KR101413077B1 - Photosensitive resin composition for color filter and color filter using the same - Google Patents

Abstract

상기 화학식 1에서,
A₁은 수소 또는 메틸기이며,
A₂는 하기 화학식 2로 표현되며,
[화학식 2]

(상기 화학식 2에서, 각 치환기는 명세서에 정의된 바와 같다.)The present invention relates to a photosensitive resin composition for a color filter and a color filter using the same. The photosensitive resin composition for a color filter comprises (A) a dye-polymer composite comprising a structural unit represented by the following formula (1), (B) (C) a photopolymerization initiator, and (D) a solvent.
[Chemical Formula 1]

In Formula 1,
A ₁ is hydrogen or a methyl group,
A ₂ is represented by the following formula (2)
(2)

(In the above formula (2), each substituent is as defined in the specification.)

Description

TECHNICAL FIELD [0001] The present invention relates to a photosensitive resin composition for a color filter, and a color filter using the same. BACKGROUND ART [0002]

A color filter, and a color filter using the same.

The liquid crystal display device, which is one of the display devices, has advantages such as lightness, thinness, low cost, low power consumption driving and bonding with a good integrated circuit, and the use range thereof is expanded for notebook computers, monitors and TV images. The liquid crystal display device includes a lower substrate on which a black matrix, a color filter, and ITO pixel electrodes are formed, an active circuit including a liquid crystal layer, a thin film transistor and a capacitor capacitor layer, and an upper substrate on which ITO pixel electrodes are formed. The color filter includes a black matrix layer formed in a predetermined pattern on a transparent substrate so as to shield the boundary between pixels, and a plurality of colors (typically red (R), green (G), blue B) are arranged in a predetermined order in the order named.

The pigment dispersion method, which is one of the methods of implementing a color filter, is a method in which a photosensitive resin composition containing a colorant and including an alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, an epoxy resin, a solvent and other additives is coated on a transparent substrate provided with a black matrix, A method of forming a colored thin film by repeating a series of processes of exposing a pattern to be formed and removing an unexposed portion with a solvent to thermally cure the substrate, . However, in recent years, a photosensitive resin composition for a color filter using a pigment dispersion method having various merits has been required to have not only good pattern characteristics but also high color reproducibility as well as high performance such as high brightness and high contrast ratio.

The image sensor refers to a component of an image pickup device that generates an image in a mobile phone camera or a digital still camera (DSC). The image sensor may be classified into a charge coupleddevice (CCD) image Sensor and a complementary metal oxide semiconductor (CMOS) image sensor. A color image pickup device used for a solid state image pickup device or a complementary metal oxide semiconductor image sensor has a filter segment of additive mixed primary colors of red, green and blue on its light receiving element It is common to install color filters separately and color decompose them. The pattern size of the color filter mounted on such a color imaging device is less than 2 mu m and is 1/100 to 1/200 times larger than that of the conventional color filter pattern for LCD. Accordingly, the increase of the resolution and the reduction of the residue are important items that determine the performance of the device.

In a color filter made of a photosensitive resin composition for a pigment type color filter, there is a limit of brightness and contrast ratio due to the pigment particle size. Further, in the case of a color imaging device for an image sensor, a smaller dispersion particle size is required for fine pattern formation. An attempt has been made to introduce a dye which does not form particles instead of a pigment into a photosensitive resin composition for a color filter suitable for a dye to realize a color filter having improved luminance and contrast ratio (Korean Patent Publication No. 1999-0007097 Korean Patent Publication No. 2002-0015650, and Korean Patent Publication No. 2005-0020653).

An embodiment of the present invention is to provide a photosensitive resin composition for a color filter which realizes a color filter having improved luminance and contrast ratio.

Another embodiment of the present invention is to provide a color filter using the photosensitive resin composition for a color filter.

One embodiment of the present invention relates to a color filter comprising (A) a dye-polymer complex comprising a structural unit represented by the following formula (1), (B) an acrylic photopolymerizable monomer, (C) a photopolymerization initiator, and A photosensitive resin composition is provided.

[Chemical Formula 1]

In Formula 1,

A ₁ is hydrogen or a methyl group,

A ₂ is represented by the following formula (2)

(2)

In Formula 2,

M is Cu, Zn, In, Al, Zr or Mg,

R ¹ to R ¹⁶ (CH ₂ ) _n O-, wherein n is an integer of 1 to 10, and - (CH ₂ ) _n -, wherein n is an integer of 1 to 10, and one of R 1 and _{R 2} is -O-, -COO-, -OCO-, -O O- may be replaced with a halogen atom), and the remaining are independently a hydrogen atom, -F, -Br or -Cl.

The structural unit represented by the formula (1) may be contained in an amount of 1 to 50 mol% based on the total amount of the dye-polymer complex (A).

An embodiment of the present invention relates to a photocurable composition comprising (A) 0.5 to 40% by weight of the dye-polymer composite, (B) 0.5 to 20% by weight of the acrylic photopolymerizable monomer, (C) 0.1 to 10% ) The solvent residual portion is provided for the photosensitive resin composition for a color filter.

The weight average molecular weight (Mw) of the dye-polymer conjugate (A) may be 3,000 to 20,000.

The dye-polymer conjugate (A) may include at least one of the structural units represented by the following formulas (3) to (5).

(3)

[Chemical Formula 4]

[Chemical Formula 5]

In the above formulas (3) to (5)

R ¹⁷ , R ¹⁸ , R ¹⁹ , R ²¹ , R ²³ is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C30 alkylaryl group, a substituted or unsubstituted C6 to C30 heteroaryl group, Combinations thereof,

R ²⁰ represents a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, -CO-R ²⁵ -COOH (R ²⁵ represents a substituted or unsubstituted C1 to C30 alkylene group, A substituted C1 to C30 alkoxysilyl group, or a combination thereof,

R ²² is -COOH or -CONHR ²⁶ wherein R ²⁶ is a substituted or unsubstituted C1 to C30 alkyl group or a substituted or unsubstituted C6 to C30 aryl group,

R < ²⁴ > is -COOH,

R ²² and R ²⁴ are fused together to form a ring,

and m is an integer of 0 to 5.

