylthiophenyl) Oligomers of 2-dimethylamino-1- (4-morpholinophenyl) butan-1-one and 2-hydroxy-2-methyl [4- (1-methylvinyl) phenyl] propan- 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one is preferably usable.

Examples of the benzophenone compound include benzophenone, benzoyl benzoic acid, methyl benzoyl benzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 4,4'-bis (dimethylamino) benzophenone, (Diethylamino) benzophenone, and the like.

Examples of the triazine compound include 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s- triazine, 2- (3,4'-dimethoxysti (Trichloromethyl) -s-triazine, 2- (4'-methoxynaphthyl) -4,6-bis bis (trichloromethyl) -s-triazine, 2- (p-trityl) -4,6-bis Bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphtho l-yl) -4,6-bis (Trichloromethyl) -s-triazine, 2- (4-methoxynaphtho 1-yl) -4,6-bis (trichloromethyl) 6-triazine, 2,4-trichloromethyl (4'-methoxystyryl) -6-triazine, and the like.

Examples of the thioxanthone compound include 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone and 1-chloro-4-propanedioxanthone.

Oximeimino-1-phenylpropan-1-one, and o-ethoxycarbonyl-α-oximino-1-phenylpropan-1-one. Commercially available products include OXE-01 and OXE-02 manufactured by Ciba.

As the benzoin compound, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzyl dimethyl ketal and the like can be used.

Examples of the anthracene compound include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene and 2-ethyl-9,10-diethoxyanthracene .

Examples of the anthraquinone-based compounds include 2-ethyl anthraquinone, octamethylanthraquinone, 1,2-benzanthraquinone, 2,3-diphenylanthraquinone, and the like.

Examples of the nonimidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3-dichlorophenyl) 4,4 ', 5,5'-tetra (alkoxyphenyl) biimidazole, 2, 2'-bis (2-chlorophenyl) , 2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) biimidazole, phenyl groups in the 4,4', 5,5 ' Substituted imidazole compounds, and the like.

The content of the photopolymerization initiator may be 0.1 to 10% by weight, preferably 0.5 to 5% by weight, based on 100% by weight of the entire red photosensitive resin composition. If the content is less than the above range, the sensitivity may be lowered and the pattern may fall off during the developing process. On the contrary, if the content exceeds the above range, the physical properties of the coating film Can be lowered.

The photopolymerization initiator may further include a photopolymerization initiator to improve the sensitivity of the red photosensitive resin composition of the present invention. Since the red photosensitive resin composition according to the present invention contains a photopolymerization initiation auxiliary agent, the sensitivity can be further improved and the productivity can be increased.

Examples of the photopolymerization initiator include an amine compound, a carboxylic acid compound, and an organic sulfur compound having a thiol group.

Examples of the amine compound include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-dimethylamino benzoate Ethyl (4-dimethylaminobenzoic acid), 2-ethylhexyl 4-dimethylaminobenzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone Amino) benzophenone, and 4,4'-bis (ethylmethylamino) benzophenone. Of these, 4,4'-bis (diethylamino) benzophenone is preferable.

The carboxylic acid compound is not particularly limited and includes, for example, phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthioacetic acid, And aromatic heteroacetic acids such as phenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, and naphthoxyacetic acid.

The organic sulfur compound having a thiol group is not particularly limited, and examples thereof include 2-mercaptobenzothiazole, 1,4-bis (3-mercaptobutyryloxy) butane, 1,3,5-tris Butyloxethyl) -1,3,5-triazine-2,4,6 (1H, 3H, 5H) -thione, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis 3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate), tetraethylene glycol bis (3-mercaptopropionate Nate), and the like.

Such a photopolymerization initiator may be used alone or in combination of two or more thereof. Commercially available photopolymerization initiators can be used as the photopolymerization initiator. Commercially available photopolymerization initiators include, for example, EAB-F (trade name, manufactured by Hodogaya Chemical Industry Co., Ltd.).

