KR101840595B1 - Colored Photosensitive Resin Composition for Red Pixel, Color Filter and Display Device - Google Patents

Abstract

The present invention relates to a colored photosensitive resin composition for a red pixel, and more specifically, provides: a colored photosensitive resin composition for a red pixel, which comprises: an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, a colorant and a solvent, wherein the alkali-soluble resin contains a tricyclodecanyl group-containing repeating unit, and the colorant contains a brominated diketopyrrolopyrrole compound; a color filter formed by using the composition; and an image display device comprising the color filter. The colored photosensitive resin composition for the red color pixel according to the present invention suppresses residue formation on a black matrix and has a smooth pattern slope.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colored photosensitive resin composition for a red color filter, a color filter,

The present invention relates to a colored photosensitive resin composition for a red color, a color filter, and an image display device, and more particularly, to a colored photosensitive resin composition for a red color element in which the occurrence of residue on a black matrix is suppressed and the slope of the pattern is gentle, A color filter to be formed, and an image display apparatus having the color filter.

BACKGROUND ART [0002] Color filters are widely used in imaging elements, liquid crystal displays (LCDs), and the like, and the application range thereof has been expanded. The color filter is usually prepared by uniformly applying a colored photosensitive resin composition containing a pigment corresponding to each color of red, green and blue on a substrate on which a black matrix is pattern-formed, exposing and developing a coating film formed by heating and drying, And repeating an operation of heating and curing as needed, for each color to form pixels of each color.

Korean Patent Laid-Open Publication No. 10-2012-0112188 discloses a colored photosensitive resin composition for a red color using a benzimidazolone pigment having a high luminance and a high contrast ratio as a color material of a red pixel.

However, in order to provide a high-quality color filter having a high color reproducibility, development of a colored photosensitive resin composition for a red color element in which the occurrence of residue on a black matrix is suppressed and the slope of the pattern is gentle is required.

Korean Patent Publication No. 10-2012-0112188

An object of the present invention is to provide a colored photosensitive resin composition for a red color element in which the occurrence of residue on a black matrix is suppressed and the slope of the pattern is gentle.

Another object of the present invention is to provide a color filter formed using the colored photosensitive resin composition for a red color.

It is still another object of the present invention to provide an image display apparatus provided with the color filter.

On the other hand, the present invention provides a colored photosensitive resin composition for a red coloring agent comprising an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, a colorant, and a solvent, wherein the alkali-soluble resin comprises a repeating unit represented by the following general formulas , And the colorant comprises a compound represented by the following general formula (4).

[Chemical Formula 1]

(2)

(3)

[Chemical Formula 4]

In this formula,

R ¹ , R ² , R ⁴ and R ⁶ are each independently hydrogen or methyl,

R ³ is a C ₁ -C ₂₀ alkyl group,

R < ⁵ > is a residue comprising a carboxylic acid derived by an acid anhydride,

n, m and q are each independently an integer of 1 to 500.

On the other hand, the present invention provides a color filter formed using the colored photosensitive resin composition for red color.

On the other hand, the present invention provides an image display device having the color filter.

The colored photosensitive resin composition for a red coloring matter according to the present invention is characterized in that the alkali-soluble resin contains a tricyclodecanyl group-containing repeating unit and the colorant contains a brominated diketopyrrolopyrrole compound, Generation is suppressed and the slope of the pattern is gentle, so that the step can be reduced.

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

One embodiment of the present invention is a photosensitive resin composition comprising an alkali soluble resin (A), a photopolymerizable compound (B), a photopolymerization initiator (C), a colorant (D) and a solvent (E), wherein the alkali soluble resin contains a tricyclodecanyl group Wherein the coloring agent comprises a brominated diketopyrrolopyrrole compound. The present invention also relates to a colored photosensitive resin composition for a red coloring matter.

The alkali-soluble resin (A)

In one embodiment of the present invention, the alkali-soluble resin (A) generally has reactivity and alkali solubility due to the action of light or heat, and acts as a dispersion medium of a coloring material.

The alkali-soluble resin (A) includes a repeating unit represented by the following general formulas (1) to (3).

[Chemical Formula 1]

(2)

(3)

In this formula,

R ¹ , R ² , R ⁴ and R ⁶ are each independently hydrogen or methyl,

R ³ is a C ₁ -C ₂₀ alkyl group,

R < ⁵ > is a residue comprising a carboxylic acid derived by an acid anhydride,

n, m and q are each independently an integer of 1 to 500.

As used herein, a C ₁ -C ₂₀ alkyl group means a linear or branched hydrocarbon group having 1 to 20 carbon atoms, and examples thereof include methyl, ethyl, n-propyl, i-propyl, -Butyl, t-butyl, pentyl, hexyl, 2-ethylhexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, , Eicosanyl, and the like, but are not limited thereto.

The acid anhydrides used in the present invention include succinic anhydride, methylsuccinic anhydride, (2-dodecen-1-yl) succinic anhydride, phenyl The present invention relates to a process for the preparation of an anhydride of the formula (I) wherein R is selected from the group consisting of a phenylsuccinic anhydride, a phthalic anhydride, a maleic anhydride, a citraconic anhydride, a glutaric anhydride, a 3,3-dimethylglutaric anhydride 3,3-dimethylglutaric anhydride, itaconic anhydride, 3,4,5,6-tetrahydrophthalic anhydride, trimellitic anhydride, But are not limited to, hexahydrophthalic anhydride, carbic anhydride, and the like.

The alkali-soluble resin (A) may be a block copolymer in which the repeating units represented by the general formulas (1) to (3) are repeatedly repeated, or random copolymers in which the repeating units are randomly repeated.

