JP6108200B2 - Colored resin composition and color filter - Google Patents

Description

  The present invention relates to a colored resin composition and a color filter, and more particularly to a colored resin composition for a photoresist containing a dye and a color filter having a colored pixel portion formed by the colored resin composition.

  In recent years, it has been desired to further increase the transmittance and color purity of color filters by further increasing the definition of image display devices and reducing the power consumption of backlights. For these realizations, various studies have been conducted on materials and manufacturing methods of color filters.

  In particular, with respect to the color material that is a material of the color filter, many studies have been made so far in order to influence the optical characteristics of the color filter. The pigment is excellent in heat resistance and light resistance as compared with the dye, but is often inferior to the dye in terms of transmittance, and it has been difficult to obtain a desirable transmittance. On the other hand, although the dye is superior in terms of transmittance as compared with the pigment, it has low heat resistance and light resistance, and it has been difficult to put it to practical use when it undergoes a high temperature process during the production process. Furthermore, light resistance may become a problem when used for a long period of time. Therefore, there has been a demand for the development of a color material that is excellent in heat resistance and light resistance while realizing high transmittance.

  To date, various proposals have been made for pigments and dyes used as color materials that are materials for color filters in order to solve these problems. For example, it has been proposed to use a dye in which an acidic site of a specific acidic dye is protected by chemical synthesis (see, for example, Patent Document 1). However, changing the chemical structure of the dye by chemical synthesis requires design for each type of dye, leading to an increase in equipment and cost.

  Accordingly, development of a dye-containing colored resin composition having improved heat resistance and light resistance without changing the structure of the dye itself by chemical synthesis is eagerly desired.

JP 2010-254964 A

  The present invention has been made in view of the above-described background art, and its purpose is to provide a colored resin for a photoresist containing a dye, which has improved heat resistance and light resistance without changing the structure of the dye itself by chemical synthesis. The object is to provide a color filter having a colored pixel portion formed of the composition and the colored resin composition.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have used the above-mentioned problems by using together a dye having an acidic group and a resin composition having a substituent capable of reacting with the acidic group of the dye. It was found that can be solved. The present invention has been completed based on such findings.

That is, according to one aspect of the present invention,
A dye having an acidic group;
A colored resin composition comprising an acid group of the dye and a resin composition having a substituent capable of causing an acid-base interaction is provided.

  In the embodiment of the present invention, the substituent capable of causing an acid-base interaction with the acid group of the dye is preferably at least one of a nitrogen-containing group and an epoxy group.

  In the aspect of the present invention, the nitrogen-containing group is preferably at least one selected from the group consisting of an amino group, an amide group, and an imidazole group.

  In the aspect of the present invention, the acidic group is preferably at least one selected from the group consisting of a sulfonyl group, a carboxyl group, a phenolic hydroxyl group, and a phosphone group.

  In the aspect of the present invention, it is preferable that the resin composition further has a substituent having a radical scavenging ability.

  In an aspect of the present invention, the substituent having a radical scavenging ability includes a hindered phenol compound, a hindered amine compound, an aromatic amine compound, a naphthylamine compound, a phenylenediamine compound, a hydroxyamine compound, and an aromatic compound. It is preferably at least one selected from the group consisting of hydrocarbons.

  In the aspect of the present invention, the substituent having the radical scavenging ability is preferably at least one selected from the group consisting of styrene and phenol.

  In the embodiment of the present invention, it is preferable that the resin composition comprises a binder resin and an additive.

  In the aspect of the present invention, the binder resin preferably has a substituent capable of causing an acid-base interaction with the acidic group of the dye and a substituent having a radical scavenging ability.

  In the aspect of this invention, it is preferable that the said colored resin composition further contains a pigment.

  In an embodiment of the present invention, the pigment is at least one selected from the group consisting of Pigment Blue 15, Pigment Blue 15: 3, Pigment Blue 15: 4, Pigment Blue 15: 6, Pigment Blue 60, and Pigment Violet 23. Preferably it is a seed.