The dye-polymer conjugate (A) comprises the compounds represented by formulas (3) to (5) as o, p and q moles, wherein o, p and q satisfy 0? O? 70, 0? P? (Provided that o, p and q are not 0 at the same time).

The structural units represented by the above formulas (3) to (5) may be contained in an amount of 0.1 to 50% by weight based on the total amount of the dye-polymer conjugate (A).

The photosensitive resin composition for a color filter may further comprise a pigment, a dye or a combination thereof, and may be contained in an amount of 1 to 40% by weight based on the total amount of the photosensitive resin composition for a color filter.

The photosensitive resin composition for a color filter may further comprise an acrylic binder resin, and the acrylic binder resin may be contained in an amount of 1 to 20 wt% based on the total amount of the photosensitive resin composition for a color filter.

Another embodiment of the present invention provides a color filter manufactured using the photosensitive resin composition for a color filter.

It is possible to realize a color filter having improved brightness and contrast ratio by using the photosensitive resin composition for a color filter according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

&Quot; Aryl group " means a C6 to C30 aryl group, " arylalkyl group " means a C7 to C30 arylalkyl group, and " Alkylene group "means a C1 to C20 alkylene group, and the " alkoxysilylene group " means a C1 to C20 alkoxysilylene group.

As used herein, the term "substituted" means that at least one hydrogen atom of the functional group of the present invention is a halogen atom (F, Cl, Br, or I), a hydroxyl group, a nitro group, a cyano group, = NH, = NR and R is a C1 to C10 alkyl group), an amino group (-NH2, -NH (R '), -N (R ") A substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C3 to C30 cycloalkyl group, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C2 to C30 alkoxy group, Or an unsubstituted C3 to C30 heteroaryl group and a substituted or unsubstituted C2 to C30 heterocycloalkyl group.

Means one to three heteroatoms selected from the group consisting of N, O, S and P in one functional group, and the remainder is carbon, unless otherwise defined.

In the present specification, "*" means the same or different atom or part connected to a chemical formula.

A photosensitive resin composition for a color filter according to an embodiment of the present invention comprises (A) a dye-polymer complex comprising a structural unit represented by the following formula (1), (B) an acrylic photopolymerizable monomer, (C) 　 And (D) a solvent.

[Chemical Formula 1]

In Formula 1,

A ₁ is hydrogen or a methyl group,

A ₂ is represented by the following formula (2)

(2)

In Formula 2,

M is Cu, Zn, In, Al, Zr or Mg,

R ¹ to R ¹⁶ (CH ₂ ) _n O-, wherein n is an integer of 1 to 10, and - (CH ₂ ) _n -, wherein n is an integer of 1 to 10, and one of R 1 and _{R 2} is -O-, -COO-, -OCO-, -O O- may be replaced with a halogen atom), and the remaining are independently a hydrogen atom, -F, -Br or -Cl.

Hereinafter, each component contained in the photosensitive resin composition for a color filter according to the present invention will be described in detail.

(A) Dye- Polymer  Complex

The dye-polymer complex includes a structural unit represented by the following formula (1).

[Chemical Formula 1]

In Formula 1,

A ₁ is hydrogen or a methyl group,

A ₂ is represented by the following formula (2)

(2)

In Formula 2,

M is Cu, Zn, In, Al, Zr or Mg. Specifically, M may be Cu, Zn, In or Al, and R ¹ to R ¹⁶ (CH ₂ ) _n O-, wherein n is an integer of 1 to 10, and - (CH ₂ ) _n -, wherein n is an integer of 1 to 10, and one of R 1 and _{R 2} is -O-, -COO-, -OCO-, -O O- may be replaced with a halogen atom), and the rest of R 1 and R 2 are each independently a hydrogen atom, -F, -Br or -Cl, for example, R ¹ to R ¹⁶ May be -COO- or - (CH ₂ ) _n O-, wherein all of said O may be connected to an aromatic ring.

The dye-polymer conjugate can be obtained by subjecting a dye compound capable of deriving the structural unit represented by the formula (1) to a copolymerizable monomer. In one embodiment, the dye-polymer complex can be obtained by copolymerizing a phthalocyanine dye having the structure of Formula 2 having an unsaturated ethylene group at the positions of R ¹ to R ¹⁶ .

The photosensitive resin composition for a color filter comprising a dye-polymer complex obtained by polymerizing a dye containing the structural formula (2) has excellent compatibility with a dye and a pigment dispersion, unlike the case where a direct dye is included. Therefore, there is no fear that the dye will precipitate, and the photosensitive resin composition for a color filter can substantially contain more dyes, so that the same effect can be obtained even when a small pigment dispersion is used. In addition, the luminance and contrast ratio of the color filter can be improved by reducing the content of the pigment dispersion.

When the dye-polymer composite is used, there is no fear that the dye is extracted by water or an organic solvent. Therefore, there is an advantage that heat resistance and chemical resistance are improved when a color filter is manufactured.

The dye-polymer conjugate (A) may be contained in an amount of 0.5 to 40% by weight, for example, 1 to 30% by weight based on the total amount of the photosensitive resin composition for a color filter. When the content of the dye-polymer composite (A) is in the above range, the developing property to an alkaline developing solution is excellent, the crosslinking property is good, the surface roughness is reduced, the chemical resistance is good and pattern peeling does not occur, Does not change.

In addition to the structural unit represented by the formula (1), the dye-polymer conjugate includes a structural unit derived from a first ethylenic unsaturated monomer 　 And a structural unit derived from a second ethylenically unsaturated monomer copolymerizable therewith.

The first ethylenically unsaturated monomer is an ethylenically unsaturated monomer containing at least one carboxyl group, and specifically may be selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid, and combinations thereof.

The weight ratio of the first ethylenically unsaturated monomer may be 1 to 50 wt%, preferably 3 to 40 wt%, more preferably 5 to 30 wt%, based on the total weight of the monomers forming the dye- % ≪ / RTI > by weight.

Examples of the second ethylenic unsaturated monomer include an alkenyl aromatic monomer, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, a carboxylic acid vinyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a vinyl cyanide Compounds, unsaturated amide compounds, and combinations thereof.