The alkali-soluble resin preferably contains 1 to 98 mol% of the repeating unit represented by the formula (1), 1 to 98 mol% of the repeating unit represented by the formula (2), and the repeating unit represented by the formula May contain 1 to 98% by mole of the repeating unit represented by the formula (3).

When the repeating units represented by the above formulas (1) to (3) are contained within the above-mentioned mol% ranges, an alkali-soluble resin having a good balance with developability, solubility and coloring agent can be obtained.

Further, the alkali-soluble resin may further include a repeating unit derived from a monomer containing an unsaturated double bond.

The type of monomer containing the unsaturated double bond is not particularly limited, and examples thereof include styrene, vinyltoluene,? -Methylstyrene, 4-methylstyrene, p-chlorostyrene, o-methoxystyrene, m- Methoxy styrene, o-vinyl benzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, and p Aromatic vinyl compounds such as vinylbenzyl glycidyl ether;

N-cyclohexylmaleimide, N-benzylmaleimide, N-phenylmaleimide, No-hydroxyphenylmaleimide, Nm-hydroxyphenylmaleimide, Np-hydroxyphenylmaleimide, No-methylphenylmaleimide, Nm N-substituted maleimide-based compounds such as methylphenyl maleimide, Np-methylphenyl maleimide, No-methoxyphenyl maleimide, Nm-methoxyphenyl maleimide and Np-methoxyphenyl maleimide; And

3- (methacryloyloxymethyl) -2-trifluoromethyl oxetane, 3- (methacryloyloxymethyl) oxetane, 3- (methacryloyloxymethyl) 2- (methacryloyloxymethyl) oxetane, 2- (methacryloyloxymethyl) -4-trifluoromethyloxetane, and the like Unsaturated oxetane-based compounds.

The unsaturated double bond-containing monomers may be used alone or in combination of two or more.

The content of the unsaturated double bond-containing monomer is not particularly limited, but is preferably 5 to 50 mol% based on 100 mol% of all the repeating units constituting the alkali-soluble resin.

The acid value of the alkali-soluble resin (A) is preferably 30 to 150 mgKOH / g. When the acid value of the alkali-soluble resin is within the above range, a sufficient developing rate of the colored photosensitive resin composition for a red color can be ensured and the adhesion of the substrate and the colored photosensitive resin composition for a red color is reduced, Can be prevented, compatibility with the coloring agent is excellent, and the phenomenon of precipitation of the coloring agent can be prevented. In addition, it is possible to prevent the storage stability of the colored photosensitive resin composition for a red color from deteriorating, and to prevent an increase in viscosity.

The weight average molecular weight (hereinafter simply referred to as "weight average molecular weight") of the polymer in terms of polystyrene measured by gel permeation chromatography (GPC; tetrahydrofuran as an elution solvent) is 3,000 to 100,000, preferably 5,000 to 50,000 Alkali-soluble resins are preferable. When the molecular weight is within the above range, the hardness of the coating film is improved, the residual film ratio is high, the solubility of the non-exposed portion in the developer is excellent, and the resolution tends to be improved.

The molecular weight distribution (weight average molecular weight (Mw) / number average molecular weight (Mn)) of the alkali-soluble resin (A) is preferably 1.5 to 6.0, more preferably 1.8 to 4.0. When the molecular weight distribution (weight-average molecular weight (Mw) / number-average molecular weight (Mn)) is 1.5 to 6.0, development is preferable.

The alkali-soluble resin (A) may be contained in an amount of 10 to 80% by weight, preferably 10 to 70% by weight, based on 100% by weight of the total solid content in the colored photosensitive resin composition for a red color. When the alkali-soluble resin (A) is contained in the above-mentioned range, the solubility in the developer is sufficient and the pattern formation is easy, and the reduction of the film thickness of the pixel portion of the exposed portion is prevented during development, have.

Photopolymerization  The compound (B)

In one embodiment of the present invention, the photopolymerizable compound (B) is a compound capable of polymerizing under the action of the photopolymerization initiator (C) described below, and a monofunctional monomer, a bifunctional monomer or a polyfunctional monomer can be used, A polyfunctional monomer having two or more functional groups can be used.

Specific examples of the monofunctional monomer include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate or N- But are not limited thereto.

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) , Bis (acryloyloxyethyl) ether of bisphenol A or 3-methylpentanediol di (meth) acrylate, but are not limited thereto.

Specific examples of the polyfunctional monomer include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate, pentaerythritol tri (Meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxylated dipentaerythritol hexa Acrylate or dipentaerythritol hexa (meth) acrylate, but are not limited thereto.

The photopolymerizable compound (B) may be contained in an amount of 1 to 45% by weight, especially 3 to 45% by weight based on 100% by weight of the total solid content in the red photosensitive resin composition for a red color. When the photopolymerizable compound (B) is included in the above range, the strength and smoothness of the pixel portion can be improved.

Light curing Initiator (C)

In one embodiment of the present invention, the photopolymerization initiator (C) can be used without any particular limitation as long as it can polymerize the photopolymerizable compound (B). In particular, the photopolymerization initiator (C) is preferably selected from the group consisting of an acetophenone-based compound, a benzophenone-based compound, a triazine-based compound, a nonimidazole-based compound, an oxime- It is preferable to use at least one compound selected from the group consisting of thioxanthone compounds.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 2-hydroxy- 1- [4- 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropane-1-one, 2-methylcyclohexyl phenyl ketone, 2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1-one 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one.

Examples of the benzophenone compound include benzophenone, methyl 0-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfide, 3,3 ', 4,4'-tetra tert-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, and the like.

Specific examples of the triazine compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6 - (4-methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6-piperonyl-1,3,5-triazine, (Trichloromethyl) -6- [2- (5-methylfuran-2- (4-methoxystyryl) -1,3,5-triazine, Yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (furan- , 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethenyl] -1,3,5-triazine, 2,4- ) -6- [2- (3,4-dimethoxyphenyl) ethenyl] -1,3,5-triazine.

