TWI670566B - Gray colored photosensitive resin composition, color filter and display device comprising the same - Google Patents

Abstract

The present invention relates to a gray photosensitive resin composition, a color filter produced using the same, and a display element comprising the same, the gray photosensitive resin composition comprising a pigment dispersion composition, an alkali-soluble resin, a photopolymerizable compound, and light The polymerization initiator and the solvent, the pigment dispersion composition contains at least one selected from the group consisting of a red pigment, a green pigment, a cyan pigment, a yellow pigment, and a violet pigment, and a black pigment, characterized in that the gray photosensitive resin composition is formed to have 2.5. When the cured film has a thickness of μm, the transmittance at a spectral wavelength of 460 nm to 530 nm is 30% or more and less than 75%, and the transmittance at a spectral wavelength of 580 nm to 620 nm is 20% or more and less than 75% at 690 nm. The transmittance at the wavelength of the 780 nm spectrum is 20% or more. The gray photosensitive resin composition of the present invention is excellent in the external light reflection preventing effect, and can replace the polarizing plate in the display element, thereby solving the high color (gray) reproducibility and the poor workability of the conventional gray photosensitive resin composition. problem.

Description

Gray photosensitive resin composition, color filter manufactured using the same, and display element including the same

FIELD OF THE INVENTION The present invention relates to a gray photosensitive resin composition, a color filter manufactured using the same, and a display element comprising the color filter.

Background of the Invention Recently, a display portion, a wiring, and the like are formed on a flexible substrate made of a plastic material such as a flexible material, and a flexible display element capable of image display even if curved like paper is attracting attention.

Flexible display elements can be used in a wide variety of applications, not only in computer monitors and televisions, but also in personal portable devices, in particular, Organic Light Emitting Display (OLED) and liquid crystal display devices (Liquid Crystal Display). Unlike LCDs, no additional light source is required, so a relatively thin thickness can be achieved. In this regard, organic light-emitting elements are actively being studied for flexible display elements.

On the other hand, in order to practically apply a flexible display element, it is necessary to realize full color when compared with a current variety of display products, power consumption must be small, and it must be easy to read even outdoors.

In this sense, the organic light-emitting element has the advantage of being a light source of a flexible display element because it has the advantage of realizing full color, low power consumption, and fast response speed. In the case of the current organic light-emitting element, an encapsulation barrier layer for protecting the organic light-emitting element from oxygen and moisture is required, and in order to be easy to read even outdoors, a polarizing plate is required ( Polarizer to maintain a high contrast ratio.

However, if a polarizing plate having a hard characteristic is applied, there is a disadvantage that the flexibility of the flexible display element is lowered. On the contrary, if the polarizing plate is not applied, the external light is transmitted into the flexible display element, reflected again and emitted, and mixed with the light originally emitted by the organic light emitting element, and the light-dark ratio under the external light source is greatly reduced.

Thus, it has recently been actively studied to improve it. As an example, Korean Patent Publication No. 10-2013-0134494 proposes a coloring agent containing a green coloring agent and a yellow coloring agent, a binder resin, and a blocked isocyanate group. An ink composition containing a coloring agent containing a red coloring agent and a green coloring agent, a binder resin, and a blocked isocyanate group is proposed in the ink composition of the Korean Patent Publication No. 10-2013-0134498. However, in the case of the above-described prior art, there is a disadvantage that the selection range of the color material is limited when high color reproducibility is realized, and at the same time, the realization of various color regions is insufficient, and there are line defects and, for example, eclipse in pattern formability. The processability of the etc. is insufficient, so that continuous improvement is required in the technical field.

Prior art literature Patent literature

Patent Document 1: Korean Patent Publication No. 10-2013-0134494

Patent Document 2: Korean Patent Publication No. 10-2013-0134498

Summary of invention

Therefore, an object of the present invention is to solve the problem of insufficient high-color (gray) reproducibility and workability in the related art, and to provide a gray photosensitive resin composition which can replace the polarizing plate and is excellent in preventing external light reflection.

Further, an object of the present invention is to provide a color filter manufactured using the above-described gray photosensitive resin composition and a display element including the above-described color filter.

The present invention provides a gray photosensitive resin composition comprising a pigment dispersion composition, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent, wherein the pigment dispersion composition comprises a red pigment selected from the group consisting of One or more of a green pigment, a cyan pigment, a yellow pigment, and a violet pigment, and a black pigment, characterized in that the gray photosensitive resin composition is formed at a spectral wavelength of 460 nm to 530 nm when formed into a cured film having a thickness of 2.5 μm. The transmittance is 30% or more and less than 75%, the transmittance at a spectral wavelength of 580 nm to 620 nm is 20% or more and less than 75%, and the transmittance at a spectral wavelength of 690 nm to 780 nm is 20% or more.

In one embodiment, when the gray photosensitive resin composition is formed into a cured film having a thickness of 2.5 μm, the transmittance at a spectral wavelength of 460 nm to 530 nm may be 30% or more and less than 75%, and a spectral wavelength of 580 nm to 620 nm is obtained. The transmittance may be 20% or more and less than 75%, and the transmittance at a spectral wavelength of 690 nm to 780 nm may be 20% or more.

In one embodiment, the black pigment may be from 0.5 to 10% by weight based on the total solid content of the colorant.

In another embodiment, the weight ratio of one or more selected from the group consisting of a red pigment, a green pigment, a cyan pigment, a yellow pigment, and a violet pigment to a black pigment may be from 99.5 to 90:10 to 0.5.

In still another embodiment, the gray photosensitive resin composition may contain 1 to 70% by weight of the pigment dispersion composition, 5 to 80% by weight of the alkali-soluble resin, and light, based on the total weight of the solid content of the gray photosensitive resin composition. 5 to 50% by weight of the polymerizable compound may include 0.1 to 40% by weight of the photopolymerization initiator based on the total content of the solid content of the alkali-soluble resin and the photopolymerizable compound, and may include a solvent based on the gray photosensitive resin composition. 25 to 80% by weight.

In still another embodiment, the red pigment may include one or more selected from the group consisting of C.I. Pigment Red 179, C.I. Pigment Red 177, C.I. Pigment Red 209, C.I. Pigment Red 242, and C.I. Pigment Red 254.

In still another embodiment, the green pigment may include one or more selected from the group consisting of C.I. Pigment Green 36, C.I. Pigment Green 58 and C.I. Pigment Green 59.

In still another embodiment, the cyan pigment may comprise a color selected from the group consisting of CI Pigment Blue 15:3, CI Pigment Blue 15:4, CI Pigment Blue 15:6, CI Pigment Blue 21, CI Pigment Blue 28, CI Pigment Blue 60, CI One or more of Pigment Blue 64 and CI Pigment Blue 76.

In still another embodiment, the yellow pigment may include one or more selected from the group consisting of C.I. Pigment Yellow 138, C.I. Pigment Yellow 150, and C.I. Pigment Yellow 185.

In still another embodiment, the purple pigment may comprise a pigment selected from the group consisting of CI Pigment Violet 14, CI Pigment Violet 19, CI Pigment Violet 23, CI Pigment Violet 29, CI Pigment Violet 32, CI Pigment Violet 33, CI Pigment Violet 36, CI Pigment. One or more of Violet 37 and CI Pigment Violet 38.

In still another embodiment, the black pigment may include one or more selected from the group consisting of pigments obtained by mixing red, cyan, and green, C.I. pigment black 1, C.I. pigment black 7, carbon black, organic black, and titanium black.

Further, the present invention provides a color filter manufactured using the above-described gray photosensitive resin composition.

Further, the present invention provides a display element comprising the above color filter.

In one embodiment, the display element can be a flexible display element.

In another embodiment, the display element can be an organic light emitting element.

The gray photosensitive resin composition of the present invention is characterized in that the external light reflection preventing effect is extremely excellent, and a polarizing plate can be replaced in the display element. Further, it is also characterized in that the high color (gray) reproducibility and the workability of the conventional coloring photosensitive resin composition are insufficient. In particular, the above gray photosensitive resin composition is characterized in that, when formed into a cured film having a thickness of 2.5 μm, a transmittance at a spectral wavelength of 460 nm to 530 nm is 30% or more and less than 75%, and a spectral wavelength of 580 nm to 620 nm is obtained. The transmittance at the site is 20% or more and less than 75%, and the transmittance at the spectral wavelength of 690 nm to 780 nm is 20% or more. When the gray photosensitive resin composition is formed into a cured film having a thickness of 2.5 μm, when the transmittance at a spectral wavelength of 460 nm to 530 nm is 75% or more, the external light reflection preventing effect is insufficient, and the light-dark ratio is lowered. In 30% of cases, the color purity sometimes decreases. When the transmittance at a spectral wavelength of 580 nm to 620 nm is 75% or more, the effect of preventing external light reflection is insufficient, and the light-dark ratio is reduced. When the transmittance is less than 20%, the color purity may be lowered. When the transmittance at a spectral wavelength of 690 nm to 780 nm is less than 20%, the efficiency of the light source may be lowered due to insufficient transmittance.

detailed description

The present invention relates to a gray photosensitive resin composition, a color filter manufactured using the same, and a display element including the above-described color filter, which can replace the use of a polarizing plate in a display by having a gray pixel.