Representative examples of the alkenyl aromatic monomer include styrene,? -Methylstyrene, vinyltoluene, vinylbenzyl methyl ether, and the like; Representative examples of the above unsaturated carboxylic acid ester compound include monomers such as methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate, 2-hydroxyethyl acrylate, 2- Benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-hydroxybutyl methacrylate, 2-hydroxybutyl methacrylate, And the like; Representative examples of the unsaturated carboxylic acid aminoalkyl ester compound include 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate and the like; Typical examples of the carboxylic acid vinyl ester compound include vinyl acetate and vinyl benzoate; Representative examples of the unsaturated carboxylic acid glycidyl ester compound include glycidyl acrylate, glycidyl methacrylate and the like; Representative examples of the vinyl cyanide compound include acrylonitrile, methacrylonitrile and the like; Representative examples of the unsaturated amide compound include, but are not limited to, acrylamide, methacrylamide, and the like. These unsaturated second ethylenically unsaturated monomers may be used singly or in combination of two or more thereof.

The dye-polymer conjugate (A) may include at least one of the structural units represented by the following formulas (3) to (5) in addition to the structural unit represented by the formula (1).

(3)

[Chemical Formula 4]

[Chemical Formula 5]

In the above formulas (3) to (5)

R ¹⁷ , R ¹⁸ , R ¹⁹ , R ²¹ , R ²³ is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C30 alkylaryl group, a substituted or unsubstituted C6 to C30 heteroaryl group, Combinations thereof,

R ²⁰ represents a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, -CO-R ²⁵ -COOH (R ²⁵ represents a substituted or unsubstituted C1 to C30 alkylene group, A substituted C1 to C30 alkoxysilyl group, or a combination thereof,

R ²² is -COOH or -CONHR ²⁶ wherein R ²⁶ is a substituted or unsubstituted C1 to C30 alkyl group or a substituted or unsubstituted C6 to C30 aryl group,

R < ²⁴ > is -COOH,

R ²² and R ²⁴ are fused together to form a ring. For example, -COOH of R ²² and -CONHR ²⁶ of R ²⁴ may react with each other to form an imide ring,

and m is an integer of 0 to 5.

The dye-polymer conjugate (A) contains all of the structural units represented by the above formulas (3) to (5), and each structural unit is represented by o, p, q  The molar ratio o, p, and q may be in the range of 0? O? 70, 0? P? 40, and 0? Q? 30, and specifically 0? O? 50, 0? P? 30, 0? Q? 20. Provided that o, p and q are not 0 at the same time. When the structural units represented by the above-mentioned formulas (3) to (5) have the above-mentioned molar ratio range, they are advantageous for ensuring adequate developability, heat resistance and chemical resistance.

The content of the structural unit represented by the above formulas 3 to 5 may be from 0.1 to 50% by weight, for example, from 30 to 40% by weight, based on the total amount of the dye-polymer composite (A). When the structural unit selected from the above-mentioned formulas (3) to (5) is included in the above-described range, the effect of improving the chemical resistance and chemical resistance is high, the pattern stability is good and the light transmission property is not deteriorated .

The weight average molecular weight (Mw) of the dye-polymer conjugate (A) may be from 3,000 to 20,000, for example, from 5,000 to 15,000, and still more preferably from 7,000 to 10,000. When the weight average molecular weight (Mw) of the dye-polymer composite (A) is too large, it is difficult to synthesize and there is a possibility that the dye compound precipitates.

The acid value of the dye-polymer conjugate (A) is 0 to 300 mgKOH / g, for example, 10 to 200 mgKOH / g. When the weight average molecular weight and acid value of the dye-polymer conjugate (A) fall within the above range, excellent developability can be obtained.

In addition, the amount of the structural unit represented by the general formula (1) contained in the dye-polymer complex (A) can be appropriately controlled depending on the purpose. The structural unit represented by the formula (1) may be contained in an amount of 0.1 to 50% by weight, for example, 1 to 40% by weight based on the total amount of the dye-polymer composite (A). If the structural unit represented by the above formula (1) is included in the above range, excellent chemical resistance and heat resistance can be obtained without causing dye precipitation due to excessive dye.

The degree of crosslinking by the dye-polymer conjugate (A) can be determined according to the constitution ratio of the acrylic photopolymerizable monomer and the photopolymerization initiator described below, and by controlling the composition ratio of the acrylic photopolymerizable monomer and the photopolymerization initiator The degree of crosslinking can be controlled.

(B) Acrylic Photopolymerization  Monomer

The photopolymerizable monomer may be contained in the photosensitive resin composition for a color filter, and known photopolymerizable monomers may be used.

Specific examples of the photopolymerizable monomer include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, propylene glycol di (meth) Acrylate, pentaerythritol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neopentyl glycol di (meth) acrylate, pentaerythritol di Acrylate, pentaerythritol tetra (meth) acrylate, pentaerythritol penta (meth) acrylate, pentaerythritol hexa (meth) acrylate, dipentaerythritol di (meth) acrylate, dipentaerythritol tri (Meth) acrylate, dipentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (Meth) acrylate, dipentaerythritol penta (meth) acrylate derivatives having a carboxyl group, ethylene oxide-modified glycerin trimethylol (meth) acrylate, Propane tri (meth) acrylate, propylene oxide-glycerine tri (meth) acrylate, and the like.

Since the photopolymerizable monomer or oligomer tends to react with the cyclic ether to improve the solvent resistance, it is preferable to include a carboxyl group. Examples of the photopolymerizable monomer or oligomer having a carboxyl group include esters of a (meth) acrylate containing a hydroxyl group and a polyvalent carboxylic acid; An ester of a (meth) acrylate containing a hydroxyl group and a polycarboxylic anhydride; And the like.

Examples of the hydroxyl group-containing (meth) acrylate include trimethylolpropane di (meth) acrylate, glycerin di (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol penta And the like.

Examples of the polyvalent carboxylic acid include phthalic acid, 3,4-dimethylphthalic acid, isophthalic acid, terephthalic acid, pyromellitic acid, trimellitic acid, 1,4,5,8-naphthalenetetracarboxylic acid, 3,3 ' , 4'-benzophenonetetracarboxylic acid, and other aromatic polycarboxylic acids; Aliphatic polycarboxylic acids such as succinic acid, glutaric acid, adipic acid, 1,2,3,4-butanetetracarboxylic acid, maleic acid, fumaric acid and itaconic acid; Hexahydrophthalic acid, hexahydroterephthalic acid, 1,2,4-cyclopentanetricarboxylic acid, 1,2,4-cyclohexanetricarboxylic acid, cyclopentane, cyclohexanetricarboxylic acid, Alicyclic polycarboxylic acids such as tetracarboxylic acid, 1,2,4,5-cyclohexane, and tetracarboxylic acid; And the like.