  According to another aspect of the present invention, there is provided a color filter having a colored pixel portion formed from the colored resin composition.

  According to the present invention, a colored resin composition for a photoresist containing a dye having improved heat resistance and light resistance without changing the structure of the dye itself by chemical synthesis, and a colored pixel formed by the colored resin composition A color filter having a portion can be provided.

Colored resin composition The colored resin composition according to the present invention includes a dye having an acidic group and a resin composition having a substituent capable of causing an acid-base interaction with the acidic group of the dye. Examples of the acid-base interaction include reaction and adsorption. An acid-base interaction occurs between an acidic group (for example, a sulfonyl group) in the dye molecule and a base (for example, an amino group) in the resin composition, and the acidic group in the dye molecule is fixed to the base in the resin composition; Presumed to stabilize. Such a stabilized state of the dye and the resin composition is considered to have a structure in which the dye is affected by radicals and other components to prevent the structure from being destroyed. Thereby, the acidic group of dye can be protected irrespective of chemical synthesis. A color filter using such a colored resin composition can improve heat resistance and light resistance. Hereinafter, each component which comprises a colored resin composition is demonstrated.

（式中、Ｒ(a)は染料の構造を示す。） For example, when the acidic group in the dye is a sulfonyl group and the substituent capable of causing an acid-base interaction with the acidic group of the dye in the resin composition is an epoxy group, the reaction between them is represented by the following formula 1. be able to.
Formula 1:

(In the formula, R (a) represents the structure of the dye.)

（式中、Ｒ(a)は染料の構造を示す。） For example, when the acidic group in the dye is a sulfonyl group and the substituent capable of causing an acid-base interaction with the acidic group of the dye in the resin composition is an amino group, the reaction between them is represented by the following formula 2. be able to.
Formula 2:

(In the formula, R (a) represents the structure of the dye.)

The dye dye is not particularly limited as long as it has an acidic group. An acidic group is a group that releases protons when dissolved in water. The acidic group is preferably at least one selected from the group consisting of a sulfonyl group, a carboxyl group, a phenolic hydroxyl group, and a phosphone group. As the dye having an acidic group, for example, xanthene, anthraquinone, or phthalocyanine is used as a basic skeleton, and the dye having a sulfonyl group can be redissolved in a solvent while achieving the demand for higher brightness. It is preferable from the standpoint that it is possible to produce a coating film excellent in heat resistance and alkali developability, excellent in heat resistance and light resistance, and can easily achieve desired chromaticity.

  Examples of the dye having an acidic group include a dye in which at least one of a sulfonate such as an acid dye having a sulfonate and a direct dye is converted into a sulfonyl group in addition to an acid dye having a sulfonyl group and a direct dye. Can be mentioned. By using a dye having an acidic group such as a sulfonyl group in combination with a binder resin described later, an acid-base interaction occurs between the dye and the binder resin, making the structure of the dye difficult to break, and generated radicals. It is possible to prevent the dye structure from being broken and fading under the influence of the above.

  Since PGMEA is suitable as a solvent for the curable resin composition, it is preferable to select and use a dye that does not substantially dissolve in PGMEA or has a sparingly soluble sulfonyl group among the dyes. Further, when the dye has a plurality of ionic groups, as long as there is at least one sulfonyl group per molecule, the other ionic groups may be dye salts that form a salt with other ionic compounds. In this case, the other ionic compound may be colored or colorless, an organic compound, or an inorganic compound.