The present invention is characterized in that, as a composition of the gray photosensitive resin composition, the pigment dispersion composition contains at least one selected from the group consisting of a red pigment, a green pigment, a cyan pigment, a yellow pigment, and a violet pigment, and a black pigment, thereby preventing external The light reflection effect is excellent, and the polarizing plate can be replaced in the display element.

The invention is explained in detail below.

Pigment dispersion composition

The pigment dispersion composition may be contained in an amount of 1 to 70% by weight based on the total weight of the solid content of the gray photosensitive resin composition, preferably 2 to 60% by weight, and more preferably 3 to 50% by weight. .

The pigment (a1) contained in the above pigment dispersion composition must contain at least one pigment selected from the group consisting of a red pigment, a green pigment, a cyan pigment, a yellow pigment, and a violet pigment, and a black pigment. The weight ratio of one or more pigments selected from the red pigment, the green pigment, the cyan pigment, the yellow pigment, and the violet pigment to the black pigment may be from 99.5 to 90:10 to 0.5.

The black pigment which can be used in the present invention can be used without any particular limitation, for example, a pigment which can be mixed with red, cyan and green, CI Pigment Black 1 and 7, carbon black, organic black and titanium. Black or the like is used singly or in combination of two or more kinds, preferably One type selected from the group consisting of carbon black and organic black can be used.

In the present invention, the black pigment may be 0.5 to 10% by weight based on the total weight of the solid content of the colorant, and the coloring matter means a dye and a pigment contained in the pigment dispersion composition. When the above range is satisfied, it is advantageous in terms of prevention of external light reflection effect and visibility.

Pigment (a1)

The red pigment of the present invention may be selected from the group consisting of CI Pigment Red 9, 97, 105, 122, 123, 144, 149, 166, 168, 176, 177, 180, 192, 215, 216, 224, 242, 254, 255 and One or more of 264, among them, CI Pigment Red 179, CI Pigment Red 177, CI Pigment Red 209, CI Pigment Red 242, and CI Pigment Red 254 are preferable.

The green pigment of the present invention may be one or more selected from the group consisting of C.I. Pigment Greens 10, 15, 25, 36, 47, 58 and 59. Among them, C.I. Pigment Green 36, C.I. Pigment Green 58 and C.I. Pigment Green 59 are preferred.

The cyan pigment of the present invention may be one or more selected from the group consisting of CI Pigment Blue 15 (15:3, 15:4, 15:6, etc.), 21, 28, 60, 64, and 76. Among them, CI Pigment Blue 15 is preferred. : 3, CI Pigment Blue 15:4, CI Pigment Blue 15:6, CI Pigment Blue 21, CI Pigment Blue 28, CI Pigment Blue 60, CI Pigment Blue 64, and CI Pigment Blue 76.

The yellow pigment of the present invention may be selected from the group consisting of CI Pigment Yellow 13, 20, 24, 31, 53, 83, 86, 93, 94, 109, 110, 117, 125, 129, 137, 138, 139, 147, 148. One or more of 150, 153, 154, 166, 173, 180, and 185, among which, CI Pigment Yellow 138, CI Pigment Yellow 150, and CI Pigment Yellow 185 are preferable.

The purple pigment of the present invention may be one or more selected from the group consisting of CI Pigment Violet 14, 19, 23, 32, 33, 36, 37 and 38, and preferably CI Pigment Violet 14, CI Pigment Violet 19, CI Pigment Violet 23, CI Pigment Violet 29, CI Pigment Violet 32, CI Pigment Violet 33, CI Pigment Violet 36, CI Pigment Violet 37, and CI Pigment Violet 38.

The black pigment of the present invention may be one or more selected from the group consisting of a pigment obtained by mixing red, cyan, and green, CI Pigment Black 1, CI Pigment Black 7, carbon black, an organic black pigment, and a titanium black pigment. Carbon black.

More specifically, the above black pigment can be used by mixing carbon black with two or more coloring pigments to produce a mixed coloring dispersion. Examples of the carbon black that can be used include CHBK-17 of Yuko Co., Ltd.; Sean 5HIISAFHS, Sean KH, Seast 3HHAF-HS, Seast NH, Seast 3M, Seast 300HAF-LS, and Seat 116HMMAF of Tokai Carbon Co., Ltd. -HS, Seast 116MAF, Seast FMFEF-HS, Seast SOFEF, Seast VGPF, Seast SVHSRF-HS, and Seast SSRF; Mitsubishi Chemical Corporation's Diagram Black II, Diagram Black N339, Diagram Black SH, Diagram Black H, Diagram LH, Diagram HA, Diagram SF, Diagram N550M, Diagram M, Diagram E, Diagram G, Diagram R, Diagram N760M, Diagram LR, # 2700, # 2600, # 2400, # 2350, # 2300, # 2200, # 1000, # 980 , #900, MCF88, #52, #50, #47, #45, #45L, #25, #CF9, #95, #3030, #3050, MA7, MA77, MA8, MA11, OIL7B, OIL9B, OIL11B, OIL30B and OIL31B; Depence's PRINTEX-U, PRINTEX-V, PRINTEX-140U, PRINTEX-140V, PRINTEX-95, PRINTEX-85, PRINTEX-75 , PRINTEX-55, PRINTEX-45, PRINTEX-300, PRINTEX-35, PRINTEX-25, PRINTEX-200, PRINTEX-40, PRINTEX-30, PRINTEX-3, PRINTEX-A, SPECIAL BLACK-550, SPECIAL BLACK-350 , SPECIAL BLACK-250, SPECIAL BLACK-100 and LAMP BLACK-101; Columbia Carbon Co., Ltd. RAVEN-1100ULTRA, RAVEN-1080ULTRA, RAVEN-1060ULTRA, RAVEN-1040, RAVEN-1035, RAVEN-1020, RAVEN-1000, RAVEN-890H, RAVEN-890, RAVEN-880ULTRA, RAVEN-860ULTRA, RAVEN-850, RAVEN-820, RAVEN-790ULTRA, RAVEN-780ULTRA, RAVEN-760ULTRA, RAVEN-520, RAVEN-500, RAVEN-460, RAVEN- 450, RAVEN-430ULTRA, RAVEN-420, RAVEN-410, RAVEN-2500ULTRA, RAVEN-2000, RAVEN-1500, RAVEN-1255, RAVEN-1250, RAVEN-1200, RAVEN-1190ULTRA and RAVEN-1170.

The carbon black is not particularly limited as long as it is a light-shielding pigment, and a known carbon black can be used. Carbon as the above black pigment Black, specifically, channel black, furnace black, thermal black, lamp black, and the like are exemplified.

The content of the pigment (a1) may be in the range of 1 to 70% by weight, preferably 2 to 60% by weight, based on the total weight of the solid content in the pigment dispersion composition (A). When the content of the pigment is in the range of 1 to 70% by weight based on the above-mentioned basis, the viscosity is low, the storage stability is excellent, the dispersion efficiency is high, and it is effective for the increase in the light-dark ratio, and therefore it is preferable.

The above pigment is preferably a pigment dispersion liquid in which the particle diameter is uniformly dispersed. An example of a method for uniformly dispersing the particle diameter of the pigment is a method in which a pigment dispersant (a2) is dispersed and treated, and according to the method, a state in which the pigment is uniformly dispersed in a solution can be obtained. Pigment dispersion.

Pigment dispersant (a2)

By adding the above-described pigment dispersant (a2) for the deagglomeration of the pigment and maintaining the stability, the pigment dispersant generally used in the art can be used without limitation. It is preferable to contain an acrylate-based dispersing agent (hereinafter referred to as an acrylic dispersing agent) containing BMA (butyl methacrylate) or DMAEMA (N,N-dimethylaminoethyl methacrylate). In this case, the acrylic dispersant is preferably an acrylic dispersant produced by the activity control method mentioned in Korean Patent Publication No. 2004-0014311, and is commercially available as an acrylate dispersant produced by the above activity control method. , can be listed DISPER BYK-2000, DISPER BYK-2001, DISPER BYK-2070, DISPER BYK-2150, etc.