Examples of the polycarboxylic acid anhydrides include aromatic polycarboxylic anhydrides such as phthalic anhydride, pyromellitic anhydride, trimellitic anhydride, 3,3 ', 4,4'-benzophenonetetracarboxylic acid dianhydride; Aliphatic polycarboxylic anhydrides such as maleic anhydride, itaconic anhydride, succinic anhydride, citraconic anhydride, dodecenylsuccinic anhydride, tricarbalic acid anhydride, maleic anhydride, and 1,2,3,4-butanetetracarboxylic acid dianhydride; Cyclopentanetricarboxylic acid anhydride, 1,2,4-cyclohexanetricarboxylic acid anhydride, cyclopentanetetracarboxylic acid anhydride, cyclopentanetetracarboxylic acid anhydride, cyclopentanetetracarboxylic acid anhydride, Alicyclic polycarboxylic anhydrides such as anhydride, 1,2,4,5-cyclohexanetetracarboxylic acid dianhydride, anhydrous anhydride, and anhydrous anthraquinic acid; Ester group-containing carboxylic acid anhydrides such as ethylene glycol bistrimellitic acid and glycerin tristrimellitate anhydride; And the like.

Thus, specific examples of monomers and oligomers containing a carboxyl group include phthalic acid esters of trimethylolpropane di (meth) acrylate, succinic acid esters of glycerin di (meth) acrylate, phthalic acid esters of pentaerythritol tri (meth) Succinic acid esters of pentaerythritol triacrylate, phthalic acid esters of dipentaerythritol penta (meth) acrylate, and succinic acid esters of dipentaerythritol penta (meth) acrylate.

The amount of the acrylic photopolymerizable monomer to be used is preferably 0.5 to 20% by weight based on the total amount of the photosensitive resin composition for a color filter. When the content of the acrylic photopolymerizable monomer is in the above range, edges of the pattern are cleanly formed and developability in an alkaline developer is good.

(C) Light curing Initiator

Examples of the photopolymerization initiator to be used in the present invention include a photopolymerization initiator which is selected from the group consisting of a triazine-based compound, an acetophenone-based compound, a nonimidazole-based compound, a benzoin-based compound, a benzophenone-based compound, a thioxanthone- But the present invention is not limited thereto.

Specific examples of the triazine compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) (Trichloromethyl) -6- (4-methoxystyryl) -1,3,5-triazine, 2,4-bis Azine, 2,4-bis (trichloromethyl) -6- [2- (5-methylfuran-2-yl) ethenyl] -1,3,5-triazine, 2,4- Yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino- Methylphenyl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (3,4- dimethoxyphenyl) ethenyl] (Trichloromethyl) -6-piperonyl) -1,3,5-triazine, 2,4,6-trichloro-s-triazine, 2-phenyl- (Trichloromethyl) -s-triazine, 2- (3 ', 4'-dimethoxystyryl) -4,6-bis 4'-methoxynaphthyl) -4,6-bis (trichloromethyl) -s-triazine (Trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-tri Azine, 2-biphenyl-4,6-bis (trichloromethyl) -s-triazine, bis (trichloromethyl) 4,6-bis (trichloromethyl) -s-triazine, 2- (4-methoxynaphtho-1-yl) (4'-methoxystyryl) -6-triazine and the like, among which 2,4-bis (trichloro Methyl) -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- (4-methoxynaphthyl) (Trichloromethyl) -6- (4-methoxystyryl) -1,3,5-triazine or 2,4-bis (trichloromethyl) -6-piperonyl 1,2,5-triazine, especially 2,4-bis (trichloromethyl) -6-piperonyl-1,3,5-triazine.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-methyl-2-morpholino-1- (4-methylthiophenyl) propan- 2-methyl-1- [4- (2-hydroxyethoxy) phenyl] propan-1-one, 1-hydroxycyclohexylphenyl Ketone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan- 1-one and 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propan-1-one. Of these, 2-dimethylamino-1- (4-morpholinophenyl) butan-1-one or 2- (4-methylbenzyl) 2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, especially 2-benzyl- 2- (4-methylbenzyl) -2-dimethylamino-1- (4- Phenyl) butane-1-one can be used.

Examples of the non-imidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'- -4,4 ', 5,5'-tetra (4-carboethoxyphenyl) biimidazole, 2,2', -bis (2-chlorophenyl) -4,4 ' (2-chlorophenyl) -4,4 ', 5,5'-tetra (2,4-dichlorophenyl) biimidazole, 2,2'-bis Bis (2-bromophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,4-dichlorophenyl) -4,4' -Tetraphenylimidazole, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetra (m-methoxyphenyl) Dichlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,6-dichlorophenyl) -4,4', 5,5'-tetra Phenylbimidazole, 2,2'-bis (2-nitrophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole and 2,2'-bis (2-methylphenyl) , And 5,5'-tetraphenylbiimidazole. Of these, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'- L, 2'-bis (2,3-dichlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole can be used.

Examples of the benzoin compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, and benzyl dimethyl ketal.

Examples of the benzophenone compound include benzophenone, benzoyl benzoic acid, methyl o-benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 3,3'-dimethyl- 4'-dichlorobenzophenone, 4,4'-bis (dimethylamino) benzophenone, 4,4'-bis (diethylamino) benzophenone, 4-benzoyl- ', 4,4'-tetra (tert-butylperoxycarbonyl) benzophenone, and 2,4,6-trimethylbenzophenone.

Examples of the thioxanthone compound include thioxanthone, 2-methylthioxanthone, 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, Isopropylthioxanthone, 2-chlorothioxanthone, 1-chloro-4-propoxythioxanthone, and the like.