  Examples of the dye having a sulfonyl group and / or sulfonate having xanthene, anthraquinone, or phthalocyanine as a basic skeleton include, for example, Acid Red 52, Acid Red 289 as an xanthene dye, and Acid Red 80 as an anthraquinone dye. Acid Green 25, Acid Green 27, Acid Blue 25, Acid Blue 78, Acid Blue 112, Acid Blue 182, Acid Violet 34, Acid Violet 43, and phthalocyanine dyes include Direct Blue 86, Direct Blue 87, and Acid Blue 249. Etc. In addition, when using the dye which has a sulfonate, at least 1 of a sulfonate is converted into a sulfonyl group in advance or at the time of dye dispersion liquid preparation, and it is good to make it the dye which has a sulfonyl group. Among these, at least one sulfonate salt of at least one dye selected from the group consisting of Acid Red 289, Acid Bio Red 43, Acid Green 25, and Direct Blue 86 is a dye converted to a sulfonyl group. However, it is more preferable from the viewpoint that a coating film excellent in re-solubility in a solvent and excellent in heat resistance and light resistance can be produced while achieving the demand for higher brightness.

  The colored resin composition according to the present invention may be used singly or in combination of two or more dyes. In the colored resin composition according to the present invention, the content of the dye is not particularly limited. Usually, the content of the dye is preferably in the range of 1 to 40% by weight, more preferably 1 to 20% by weight, based on the total amount of the colored resin composition.

  The acid value (a) of the dye having a sulfonyl group is not particularly limited as long as it is larger than 0, but is 10 to 300 mg KOH / g in order to cause stable acid-base interaction between the dye and the binder resin. Is preferred. The acid value refers to the number of mg of potassium hydroxide required to neutralize the acid component contained in 1 g of the sample, and can be determined by measuring by the method defined in JIS-K0070.

The resin composition is not particularly limited as long as it has a substituent capable of causing an acid-base interaction with an acid group of the dye, and a conventionally known resin composition for photoresist can be used. The resin composition preferably contains a binder resin and an additive, and any of the binder resin and the additive may have a substituent capable of causing an acid-base interaction with an acidic group of the dye. The various additives may appropriately include conventionally known additives as necessary within the range in which the object of the present invention is not impaired. Examples of the additive include a polymerization initiator, a dispersant, an antioxidant, a sensitizer, a polymerization terminator, a chain transfer agent, a leveling agent, a plasticizer, a surfactant, an antifoaming agent, a silane coupling agent, Examples include ultraviolet absorbers and adhesion promoters.

  The substituent capable of causing an acid-base interaction with the acid group of the dye is preferably at least one of a nitrogen-containing group and an epoxy group. Furthermore, the nitrogen-containing group is preferably at least one selected from the group consisting of an amino group, an amide group, and an imidazole group.

  The resin composition preferably has a substituent having radical scavenging ability. Examples of the substituent having a radical scavenging ability generally include phenol compounds, amine compounds, sulfur compounds, phosphate compounds, acrylate compounds, aromatic hydrocarbons, and the like. Among these, at least one selected from the group consisting of hindered phenol compounds, hindered amine compounds, aromatic amine compounds, naphthylamine compounds, phenylenediamine compounds, hydroxyamine compounds, and aromatic hydrocarbons. Preferably, it is at least one selected from the group consisting of styrene and phenol. When the resin composition further has a substituent having a radical scavenging ability, the heat resistance and light resistance of the colored resin composition can be further improved.