The acrylic dispersing agents exemplified above can be used alone or in combination of two or more. In addition to the above acrylic dispersant, the above-described pigment dispersant (a2) may be a pigment dispersant of another resin type. Examples of the other resin type pigment dispersant include a known resin type pigment dispersant, in particular, a polycarboxylate represented by a polyurethane or a polyacrylate, an unsaturated polyamine, a polycarboxylic acid, or a polycarboxylic acid. (partial) amine salts, ammonium salts of polycarboxylic acids, alkylamine salts of polycarboxylic acids, polyoxyalkylene oxides, long chain polyaminoguanamine phosphates, esters of hydroxyl-containing polycarboxylic acids and their modifications An oily dispersant such as a mercapto or a guanamine or a salt thereof formed by a reaction of a polyester having a free carboxyl group and a poly(lower alkyleneimine); (meth)acrylic acid-styrene a water-soluble resin or a water-soluble polymer compound such as a copolymer, a (meth)acrylic acid-(meth)acrylate copolymer, a styrene-maleic acid copolymer, a polyvinyl alcohol, or a polyvinylpyrrolidone; a polyester Modified polyacrylate; addition product of ethylene oxide/propylene oxide and phosphate ester.

As a commercial product of the above-mentioned resin-type dispersing agent, as a cationic-type resin dispersing agent, the brand name of BYK chemical company: DISPER BYK-160, DISPER BYK-161, DISPER BYK-162, DISPER BYK is mentioned, for example. -163, DISPER BYK-164, DISPER BYK-166, DISPER BYK-171, DISPER BYK-182, DISPER BYK-184; BASF's 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; Lubirzol Product name: SOLSPERS-24000, SOLSPERS-32550, NBZ-4204/10; Chuanyan Fine Chemicals Co., Ltd. trade name: HINOACT T-6000, HINOACT T-7000, HINOACT T-8000; Ajinomoto Co., Ltd. Trade name: AJISPUR PB-821, AJISPUR PB-822, AJISPUR PB-823; trade name of Kyoeisha Chemical Co., Ltd.: FLORENE DOPA-17HF, FLORENE DOPA-15BHF, FLORENE DOPA-33, FLORENE DOPA-44, etc. In addition to the above-mentioned acrylic dispersant, the other resin type pigment dispersing agents may be used singly or in combination of two or more kinds, and may be used in combination with an acrylic dispersing agent.

The amount of the pigment dispersant (a2) used is 5 to 60 parts by weight, and more preferably 15 to 50 parts by weight, based on 100 parts by weight of the solid content of the pigment (a1) to be used. When the content of the pigment dispersant (a2) satisfies the above range, it is advantageous in terms of viscosity and microparticulation of the pigment, and the possibility of occurrence of problems such as gelation after dispersion can be reduced.

Dispersing aid (a3)

The dispersing aid (a3) is a preparation which exhibits an action of dispersing a pigment into fine particles and preventing re-agglomeration. The dispersing aid is effective for forming a coloring layer having a high light-dark ratio and excellent transparency.

As a dispersion aid which can be used in the present invention, for example 1,8-diamino-4,5-dihydroxyindole, 1,5-bis{[2-(diethylamino)ethyl]amino}indole-9,10-fluorene, 1,8-bis ( Benzalamine) 蒽醌, 1,4-bis{[2-(4-hydroxyphenyl)ethyl]amino} 蒽-9,10-醌, 1,4-bis{[2-(dimethyl) Amino)ethyl]amino}-5,8-dihydroxyindole-9,10-indole, 1,8-dihydroxy-4-[4-(2-hydroxyethyl)anilino]-5-nitroindole -9,10-oxime, 1,4-dihydroxyindole, 1,4-bis(4-butylanilino)-5,8-dihydroxyindole, 4'-(4-hydroxy-1-indole Mercaptoamino)-N-ethylmercaptoaniline, 1,4-bis[(2,6-diethyl-4-methylphenyl)amino]indole, 1,4-bis(butylamino)- 9,10-nonanedione, 1,4-bis(4-butylanilino)-5,8-dihydroxyindole, 1,5-bis[(3-methylphenyl)amino]-9, 10-decanedione, 1,5-dicyclohexylaminopurine, 1,4-bis(isopropylamino)phosphonium, 1,4-bis(methylamino)phosphonium, 1,4-double ( 2,6-Diethyl-4-methylanilino), 2,2'-(9,10-dioxoindole-1,4-diyldiimino) bis(5-methylsulfonate) Acid ester), 1-anilino-4-hydroxyindole, 1-hydroxy-4-[(4-methylphenyl)amino]-9,10-nonanedione, 1,4-bis(p-tolyl) Amino) guanidine, 1-amino-4-phenylaminopurine N-[4-[(4-Hydroxy-indol-1-yl)amino]phenyl]acetamide, 1-(methylamino)-4-(4-methylanilino)indole-9,10 - Diketone and 1,4,5,8-tetrahydroxyindole and the like.

In addition to the above-mentioned dispersion aid, a commercially available dispersion aid may be additionally contained as needed. Specifically, Lubrizol's SOLSPERSE-5000, SOLSPERSE-12000, SOLSPERSE-22000, BYK-SYNERGIST2100, BYK-SINERGIST 2105, BASF's EFKA-6745 or EFKA-6750 can be cited.

1 to 30 parts by weight of the above-mentioned dispersion aid is contained with respect to 100 parts by weight of the pigment in the colorant. When the content of the dispersion aid satisfies the above range, the color deterioration inherent to the pigment dispersion composition or the possibility of discoloration due to hard baking during the colored layer production step can be lowered.

Dispersing solvent (a4)

The dispersion solvent (a4) is not particularly limited, and various organic solvents used in the field can be used.

Specific examples thereof include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether; Diethylene glycol dialkyl ethers such as alcohol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, methyl cellosolve acetate, ethyl Ethylene glycol alkyl ether acetate such as cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate , alkylene glycol alkyl ether acetates such as methoxypentyl acetate, aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene, methyl ethyl ketone, acetone, methyl amyl ketone, methyl Ketones such as isobutyl ketone and cyclohexanone, alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, glycerol, ethyl 3-ethoxypropionate, 3-methoxy An ester such as methyl propyl propionate or a cyclic ester such as γ-butyrolactone. Preferably, an alkylene glycol alkyl ether acetate, a ketone, an ester of 3-ethoxypropionate or methyl 3-methoxypropionate can be used, and more preferably, propylene glycol can be used. Monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate or methyl 3-methoxypropionate.

The above dispersing solvents can each be used individually or will be 2 More than one kind of mixture is used.

The dispersion solvent may be contained in an amount of 60 to 90% by weight based on the total weight of the pigment dispersion composition, and preferably may be contained in an amount of 70 to 85% by weight. When the content of the dispersion solvent satisfies the above range, the possibility that the storage stability of the pigment dispersion composition becomes poor can be reduced.

Dispersing resin (a5)

The above-mentioned dispersion resin (a5) functions as a dispersion medium of the pigment dispersion composition (A), and can be selectively added, and if the dispersion resin (a5) is used in combination, it can be used in combination with the use of the dispersant (a2) alone. A more excellent pigment dispersion composition is produced. In the case of dispersing the resin, it can be used without limitation as long as it functions as a dispersion medium. However, in view of the developability of the gray photosensitive resin composition produced by the pigment dispersion composition, it is preferred to have solubility in the alkali developer. A dispersion resin having an acid value.

Here, the acid value is a value measured as the amount (mg) of potassium hydroxide required to neutralize 1 g of the acrylic polymer, and is usually determined by titration using a potassium hydroxide aqueous solution. In the case of a dispersion resin having an acid value, a compound (b1) having a carboxyl group and an unsaturated bond, and a compound (b2) having an unsaturated bond copolymerizable with the above compound (b1) can be produced by copolymerization.

Specific examples of the compound (b1) having a carboxylic acid group and an unsaturated bond include monocarboxylic acids such as acrylic acid, methacrylic acid, and crotonic acid; and dicarboxylic acids such as fumaric acid, mesaconic acid, and itaconic acid; And an acid anhydride of the above dicarboxylic acid; ω-carboxypolycaprolactone mono(meth)acrylate, etc. A mono(meth)acrylate or the like having a polymer having a carboxyl group and a hydroxyl group at the end is preferably acrylic acid or methacrylic acid. In the present invention, (meth) acrylate means acrylate, methacrylate or both.