Examples of the oxime compounds include O-acyloxime compounds such as 2- (O-benzoyloxime) -1- [4- (phenylthio) phenyl] -1,2-octanedione, 1- 1- [9-ethyl-6- (2-methylbenzoyl) -9H-carbazol-3-yl] ethanone, O-ethoxycarbonyl- have. Specific examples of the O-acyloxime-based compound include 1- (4-phenylsulfanylphenyl) -butane-1,2-dione 2-oxime-O-benzoate, 1- -1-one oxime-O-acetate and 1- (4-phenylsulfanylphenyl) -butane-l, 2-dione 2-oxime- 1-one oxime-0-acetate.

In addition to the photopolymerization initiators described above, carbazole compounds, diketone compounds, sulfonium borate compounds, diazo compounds and the like can also be used.

In addition, the photoinitiator may be used in combination with a photosensitizer that generates a chemical reaction by transferring energy after being excited by absorbing light.

The photopolymerization initiator may be used in an amount of 0.1 to 10% by weight based on the total amount of the photosensitive resin composition for a color filter. When the content of the photopolymerization initiator is in the above range, photopolymerization occurs sufficiently during exposure in the pattern formation step and does not cause a decrease in transmittance due to the unreacted initiator remaining after the photopolymerization.

The degree of crosslinking by the dye-polymer conjugate (A) is determined according to the constitution ratio of the acrylic-based photopolymerizable monomer (B) and the photopolymerization initiator (C) The degree of crosslinking can be controlled by controlling the composition ratio of the crosslinking agent.

(D) Solvent

The solvent is compatible with the dye-polymer conjugate (A) and other constituent materials, but those that do not react are used.

Examples of the solvent include alcohols such as methanol and ethanol; Ethers such as dichloroethyl ether, n-butyl ether, diisobutyl ether, methylphenyl ether and tetrahydrofuran; Glycol ethers such as ethylene glycol monomethyl ether and ethylene glycol monoethyl ether; Cellosolve acetates such as methyl cellosolve acetate, ethyl cellosolve acetate and diethyl cellosolve acetate; Carbitols such as methylethylcarbitol, diethylcarbitol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol methyl ethyl ether and diethylene glycol diethyl ether; Propylene glycol alkyl ether acetates such as propylene glycol methyl ether acetate and propylene glycol propyl ether acetate; Aromatic hydrocarbons such as toluene and xylene; Ketones such as methyl ethyl ketone, cyclohexanone, 4-hydroxy-4-methyl-2-pentanone, methyl-n-propyl ketone, methyl- ; Saturated aliphatic monocarboxylic acid alkyl esters such as ethyl acetate, n-butyl acetate and isobutyl acetate; Lactic acid esters such as methyl lactate and ethyl lactate; Oxyacetic acid alkyl esters such as methyl oxyacetate, ethyl oxyacetate and butyl oxyacetate; Alkoxyacetic acid alkyl esters such as methyl methoxyacetate, ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, and ethyl ethoxyacetate; 3-oxypropionic acid alkyl esters such as methyl 3-oxypropionate and ethyl 3-oxypropionate; 3-alkoxypropionic acid alkyl esters such as methyl 3-methoxypropionate, ethyl 3-methoxypropionate, ethyl 3-ethoxypropionate and methyl 3-ethoxypropionate; 2-oxypropionic acid alkyl esters such as methyl 2-oxypropionate, ethyl 2-oxypropionate and propyl 2-oxypropionate; 2-alkoxypropionic acid alkyl esters such as methyl 2-methoxypropionate, ethyl 2-methoxypropionate, ethyl 2-ethoxypropionate and methyl 2-ethoxypropionate; 2-methylpropionic acid esters such as methyl 2-oxy-2-methylpropionate and ethyl 2-oxy-2-methylpropionate, methyl 2-methoxy- Monooximonocarboxylic acid alkyl esters of 2-alkoxy-2-methylpropionic acid alkyls such as ethyl methyl propionate; Esters such as ethyl 2-hydroxypropionate, ethyl 2-hydroxy-2-methylpropionate, ethyl hydroxyacetate and methyl 2-hydroxy-3-methylbutanoate; And ethyl ketone esters such as ethyl pyruvate. In addition, there may be mentioned compounds such as N-methylformamide, N, N-dimethylformamide, N-methylformanilide, N-methylacetamide, But are not limited to, acetamide, N-methylpyrrolidone, dimethylsulfoxide, benzyl ethyl ether, dihexyl ether, acetyl acetone, isophorone, caproic acid, caprylic acid, And high boiling solvents such as benzyl, ethyl benzoate, diethyl oxalate, diethyl maleate,? -Butyrolactone, ethylene carbonate, propylene carbonate, and phenyl cellosolve acetate.

In view of compatibility and reactivity among these solvents, glycol ethers such as ethylene glycol monoethyl ether; Ethylene glycol alkyl ether acetates such as ethyl cellosolve acetate; Esters such as ethyl 2-hydroxypropionate; Diethylene glycol such as diethylene glycol monomethyl ether; Propylene glycol alkyl ether acetates such as propylene glycol methyl ether acetate and propylene glycol propyl ether acetate can be used. In consideration of the solubility of the dye, cyclohexanone is contained in an amount of 10 to 80 parts by weight based on 100 parts by weight of the total amount of the solvent It is possible. As the solvent, any one of them may be used alone, or a mixture of two or more of them may be used.

The amount of the solvent used is an amount of the remainder, preferably 20 to 90 wt%. When the content of the solvent is within the above range, the coating property of the photosensitive resin composition for a color filter is excellent, and flatness can be maintained in a film having a thickness of 1 占 퐉 or more.

(E) Pigment or dye

In addition to the dye-polymer composite (A), the photosensitive resin composition for a color filter may further include a pigment, a dye, or a combination thereof as a coloring agent for color characteristics.

As the pigment, pigments having hues such as red, green, blue, yellow, and violet can be used. These include condensed polycyclic pigments such as anthraquinone pigments and perylene pigments, phthalocyanine pigments, and azo pigments. Any one of these pigments may be used alone, or two or more pigments may be used in combination. It can be used in combination of two or more for adjustment of maximum absorption wavelength and adjustment of cross point and crosstalk.

The pigment may be prepared from a pigment dispersion dispersed in a solvent and included in a photosensitive resin composition for a color filter.