As the binder resin , a conventionally known curable resin for photoresist can be used, and it is preferable to use a thermosetting compound having an unsaturated double bond. For example, when a binder resin having an epoxy group is used for the resin composition, the binder resin may be a compound obtained by reacting an epoxy compound with acrylic acid or methacrylic acid. In this case, specific examples of the epoxy compound used for this reaction include bis (4-hydroxyphenyl) ketone and bis (4-hydroxy-3,5-dimethylphenyl) ketone as the epoxy epoxy bisphenol component as an aromatic epoxy. Bis (4-hydroxy-3,5-dichlorophenyl) ketone, bis (4-hydroxyphenyl) sulfone, bis (4-hydroxy-3,5-dimethylphenyl) sulfone, bis (4-hydroxy-3,5-dichlorophenyl) ) Sulfone, bis (4-hydroxyphenyl) hexafluoropropane, bis (4-hydroxy-3,5-dimethylphenyl) hexafluoropropane, bis (4-hydroxy-3,5-dichlorophenyl) hexafluoropropane, bis (4 -Hydroxyphenyl) dimethylsilane, bi (4-hydroxy-3,5-dimethylphenyl) dimethylsilane, bis (4-hydroxy-3,5-dichlorophenyl) dimethylsilane, bis (4-hydroxyphenyl) methane, bis (4-hydroxy-3,5-dichlorophenyl) ) Methane, bis (4-hydroxy-3,5-dibromophenyl) methane, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxy-3,5-dimethylphenyl) propane, 2,2-bis (4-hydroxy-3,5-dichlorophenyl) propane, 2,2-bis (4-hydroxy-3-methylphenyl) propane, 2,2-bis (4-hydroxy-3-chlorophenyl) propane Bis (4-hydroxyphenyl) ether, bis (4-hydroxy-3,5-dimethylphenyl) ester Ter, bis (4-hydroxy-3,5-dichlorophenyl) ether, 9,9-bis (4-hydroxyphenyl) fluorene, 9,9-bis (4-hydroxy-3-methylphenyl) fluorene, 9 , 9-bis (4-hydroxy-3-chlorophenyl) fluorene, 9,9-bis (4-hydroxy-3-bromophenyl) fluorene, 9,9-bis (4-hydroxy-3-fluorophenyl) fluorene, 9 , 9-bis (4-hydroxy-3-methoxyphenyl) fluorene, 9,9-bis (4-hydroxy-3,5-dimethylphenyl) fluorene, 9,9-bis (4-hydroxy-3,5-dichlorophenyl) ) Fluorene, 9,9-bis (4-hydroxy-3,5-dibromophenyl) fluorene, and 4,4′-bipheno Le, there is an epoxy resin containing a 3,3'-biphenol and the like. Furthermore, a phenol novolak type epoxy, a cresol novolak type epoxy, a polycarboxylic acid glycidyl ester, a polyol polyglycidyl ester, an aliphatic or alicyclic epoxy resin, and an amine epoxy resin are also included. By using such a compound of epoxy resin and acrylic acid, a cured product excellent in moisture resistance, transparency, surface curability, and chemical resistance can be formed.

  Further, when a binder resin having a nitrogen-containing group is used in the resin composition, the nitrogen-containing group is not particularly limited as long as it has a group containing nitrogen such as an amino group, an amide group, and an imidazole group. Using a block polymer containing a block unit composed of a repeating unit having a tertiary amine in the resin achieves the requirement for high brightness, and is excellent in re-solubility in a solvent and alkali developability, and heat resistance It is preferable from the viewpoint that a coating film having excellent properties and light resistance can be produced, and that desired chromaticity can be easily achieved.

  The block part composed of a repeating unit having a tertiary amine is a part having an affinity for the dye and a function of causing an acid-base interaction between the tertiary amine of the block polymer and the sulfonic acid group of the dye. . By including the block part which consists of a repeating unit which has a tertiary amine in a polymer, stability of dye improves and heat resistance and light resistance are improved.

（式（３）中、Ｒ^１は、水素原子又はメチル基、Ａは、直接結合又は２価の連結基、Ｒ^２は、炭素数１〜８のアルキレン基、−［ＣＨ（Ｒ^６）−ＣＨ（Ｒ^７）−Ｏ］ｘ−ＣＨ（Ｒ６）−ＣＨ（Ｒ^７）−又は−［（ＣＨ_２）ｙ−Ｏ］ｚ−（ＣＨ_２）ｙ−で示される２価の有機基、Ｒ^３及びＲ^４は、それぞれ独立に、置換されていてもよい鎖状及び／又は環状の炭化水素基を表すか、Ｒ３及びＲ４が互いに結合して環状構造を形成する。Ｒ^６及びＲ^７は、それぞれ独立に水素原子又はメチル基である。ｘは１〜１８の整数、ｙは１〜５の整数、ｚは１〜１８の整数を示す。） Hereinafter, the block part which consists of a repeating unit which has a tertiary amine is demonstrated. The repeating unit constituting the block polymer including a block portion composed of a repeating unit having a tertiary amine only needs to have a tertiary amine, and the tertiary amine may be contained in the side chain of the block polymer. , May constitute the main chain. The tertiary amine is preferably contained in the side chain of the block polymer from the viewpoint of excellent heat resistance and light resistance and improving re-solubility, and among them, the main chain skeleton is hardly thermally decomposed, and the heat resistance is high. From a high point, a structure represented by the following formula (3) is more preferable.
Formula 3:

(In the formula (3), ^{R 1} represents a hydrogen atom or a methyl group, A is a direct bond or a divalent linking group, ^{R 2} is an alkylene group having 1 to 8 carbon ^{atoms, - [CH (R 6)} - ^{CH (R 7) -O] x} -CH (R6) -CH (R 7) - or _{- [(CH 2) y-} O] z- (CH 2) y- 2 divalent organic group represented by, R ³ and R ⁴ each independently represents an optionally substituted chain and / or cyclic hydrocarbon group, or R ³ and R ⁴ are bonded to each other to form a cyclic structure, and R ⁶ and R ⁷ are And each independently represents a hydrogen atom or a methyl group, x represents an integer of 1 to 18, y represents an integer of 1 to 5, and z represents an integer of 1 to 18.)

（式（４）中、Ｒ^１は、水素原子又はメチル基、Ｒ^２は、炭素数１〜８のアルキレン基、−［ＣＨ（Ｒ^６）−ＣＨ（Ｒ^７）−Ｏ］ｘ−ＣＨ（Ｒ^６）−ＣＨ（Ｒ^７）−又は−［（ＣＨ_２）ｙ−Ｏ］ｚ−（ＣＨ_２）ｙ−で示される２価の有機基、Ｒ^３及びＲ^４は、それぞれ独立に、置換されていてもよい鎖状及び／又は環状の炭化水素基を表すか、Ｒ^３及びＲ^４が互いに結合して環状構造を形成する。Ｒ^６及びＲ^７は、それぞれ独立に水素原子又はメチル基である。ｘは１〜１８の整数、ｙは１〜５の整数、ｚは１〜１８の整数を示す。） Examples of the divalent linking group A in the above formula (3) include, for example, an alkylene group having 1 to 10 carbon atoms, an arylene group, a —CONH— group, a —COO— group, an ether group having 1 to 10 carbon atoms (—R '-OR "-: R' and R" each independently represents an alkylene group) and combinations thereof. Among them, A is preferably a —COO— group because of the heat resistance and solubility of the obtained polymer in PGMEA, and a relatively inexpensive material, and A is a block portion composed of a repeating unit having a tertiary amine. It is preferable that the repeating unit to be formed has a structure represented by the following formula (4).
Formula 4:

(In the formula (4), ^{R 1} is a hydrogen atom or a methyl group, ^{R 2} is an alkylene group having 1 to 8 carbon ^{atoms, - [CH (R 6)} -CH (R 7) -O] x-CH ( The divalent organic group represented by R ⁶ ) —CH (R ⁷ ) — or — [(CH ₂ ) y —O] z— (CH ₂ ) y —, R ³ and R ⁴ are each independently substituted. Represents a chain and / or cyclic hydrocarbon group which may be substituted, or R ³ and R ⁴ are bonded to each other to form a cyclic structure, and R ⁶ and R ⁷ are each independently a hydrogen atom or a methyl group X represents an integer of 1 to 18, y represents an integer of 1 to 5, and z represents an integer of 1 to 18.)