When these photopolymerization initiators are used, the amount of the photopolymerization initiator is usually 10 moles or less, preferably 0.01 to 5 moles per mole of the photopolymerization initiator. Within the above range, the sensitivity of the red photosensitive resin composition of the present invention is higher, and the productivity of the color filter formed using the composition tends to be improved.

Any solvent may be used as long as it can dissolve or disperse the above-mentioned composition, and the solvent is not particularly limited in the present invention.

Representative examples are alkylene glycol monoalkyl ethers, alkylene glycol alkyl ether acetates, aromatic hydrocarbons, ketones, lower and higher alcohols, and cyclic esters. More specifically, examples of the solvent include alkylene 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; Alkylene glycol alkyl ether acetates such as methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate and methoxypentyl acetate, Ryu; Aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; Alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; Esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate; and cyclic esters such as ? -butyrolactone.

Among the above-mentioned solvents, an organic solvent having a boiling point of 100 to 200 ° C in the solvent is preferably used from the viewpoint of coatability and dryness, more preferably an alkylene glycol alkyl ether acetate, a ketone, a 3-ethoxypropionic acid Ethyl, and 3-methoxypropionate, and more preferred examples thereof include propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate, 3- Methyl propoxypropionate, and the like. These solvents may be used alone or in combination of two or more.

Such a solvent may be used as the balance to satisfy 100% by weight of the total composition, for example, 60 to 90% by weight, preferably 70 to 85% by weight. When contained within the above range, the dispersion stability of the composition and the easiness of processing (e.g., applicability) in the manufacturing process can be improved.

In addition, the red photosensitive resin composition according to the present invention may further contain known additives for various purposes. As such additives, additives such as fillers, other polymer compounds, surfactants, adhesion promoters, antioxidants, ultraviolet absorbers, anti-aggregation agents, and curing agents may be used in combination. These additives may be used alone or in combination of two or more, and it is preferable to use 1 wt% or less in the whole composition in consideration of light efficiency and the like.

Specific examples of the filler include glass, silica, alumina and the like.

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

The surfactant is a component for improving the film formability of the photosensitive resin composition, and examples thereof include polyoxyethylene alkyl ethers, polyoxyethylene alkylpethers, polyethylene glycol diesters, sorbitan fatty phase esters, fatty acid modified poly (Trade name) manufactured by Shin-Etsu Chemical Co., Ltd.), POLYFLOW (manufactured by Kyoeisha Chemical Co., Ltd.), and F- (EFTOP) (manufactured by TOKEM PRODUCTS INC.), MEGAFAC (manufactured by Dainippon Ink and Chemicals, Incorporated), Flourad (manufactured by Sumitomo 3M Limited), Asahi guard, Surflon (Manufactured by Asahi Glass Co., Ltd.), SOLSPERSE (manufactured by Genene Co., Ltd.), EFKA (manufactured by EFKA Chemicals) and PB 821 (manufactured by Ajinomoto Co., Ltd.).

Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N Aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (2-aminoethyl) (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3- Methoxysilane 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-t-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzothiazole and alkoxybenzophenone. Specific examples of the anti-aggregation agent include sodium polyacrylate.

The curing agent is a component for increasing deep curing and mechanical strength, and the type thereof is not particularly limited, and examples thereof include epoxy compounds, polyfunctional isocyanate compounds, melamine compounds, and oxetane compounds.

The epoxy compound is not particularly limited and includes, for example, bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin, hydrogenated bisphenol F epoxy resin, novolak epoxy resin, other aromatic epoxy resin, Epoxy resins, glycidyl ester resins, glycidyl amine resins, or brominated derivatives of such epoxy resins; Aliphatic, alicyclic or aromatic epoxy compounds other than epoxy resins and brominated derivatives thereof; Butadiene (co) polymeric epoxide; Isoprene (co) polymeric epoxide; Glycidyl (meth) acrylate (co) polymers; Triglycidyl isocyanurate and the like.