A dispersant may be used if necessary in order to uniformly disperse the pigment component in the pigment dispersion. For this purpose, nonionic, anionic or cationic dispersing agents can be used. For example, polyalkylene glycols and esters thereof , A polyoxyalkylene, a polyhydric alcohol ester alkylene oxide adduct, an alcohol alkylene oxide adduct, a sulfonic acid ester, a sulfonic acid salt, a carboxylic acid ester, a carboxylate, an alkylamide alkylene oxide adduct, and an alkylamine. These dispersants may be used singly or in combination of two or more.

Further, by further using the above-mentioned first acrylic resin containing a carboxyl group in addition to the dispersant, the stability of the pigment dispersion can be improved and the patterning of pixels can also be improved.

The primary particle diameter of the pigment may be 10 to 80 nm, preferably 10 to 70 nm. When the primary particle diameter is within the above-mentioned particle diameter range, the stability in the pigment dispersion is excellent and there is no fear of deterioration of the resolution of the pixel, which is preferable.

Examples of the dyes include anthraquinone compounds, cyanine compounds, mesocyclic compounds, azapphyrin compounds, pyrrolopyrrole compounds, diazo compounds, carbonium compounds, acridine compounds, thiazole compounds, Nonane compounds, methine compounds, quinoline compounds, and the like.

When a dispersion in which the pigment and the dye are mixed is used, the content ratio of the pigment to the dye may be 1: 9 to 9: 1. It is possible to have a high luminance and a high contrast ratio within the range and to express a desired color characteristic.

The amount of the pigment or dye to be used may be from 0.1 to 40% by weight based on the total amount of the photosensitive resin composition for a color filter.

(F) Acrylic binder resin

In addition to the dye-polymer composite (A), the photosensitive resin composition for a color filter may further include an acrylic binder resin for improving adhesiveness with a substrate, heat resistance, and chemical resistance.

The acrylic binder resin may contain a first ethylenic unsaturated monomer 　 And a second ethylenically unsaturated monomer copolymerizable therewith, and is a resin comprising at least one acrylic repeating unit.

The first ethylenically unsaturated monomer is an ethylenically unsaturated monomer containing at least one carboxyl group, and specifically may be selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid, and combinations thereof.

The weight ratio of the first ethylenically unsaturated monomer may be 5 to 50 wt%, and may be 10 to 40 wt% based on the total amount of the acrylic binder resin. Examples of the second ethylenic unsaturated monomer include an alkenyl aromatic monomer, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, a carboxylic acid vinyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a vinyl cyanide Compounds, unsaturated amide compounds, and combinations thereof.

Representative examples of the alkenyl aromatic monomer include styrene,? -Methylstyrene, vinyltoluene, vinylbenzyl methyl ether, and the like; Representative examples of the above unsaturated carboxylic acid ester compound include monomers such as methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate, 2-hydroxyethyl acrylate, 2- Benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-hydroxybutyl methacrylate, 2-hydroxybutyl methacrylate, And the like; Representative examples of the unsaturated carboxylic acid aminoalkyl ester compound include 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate and the like; Typical examples of the carboxylic acid vinyl ester compound include vinyl acetate and vinyl benzoate; Representative examples of the unsaturated carboxylic acid glycidyl ester compound include glycidyl acrylate, glycidyl methacrylate and the like; Representative examples of the vinyl cyanide compound include acrylonitrile, methacrylonitrile and the like; Representative examples of the unsaturated amide compound include, but are not limited to, acrylamide, methacrylamide, and the like. These unsaturated second ethylenically unsaturated monomers may be used singly or in combination of two or more thereof.

The first ethylenically unsaturated monomer 　 Specific examples of the acrylic binder resin including the second ethylenic unsaturated monomer include methacrylic acid / benzyl methacrylate copolymer, methacrylic acid / benzyl methacrylate / styrene copolymer, methacrylic acid / benzyl methacrylate Methacrylic acid / benzyl methacrylate / styrene / 2-hydroxyethyl methacrylate copolymer, but are not limited thereto, and they may be used singly or in combination of two or more. More than two species may be used in combination.

The weight average molecular weight (Mw) of the acrylic binder resin may be 3,000 to 150,000, and may be 5,000 to 50,000. When the weight average molecular weight of the acrylic binder resin is in the range described above, it has excellent adhesion with a substrate, good physical and chemical properties, and good viscosity and good dispersibility.

The acrylic binder resin has the greatest influence on the resolution of the pixels in the photosensitive resin composition for a color filter. For example, in the case of the methacrylic acid / benzyl methacrylate copolymer, the resolution of the pixel is significantly changed depending on the acid value and the weight average molecular weight. For example, when the content ratio of methacrylic acid / benzyl methacrylate is 25/75 (w / w), the acid value is from 15 to 120 mgKOH / g, and the weight average molecular weight is from 3,000 to 150,000, excellent pixel resolution can be obtained .

The amount of the acrylic binder resin to be used may be 1 to 20% by weight based on the total amount of the photosensitive resin composition for a color filter. When the content of the acrylic binder resin is in the range of 1 to 20% by weight, adhesion with the substrate is good, a uniform film thickness can be formed, and excellent post-color filter processes such as film strength, heat resistance, Do. In addition, the crosslinking property is appropriate and the surface smoothness is excellent.

The acrylic binder resin may be used in combination with a cadene resin.

(G) Other additives

The photosensitive resin composition for a color filter of the present invention may contain other additives in addition to the components (A) to (F).

The additive may further include a dispersant as described above so that the components such as pigment or dye are uniformly dispersed in the solvent (D). Examples of the dispersing agent include polyalkylene glycols and esters thereof, polyoxyalkylene, polyhydric alcohol ester alkylene oxide adducts, alcohol alkylene oxide adducts, sulfonic acid esters, sulfonic acid salts, carboxylic acid esters, Amide alkylene oxide adducts, alkyl amines, and the like, or a combination of two or more thereof. The dispersant may be included in an amount of 10 to 20 parts by weight based on 100 parts by weight of the pigment.

In addition, the ink composition may further include a coating improving agent such as a silicone or fluorine-based agent or an adhesion improver to improve the coating ability and the defoaming property, if necessary. The coating improving agent and the adhesion improver may be contained in an amount of 0.01 to 1% by weight based on the total amount of the photosensitive resin composition for a color filter.