The divalent organic group R ² in the above formulas (3) and (4) is an alkylene group having 1 to 8 carbon atoms, — [CH (R ⁶ ) —CH (R ⁷ ) —O] x—CH (R ⁶⁾ -CH ^{(R 7)} - or _{- [(CH 2) y-} O] z- (CH 2) a y-. The alkylene group having 1 to 8 carbon atoms may be linear or branched, for example, methylene group, ethylene group, trimethylene group, propylene group, various butylene groups, various pentylene groups, various hexylenes. Groups, various octylene groups and the like. R ⁶ and R ⁷ are each independently a hydrogen atom or a methyl group. x is an integer of 1 to 18, preferably an integer of 1 to 4, more preferably an integer of 1 to 2, and y is an integer of 1 to 5, preferably an integer of 1 to 4, more preferably 2 or 3. is there. z is an integer of 1-18, preferably an integer of 1-4, more preferably an integer of 1-2. R ² is preferably an alkylene group having 1 to 8 carbon atoms from the viewpoint of dispersibility. Among them, R ² is more preferably a methylene group, an ethylene group, a propylene group, or a butylene group. Groups are more preferred.

Examples of the cyclic structure formed by combining R ³ and R ^{4 in the} above formulas (3) and (4) with each other include a 5- to 7-membered nitrogen-containing heterocyclic monocycle or a condensation of two of these. A condensed ring is mentioned. The nitrogen-containing heterocycle preferably has no aromaticity, more preferably a saturated ring. Specifically, examples of the cyclic structure of R ³ and R ^{4 in} the above formulas (3) and (4) include those of the following formula (5).
Formula 5:

The cyclic structure of R ³ and R ⁴ may further have a substituent. As a substituent between R ^{3 and} R ⁴ , an alkyl group having 1 to 3 carbon atoms which may have a substituent, an aralkyl group which may have a substituent, or a substituent is more preferable. It is a phenyl group which may have.

Examples of the chain hydrocarbon group in R ³ and R ⁴ include an alkyl group having 1 to 8 carbon atoms. Examples of the alkyl group having 1 to 8 carbon atoms include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, octyl group, isopropyl group, tert-butyl group, 2-ethylhexyl group and the like. Examples of the cycloalkyl group include a cyclopentyl group, a cyclohexyl group, and a cyclooctyl group. Of these, preferred are a methyl group and an ethyl group.

  The repeating unit represented by the above formula (3) is derived from (meth) acryloyloxypropyldimethylamine, (meth) acryloyloxyethyldimethylamine, meth) acryloyloxypropyldiethylamine, (meth) acryloyloxyethyldiethylamine and the like. However, the present invention is not limited to these.

  In the block part composed of repeating units having a tertiary amine, the repeating unit having a tertiary amine is preferably one containing three or more, making the dispersibility good, excellent heat resistance and light resistance, and curability. From the point of improvement, it is preferable to include 3 to 50, more preferably 6 to 40, and even more preferably 10 to 30. The repeating unit having a tertiary amine only needs to function as a dye affinity site, and may be composed of one kind or may contain two or more kinds of repeating units.

  Another block part can be suitably selected in the range which does not inhibit the affinity with the block part which consists of the repeating unit which has the said tertiary amine, and the said dye. The repeating unit constituting the other block part may be composed of one kind or may contain two or more kinds of repeating units.

  These binder resins may be used alone or in combination of two or more. In the resin composition of the present invention, the content of the binder resin is usually preferably in the range of 1 to 50% by weight, more preferably 1 to 20% by weight, based on the total amount of the resin composition.