The compounds exemplified as the above compound (b1) can be used singly or in combination of two or more kinds. Examples of the compound (b2) having an unsaturated bond copolymerizable with the above compound (b1) include styrene, vinyl toluene, α-methylstyrene, p-chlorostyrene, o-methoxystyrene, and the like. M-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, p-vinylbenzyl methyl ether, o-vinyl An aromatic vinyl compound such as benzyl glycidyl ether, m-vinylbenzyl glycidyl ether or p-vinylbenzyl glycidyl ether; methyl (meth)acrylate or ethyl (meth)acrylate , n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, sec-butyl (meth)acrylate or (methyl) (meth)acrylic acid alkyl esters such as t-butyl acrylate; cyclopentyl (meth)acrylate, cyclohexyl (meth)acrylate, 2-methylcyclohexyl (meth)acrylate, (methyl) Alicyclic (meth) acrylate such as tricyclo[5.2.1.02,6]decane-8-yl acrylate, 2-dicyclopentyloxyethyl (meth)acrylate or isobornyl (meth)acrylate Class; (methyl) (A) aryl (meth) acrylate such as phenyl acrylate or benzyl (meth) acrylate; 2-hydroxyethyl (meth) acrylate or 2-hydroxypropyl (meth) acrylate (meth) acrylate Hydroxyalkyl esters; N-cyclohexyl maleimine, N-benzyl maleimide, N-phenyl maleimine, N-o-hydroxyphenyl maleimide, N -m-hydroxyphenylmaleimide, N-p-hydroxyl Phenylphenylmaleimide, N-o-methylphenylmaleimide, N-m-methylphenylmaleimide, N-p-methylphenylmaleimide , N-o-methoxyphenyl maleimide, N-m-methoxyphenyl maleimide, N-p-methoxyphenyl maleimine, etc. N-substituted horse An imine amine compound such as (meth)acrylamide or N,N-dimethyl(meth)acrylamide; 3-(methacryloxymethyl)oxalate Cyclobutane, 3-(methacryloxymethyl)-3-ethyloxetane, 3-(methacryloxymethyl)-2-trifluoromethyloxetane Alkane, 3-(methacryloxymethyl)-2-phenyloxetane, 2-(methacryloxymethyl)oxetane or 2-(methacryl oxime) The unsaturated oxetane compound such as oxymethyl)-4-trifluoromethyloxetane is not limited thereto.

The compounds exemplified as the above compound (b2) can be used singly or in combination of two or more kinds.

The dispersion resin is contained in an amount of 5 to 60 parts by weight, preferably 10 to 50 parts by weight, based on 100 parts by weight of the pigment solid content in the colorant. When the content of the dispersion resin satisfies the above range, the possibility of increasing the viscosity or dispersing the finely divided pigment dispersion composition due to the dispersion of the resin can be reduced.

Dye (a6)

The dye may be selectively contained in the pigment dispersion composition, and the dye may be used without limitation as long as it has solubility in an organic solvent. Preferably, it is preferred to use solubility in an organic solvent and to ensure solubility, heat resistance and resistance to alkali developing solution A dye that is reliable in terms of formulation and the like. As the dye, an acid dye selected from the group consisting of an acid dye having an acidic group such as a sulfonic acid or a carboxylic acid, a salt of an acid dye and a nitrogen-containing compound, a sulfonamide of an acid dye, and the like, and a dye thereof can be used. Acid dyes of azo, ton, and phthalocyanine and their derivatives can also be selected.

Preferably, the above-mentioned dyes include a compound classified as a dye in the excellent index (published by The Society of Dyers and Colourists), and a known dye described in the dyeing note (color dyeing company).

Specific examples of the dye include CI solvent yellows 4, 14, 15, 21, 23, 24, 38, 62, 63, 68, 82, 94, 98, 99, and 162; CI solvent; Red 8, 45, 49, 122, 125 and 130; CI Solvent Orange 2, 7, 11, 15, 26 and 56; CI Solvent Blue 35, 37, 59 and 67; CI Solvent Green 1, 3, 4, 5, Green dyes such as 7, 28, 29, 32, 33, 34 and 35.

Further, as the CI acid dye, CI acid yellow 1, 3, 7, 9, 11, 17, 23, 25, 29, 34, 36, 38, 40, 42, 54, 65, 72, 73, 76 can be cited. , 79, 98, 99, 111, 112, 113, 114, 116, 119, 123, 128, 134, 135, 138, 139, 140, 144, 150, 155, 157, 160, 161, 163, 168, 169 , 172, 177, 178, 179, 184, 190, 193, 196, 197, 199, 202, 203, 204, 205, 207, 212, 214, 220, 2, 2, 2, 8, 14, 17, 18, 26, 27, 29, 31, 13, 35, 37 , 44, 50, 51, 52, 57, 66, 73, 80, 87, 88, 91, 92, 94, 97, 103, 111, 114, 129, 133, 134, 138, 143, 145, 150, 151 , 158, 176, 182, 183, 198, 206, 211, 215, 216, 217, 227, 228, 249, 252, 257, 258, 260, 261, 266, 268, 270, 274, 277, 280, 281 , 195, 308, 312, 315, 316, 339, 341, 345, 346, 349, 382, 383, 394, 401, 412, 417, 418, 422 and 426; CI Acid Orange 6, 7, 8, 10, 12, 26, 50, 51, 52, 56, 62, 63, 64, 74, 75, 94, 95, 107, 108, 169 and 173; CI Acid Blue 1, 7, 9, 15, 18, 23, 25 , 27, 29, 40, 42, 45, 51, 62, 70, 74, 80, 83, 86, 87, 90, 92, 96, 103, 112, 113, 120, 129, 138, 147, 150, 158 , 171, 182, 192, 210, 242, 243, 256, 259, 267, 278, 280, 285, 290, 296, 315, 324: 1, 335 and 340; CI Acid Violet 6B, 7, 9, 17 and 19; CI Acid Green 1 Dyes such as 3, 5, 9, 16, 25, 27, 50, 58, 63, 65, 80, 104, 105, 106 and 109.

Further, examples of the CI direct dye include CI direct yellow 2, 33, 34, 35, 38, 39, 43, 47, 50, 54, 58, 68, 69, 70, 71, 86, 93, 94, 95. , 98, 102, 108, 109, 129, 136, 138, and 141; CI Direct Red 79, 82, 83, 84, 91, 92, 96, 97, 98, 99, 105, 106, 107, 172, 173, 176, 177, 179, 181, 182, 184, 204, 207, 211, 213, 218, 220, 221, 222, 232, 233, 234, 241, 243, 246 and 250; CI direct orange 34, 39, 41, 46, 50, 52, 56, 57, 61, 64, 65, 68, 70, 96, 97, 106 and 107; CI direct blue 38, 44, 57, 70, 77, 80, 81, 84, 85, 86, 90, 93, 94, 95, 97, 98, 99, 100, 101, 106, 107, 108, 109, 113, 114, 115, 117, 119, 137, 149, 150, 153, 155, 156, 158, 159, 160, 161, 162, 163, 164, 166, 167, 170, 171, 172, 173, 188, 189, 190, 192, 193, 194, 196, 198, 199, 200, 207, 209, 210, 212, 213, 214, 222, 228, 229, 237, 238, 242, 243, 244, 245, 247, 248, 250, 251, 252, 256, 257, 259, 260, 268, 274, 275, and 293; CI Direct Violet 47, 52, 54, 59, 60, 65, 66, 79, 80, 81, 82, 84, 89, 90, 93, 95, 96 , 103 and 104; CI direct green 25, 27, 31, 32, 34, 37, 63, 65, 66, 67, 68, 69, 72, 77, 79 and 82 dyes.

Further, as the CI mord dye, CI mordant yellow 5, 8, 10, 16, 20, 26, 30, 31, 33, 42, 43, 45, 56, 61, 62, and 65; CI mordant red 1, 2,3,4,9,11,12,14,17,18,19,22,23,24,25,26,30,32,33,36,37,38,39,41,43,45, 46, 48, 53, 56, 63, 71, 74, 85, 86, 88, 90, 94 and 95; CI mordant orange 3, 4, 5, 8, 12, 13, 14, 20, 21, 23, 24, 28, 29, 32, 34, 35, 36, 37, 42 , 43, 47 and 48; CI mordant blue 1, 2, 3, 7, 8, 9, 12, 13, 15, 16, 19, 20, 21, 22, 23, 24, 26, 30, 31, 32, 39, 40, 41, 43, 44, 48, 49, 53, 61, 74, 77, 83 and 84; CI mordant purple 1, 2, 4, 5, 7, 14, 22, 24, 30, 31, 32 , 37, 40, 41, 44, 45, 47, 48, 53 and 58; CI mord green 1, 3, 4, 5, 10, 15, 19, 26, 29, 33, 34, 35, 41, 43 and 53 and other dyes.

Alkali soluble resin (B)

The above alkali-soluble resin (B) must be dissolved in the solvent of the present invention and is reactive toward light or heat. In addition, as long as it is an acrylic copolymer which functions as a binder resin in the coloring agent and is soluble in an alkaline developing solution, the type thereof can be used without particular limitation.