In order to prevent spots and spots during coating and to prevent the formation of residue due to leveling characteristics and unexposed phenomena, epoxy compounds; Malonic acid; 3-amino-1,2-propanediol; A silane-based coupling agent having a vinyl group or (meth) acryloxy group; Leveling agents; Silicone surfactants; Fluorine surfactants; A radical polymerization initiator, and the like. The amount of these additives to be used can be easily controlled depending on the desired physical properties.

Examples of the epoxy compound include phenol novolak epoxy resin, tetramethyl non-phenyl epoxy resin, bisphenol A type epoxy resin, alicyclic epoxy resin, and ortho-cresol novolak resin. The epoxy compound may be present in an amount of 0.01 to 10% by weight based on the total amount of the photosensitive resin composition for a color filter. When the content of the epoxy compound is within the above range, storage stability and process margin are excellent.

Specific examples of the silane-based coupling agent include vinyltrimethoxysilane, vinyltris (2-methoxyethoxysilane), 3-glycidoxypropyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) Ethyl trimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane and the like.

The silane-based coupling agent may be 0.01 to 2% by weight based on the total amount of the photosensitive resin composition for a color filter. When the content of the silane-based coupling agent is within the above range, the adhesive strength, storage stability and coating property are excellent.

Examples of the silicone surfactant include a surfactant having a siloxane bond. Specific product names include DC3PA, SH7PA, DC11PA, SH21PA, SH28PA, 29SHPA, SH30PA from Toray Silicone Co., Ltd.; SH8400 from Toray Silicone, a polyester-modified silicone oil; KP321, KP322, KP323, KP324, KP326, KP340, GF of Shin-Etsu Silicones; TSF4445, TSF4446, TSF4452, TSF4460 from Toshiba Silicones; And the like.

Examples of the fluorine-based surfactant include a surfactant having a fluorocarbon chain. Specific product names include Fluoride FC430 and Fluoride FC431 from Sumitomo 3M Co., Ltd.; Mecha Pack F171, Mega Pack F172, Mega Pack F173, Mega Pack F177, Mega Pack F183, Mega Pack F470, Mega Pack F475, Mega Pack R30, manufactured by Dainippon Ink & Chemicals Incorporated; FOOT EF301, EF TOP EF303, EF TOP EF351, and EF TOP EF352 of Shin-Akita Chemical Co., Saffron S381, Saffron S382, Saffron SC101, and Saffron SC105 from Asahi Glass Co., Ltd .; E5844 of Daikin Fine Chemical Co., Ltd.; And the like.

The silicon surfactant and the fluorinated surfactant may be used alone or in combination of two or more.

According to another embodiment, there is provided a color filter manufactured using the above-described photosensitive resin composition for a color filter.

The color filter can be applied to various electronic devices such as a liquid crystal display device, an organic light emitting device, and an image sensor.

The above photosensitive resin composition for a color filter is coated on a glass substrate coated with a thickness of 500 ANGSTROM to 1,500 ANGSTROM by a suitable method such as spin coating or slit coating, Mu m. After the application, light is irradiated to form a pattern necessary for the color filter. When the coated layer irradiated with light is treated with an alkali developing solution, the unexposed portion of the coated layer is dissolved and a pattern necessary for the color filter is formed. Further, in the above process, the image pattern obtained by the development may be further heated or cured by actinic radiation or the like to further improve crack resistance, solvent resistance, and the like.

Hereinafter, the present invention will be described more specifically with reference to preferred embodiments and comparative examples of the present invention. However, the following examples are for illustrative purposes only and are not intended to limit the invention.

Synthetic example  1: Dye- Polymer  Synthesis of complex

In a flask equipped with a cooling tube and a stirrer, a compound represented by the following formula (6), benzyl methacrylate, methacrylic acid and styrene were respectively fed in a weight ratio of 40: 25: 15: 20, Azobis (2,4-dimethylvaleronitrile) was added in an amount of 6 parts by weight based on 100 parts by weight of the total amount of the monomers. Subsequently, 300 parts by weight of propylene glycol monomethyl ether acetate (PGMEA, solvent) was added to 100 parts by weight of the total amount of the initiator and the monomer, and then stirring was started slowly in a nitrogen atmosphere. The reaction solution was heated to 90 ° C and stirred for 10 hours to obtain a dye-polymer complex solution.

The solid concentration of the dye-polymer complex solution obtained in the above manner was 20% by weight and the weight average molecular weight was 8,600. Here, the weight average molecular weight is an average molecular weight in terms of polystyrene measured by gel permeation chromatography (GPC).

[Chemical Formula 6]

Using the dye-polymer composite prepared above, a green pigment dispersion (a) was prepared with the compositions shown in Table 1 below.

Green pigment dispersion (a) content [%] The dye-polymer complex prepared in Synthesis Example 1 13.5 G58 (DIC) 14.5 Dispersant (BYK, 6919) 3.5 PGMEA 68.5

Preparation of Photosensitive Resin Composition for Color Filter

( Example  One)

After dissolving the photopolymerization initiator in the solvent shown in Table 2 and stirring at room temperature for 2 hours, an acrylic binder resin containing a structural unit represented by the following formula (7) and a photopolymerizable monomer were added thereto and stirred at room temperature for 2 hours. Then, a green pigment dispersion (c) was added to the above-mentioned mixture solution as shown in the green pigment dispersion (a) prepared in Synthesis Example 1 and as shown in Table 2, stirred at room temperature for 1 hour, Gamma-glycidoxypropyltrimethoxysilane (S-510, manufactured by Chisso) was added and stirred at room temperature for 1 hour. Subsequently, the product was filtered three times to remove impurities, thereby preparing a photosensitive resin composition for a color filter. The component contents in the above-prepared photosensitive resin composition for a color filter are shown in Table 2 below.

(7)

(Example 2)

As shown in the following Table 2, except that the green pigment dispersion (c) was used instead of the green pigment dispersion, a yellow dye solution containing a yellow dye having the structure of the following formula (8) was used, To prepare a photosensitive resin composition for a filter.