Specific examples of the imidazole-based compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'- Dichlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (alkoxyphenyl) Bis (2,6-dichlorophenyl) -4, 5,5'-tetra (trialkoxyphenyl) bimidazole, 2,2- , 4 ', 5,5'-tetraphenyl-1,2'-biimidazole or an imidazole compound in which the phenyl group at the 4,4', 5,5 'position is substituted by a carboalkoxy group . Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3- , 2,2-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-biimidazole, Is used.

Specific examples of the oxime-based compound include o-ethoxycarbonyl-α-oximino-1-phenylpropan-1-one and the like. Commercially available products include OXE01 and OXE02 of BASF.

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

The photopolymerization initiator (C) may be used in combination with the photopolymerization initiator (c1) in order to improve the sensitivity of the colored photosensitive resin composition for redox of the present invention. The colored photosensitive resin composition for a red pixel according to one embodiment of the present invention contains a photopolymerization initiation auxiliary (c1), whereby the sensitivity can be further increased and the productivity can be improved.

As the photopolymerization initiation auxiliary (c1), for example, at least one compound 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.

Specific examples of the amine compound include aliphatic amine compounds such as triethanolamine, methyldiethanolamine and triisopropanolamine; aliphatic amines such as methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-ethylhexyl aminobenzoate, 2-dimethylaminoethyl benzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone (commonly known as Michler's ketone), 4,4'- Ethylamino) benzophenone, and it is particularly preferable to use an aromatic amine compound.

The carboxylic acid compound is preferably an aromatic heteroacetic acid, and more specifically, it is preferably an aromatic heteroaromatic acid such as phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthio Acetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, naphthoxyacetic acid and the like.

Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis (3-mercaptobutyryloxy) butane, 1,3,5-tris (3-mercaptobutyloxyethyl) Triazine-2,4,6 (1H, 3H, 5H) -thione, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexacis (3-mercaptopropionate), and tetraethylene glycol bis (3-mercaptopropionate). .

The photopolymerization initiator (C) may be contained in an amount of 0.1 to 40 parts by weight, preferably 1 to 30 parts by weight based on 100 parts by weight of the total amount of the alkali-soluble resin (A) and the photopolymerizable compound (B) based on the solid content. When the photopolymerization initiator (C) is included within the above range, the colored photosensitive resin composition for a red color filter is highly sensitized and the exposure time is shortened, which is preferable because productivity can be improved and high resolution can be maintained. 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.

When the photopolymerization initiation auxiliary (c1) is further used, the photopolymerization initiation assistant (c1) is preferably used in an amount of 0.1 to 40 parts by weight, more preferably 0.1 to 40 parts by weight per 100 parts by weight of the total amount of the alkali- 1 to 30 parts by weight may be included. When the amount of the photopolymerization initiator (c1) is within the above range, the sensitivity of the colored photosensitive resin composition for a red color becomes higher and the productivity of a color filter formed using the composition can be improved.

The colorant (D)

In one embodiment of the present invention, the colorant (D) comprises a brominated diketopyrrolopyrrole compound represented by the following formula (4) as a pigment.

[Chemical Formula 4]

The compound represented by Formula 4 may be contained in an amount of 5 to 100% by weight, for example, 50 to 100% by weight based on 100% by weight of the entire colorant. When the compound represented by the above-mentioned formula (4) is contained within the above range, the coloring power may be somewhat lowered.

The colorant (D) is a colorant selected from the group consisting of compounds represented by the following general formula (5) and C.I. Pigment Red 177 may also be included.

[Chemical Formula 5]

The compound represented by the formula (4) and the compound represented by the formula (5) may be synthesized directly, or a commercially available form may be purchased and used. A commercial product of the compound represented by the formula (4) is Irgaphor (R) Red S 3620 CF of BASF, and CI Pigment Red 254 is a commercially available product of the compound (5).

The compound represented by Formula 4 and the compound represented by Formula 5 may be contained in a weight ratio of 1: 9 to 9: 1.

The compound represented by Chemical Formula 5 may be contained in an amount of 5 to 60% by weight based on 100% by weight of the total colorant. Pigment Red 177 may be contained in an amount of 5 to 70% by weight based on 100% by weight of the entire colorant.

The compound represented by Chemical Formula 5 and C.I. If Pigment Red 177 is contained below the above range, the tinting strength may be somewhat lowered. If the above range is exceeded, pattern formation may be somewhat difficult, which may cause a decrease in adhesion.

When the compound represented by Chemical Formula 5 and CI Pigment Red 177 satisfy the above content ranges, the adhesion can be prevented from lowering and the reliability can be increased.

The colorant is a compound represented by the formula (4), a compound represented by the formula (5), and C.I. In addition to Pigment Red 177, it may further comprise another pigment.

The pigment may be an organic pigment or an inorganic pigment generally used in the art. The pigment may be subjected to a surface treatment using a pigment treatment, a pigment derivative into which an acidic group or a basic group is introduced, a graft treatment of the surface of the pigment with a polymer compound, an atomization treatment using a sulfuric acid atomization method or the like, A cleaning treatment with an organic solvent or water, or a treatment for removing ionic impurities by ion exchange or the like.

The organic pigments specifically include water-soluble azo pigments, insoluble azo pigments, phthalocyanine pigments, quinacridone pigments, isoindolinone pigments, isoindoline pigments, perylene pigments, perinone pigments, Anthanthrone pigments, indanthrone pigments, pravantron pigments, pyranthrone pigments, diketopyrrolopyrrole pigments, and the like can be given as examples of the pigments used in the present invention. Examples of the pigments include, but are not limited to, quinone pigments, dianthraquinonyl pigments, anthrapyrimidine pigments, anthanthrone pigments, have.