The above alkali-soluble resin may be a copolymer of a carboxyl group-containing monomer and another monomer copolymerizable with the above monomer. The carboxyl group-containing monomer may be, for example, an unsaturated carboxylic acid such as an unsaturated polycarboxylic acid having one or more carboxyl groups in the molecule such as an unsaturated monocarboxylic acid, an unsaturated dicarboxylic acid or an unsaturated tricarboxylic acid. The unsaturated monocarboxylic acid may be, for example, acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, cinnamic acid or the like. The above unsaturated dicarboxylic acid may be, for example, maleic acid, fumaric acid, itaconic acid, citraconic acid, and mesaconic acid. The above unsaturated polycarboxylic acid may be an acid anhydride, specifically, It may be maleic anhydride, itaconic anhydride, and citraconic anhydride. Further, the above unsaturated polycarboxylic acid may be mono(2-methylpropenyloxyalkyl)ester, and may be, for example, succinic acid mono(2-propenyloxyethyl) ester or succinic acid mono(2-a). Acryloxyethyl)ester, mono(2-propenyloxyethyl) phthalate, mono(2-methylpropenyloxyethyl) phthalate, and the like. Further, the above unsaturated polycarboxylic acid may be a mono(meth)acrylate of a dicarboxyl polymer at both ends, and may be, for example, an ω-carboxypolycaprolactone monoacrylate and an ω-carboxypolycaprolactone monomethyl group. Acrylate and the like. Each of the above-mentioned carboxyl group-containing monomers may be used alone or in combination of two or more. Specific examples of the other monomer copolymerizable with the above carboxyl group-containing monomer may be styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, or Chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, p- An aromatic vinyl compound such as vinylbenzyl methyl ether, o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p-vinylbenzyl glycidyl ether, and anthracene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, n-butyl acrylate, A N-butyl acrylate, isobutyl acrylate, isobutyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, 2-hydroxyethyl acrylate, A 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, methacrylic acid 2-hydroxypropyl ester, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-methacrylic acid 2- Hydroxybutyl ester, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate, benzyl acrylate Ester, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxy diglycol acrylate, methoxy diglycol methacrylate, methoxy triethylene glycol acrylate, A Oxylated triethylene glycol methacrylate, methoxypropylene glycol acrylate, methoxypropylene glycol methacrylate, methoxydipropylene glycol acrylate, methoxydipropylene glycol methacrylate, isobornyl acrylate, A Isobornyl acrylate, dicyclopentadienyl acrylate, dicyclopentadienyl methacrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, Unsaturated glycerin monoacrylate and glycerol monomethacrylate Acid esters; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, A 2-Aminopropyl acrylate, 2-dimethylaminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-2-3 acrylic acid Aminoalkyl esters of unsaturated carboxylic acids such as methylaminopropyl acrylate and 3-dimethylaminopropyl methacrylate; glycidyl esters of unsaturated carboxylic acid such as glycidyl acrylate and glycidyl methacrylate; Vinyl carboxylates such as vinyl ester, vinyl propionate, vinyl butyrate and vinyl benzoate; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether and allyl glycidyl ether; Nitrile, methacrylonitrile, α-chloroacrylonitrile And vinyl cyanide compounds such as di-cyanoethylene; acrylamide, methacrylamide, α-chloropropenylamine, N-2-hydroxyethyl decylamine and N-2-hydroxyethylmethacryl Unsaturated guanamines such as guanamine; unsaturated quinones such as maleic imine, N-phenyl maleimide and N-cyclohexylmaleimine; 1,3-butadiene, Aliphatic conjugated dienes such as isoprene and chloroprene; in polystyrene, polymethyl acrylate, polymethyl methacrylate, polybutyl acrylate, polybutyl methacrylate, poly The terminal of the polymer molecular chain of the decane has a monomethicone or a monomethacryl oxime-based macromonomer or the like. These monomers may be used alone or in combination of two or more.

Therefore, the above alkali-soluble resin may, for example, be (meth)acrylic acid/methyl (meth)acrylate copolymer, (meth)acrylic acid/benzyl (meth)acrylate copolymer, (meth)acrylic acid/( 2-hydroxyethyl methacrylate / benzyl (meth) acrylate copolymer, (meth) acrylate / methyl (meth) acrylate / polystyrene giant monomer copolymer, (meth) acrylic acid / ( Methyl)methyl acrylate/poly(methyl) acrylate macromonomer copolymer, (meth)acrylic acid/benzyl methacrylate/polystyrene macromonomer copolymer, (meth)acrylic acid/ Benzyl (meth)acrylate/poly(meth)acrylate macromonomer copolymer, (meth)acrylic acid/2-hydroxyethyl (meth)acrylate/benzyl (meth)acrylate/polystyrene Large monomer copolymer, (meth)acrylic acid / 2-hydroxyethyl (meth) acrylate / benzyl (meth) acrylate / poly (methyl) acrylate macromonomer copolymer, (meth) acrylic acid /styrene/benzyl (meth)acrylate/N-phenylmaleimide copolymer, (meth)acrylic acid/succinic acid mono(2-propenyloxy)ester/styrene/(methyl) Benzyl acrylate Ester/N-phenylmaleimide copolymer, (meth)acrylic acid/succinic acid mono(2-propenyloxyethyl)ester/styrene/allyl (meth)acrylate/N-benzene A methionimide copolymer and a (meth)acrylic acid/benzyl (meth)acrylate/N-phenylmaleimide/styrene/glycerol mono(meth)acrylate copolymer. The above (meth) acrylate means acrylate or methacrylate.

Among the above alkali-soluble resins, (meth)acrylic acid/benzyl (meth)acrylate copolymer, (meth)acrylic acid/benzyl (meth)acrylate/styrene copolymer, (meth)acrylic acid/( Methyl)methyl acrylate copolymer and (meth)acrylic acid/methyl (meth) acrylate/styrene copolymer.

Further, the alkali-soluble resin used in the gel permeation chromatography (GPC) using tetrahydrofuran as the elution solvent has a polystyrene-equivalent weight average molecular weight of 5,000 to 50,000, preferably 8,000 to 40,000, more preferably 10,000 to 30,000. When the weight average molecular weight of the above-mentioned alkali-soluble resin is in the range of 5,000 to 50,000, the coating film hardness is improved, and an excellent residual film ratio is exhibited, and good solubility to the developer in the unexposed portion and improved resolution can be exhibited. Further, the acid value is 50 to 150 (mgKOH/g), preferably 60 to 140, and more preferably 80 to 130. In the range of the acid value, the solubility of the alkali-soluble resin in the developer is improved, the unexposed portion is easily dissolved and the sensitivity is high, and the pattern of the exposed portion remains during development, and the residual film ratio can be improved.

5 to 80% by weight of the above alkali-soluble resin is contained with respect to the total weight of the solid content in the gray photosensitive resin composition, preferably Ground, it can be 10~60% by weight. When the above range is satisfied, there is a possibility that the problem of a decrease in the residual film ratio and a decrease in reliability is reduced, and pattern formation is easy.

Photopolymerizable compound (C)

The photopolymerizable compound is a polymerizable compound such as an active radical or an acid generated from a photopolymerization initiator by irradiation of light, and may be a monofunctional or polyfunctional polymerizable compound depending on the number of functional groups. The above-mentioned monofunctional polymerizable compound may be mercaptophenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate And N-vinylpyrrolidone and the like. The bifunctional polymerizable compound may be 1,6-hexanediol di(meth)acrylate, ethylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, or triglyceride. Alcohol di(meth)acrylate, bis(acryloxyethyl)ether of bisphenol A, 3-methylpentanediol di(meth)acrylate, butanediol dimethacrylate, hexane Alcohol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, polyethylene glycol di(methyl) Acrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, ethoxylated neopentyl glycol diacrylate, and propoxylated neopentyl glycol diacrylate. The trifunctional polymerizable compound may be trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, ethoxylated trimethylolpropane tri(meth)acrylate, or C. Oxylated trimethylolpropane tri(meth)acrylate, propoxylated triglyceride, isocyanurate triacrylate, and the like. 4-functional polymerization The compound may be pentaerythritol tetra(meth)acrylate, dimethylolpropane tetra(meth)acrylate or the like. Further, the pentafunctional polymerizable compound may be dipentaerythritol penta(meth)acrylate, and the pentafunctional photopolymerizable compound may be dipentaerythritol hexa(meth)acrylate. Among these, as the photopolymerizable compound, a bifunctional or higher polyfunctional polymerizable compound can be preferably used, and in particular, a bifunctional or higher polyfunctional polymerizable compound can be preferably used.

In addition, it is preferable to contain 5 to 50% by weight of the photopolymerizable compound, and more preferably 7 to 45% by weight, based on the total weight of the solid content in the gray photosensitive resin composition. When the photopolymerizable compound is contained in this range, the strength and smoothness of the pixel portion can be improved.

Photopolymerization initiator (D)

The photopolymerization initiator in the present invention is a compound which generates radicals capable of initiating polymerization of a polyfunctional monomer of the photopolymerizable compound by exposure to radiation such as visible light, ultraviolet light, far ultraviolet light, electron beam or X-ray. Typical examples of such a photopolymerization initiator include an acetophenone-based compound, a benzophenone-based compound, a biimidazole-based compound, a triazine-based compound, an oxime ester-based compound, and a thioxanthone-based compound. In the present invention, the photopolymerization initiator may be used singly or in combination of two or more kinds, and it is preferred to use one or more oxime ester compounds.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, and benzoin dimethyl ketal. 2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2- Methylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one, 2-benzyl- 2-Dimethylamino-1-(4-morpholinophenyl)butan-1-one, 2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl] Propane-1-one, 2-(4-methylbenzyl)-2-(dimethylamino)-1-(4-morpholinophenyl)butan-1-one, and the like.