[Chemical Formula 8]

　　

　　

(R = -SO ₃ Na)

(Comparative Examples 1 and 2)

As shown in the following Table 2, instead of using the green pigment dispersion (a), the green pigment dispersion (b) was used in the following components and contents to prepare a photosensitive resin composition for a color filter.

(상기 표 2에서, '라이트큐어 1000'은 SMS社의 신나밀 아크릴레이트(cinnamyl acrylate)의 상품명임)

(In Table 2, 'Light Cure 1000' is a trade name of cinnamyl acrylate manufactured by SMS Corporation)

Formation of color filter pattern

The photosensitive resin composition for color filters of Examples 1 to 4 and Comparative Examples 1 and 2 was applied to a transparent circular glass substrate (bare glass) to which nothing was applied by using a spin-coater (K-Spin 8, Each having a thickness of 3 탆. After soft-baking at 80 ° C for 150 seconds using a hot-plate, exposure was performed at an output power of 60 mJ using an exposure machine (I10C, manufactured by Nikon), and 1 wt% Aqueous solution of potassium hydroxide at a developing temperature of 25 占 폚, a developing time of 60 seconds, a washing time of 60 seconds, and a spin-drying of 25 seconds to develop a plurality of color filter patterns.

≪ Evaluation of physical properties &

The photosensitive resin composition for color filters prepared in Examples 1 and 2 and Comparative Examples 1 and 2 was coated on a glass substrate having a thickness of 1 mm and washed to a thickness of 1 to 3 μm and dried on a hot plate at 90 ° C for 2 minutes To give a coating film. Subsequently, the coated film was exposed using a high-pressure mercury lamp having a main wavelength of 365 nm, and then dried in a hot-air circulation type drying oven at 200 ° C for 5 minutes to form a pixel layer.

The color coordinates (x, y) and luminance (Y) of the prepared pixel layer were measured using a spectrophotometer (MCPD3000, Otsuka electronic Co.). Further, after measuring the amount of light when the polarizing plate was closed and when the polarizing plate was closed by using a contrast ratio tester (Contrast tester CT-1, manufactured by Tsubosaka), the contrast ratio was calculated according to the following equation (1). The results are shown in Table 3 below.

[Equation 1]

Contrast ratio = L _Open / L _Close

Gx Gy Y (luminance) Contrast ratio Example 1 0.295 0.560 66.54 18187 Example 2 0.295 0.560 67.28 16925 Comparative Example 1 0.295 0.560 66.51 15000 Comparative Example 2 0.295 0.560 66.57 14440

As shown in Table 3, the pixel layers prepared using the photosensitive compositions of Examples 1 and 2 had excellent brightness and contrast ratio as compared with the pixel layers prepared using the photosensitive resin composition for color filter according to Comparative Examples 1 and 2 Respectively.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is possible.

Claims (12)

(A) a dye-polymer complex comprising a structural unit represented by the following formula (1);
(B) an acrylic photopolymerizable monomer;
(C) a photopolymerization initiator; 　 And
(D) Solvent
A photosensitive resin composition for a color filter comprising :
[Chemical Formula 1]

In Formula 1,
A ₁ is hydrogen or a methyl group,
A ₂ is represented by the following formula (2)
(2)

In Formula 2,
M is Cu, Zn, In, Al, Zr or Mg,
R ¹ to R ¹⁶ (CH ₂ ) _n O-, wherein n is an integer of 1 to 10, and - (CH ₂ ) _n -, wherein n is an integer of 1 to 10, and one of R 1 and _{R 2} is -O-, -COO-, -OCO-, -O O- may be replaced with a halogen atom), and the remaining are independently a hydrogen atom, -F, -Br or -Cl. The method according to claim 1,
Wherein the structural unit represented by the formula (1) is contained in an amount of 1 to 50 mol% based on the total amount of the dye-polymer conjugate (A). The method according to claim 1,
(A) from 0.5 to 40% by weight of the dye-polymer complex;
(B) 0.5 to 20% by weight of the acrylic photopolymerizable monomer;
(C) 0.1 to 10% by weight of the photopolymerization initiator; And
(D)
Wherein the photosensitive resin composition is a photosensitive resin composition for a color filter. The method according to claim 1,
Wherein the dye-polymer conjugate (A) has a weight average molecular weight (Mw) of 3,000 to 20,000. The method according to claim 1,
The dye-polymer composite (A) comprises at least one of the structural units represented by the following formulas (3) to (5):
(3)

[Chemical Formula 4]

[Chemical Formula 5]

In the above formulas (3) to (5)
R ¹⁷ , R ¹⁸ , R ¹⁹ , R ²¹ , R ²³ is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C30 alkylaryl group, a substituted or unsubstituted C6 to C30 heteroaryl group, Combinations thereof,
R ²⁰ represents a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, -CO-R ²⁵ -COOH (R ²⁵ represents a substituted or unsubstituted C1 to C30 alkylene group, A substituted C1 to C30 alkoxysilyl group, or a combination thereof,
R ²² is -COOH or -CONHR ²⁶ wherein R ²⁶ is a substituted or unsubstituted C1 to C30 alkyl group or a substituted or unsubstituted C6 to C30 aryl group,
R < ²⁴ > is -COOH,
R ²² and R ²⁴ are fused together to form a ring,
and m is an integer of 0 to 5. The method according to claim 1,
The dye-polymer conjugate (A) comprises the compounds represented by formulas (3) to (5) as o, p and q moles, wherein o, p and q satisfy 0? O? 70, 0? P? , Provided that o, p and q are not 0 at the same time. The method according to claim 1,
Wherein the structural unit represented by the above Chemical Formulas 3 to 5 is contained in an amount of 0.1 to 50% by weight based on the total amount of the dye-polymer composite (A). The method according to claim 1,
A pigment, a dye, or a combination thereof. 9. The method of claim 8,
Wherein the pigment, the dye or a combination thereof is contained in an amount of 1 to 40% by weight based on the total amount of the photosensitive resin composition. The method according to claim 1,
A photosensitive resin composition for a color filter, which further comprises an acrylic binder resin. 11. The method of claim 10,
Wherein the acrylic binder resin is contained in an amount of 1 to 20% by weight based on the total amount of the photosensitive resin composition. A color filter produced by using the photosensitive resin composition for a color filter according to any one of claims 1 to 11.