Examples of the inorganic pigments include metallic compounds such as metal oxides and metal complex salts and specifically oxides or complexes of metals such as iron, cobalt, aluminum, cadmium, lead, copper, titanium, magnesium, chromium, Metal oxides and the like.

Particularly, the organic pigments and inorganic pigments include compounds classified as pigments in the Color Index (published by The Society of Dyers and Colourists), and more specifically, those having the following color index (CI) numbers And pigments. However, the present invention is not limited thereto, and they may be used alone or in combination of two or more.

CI Pigment Red 9, 97, 105, 122, 123, 144, 149, 166, 168, 176, 180, 192, 208, 215, 216, 224, 242, 255 and 264

The above-mentioned pigments may be used in combination with the above-mentioned red pigments. Specifically, yellow pigments having the following color index (C.I.) numbers may be used.

C.I. Pigment Yellow 13, 20, 24, 31, 53, 83, 86, 93, 94, 109, 110, 117, 125, 137, 138, 139, 147, 148, 150, 153, 154, 166, 173, 180 And 185

C.I. Pigment Orange 13, 31, 36, 38, 40, 42, 43, 51, 55, 59, 61, 64, 65 and 71

These pigments may be used alone or in combination of two or more.

It is preferable to use a pigment dispersion in which the particle diameter of the pigment is uniformly dispersed. An example of a method for uniformly dispersing the particle diameter of the pigment includes a method of dispersing the pigment by adding a pigment dispersant. According to this method, a pigment dispersion in which the pigment is uniformly dispersed in a solution can be obtained.

Specific examples of the pigment dispersant include cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, polyester surfactants, and polyamine surfactants. These surfactants may be used singly or in combination of two or more thereof .

The pigment dispersant is added for maintenance of deagglomeration and stability of the pigment, and any of those generally used in the art can be used without limitation. (Hereinafter, referred to as an acrylic dispersant) containing butyl methacrylate (BMA) or N, N-dimethylaminoethyl methacrylate (DMAEMA). At this time, it is preferable that the acrylic dispersant manufactured by the living control method as disclosed in Korean Patent Publication No. 2004-0014311 is applied. DISPER BYK-2000, DISPER BYK-2001, DISPER BYK-2070, and DISPER BYK-2150.

The acrylic dispersants exemplified above may be used alone or in combination of two or more.

As the pigment dispersant, other resin type pigment dispersants other than the acrylic dispersant may be used. The other resin type pigment dispersing agent may be a known resin type pigment dispersing agent, especially a polycarboxylic acid ester such as polyurethane, polyacrylate, unsaturated polyamide, polycarboxylic acid, polycarboxylic acid (partial) An amine salt of a polycarboxylic acid, an alkylamine salt of a polycarboxylic acid, a polysiloxane, a long chain polyaminoamide phosphate salt, an ester of a hydroxyl group-containing polycarboxylic acid and a modified product thereof, or a free ) Oil-based dispersants such as amides formed by reaction of a polyester having a carboxyl group with poly (lower alkyleneimine) or salts thereof; Soluble resin or water-soluble polymer compound such as (meth) acrylic acid-styrene copolymer, (meth) acrylic acid- (meth) acrylate ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol or polyvinylpyrrolidone; Polyester; Modified polyacrylates; Adducts of ethylene oxide / propylene oxide, and phosphate esters. DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK-160, BYK (trade name) 164, DISPER BYK-166, DISPER BYK-171, DISPER BYK-182, DISPER BYK-184; EFKA-4060, EFKA-4060, EFKA-4055, EFKA-4055, EFKA-4055, EFKA-4020, EFKA-4015, EFKA-4060, EFKA- 4330, EFKA-4400, EFKA-4406, EFKA-4510, EFKA-4800; SOLSPERS-24000, SOLSPERS-32550, NBZ-4204/10 from Lubirzol; Hinoact T-6000, Hinoact T-7000, Hinoact T-8000; available from Kawaken Fine Chemicals; AJISPUR PB-821, Ajisper PB-822, Ajisper PB-823 manufactured by Ajinomoto; FLORENE DOPA-17HF, fluorene DOPA-15BHF, fluorene DOPA-33, and fluorene DOPA-44 are trade names of Kyoeisha Chemical Co., In addition to the above acrylic dispersant, other resin type pigment dispersants may be used alone or in combination of two or more, and may be used in combination with an acrylic dispersant.

The amount of the pigment dispersant may be 5 to 60 parts by weight, more preferably 15 to 50 parts by weight, based on 100 parts by weight of the solid content of the pigment to be used. If the content of the pigment dispersant exceeds 60 parts by weight, the viscosity may be increased. If the content of the pigment dispersant is less than 5 parts by weight, it may be difficult to atomize the pigment and gelation after dispersion.

In one embodiment of the present invention, the colorant (D) may further comprise at least one dye.

The dye can be used without limitation as long as it has solubility in an organic solvent. It is preferable to use a dye which has solubility in an organic solvent and can ensure reliability such as solubility in an alkali developing solution, solubility in solvent and stability with time.

Examples of the dye include acid dyes having an acidic group such as a sulfonic acid and a carboxylic acid, salts of an acidic dye and a nitrogen-containing compound, sulfonamides of an acidic dye and derivatives thereof, and azo, xanthate, phthalocyanine Based acid dyes and derivatives thereof.

Preferably, the dye is a compound classified as a dye in a color index (published by The Society of Dyers and Colourists), or a known dye described in a dyeing note (coloring yarn).

The content of the colorant (D) may be 1 to 60% by weight, preferably 5 to 50% by weight, based on 100% by weight of the total solid content in the red coloring photosensitive resin composition. When the colorant (D) is included in the above-mentioned range, the color density of the pixel is sufficient even when a thin film is formed, and the residue of the non-curing portion is not lowered during development.