Examples of the benzophenone-based compound include benzophenone, methyl 0-benzhydrylbenzoate, 4-phenylbenzophenone, and 4-benzylidene-4'-methyldiphenyl. A thioether, 3,3',4,4'-tetrakis(tert-butylperoxycarbonyl)benzophenone, 2,4,6-trimethylbenzophenone or the like.

Specific examples of the biimidazole compound include 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, and 2,2'-bis (2). ,3-dichlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-four (alkoxyphenyl)biimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetrakis(trialkoxyphenyl)biimidazole, 2,2- Bis(2,6-dichlorophenyl)-4,4',5,5'-tetraphenyl-1,2'-biimidazole, or phenyl group at the 4,4',5,5' position An oxycarbonyl-substituted imidazole compound or the like. Among these, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2,3-dichlorophenyl) is preferably used. -4,4',5,5'-tetraphenylbiimidazole, 2,2-bis(2,6-dichlorophenyl)-4,4',5,5'-tetraphenyl-1, 2'-biimidazole.

Specific examples of the triazine-based compound include 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine and 2,4-. Bis(trichloromethyl)-6-(4-methoxynaphthyl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-piperidin-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)vinyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(furan- 2-yl)vinyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(4-diethylamino-2-methylphenyl)ethene 1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(3,4-dimethoxyphenyl)vinyl]-1,3,5 - Triazine and the like.

As the above oxime ester-based compound, there are 1,2-octanedione, 1-[4-(phenylthio)phenyl]-, 2-(O-benzhydrylhydrazine), 1-[9-ethyl -6-(2-Methylbenzylidene)-9H-oxazol-3-yl]ethanone 1-(O-ethylindenyl) and the like.

As the above thioxanthone-based compound, for example, 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythiophene Tons of ketone and so on.

In addition, the photopolymerization initiator (D) may further contain a photopolymerization initiation aid (d1) in order to improve the sensitivity of the gray photosensitive resin composition of the present invention. When the gray photosensitive resin composition of the present invention contains a photopolymerization initiation aid (d1), the sensitivity is further improved, and productivity can be improved.

As the photopolymerization initiation aid (d1), for example, one or more compounds selected from the group consisting of an amine compound, a carboxylic acid compound, and an organic sulfur compound having a thiol group can be preferably used.

As the amine compound, an aromatic amine compound is preferably used. Specifically, an aliphatic amine compound such as triethanolamine, methyldiethanolamine or triisopropanolamine, methyl 4-dimethylaminobenzoate or 4-di can be used. Ethyl methylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 4-di 2-ethylhexyl methylaminobenzoate, 2-dimethylaminoethyl benzoate, N,N-dimethyl-p-toluidine, 4,4'-bis(dimethylamino)benzophenone (Generally known as: Michler's ketone), 4,4'-bis(diethylamino)benzophenone, and the like.

The carboxylic acid compound is preferably an aromatic heteroacetic acid, and specific examples thereof include phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, and methylethylphenylthioacetic acid. Dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthioacetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, benzene Oxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, naphthyloxyacetic acid, and the like.

Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis(3-mercaptobutyloxy)butane, and 1,3,5-tris(3). - mercaptobutoxyethyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, trimethylolpropane tris(3-mercaptopropionate), pentaerythritol Tetrakis(3-mercaptobutyrate), pentaerythritol tetrakis(3-mercaptopropionate), dipentaerythritol hexa(3-mercaptopropionate), tetraethylene glycol bis(3-mercaptopropionate), and the like.

The photopolymerization initiator may be contained in an amount of 0.1 to 40% by weight based on the total weight of the solid content of the gray photosensitive resin composition of the present invention, based on the content of the alkali-soluble resin (B) and the photopolymerizable compound (C). D) preferably contains 1 to 30% by weight of the above photopolymerization initiator (D). In other words, the photopolymerization initiator may be contained in an amount of 0.1 to 40 parts by weight based on 100 parts by weight of the total solid content of the alkali-soluble resin and the photopolymerizable compound. When the photopolymerization initiator (D) is in the range of 0.1 to 40% by weight, the gray photosensitive resin composition is highly sensitive. Since the exposure time is shortened, the productivity is improved, and high resolution can be maintained, which is preferable. Further, the strength of the pixel portion formed using the composition of the above-described conditions and the smoothness of the surface of the pixel portion can be improved.

Further, in the case of the photopolymerization initiation aid (d1), the photopolymerization initiator may be contained in an amount of 10 to 100% by weight, preferably 20 to 100% by weight. When the content of the photopolymerization initiation aid (d1) in the total photopolymerization initiator satisfies the above range, the decrease in sensitivity to the dye can be reduced, and the possibility of occurrence of a short circuit of the pattern in the development step can be reduced.

In addition, when the photopolymerization initiation aid (d1) is used, the alkali-soluble resin (B) and the photopolymerizable compound (C) are based on the total weight of the solid content of the gray photosensitive resin composition of the present invention. The content may be 0.1 to 40% by weight of the photopolymerization initiation aid (d1), and preferably 1 to 30% by weight of the photopolymerization initiation aid (d1). When the amount of use of the photopolymerization initiation aid (d1) is in the range of 0.1 to 40% by weight, the effect of the gray photosensitive resin composition is further improved, and the color filter formed using the above composition is provided. Increased productivity.

Solvent (E)

The solvent is not particularly limited as long as it dissolves the gray photosensitive resin composition, and is particularly preferably an ether, an aromatic hydrocarbon, a ketone, an alcohol, an ester or a guanamine. Specific examples thereof include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, and diethylene glycol II. Ethyl ether, diethylene glycol dipropyl Ethyl ether, diethylene glycol dibutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol dimethyl ether, dipropylene glycol diethyl ether, two Ethers such as propylene glycol dipropyl ether and dipropylene glycol dibutyl ether; aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene; methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone And ketones such as cyclohexanone; alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerol; ethyl 3-ethoxypropionate, methyl 3-methoxypropionate , methyl cellosolve acetate, ethyl cellosolve acetate, ethyl acetate, butyl acetate, amyl acetate, methyl lactate, ethyl lactate, butyl lactate, 3-methoxybutyl acetate Ester, 3-methyl-3-methoxy-1-butyl acetate, methoxypentyl acetate, ethylene glycol monoacetate, ethylene glycol diacetate, ethylene glycol monomethyl ether Acid ester, ethylene glycol monoethyl ether acetate, diethylene glycol monoacetate, diethylene glycol diacetate, diethylene glycol monobutyl ether acetate, propylene glycol monoacetate, propylene glycol diethyl Acid ester, C Glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethylene carbonate, propylene carbonate and γ- butyrolactone and the like. The solvent can be used alone or in combination of two or more kinds selected from the solvents exemplified above. Further, in terms of coatability and drying property, the boiling point must be 100 to 200 ° C, preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl lactate, butyl lactate, 3 Ethyl ethoxypropionate and methyl 3-methoxypropionate.

The solvent may be contained in an amount of 25 to 80% by weight, preferably 30 to 70% by weight, based on the total weight of the gray photosensitive resin composition. Within the above range, when coated by a roll coater, a spin coater, a slit and a spin coater, a slit coater (or a die coater), and a coating device such as an inkjet, Can show good coatability.

Additive (F)

The gray photosensitive resin composition of the present invention may contain a filler, another polymer compound, a curing agent, and adhesion promotion in accordance with the needs of those skilled in the art, in addition to the above-described components, within a range not inhibiting the object of the present invention. Additives (F) such as a solvent, an ultraviolet absorber, and an anti-agglomerating agent are used in combination.

Specifically, glass, cerium oxide, aluminum oxide, or the like can be used as the above-mentioned filler, but it is not limited thereto.

Specifically, as the other polymer compound, a curable resin such as an epoxy resin or a maleimide resin, polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether or polyfluoroalkyl acrylate can be used. A thermoplastic resin such as polyester or polyurethane is not limited thereto.

The curing agent is used to improve deep curing and mechanical strength. Specifically, an epoxy compound, a polyfunctional isocyanate compound, a melamine compound, an oxetane compound, or the like can be used, but is not limited thereto. Specific examples of the epoxy compound include a bisphenol A epoxy resin, a hydrogenated bisphenol A epoxy resin, a bisphenol F epoxy resin, a hydrogenated bisphenol F epoxy resin, and a novolak epoxy resin. Other aromatic epoxy resins, alicyclic epoxy resins, glycidyl ester resins, glycidylamine resins, or brominated derivatives of such epoxy resins, epoxy resins, and brominated derivatives thereof Aliphatic, alicyclic or aromatic epoxy compounds, butadiene (co)polymer epoxides, isoprene (co)polymer epoxides, glycidyl (meth)acrylates )polymer, It is not limited to these, such as triglycidyl isocyanurate. The above oxetane compound, specifically, carbonate dioxetane, xylene dioxetane, adipate dioxetane, terephthalate dioxygen can be used. Although it is a heterocyclic butane, a cyclohexane dicarboxylic acid dioxetane, etc., it is not limited to these.