The oxetane compound is not particularly limited and includes, for example, carbonate bisoxetane, xylene bisoxetane, adipate bisoxetane, terephthalate bisoxetane, cyclohexanedicarboxylic acid bisoxetane and the like .

Further, in order to further increase the degree of curing, the red photosensitive resin composition according to the present invention may further comprise a curing auxiliary agent. The curing aid which can be used is not particularly limited in the present invention, and any curing aid known in the art can be used.

Representative examples are tertiary amines such as benzyldimethylamine, triethanolamine, triethylenediamine, dimethylaminoethanol and tri (dimethylaminomethyl) phenol; Imidazoles such as 2-methylimidazole and 2-phenylimidazole; Organic phosphines such as triphenylphosphine, diphenylphosphine and phenylphosphine; And tetraphenylboron salts such as tetraphenylphosphonium tetraphenylborate and triphenylphosphine tetraphenylborate.

The production of the red photosensitive composition as described above is not particularly limited in the present invention, and follows the known production method of the photosensitive composition.

For example, the coloring agent is mixed with a solvent in advance and dispersed using a bead mill or the like until the average particle diameter of the coloring agent becomes about 0.2 μm or less. At this time, a pigment dispersant may be used if necessary, and some or all of the alkali-soluble resin may be blended. The remaining part of the alkali-soluble resin, the photopolymerizable compound and the photopolymerization initiator, the other components to be used if necessary, and, if necessary, the additional solvent are further added to the obtained dispersion (hereinafter, also referred to as mill base) To obtain a desired red photosensitive resin composition.

The thus-prepared red photosensitive resin composition can be used to produce a color filter by wet coating. In this case, the wet coating method may be applied to a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater) May be used.

The present invention also provides a color filter made of the red photosensitive resin composition described above.

The red photosensitive resin composition according to the present invention contains C.I. Pigment red 264, C.I. Since the use of the pigment red 254 and the yellow pigment exhibits excellent coloring power, high color reproduction and high contrast ratio and does not cause a decrease in luminance even in high color reproduction and is excellent in pattern forming property, the color filter formed of the red photosensitive resin composition has high color reproduction range Lt; / RTI >

The color filter includes a substrate and a color layer formed on the substrate.

The substrate may be a substrate of the color filter itself, or may be a portion where the color filter is placed on a display device or the like, and is not particularly limited. The substrate may be glass, silicon (Si), silicon oxide (SiO _x ), or a polymer substrate. The polymer substrate may be polyethersulfone (PES) or polycarbonate (PC).

The color layer may be a layer containing the red photosensitive resin composition of the present invention, and may be a layer formed by applying the red photosensitive resin composition and exposing, developing, and thermally curing the red photosensitive resin composition in a predetermined pattern.

The color filter including the substrate and the color layer as described above may further include a partition wall formed between each color pattern, and may further include a black matrix. Further, it may further comprise a protective film formed on the color layer of the color filter.

Further, the present invention provides a liquid crystal display device provided with the color filter.

The liquid crystal display device of the present invention may include a configuration known to those skilled in the art without the color filter, and is not particularly limited in the present invention.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the invention and are not intended to limit the scope of the claims. It will be apparent to those skilled in the art that such variations and modifications are within the scope of the appended claims.

Production Example 1. Preparation of alkali-soluble resin

A flask equipped with a stirrer, a thermometer reflux condenser, a dropping funnel and a nitrogen inlet tube was provided with 74.8 g (0.20 mol) of benzylmaleimide, 43.2 g (0.30 mol) of acrylic acid, 118.0 g 4 g of t-butylperoxy-2-ethylhexanoate and 40 g of propylene glycol monomethyl ether acetate (PGMEA) were charged and stirred to prepare a n-dodecane 6 g of thiol and 24 g of PGMEA were added and stirred and mixed.