In the present invention, the solid content means the remaining components except for the solvent.

Solvent (E)

In one embodiment of the present invention, the solvent (E) is not particularly limited as long as it is effective in dissolving the other components contained in the colored photosensitive resin composition for a red color of the present invention, And ethers, acetates, aromatic hydrocarbons, ketones, alcohols or esters are particularly preferred.

Examples of the ethers include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether; Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether and diethylene glycol dibutyl ether, and propylene glycol monomethyl ether.

Examples of the acetates include methyl cellosolve acetate, ethyl cellosolve acetate, ethyl acetate, butyl acetate, amyl acetate, methyl lactate, ethyl lactate, butyl lactate, 3-methoxybutyl acetate, 3 Methoxy-1-butylacetate, methoxypentyl acetate, ethylene glycol monoacetate, ethylene glycol diacetate, methyl 3-methoxypropionate, propylene glycol methyl ether acetate, 3-methoxy- Butyl acetate, 1,2-propylene glycol diacetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, dipropylene glycol methyl ether acetate, 1,3-butylene glycol diacetate, diethylene glycol monobutyl ether Acetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, di Ethylene glycol monoacetate, diethylene glycol diacetate, diethylene glycol monobutyl ether acetate, propylene glycol monoacetate, propylene glycol diacetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethylene carbonate and propylene carbonate. .

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

The ketones include, for example, methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone.

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

Examples of the esters include ethyl 3-ethoxypropionate, methyl 3-methoxypropionate and? -Butyrolactone.

These solvents may be used alone or in combination of two or more.

The solvent is preferably an organic solvent having a boiling point of 100 ° C to 200 ° C in terms of coating property and dryness, and examples thereof include alkylene glycol alkyl ether acetates, alkylene glycol monoalkyl ethers, ketones, esters Propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, cyclohexanone, ethyl lactate, butyl lactate, ethyl 3-ethoxypropionate, and 3- Methyl methoxypropionate, and the like.

The solvent (E) may be contained in an amount of 60 to 90% by weight based on 100% by weight of the total of the colored photosensitive resin composition for a red color. When the above-mentioned solvent is included in the above-mentioned range, the coating property can be improved when the coating composition is applied by a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater)

Additive (F)

The color photoresist composition for a red color filter of the present invention can be used in combination with additives such as other polymer compounds, a curing agent, a surfactant, an adhesion promoter, an antioxidant, an ultraviolet absorber and an anti-

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

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

Specific examples of the epoxy compound in the curing agent include bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin, hydrogenated bisphenol F epoxy resin, novolac epoxy resin, other aromatic epoxy resin, alicyclic epoxy Aliphatic, alicyclic or aromatic epoxy compounds other than the brominated derivatives, epoxy resins and brominated derivatives of such epoxy resins, butadiene (co) polymeric epoxides, isoprene (co) polymeric epoxy resins, glycidyl ester resins, glycidyl amine resins, (Co) polymer epoxides, glycidyl (meth) acrylate (co) polymers, and triglycidyl isocyanurate.

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

The curing agents exemplified above may be used alone or in combination of two or more.

The curing agent may be used together with a curing agent in combination with a curing auxiliary compound capable of ring-opening polymerization of the epoxy group of the epoxy compound and the oxetane skeleton of the oxetane compound. The curing assistant compound includes, for example, polyvalent carboxylic acids, polyvalent carboxylic anhydrides, and acid generators. The polyvalent carboxylic acid anhydrides may be those commercially available as an epoxy resin curing agent. Specific examples of the above-mentioned epoxy resin curing agent include epoxy resin curing agents such as epoxy resins, epoxy resins, epoxy resins, epoxy resins, epoxy resins, epoxy resins, Manufactured by Japan Ehwa Co., Ltd.).

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

Examples of the silicone surfactant include DC3PA, DC7PA, SH11PA, SH21PA and SH8400 from Dow Corning Toray Silicone Co., Ltd. and TSF-4440, TSF-4300, TSF-4445, TSF-4446 and TSF-4460 , And TSF-4452. Examples of the fluorine-based surfactant include Megapis F-470, F-471, F-475, F-482 and F-489 commercially available from Dainippon Ink and Chemicals, Incorporated. The above-exemplified surfactants may be used alone or in combination of two or more.

Specific examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- Aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- ( 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3- 3-isocyanatopropyltrimethoxysilane, 3-isocyanatepropyltriethoxysilane, and the like. The adhesion promoters exemplified above may be used alone or in combination of two or more. The adhesion promoter may be contained in an amount of usually 0.01 to 10% by weight, preferably 0.05 to 2% by weight based on 100% by weight of the total solid content in the colored photosensitive resin composition for a red color.

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 and the like.

The colored photosensitive resin composition for a red coloring matter according to one embodiment of the present invention can be produced, for example, by the following method.

First, the pigment in the colorant (D) is mixed with the solvent (E) and dispersed using a bead mill or the like until the average particle diameter of the pigment becomes about 0.2 탆 or less. At this time, if necessary, a part or all of the pigment dispersant, the alkali-soluble resin (A), or the dye may be mixed and dissolved or dispersed together with the solvent (E). The remaining dispersion of the alkali-soluble resin (A), the photopolymerization initiator (C), the photopolymerizable compound (B) and the additive (F) and, if necessary, the solvent (E) To prepare a colored photosensitive resin composition for a red color.

An embodiment of the present invention relates to a color filter formed using the above-described colored photosensitive resin composition for a red color. A color filter according to an embodiment of the present invention is characterized by including a colored layer formed by applying the above-mentioned colored photosensitive resin composition for a red pixel onto a substrate, and exposing and developing in a predetermined pattern.