In the above curing agent, a curing auxiliary compound capable of ring-opening polymerization of an epoxy group of an epoxy compound or an oxetane skeleton of an oxetane compound may be used together with a curing agent. Specific examples of the curing auxiliary compound include polyvalent carboxylic acids, polycarboxylic acid anhydrides, acid generators, and the like. As the carboxylic anhydride, a commercially available product as an epoxy resin curing agent can be used. For example, the product name (Adeka Hardener EH-700) (manufactured by Adeka Industrial Co., Ltd.), the trade name (Rikacid HH) (manufactured by Shin-Nippon Chemical Co., Ltd.), and the product are commercially available. Name (MH-700) (manufactured by Shin-Nippon Chemical and Chemical Co., Ltd.).

The curing agent and the curing auxiliary compound exemplified above may be used alone or in combination of two or more.

The above adhesion promoter, specifically, can be selected from the group consisting of vinyl trimethoxy decane, vinyl triethoxy decane, vinyl tris(2-methoxyethoxy) decane, and N-(2-amino ethane 3-aminopropylmethyldimethoxydecane, N-(2-aminoethyl)-3-aminopropyltrimethoxydecane, 3-aminopropyltriethoxydecane, 3-shrink Glycidoxypropyltrimethoxydecane, 3-glycidoxypropylmethyldimethoxydecane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxydecane, 3-chloropropyl Methyldimethoxydecane, 3-chloropropyltrimethoxydecane, 3-methylpropenyloxy A single or a mixture of propyltrimethoxydecane, 3-mercaptopropyltrimethoxydecane, 3-isocyanatepropyltrimethoxydecane, and 3-isocyanatepropyltriethoxydecane.

The adhesion promoter may be contained in an amount of 0.01 to 10 parts by weight based on the solid content of the composition, and preferably 0.05 to 2 parts by weight of the above adhesion promoter.

Specific examples of the ultraviolet absorber include 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole and alkoxybenzophenone, but Not limited to these.

Specifically, the above-mentioned anti-agglomerating agent can be, for example, sodium polyacrylate, but is not limited thereto.

The present invention provides a color filter manufactured using the above gray photosensitive resin composition. The gray photosensitive resin composition can be applied onto a substrate, photocured and developed to form a pattern.

First, the gray photosensitive resin composition is applied onto a substrate or a layer composed of a solid component of the photosensitive resin composition, and then dried by heating to remove a volatile component such as a solvent to obtain a smooth coating film.

The coating method is carried out by spin coating, cast coating, roll coating, slit and spin coating, or slit coating. After coating, it is heated and dried (prebaked), or dried under reduced pressure, and heated to volatilize volatile components such as a solvent. The heating temperature is 70 to 200 ° C, preferably 80 to 130 ° C. The thickness of the coating film after heating and drying is about 1 to 8 μm. In order to form a target pattern on the above coating film, ultraviolet rays are irradiated through a mask. At this time, in order to uniformly irradiate the entire exposed portion with the parallel rays, the mask can be performed. For proper alignment with the substrate, a device such as a mask aligner, stepper or the like is preferably used. When ultraviolet rays are irradiated, curing of a portion irradiated with ultraviolet rays is performed. As the ultraviolet rays, a g line (wavelength: 436 nm), an h line, and an i line (wavelength: 365 nm) can be used. The amount of ultraviolet rays to be irradiated can be appropriately selected as needed, and is not limited in the present invention. When the coating film which has finished curing is brought into contact with the developing solution, and the non-exposed portion is dissolved and developed, a cured product having a desired pattern shape can be obtained.

Further, the present invention provides a display element comprising the above color filter.

In the following, in order to understand the present invention, preferred embodiments, comparative examples and experimental examples are given, but such examples, comparative examples and experimental examples are merely illustrative of the invention and should not be construed as limiting the scope of the appended claims. It will be apparent to those skilled in the art that various changes and modifications can be made to the embodiments, the comparative examples and the experimental examples within the scope of the invention, and such modifications and modifications are of course also included in the attached application. Patent scope.

<Manufacture of Pigment Dispersion Composition>

Production Example 1. Pigment Dispersion Composition M1

12.0 parts by weight of CI Pigment Red 254 as a pigment, 5.0 parts by weight of DISPER BYK-2001 (manufactured by BYK Co., Ltd.) as a pigment dispersant, and 13.0 parts by weight of 4-hydroxy-4-methyl-2-pentanone as a solvent. 70.0 parts by weight of propylene glycol methyl ether acetate was mixed/dispersed by a bead mill for 12 hours to prepare a pigment dispersion composition M1.

Production Example 2. Pigment Dispersion Composition M2

12.0 parts by weight of CI Pigment Red 177 as a pigment, 5.0 parts by weight of DISPER BYK-2001 (manufactured by BYK Co., Ltd.) as a pigment dispersant, and 13.0 parts by weight of 4-hydroxy-4-methyl-2-pentanone as a solvent. 70.0 parts by weight of propylene glycol methyl ether acetate was mixed/dispersed by a bead mill for 12 hours to prepare a pigment dispersion composition M2.

Production Example 3. Pigment Dispersion Composition M3

12.0 parts by weight of CI Pigment Green 36 as a pigment, 5.0 parts by weight of DISPER BYK-2001 (manufactured by BYK Co., Ltd.) as a pigment dispersant, and 13.0 parts by weight of 4-hydroxy-4-methyl-2-pentanone as a solvent. 70.0 parts by weight of propylene glycol methyl ether acetate was mixed/dispersed by a bead mill for 12 hours to prepare a pigment dispersion composition M3.

Production Example 4. Pigment Dispersion Composition M4

12.0 parts by weight of CI Pigment Yellow 138 as a pigment, 5.0 parts by weight of DISPER BYK-2001 (manufactured by BYK Co., Ltd.) as a pigment dispersant, and 13.0 parts by weight of 4-hydroxy-4-methyl-2-pentanone as a solvent. 70.0 parts by weight of propylene glycol methyl ether acetate was mixed/dispersed by a bead mill for 12 hours to prepare a pigment dispersion composition M4.

Production Example 5. Pigment Dispersion Composition M5

1 part by weight of CI Pigment Blue 15:6 as a pigment, 4.0 parts by weight of DISPER BYK-2001 (manufactured by BYK Co., Ltd.) as a pigment dispersant, 44 parts by weight of propylene glycol methyl ether acetate as a solvent, and propylene glycol methyl ether 40 parts by weight of the pigment dispersion composition M5 was produced by mixing/dispersing for 12 hours using a bead mill.

Production Example 6. Pigment Dispersion Composition M6

6.4 parts by weight of CI Pigment Blue 15:6 as a pigment, 3.6 parts by weight of CI Pigment Violet 23, and 4.0 parts by weight of DISPER BYK-2001 (manufactured by BYK Corporation) as a pigment dispersant, propylene glycol methyl ether acetate as a solvent 44 parts by weight and 40 parts by weight of propylene glycol methyl ether were mixed/dispersed by a bead mill for 12 hours to prepare a pigment dispersion composition M6.

Production Example 7. Pigment Dispersion Composition M7

20.0 parts by weight of carbon black, 6 parts by weight of AJISPUR PB821 (Ajinomoto Fine-Techno Co., Inc.) as a dispersing agent, and 74 parts by weight of propylene glycol monomethyl ether acetate as a solvent were mixed/dispersed by a bead mill 12 The pigment dispersion composition M7 was produced in an hour.

Synthesis Example 1. Synthesis of alkali-soluble resin

In a flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel, and a nitrogen introduction tube, 120 parts by weight of propylene glycol monomethyl ether acetate, 80 parts by weight of propylene glycol monomethyl ether, 2 parts by weight of AIBN, and acrylic acid were placed. 13.0 parts by weight, 10 parts by weight of benzyl methacrylate, 57.0 parts by weight of styrene, 20 parts by weight of methyl methacrylate and 3 parts by weight of n-dodecylmercaptan were replaced with nitrogen. Then, the temperature of the reaction liquid was raised to 110 ° C with stirring, and the reaction was carried out for 6 hours. The alkali-soluble resin thus synthesized had a solid content acid value of 100.2 mgKOH/g, and a weight average molecular weight Mw measured by GPC was about 15,110.

Examples 1 to 8 and Comparative Examples 1 to 3. Production of Gray Photosensitive Resin Composition

A gray photosensitive resin composition was produced by the composition and content (unit: weight%) described in Table 1 below. (Comparative Example 3 is a colorant) Based on the total weight of the solid component, the black pigment was 25% by weight).