Thereafter, 395 g of PGMEA was introduced into the flask, the atmosphere in the flask was changed to nitrogen in air, and the temperature of the flask was raised to 90 캜 while stirring.

Then, the monomer and the chain transfer agent were added dropwise from the dropping funnel. The mixture was allowed to stand for 2 hours while maintaining a temperature of 90 ° C, and after elevated temperature of 110 ° C for 1 hour, the temperature was maintained for 3 hours, and then a gas introduction tube was introduced to prepare an oxygen / nitrogen mixed gas of 5/95 (v / v) And started bubbling.

Then, 28.4 g of [(0.10 mol) of glycidyl methacrylate, 33 mol% of the carboxyl group of the acrylic acid used in the present reaction), 2,2'-methylenebis (4-methyl-6-t- ) And 0.8 g of triethylamine were placed in a flask, and the reaction was continued at 110 DEG C for 8 hours. After cooling to room temperature, an alkali-soluble resin having a solid acid value of 70 mgKOH / g was obtained.

The weight average molecular weight (Mw) as measured by GPC in terms of polystyrene was 16,000 and the molecular weight distribution (Mw / Mn) was 2.3.

The weight average molecular weight (Mw) and the number average molecular weight (Mn) of the alkali-soluble resin were measured by the GPC method under the following conditions, and the ratio of the weight average molecular weight to the number average molecular weight / Mn).

 Apparatus: HLC-8120GPC (manufactured by TOSOH CORPORATION)

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

Column temperature: 40 DEG C

Mobile phase solvent: tetrahydrofuran

Flow rate: 1.0 ml / min

Injection amount: 50 μl

Detector: RI

Measurement sample concentration: 0.6 mass% (solvent = tetrahydrofuran)

Standard materials for calibration: TSK STANDARD POLYSTYRENE F-40, F-4, F-1, A-2500, A-500 (manufactured by TOSOH CORPORATION)

Examples 1 to 14 and Comparative Examples 1 to 13

A red photosensitive resin composition having the compositions and contents shown in Tables 1 and 2 below was prepared.

Furtherance
(weight%) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 Example 13 Example 14 coloring agent A-1 ¹⁾ 4.99 4.9 4.79 4.67 4.52 4.25 3.2 2.17 1.18 4.52 4.24 3.13 2 0.88 A-2 ²⁾ 0.1 0.22 0.36 0.53 0.74 0.35 0.3 0.25 0.18 0.35 0.35 0.32 0.3 0.28 A-3 ³⁾ 0.91 0.88 0.85 0.8 0.74 0.8 0.7 0.58 0.44 0.83 0.81 0.75 0.7 0.64 A-4 ⁴⁾ - - - - - 0.6 1.8 3 4.2 - - - - - A-5 ⁵⁾ - - - - - - - - - 0.3 0.6 1.8 3 4.2 Alkali-soluble resin ⁶⁾ 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 Photopolymerizable compound ⁷⁾ 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 Photopolymerization initiator B-1 ⁸⁾ 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 B-2 ⁹⁾ 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 Additive ¹⁰⁾ 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 Solvent ¹¹⁾ 85 85 85 85 85 85 85 85 85 85 85 85 85 85 1) CI pigment red 264
2) CI Pigment Red 254
3) CI pigment yellow 139
4) CI pigment red 177
5) CI Pigment Red 179
6) The resin prepared in Production Example 1
7) Dipentaerythritol hexaacrylate (Kayarad DPHA: manufactured by Nippon Kayaku Co., Ltd.)
8) 2-Benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one (Irgacure 369;
9) 4,4'-di (N, N'-dimethylamino) -benzophenone (EAB-F; manufactured by Hodogaya Chemical Co.,
10) DisperBYK-2001, manufactured by BYK
11) Propylene glycol monomethyl ether acetate