（式（６）中、Ｒ^１は、水素原子又はメチル基、Ａは、直接結合又は２価の連結基、Ｒ^２は、炭素数１〜８のアルキレン基、−［ＣＨ（Ｒ^５）−ＣＨ（Ｒ^６）−Ｏ］ｘ−ＣＨ（Ｒ^５）−ＣＨ（Ｒ^６）−又は−［（ＣＨ_２）ｙ−Ｏ］ｚ−（ＣＨ_２）ｙ−で示される２価の有機基、Ｒ^３及びＲ^４は、それぞれ独立に、置換されていてもよい鎖状及び／又は環状の炭化水素基を表すか、Ｒ^３及びＲ^４が互いに結合して環状構造を形成する。Ｒ^５及びＲ^６は、それぞれ独立に水素原子又はメチル基である。ｘは１〜１８の整数、ｙは１〜５の整数、ｚは１〜１８の整数を示す。） A monomer having an ethylenically unsaturated double bond and a tertiary amine can also be used. A monomer having an ethylenically unsaturated double bond and a tertiary amine (hereinafter, also referred to as “monomer”) which is a copolymer component of the graft copolymer is an ethylenically unsaturated double bond and a tertiary amine. There is no particular limitation as long as it has. The tertiary amine serves as a site where the sulfonic acid group of the dye has a function of causing an acid-base interaction. A tertiary amine is preferred from the viewpoint of storage stability of the curable resin composition and heat resistance during post-baking. Among these, from the point that it is possible to form a coating film that is excellent in re-solubility in a solvent and alkali developability, excellent in heat resistance and light resistance, and without film roughness while achieving a demand for high brightness. A structure represented by (6) is preferable.
Formula 6:

(In the formula (6), ^{R 1} is a hydrogen atom or a methyl group, A is a direct bond or a divalent linking group, ^{R 2} is an alkylene group having 1 to 8 carbon ^{atoms, - [CH (R 5)} - ^{CH (R 6) -O] x} -CH (R 5) -CH (R 6) - or _{- [(CH 2) y-} O] z- (CH 2) y- 2 monovalent organic group represented by, R ³ and R ⁴ each independently represent a hydrocarbon group optionally substituted linear and even though / or cyclic, and .R ⁵ R ³ and R ⁴ form a ring structure by bonding with each other R ⁶ each independently represents a hydrogen atom or a methyl group, x represents an integer of 1 to 18, y represents an integer of 1 to 5, and z represents an integer of 1 to 18.)

（式（７）中、Ｒ^１は、水素原子又はメチル基、Ｒ^２は、炭素数１〜８のアルキレン基、−［ＣＨ（Ｒ^５）−ＣＨ（Ｒ^６）−Ｏ］ｘ−ＣＨ（Ｒ^５）−ＣＨ（Ｒ^６）−又は−［（ＣＨ_２）ｙ−Ｏ］ｚ−（ＣＨ_２）ｙ−で示される２価の有機基、Ｒ^３及びＲ^４は、それぞれ独立に、置換されていてもよい鎖状及び／又は環状の炭化水素基を表すか、Ｒ^３及びＲ^４が互いに結合して環状構造を形成する。Ｒ^５及びＲ^６は、それぞれ独立に水素原子又はメチル基である。ｘは１〜１８の整数、ｙは１〜５の整数、ｚは１〜１８の整数を示す。） Examples of the divalent linking group A in the above formula (6) include, for example, an alkylene group having 1 to 10 carbon atoms, an arylene group, a -CONH- group, a -COO- group, and an ether group having 1 to 10 carbon atoms (-R '-OR "-: R' and R" each independently represents an alkylene group) and combinations thereof. Among them, A is preferably a —COO— group from the viewpoint that the obtained graft copolymer is heat resistant, soluble in PGMEA, and relatively inexpensive. When A is a —COO— group, the monomer having an ethylenically unsaturated double bond and a tertiary amine has a structure represented by the following formula (7).
Formula 7:

(In the formula (7), ^{R 1} is a hydrogen atom or a methyl group, ^{R 2} is an alkylene group having 1 to 8 carbon ^{atoms, - [CH (R 5)} -CH (R 6) -O] x-CH ( ^{R 5) -CH (R 6)} - or _{- [(CH 2) y-} O] z- (CH 2) y- 2 monovalent organic group represented by, ^{R 3} and ^{R 4} each independently represent a substituted Represents a linear and / or cyclic hydrocarbon group which may be substituted, or R ³ and R ⁴ are bonded to each other to form a cyclic structure, and R ⁵ and R ⁶ are each independently a hydrogen atom or a methyl group X represents an integer of 1 to 18, y represents an integer of 1 to 5, and z represents an integer of 1 to 18.)