Hereinafter, the pattern forming method using the colored photosensitive resin composition for a red coloring matter of the present invention will be described in detail.

The method of forming a pattern using the colored photosensitive resin composition for a red coloring matter of the present invention can be carried out by a method known in the art; An exposure step; And a removing step. The colored photosensitive resin composition for a red pixel of the present invention is coated on a substrate, and a pattern is formed by photo-curing and development, so that it can be used as a colored pixel (colored image).

In the application step, the colored photosensitive resin composition for a red color filter of the present invention is coated on a substrate (but not limited to, glass or silicon wafer in general) or a previously formed photosensitive resin composition layer and preliminary dried to remove volatile components such as solvents, Is a step for obtaining a coating film. At this time, the thickness of the coating film is preferably 1 to 3 mu m.

The exposure step is a step of irradiating ultraviolet rays to a specific region through a mask to cure the coating film to obtain a desired pattern. At this time, it is preferable to use a mask aligner, a stepper, or the like so as to uniformly irradiate the entire exposed portion with a parallel light beam and accurately position the mask and the substrate.

The removing step is a step of obtaining a desired pattern by irradiating ultraviolet rays to bring the coated film, which has been cured, into contact with an alkali aqueous solution to dissolve and expose the non-exposed region. After development, if necessary, post-drying may be carried out at about 140 to 200 DEG C, particularly about 150 DEG C for about 10 to 60 minutes.

The developing solution used in the above-mentioned development may be any of those known in the art without limitation, and an aqueous solution containing an alkaline compound and a surfactant may be usually used.

The alkaline compound may be an inorganic or organic alkaline compound. Specific examples of the inorganic alkaline compound include sodium hydroxide, potassium hydroxide, disodium hydrogenphosphate, sodium dihydrogenphosphate, ammonium dihydrogenphosphate, ammonium dihydrogenphosphate, potassium dihydrogenphosphate, sodium silicate, potassium silicate, sodium carbonate, Sodium hydrogen carbonate, potassium hydrogen carbonate, sodium borate, potassium borate, and ammonia. Specific examples of the organic alkaline compound include tetramethylammonium hydroxide, 2-hydroxyethyltrimethylammonium hydroxide, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, triethylamine , Monoisopropylamine, diisopropylamine, ethanolamine, and the like. These inorganic and organic alkaline compounds may be used alone or in combination of two or more. The alkaline compound may be contained in the developer in an amount of 0.01 to 10% by weight, preferably 0.03 to 5% by weight.

The surfactant may be selected from the group consisting of a nonionic surfactant, an anionic surfactant, and a cationic surfactant, or a mixture thereof. Specific examples of the nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene aryl ethers, polyoxyethylene alkyl aryl ethers, other polyoxyethylene derivatives, oxyethylene / oxypropylene block copolymers, sorbitan fatty acid esters , Polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, glycerin fatty acid esters, polyoxyethylene fatty acid esters, and polyoxyethylene alkylamines. Specific examples of the anionic surfactant include higher alcohol sulfuric acid ester salts such as sodium lauryl alcohol sulfate ester and sodium oleyl alcohol sulfate ester, alkylsulfuric acid salts such as sodium lauryl sulfate and ammonium lauryl sulfate, dodecylbenzenesulfonic acid And alkylarylsulfonic acid salts such as sodium or sodium dodecylnaphthalenesulfonate. Specific examples of the cationic surfactant include amine salts such as stearylamine hydrochloride and lauryltrimethylammonium chloride, and quaternary ammonium salts. These surfactants may be used alone or in combination of two or more. The surfactant may be contained in the developer in an amount of usually 0.01 to 10% by weight, preferably 0.05 to 8% by weight, more preferably 0.1 to 5% by weight.

One embodiment of the present invention relates to an image display apparatus provided with the color filter described above.

The color filter of the present invention can be applied to various image display devices such as an electroluminescence display device (EL), a plasma display device (PDP), a field emission display device (FED), an organic light emitting device (OLED) Applicable to devices.

The image display device of the present invention includes a configuration known in the art, except that it has the above-described color filter.

An image display apparatus according to an embodiment of the present invention includes, in addition to the above-described color filters, a red pattern layer containing red QD particles, a green pattern layer containing green quantum dot particles, and a blue pattern layer containing blue QDs A color filter may be additionally provided. In such a case, the emitted light of the light source applied to the image display device is not particularly limited, but a light source that emits blue light preferably in terms of better color reproducibility can be used.

The image display apparatus according to an embodiment of the present invention may further include a color filter including only a pattern layer of two colors of a red pattern layer, a green pattern layer, and a blue pattern layer in addition to the color filter described above. In such a case, the color filter further includes a transparent pattern layer not containing quantum dot particles. In the case where only the pattern layer of two colors is provided, a light source that emits light having a wavelength that represents the remaining color that is not included can be used. For example, when only the red pattern layer and the green pattern layer are included, a light source that emits blue light may be used. In such a case, red quantum dot particles emit red light and rust quantum dot particles emit green light, and the transparent pattern layer transmits blue light as it is and exhibits blue color.

Hereinafter, the present invention will be described more specifically with reference to Examples, Comparative Examples and Experimental Examples. It should be apparent to those skilled in the art that these examples, comparative examples and experimental examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.

Manufacturing example  1: Preparation of colorant dispersion D-1

40 parts by weight of CI Pigment Red 254 represented by the general formula (5) as a pigment, 24 parts by weight (about 10.8 parts by weight in terms of solid content) of BYK2001 (Dispersive: manufactured by BYK, solid content concentration 45.1% by weight) , 136 parts by weight of propylene glycol methyl ether acetate was mixed and dispersed by a bead mill for 12 hours to prepare a coloring agent dispersion D-1.