Furtherance
(weight%) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 Comparative Example 13 coloring agent A-1 ¹⁾ 5.06 4.34 4.12 3.56 - 3.2 0.6 0.9 2.44 0.87 1.14 1.42 - A-2 ²⁾ - One 1.32 2.2 0.61 2.8 0.99 1.19 - - - - - A-3 ³⁾ 0.94 0.66 0.56 0.24 - - - - - 4.53 3.66 2.78 0.25 A-4 ⁴⁾ - - - - 5.39 - 4.41 3.91 - - - - 5.75 A-5 ⁵⁾ - - - - - - - - 3.56 0.6 1.2 1.8 - Alkali-soluble resin ⁶⁾ 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 5.13 Photopolymerizable compound ⁷⁾ 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 3.31 Photopolymerization initiator B-1 ⁸⁾ 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 0.26 B-2 ⁹⁾ 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 0.13 Additive ¹⁰⁾ 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 Solvent ¹¹⁾ 85 85 85 85 85 85 85 85 85 85 85 85 85 1) CI pigment red 264
2) CI Pigment Red 254
3) CI pigment yellow 139
4) CI pigment red 177
5) CI Pigment Red 179
6) The resin prepared in Production Example 1
7) Dipentaerythritol hexaacrylate (Kayarad DPHA: manufactured by Nippon Kayaku Co., Ltd.)
8) 2-Benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one (Irgacure 369;
9) 4,4'-di (N, N'-dimethylamino) -benzophenone (EAB-F; manufactured by Hodogaya Chemical Co.,
10) DisperBYK-2001, manufactured by BYK
11) Propylene glycol monomethyl ether acetate

Experimental Example 1. Evaluation of Color Characteristics

 The red photosensitive resin compositions prepared in the above Examples and Comparative Examples were applied on a glass substrate (# 1737, Corning) by spin coating, then placed on a heating plate and held at a temperature of 100 ° C for 3 minutes to form a thin film.

 Subsequently, the thin film was irradiated at a light intensity of 100 mJ / cm 2 using a 1-kw high-pressure mercury lamp containing all of g, h and i lines. No special optical filter was used at this time.

The thin film irradiated with ultraviolet rays was immersed in a KOH aqueous solution of pH 10.5 for 2 minutes to develop.

The glass substrate coated with the thin film was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 220 캜 for 30 minutes to prepare a colored layer. The thickness of the produced colored layer was 1 to 5 mu m.

(1) Chromaticity and luminance

The chromaticity and luminance were measured using a colorimeter (OSP-SP2000, Olympus). The luminance is evaluated by the Y value, and the evaluation criteria of the luminance are as follows.

<Standard>

O: Y > 13.0

?: 12.0 < Y? 13.0

X: Y? 12.0

(2) Contrast (CR)

The contrast was measured using a contrast meter (BM-5A model, manufactured by Topcon), and the contrast of the glass substrate on which the colored layer was not formed was determined to be 30000. The obtained results are shown in Table 3 below.

The contrast evaluation criteria are as follows.

<Standard>

?: CR? 15000

?: 12000? CR <15000

?: 10000? CR <12000

X: CR &lt; 10000

(3) Tinting strength

The tinting strength is represented by the weight ratio (PWC) of the pigment as a coloring agent contained in the red photosensitive resin composition at the same chromaticity and film thickness. The obtained results are shown in Table 3 below.

The coloring strength evaluation criteria are as follows.

<Standard>

?: PWC <0.35

?: 0.35? PwC <0.45

X: PWC &gt; 0.45

Experimental Example 2. Evaluation of Pattern Formability

The red photosensitive resin compositions prepared in the above Examples and Comparative Examples were applied on a glass substrate (# 1737, manufactured by Corning), placed on a heating plate, and held at a temperature of 100 ° C for 3 minutes to form a thin film.