(A) Pigment Dispersion Composition:

(A1) Synthesis Example 1 (Pigment Dispersion Composition M1, C.I. Pigment Red 254)

(A2) Synthesis Example 2 (Pigment Dispersion Composition M2, C.I. Pigment Red 177)

(A3) Synthesis Example 3 (Pigment Dispersion Composition M3, C.I. Pigment Green 36)

(A4) Synthesis Example 4 (Pigment Dispersion Composition M4, C.I. Pigment Yellow 138)

(A5) Synthesis Example 5 (Pigment Dispersion Composition M5, C.I. Pigment Blue B15: 6)

(A6) Synthesis Example 6 (Pigment Dispersion Composition M6, C.I. Pigment Blue B15: 6/C.I. Pigment Violet 23=7/3)

(A7) Synthesis Example 7 (Pigment Dispersion Composition M7, Carbon Black)

(B) alkali-soluble resin: (alkali-soluble resin of Synthesis Example 1)

(C) Photopolymerizable compound: dipentaerythritol hexaacrylate (KAYARD DPHA; manufactured by Nippon Kayaku Co., Ltd.)

(D) Photopolymerization initiator:

(D-1) 2-O-benzylidene fluoren-1-(4-(phenylthio)phenyl]-1,2-octanedione (OXE-01; manufactured by BASF)

(D-2) 2-methyl-2-morpholino-1-(4-methylthiophenyl)propan-1-one (Irgacure 907 (manufactured by Ciba Specialty Chemical Co., Ltd.)

(E) Solvent (propylene glycol monomethyl ether acetate)

Experimental Example 1. Manufacture of color filters

A color filter was produced using the gray photosensitive resin compositions produced in the above Examples 1 to 8 and Comparative Examples 1 to 3.

Specifically, each of the above-mentioned gray photosensitive resin compositions was applied onto a 2 inch square glass substrate (manufactured by Corning Incorporated, "EAGLE XG") by a spin coating method, and then placed on a hot plate and maintained at a temperature of 100 ° C. After 3 minutes, a film was formed. Next, a test photomask having a pattern in which the transmittance was changed stepwise in the range of 1 to 100% and an exposure portion pattern of 3×3 cm was placed on the film, and the interval from the test photomask was 100 μm, and the irradiation was performed. Ultraviolet light. At this time, the ultraviolet light source was irradiated with an illuminance of 100 mJ/cm ² using a 1 KW high-pressure mercury lamp containing all the g, h, and i lines, and no special optical filter was used. The film irradiated with the above ultraviolet rays was immersed in a developing solution of KOH aqueous solution having a pH of 10.5 for 2 minutes to carry out development. The glass plate coated with the above film was washed with distilled water, and then nitrogen gas was sprayed, dried, and heated in a heating oven at 200 ° C for 25 minutes to produce a color filter. The thickness of the film was measured using a film thickness measuring device (DEKTAK6M; manufactured by Veeco Co., Ltd.), and the thickness of the film measured was 2.5 μm.

Experimental example 2. Characteristic evaluation

2.1 Spectrophotometry

In the case of the spectroscopic method, a color filter was produced in the same manner as in the above-described Experimental Example 1 except that the test photomask was not used, and the transmittance was measured using a colorimeter (Olympus, OSP-200). The results are shown in Table 2 below. In addition, the spectral transmittance in the visible light region in the range of 380 nm to 780 nm was measured using a colorimeter (manufactured by Olympus Corporation, OSP-200), and the results are shown in Table 4 and Table 5, FIG. 1 and FIG.

2.2 Determination of reflectivity

A color filter was produced in the same manner as in the above-described Experimental Example 1 except that the test photomask was not used, and an integrated sphere reflectance measuring device (Konica Minolta, Spectrophotometer CM-3700d) was used to measure the 2 degree positive on the coated surface. The reflectance is shown in Table 2 below.

Table 3 shows the evaluation criteria.

As shown in Table 2, it was confirmed that Examples 1 to 8 were superior in external light reflection effect to Comparative Examples 1 to 3.

Table 4 and Fig. 1 show the transmittance based on the wavelength based on the above experimental results.

Fig. 1 is a graph showing the spectral transmittance in a visible light region in the range of 380 to 780 nm when the gray photosensitive resin composition is formed into a cured film having a thickness of 2.5 μm. Table 4 shows the transmittance of a part of the wavelength in the visible light region in the range of 460 nm to 730 nm when the gray photosensitive resin composition was formed into a cured film having a thickness of 2.5 μm.

As shown in Figure 1, comparing without black pigment In Examples 1 and 2, when the gray photosensitive resin composition was formed into a cured film having a thickness of 2.5 μm, a transmittance of less than 30% or more at a wavelength of 460 nm to 530 nm was exhibited, and a wavelength of 580 nm to 620 nm was obtained. The transmittance is less than 20% or more, and in the embodiment containing the black pigment, the transmittance is 30% or more and less than 75% at a wavelength of 460 nm to 530 nm, and the wavelength is 580 nm to 620 nm. The transmittance was 20% or more and less than 75%, and the transmittance was 20% or more at a wavelength of 690 nm to 780 nm. In Comparative Examples 1 and 2, the external light reflection effect was insufficient.

On the other hand, in Comparative Example 3 in which the black pigment was less than 0.5% by weight and more than 10% by weight based on the solid content of the colorant, it was shown to be insufficient in preventing external light reflection effect and visibility.

Fig. 1 shows the wavelength-based transmittance as a result of Experimental Example 2. In particular, FIG. 1 is a graph showing the spectral transmittance in the visible light region in the range of 380 to 780 nm as a result of Experimental Example 2.

Claims (13)

A gray photosensitive resin composition comprising a pigment dispersion composition, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent, the pigment dispersion composition comprising a pigment selected from red pigments, green One or more of a pigment, a cyan pigment, a yellow pigment, and a violet pigment, and a black pigment, wherein the gray photosensitive resin composition is formed into a cured film having a thickness of 2.5 μm, and a transmittance at a spectral wavelength of 460 nm to 530 nm 30% or more and less than 75%, the transmittance at a spectral wavelength of 580 nm to 620 nm is 20% or more and less than 75%, and the transmittance at a spectral wavelength of 690 nm to 780 nm is 20% or more, wherein the solid content of the color material is The black pigment is 0.5 to 10% by weight based on the total weight. The gray photosensitive resin composition of claim 1, wherein a weight ratio of one or more selected from the group consisting of a red pigment, a green pigment, a cyan pigment, a yellow pigment, and a violet pigment to a black pigment is 99.5 to 90:10 to 0.5. The gray photosensitive resin composition of claim 1, which comprises 1 to 70% by weight of the pigment dispersion composition, 5 to 80% by weight of the alkali-soluble resin, and light, based on the total weight of the solid content of the gray photosensitive resin composition. 5 to 50% by weight of the polymerizable compound, the photopolymerization initiator is contained in an amount of 0.1 to 40% by weight based on the total content of the solid content of the alkali-soluble resin and the photopolymerizable compound, and the solvent 25 is contained based on the gray photosensitive resin composition. 80% by weight. The gray photosensitive resin composition of claim 1, which The red pigment contains one or more selected from the group consisting of C.I. Pigment Red 179, C.I. Pigment Red 177, C.I. Pigment Red 209, C.I. Pigment Red 242, and C.I. Pigment Red 254. The gray photosensitive resin composition of claim 1, wherein the green pigment contains one or more selected from the group consisting of C.I. Pigment Green 36, C.I. Pigment Green 58, and C.I. Pigment Green 59. The gray photosensitive resin composition of claim 1, wherein the cyan pigment comprises a color selected from the group consisting of CI Pigment Blue 15:3, CI Pigment Blue 15:4, CI Pigment Blue 15:6, CI Pigment Blue 21, CI Pigment Blue 28. One or more of CI Pigment Blue 60, CI Pigment Blue 64, and CI Pigment Blue 76. The gray photosensitive resin composition of claim 1, wherein the yellow pigment contains one or more selected from the group consisting of C.I. Pigment Yellow 138, C.I. Pigment Yellow 150, and C.I. Pigment Yellow 185. The gray photosensitive resin composition of claim 1, wherein the purple pigment comprises a color selected from the group consisting of CI Pigment Violet 14, CI Pigment Violet 19, CI Pigment Violet 23, CI Pigment Violet 29, CI Pigment Violet 32, CI Pigment Violet 33 One or more of CI Pigment Violet 36, CI Pigment Violet 37, and CI Pigment Violet 38. The gray photosensitive resin composition of claim 1, wherein the black pigment comprises a pigment selected from a mixture of red, cyan, and green, CI Pigment Black 1, CI Pigment Black 7, carbon black, organic black, and titanium. One or more of the black ones. A color filter that is used as claimed in claims 1 to 9 It is produced by one gray photosensitive resin composition. A display element comprising a color filter as in claim 10. The display element of claim 11, wherein the display element is a flexible display element. The display element of claim 11, wherein the display element is an organic light emitting element.