Manufacturing example  2: Preparation of colorant dispersion D-2

40 parts by weight of brominated diketopyrrolopyrrole (Irgaphor 占 Red S 3620 CF of BASF) represented by the general formula (4) as a pigment and 24 parts by weight of BYK2001 (manufactured by BYK, solid content concentration: 45.1% by weight) (About 10.8 parts by weight in terms of solid content) and 136 parts by weight of propylene glycol methyl ether acetate as a solvent were mixed and dispersed by a bead mill for 12 hours to prepare Colorant Dispersion D-2.

Manufacturing example  3: Preparation of colorant dispersion D-3

40 parts by weight of CI Pigment Red 177 as a pigment, 24 parts by weight (about 10.8 parts by weight in terms of solid content) of BYK2001 (manufactured by BYK, solids concentration: 45.1% by weight) as a dispersant and propylene glycol methyl ether Acetate were mixed and dispersed by a bead mill for 12 hours to prepare a coloring agent dispersion D-3.

Synthetic example  1: Synthesis of alkali-soluble resin A-1

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen inlet tube was charged with 100 g of propylene glycol monomethyl ether acetate and 100 g of propylene glycol monomethyl ether. After the atmosphere in the flask was replaced with nitrogen in air, , 3.1 g of monomethacrylate of tricyclodecane skeleton (FA-513M, manufactured by Hitachi Chemical Co., Ltd.), 55.2 g of 2-ethylhexyl acrylate, 5.9 g of 4-methylstyrene, 2.5 g of glycidyl methacrylate And 6.0 g of n-dodecanethiol. Thereafter, the temperature of the reaction solution was raised to 80 DEG C with stirring, and the reaction was carried out for 4 hours.

After the temperature of the reaction solution was lowered to room temperature and the atmosphere of the flask was replaced with air with nitrogen, 0.2 g of triethylamine, 0.1 g of 4-methoxyphenol, 43.2 g of acrylic acid and 136 g of propylene glycol monomethyl ether acetate were added dropwise from the dropping funnel for 2 hours And then reacted at 100 DEG C for 6 hours. Thereafter, the temperature of the reaction solution was lowered to room temperature, 6.0 g of succinic anhydride was added, and the reaction was carried out at 80 DEG C for 6 hours to obtain an alkali-soluble resin A-1.

The solid dispersion weight of the alkali-soluble resin was 36.2 mg KOH / g, and the weight average molecular weight (Mw) measured by GPC was about 7,540.

Synthetic example  2: Synthesis of alkali-soluble resin A-2

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen inlet tube was charged with 100 g of propylene glycol monomethyl ether acetate and 100 g of propylene glycol monomethyl ether. After the atmosphere in the flask was replaced with nitrogen in air, , 3.1 g of monomethacrylate of tricyclodecane skeleton (FA-513M manufactured by Hitachi Chemical Co., Ltd.), 38.4 g of n-butyl acrylate, 5.9 g of 4-methylstyrene, 85.2 g of glycidyl methacrylate g and n-dodecanethiol (6.0 g). Thereafter, the temperature of the reaction solution was raised to 80 DEG C with stirring, and the reaction was carried out for 4 hours.

After the temperature of the reaction solution was lowered to room temperature and the atmosphere of the flask was replaced with air with nitrogen, 0.2 g of triethylamine, 0.1 g of 4-methoxyphenol, 43.2 g of acrylic acid and 136 g of propylene glycol monomethyl ether acetate were added dropwise from the dropping funnel for 2 hours And then reacted at 100 DEG C for 6 hours. Thereafter, the temperature of the reaction solution was lowered to room temperature, 12.5 g of succinic anhydride was added, and the mixture was reacted at 80 DEG C for 6 hours to obtain an alkali-soluble resin A-2.

The solid dispersion weight of the alkali-soluble resin A-2 was 42.3 mg KOH / g, and the weight average molecular weight (Mw) measured by GPC was about 6,020.

Synthetic example  3: Synthesis of alkali-soluble resin A-3

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen inlet tube was provided with 88 g (0.5 mol) of benzyl methacrylate, 12.9 g (0.15 mol) of methacrylic acid, (0.35 mol) of toluene, 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-dodecene 6 g of cantiol 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 reaction was carried out for 2 hours while keeping the temperature at 90 占 폚, elevating the temperature to 110 占 폚 for 1 hour and conducting the reaction for 8 hours to obtain an alkali-soluble resin A-3 having a solid acid value of 70 mg KOH / g. The weight average molecular weight (Mw) as measured by GPC in terms of polystyrene was 21,000 and the molecular weight distribution (Mw / Mn) was 2.2.

Example  1 to 3 and Comparative Example  1 to 6: red For fire  Preparation of colored photosensitive resin composition

Each of the components was mixed with the composition shown in Table 1 below to prepare a colored photosensitive resin composition for red color (unit: wt%).

division
(weight%) Alkali-soluble resin Photopolymerization
compound Photopolymerization initiator Colorant dispersion solvent additive A-1 A-2 A-3 B C D-1 D-2 D-3 E F Comparative Example 1 - 10 - 5 0.6 20 - 10 54.3 0.1 Comparative Example 2 10 - - 5 0.6 20 - 10 54.3 0.1 Comparative Example 3 - - 10 5 0.6 - 20 10 54.3 0.1 Comparative Example 4 - - 10 5 0.6 4 16 10 54.3 0.1 Comparative Example 5 - - 10 5 0.6 10 16 4 54.3 0.1 Comparative Example 6 - - 10 5 0.6 10 10 10 54.3 0.1 Example 1 10 - - 5 0.6 4 16 10 54.3 0.1 Example 2 10 - 5 0.6 10 16 4 54.3 0.1 Example 3 10 - - 5 0.6 - 30 - 54.3 0.1

Alkali-soluble resin

A-1: An alkali-soluble resin of Synthesis Example 1

A-2: An alkali-soluble resin of Synthesis Example 2

A-3: An alkali-soluble resin of Synthesis Example 3

Photopolymerizable compound (B): A9550 (Shin Nakamura)

Photopolymerization initiator (C): OXE-01 (BASF)

Colorant dispersion (D)

D-1: Colorant dispersion of Preparation Example 1

D-2: Colorant dispersion of Preparation Example 2

D-3: Colorant dispersion of Preparation Example 3

Solvent (E): Propylene glycol monomethyl ether acetate

Additive (F): Silicone surfactant SH8400 (Dow Corning Toray Silicone Co.)