Subsequently, a test photomask having a pattern of changing the transmittance in the range of 1 to 100% in a stepwise manner was placed on the thin film, and an interval between the test photomask and the test photomask was set to 1000 탆 and a high pressure mercury lamp (USH-250D, (365 nm) at 40 mJ / cm &lt; 2 &gt; in an air atmosphere.

The ultraviolet-irradiated thin film was developed in a KOH aqueous solution of pH 12.5 for 80 seconds using a spray developing machine.

The glass substrate on which the thin film was coated was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 220 ° C for 20 minutes to prepare a color filter. The pattern shape (thin film) thickness of the manufactured color filter was 2.5 to 2.9 mu m.

Patterns were formed while reducing the amount of exposure relative to the initial exposure amount irradiated at the time of pattern formation, and the pattern formability was evaluated according to the ratio of the exposure amount (%) at which the pattern was formed. The obtained results are shown in Table 3 below.

The evaluation criteria for pattern formation are as follows.

<Standard>

?: Pattern formation property &lt; 0.2

?: 0.2? Pattern-forming property? 0.6

X: Pattern formation property &gt; 0.6

Luminance Contrast Coloring power Pattern forming property Example 1 ○ ○ △ ○ Example 2 ○ ○ △ ○ Example 3 ○ ○ △ ○ Example 4 ○ ○ △ ○ Example 5 ○ ○ △ ○ Example 6 ○ ◎ △ ○ Example 7 ○ ◎ △ ○ Example 8 ○ ◎ △ ○ Example 9 ○ ◎ △ ○ Example 10 △ ○ ○ ○ Example 11 △ ○ ○ ○ Example 12 △ ○ ○ ○ Example 13 △ ○ ○ ○ Example 14 △ ○ ○ ○ Comparative Example 1 X ○ △ X Comparative Example 2 ○ X △ X Comparative Example 3 ○ X △ X Comparative Example 4 ○ X △ X Comparative Example 5 ○ △ X X Comparative Example 6 ○ △ X X Comparative Example 7 ○ △ X X Comparative Example 8 ○ △ X X Comparative Example 9 △ △ X X Comparative Example 10 △ △ X X Comparative Example 11 △ △ X X Comparative Example 12 △ △ X X Comparative Example 13 △ △ X X

As can be seen from the above Table 3, the red photosensitive resin compositions of Examples 1 to 14 exhibited excellent contrast, coloring power, and pattern forming property as compared with Comparative Examples 1 to 13.

In the case of the chromaticity, the color coordinates in the CIE 1931 color space were x = 0.680 and y = 0.310, but in the case of the mixed use of the coloring agent according to the present invention, Respectively.

In Comparative Examples 2 to 8, it was confirmed that the chromaticity and the luminance were satisfactory but the contrast, tinting power and pattern formability were lowered.

The red photosensitive resin composition according to the present invention is introduced into a color filter of a liquid crystal display device to maintain a high tinting strength, a high color reproduction characteristic, and a high brightness, thereby realizing a high-quality and vivid image quality.

Claims (6)

A colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent,
Wherein the colorant comprises CI Pigment Red 264, CI Pigment Red 254 and a yellow pigment. The method of claim 1, wherein the yellow pigment is selected from the group consisting of C.I. Pigment yellow 139. The red photosensitive resin composition according to claim 1, The method according to claim 1,
The colorant was added to 1 part by weight of the yellow pigment
Wherein 1 to 10 parts by weight of CI pigment red 264 and 0.01 to 1 part by weight of CI pigment red 254 are contained. The red photosensitive resin composition according to claim 1, wherein the red photosensitive resin composition satisfies 100% by weight of the total composition
1 to 60% by weight of a colorant,
5 to 85% by weight of an alkali-soluble resin,
1 to 50% by weight of a photopolymerizable compound,
0.1 to 10% by weight of a photopolymerization initiator and
And the remaining part contains a solvent. A color filter produced by the red photosensitive resin composition according to any one of claims 1 to 4. A liquid crystal display device comprising the color filter of claim 5.