Experimental Example  One

Using the colored photosensitive resin composition for a red color produced in the above Examples and Comparative Examples, a color filter was prepared as follows. The black color developer residue and the pattern slope were measured by the following method. Table 2 shows the results.

≪ Production of color filter &

The colored photosensitive resin composition for a red color was applied to the top of a glass substrate by spin coating, and then placed on a heating plate and held at a temperature of 100 캜 for 3 minutes to form a color layer thin film. Then, a test photomask having a line / space pattern of 1 to 50 mu m was placed thereon, and ultraviolet light was irradiated at a distance of 250 mu m from the test photomask. At this time, the ultraviolet light source was irradiated at a light intensity of 50 mJ / cm 2 using a 1 kW high pressure mercury lamp containing g, h and i lines, and no special optical filter was used. The color layer thin film irradiated with ultraviolet rays was immersed in a KOH aqueous solution of pH 10.5 for 2 minutes for development. The glass substrate on which the developed color layer thin film was formed was washed with distilled water, dried in a nitrogen gas atmosphere, and heated for 1 hour in a heating oven at 200 ° C to thermally cure the color filter.

(1) Black Matrix Award Residue

The colored photosensitive resin composition for a red color was applied onto a substrate having a black matrix formed thereon by spin coating, and then placed on a heating plate and held at a temperature of 100 캜 for 3 minutes to form a color layer thin film. Then, a test photomask having a line / space pattern of 1 to 50 mu m was placed thereon, and ultraviolet light was irradiated at a distance of 250 mu m from the test photomask. At this time, the ultraviolet light source was irradiated at a light intensity of 50 mJ / cm 2 using a 1 kW high pressure mercury lamp containing g, h and i lines, and no special optical filter was used. The color layer thin film irradiated with ultraviolet rays was immersed in a KOH aqueous solution of pH 10.5 for 2 minutes for development. Thereafter, the presence or absence of development residue on the black matrix was observed, and evaluated by the following evaluation criteria.

<Evaluation Criteria>

○: No residue on black matrix

×: with development residue on black matrix

(2) Pattern tilt

The taper angle of the generated pattern was measured by a scanning electron microscope, and the slope of the pattern was evaluated as the following evaluation criteria. Here, the taper angle means an angle formed by the end portion of the pattern with the lower layer, that is, the surface of the glass substrate.

<Evaluation Criteria>

○: 45 ° or less

DELTA: more than 45 DEG and less than 65 DEG

×: exceed 65 °

Black Matrix Award Residue Pattern tilt Comparative Example 1 ○ Δ Comparative Example 2 × × Comparative Example 3 × × Comparative Example 4 × × Comparative Example 5 × × Comparative Example 6 × × Example 1 ○ ○ Example 2 ○ ○ Example 3 ○ ○

As shown in Table 2 above, the coloring for red coloring matters of Examples 1 to 3 containing an alkali-soluble resin containing a tricyclodecanyl group-containing repeating unit according to the present invention and containing a brominated diketopyrrolopyrrole compound as a coloring agent It was confirmed that the photosensitive resin composition was suppressed from generating a residue on the black matrix and the slope of the pattern was gentle. On the other hand, the colored photosensitive resin compositions for red color filters of Comparative Examples 1 to 6, which did not contain any one of the alkali-soluble resin containing the tricyclodecanyl group-containing repeating unit and the brominated diketopyrrolopyrrole compound, It was confirmed that the slope of the pattern was not gentle.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Do. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the actual scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. A colored photosensitive resin composition for a red color element, comprising an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, a colorant and a solvent,
Wherein the alkali-soluble resin comprises a repeating unit represented by the following general formulas (1) to (3)
Wherein the colorant comprises a compound represented by the following formula (4) in an amount of 5 to 100% by weight based on 100% by weight of the total colorant:
[Chemical Formula 1]

(2)

(3)

[Chemical Formula 4]

In this formula,
R ¹ , R ² , R ⁴ and R ⁶ are each independently hydrogen or methyl,
R ³ is a C ₁ -C ₂₀ alkyl group,
R &lt; ⁵ &gt; is a residue comprising a carboxylic acid derived by an acid anhydride,
n, m and q are each independently an integer of 1 to 500. The method of claim 1, wherein the acid anhydride is selected from the group consisting of succinic anhydride, methylsuccinic anhydride, (2-dodecen-1-yl) succinic anhydride, phenylsuccinic anhydride, phthalic anhydride, citraconic anhydride, glutaric anhydride , 3,3-dimethylglutaric anhydride, itaconic anhydride, 3,4,5,6-tetrahydrophthalic anhydride, trimellitic anhydride, hexahydrophthalic anhydride, and carboxylic acid anhydride. A colored photosensitive resin composition for a color filter. The colored photosensitive resin composition for a red coloring matter according to claim 1, wherein the coloring agent further comprises a compound represented by the following formula (5) and CI Pigment Red 177:
[Chemical Formula 5]

delete A color filter formed by using the colored photosensitive resin composition for a red coloring matter according to any one of claims 1 to 3. An image display apparatus comprising the color filter according to claim 5.