The divalent organic group R ² in the above formulas (6) and (7) is an alkylene group having 1 to 8 carbon atoms, — [CH (R ⁵ ) —CH (R ⁶ ) —O] x—CH (R ⁵⁾ -CH ^{(R 6)} - or _{- [(CH 2) y-} O] z- (CH 2) a y-. The alkylene group having 1 to 8 carbon atoms may be linear or branched, for example, methylene group, ethylene group, trimethylene group, propylene group, various butylene groups, various pentylene groups, various hexylenes. Groups, various octylene groups and the like. R ⁵ and R ⁶ are each independently a hydrogen atom or a methyl group. x is an integer of 1 to 18, preferably an integer of 1 to 4, more preferably an integer of 1 to 2, and y is an integer of 1 to 5, preferably an integer of 1 to 4, more preferably 2 or 3. is there. z is an integer of 1-18, preferably an integer of 1-4, more preferably an integer of 1-2. R ² is preferably an alkylene group having 1 to 8 carbon atoms from the viewpoint of dispersibility. Among them, R ² is more preferably a methylene group, an ethylene group, a propylene group, or a butylene group. Groups are more preferred.

Examples of the cyclic structure formed by combining R ³ and R ^{4 in the} above formulas (6) and (7) with each other include a 5- to 7-membered nitrogen-containing heterocyclic monocycle or a condensation of two of these. A condensed ring is mentioned. The nitrogen-containing heterocycle preferably has no aromaticity, more preferably a saturated ring. Specifically, examples of the cyclic structure of R ³ and R ^{4 in} the above formulas (6) and (7) include those of the following formula (8).
Formula 8:

The cyclic structure of R ³ and R ⁴ may further have a substituent. As a substituent between R ^{3 and} R ⁴ , an alkyl group having 1 to 3 carbon atoms which may have a substituent, an aralkyl group which may have a substituent, or a substituent is more preferable. It is a phenyl group which may have.

Examples of the chain hydrocarbon group in R ³ and R ⁴ include an alkyl group having 1 to 8 carbon atoms. Examples of the alkyl group having 1 to 8 carbon atoms include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, octyl group, isopropyl group, tert-butyl group, 2-ethylhexyl group and the like. Examples of the cycloalkyl group include a cyclopentyl group, a cyclohexyl group, and a cyclooctyl group. Of these, preferred are a methyl group and an ethyl group.

  Examples of the monomer represented by the above formula (6) include (meth) acryloyloxypropyldimethylamine, (meth) acryloyloxyethyldimethylamine, meth) acryloyloxypropyldiethylamine, (meth) acryloyloxyethyldiethylamine, and the like. However, it is not limited to these.

  By containing a monomer having an ethylenically unsaturated double bond and a tertiary amine as a copolymerization component, the tertiary amine and the sulfonic acid group of the dye can have a function of causing an acid-base interaction.

In the block part composed of repeating units having a tertiary amine, the repeating unit having a tertiary amine is preferably one containing three or more, making the dispersibility good, excellent heat resistance and light resistance, and curability. From the point of improvement, it is preferable to include 3 to 50, more preferably 6 to 40, and even more preferably 10 to 30. The repeating unit having a tertiary amine only needs to function as a dye affinity site, and may be composed of one kind or may contain two or more kinds of repeating units.

  Another block part can be suitably selected in the range which does not inhibit the affinity with the block part which consists of the repeating unit which has the said tertiary amine, and the said dye. The repeating unit constituting the other block part may be composed of one kind or may contain two or more kinds of repeating units.

  These binder resins may be used alone or in combination of two or more. In the resin composition of the present invention, the content of the binder resin is usually preferably in the range of 1 to 50% by weight, more preferably 1 to 20% by weight, based on the total amount of the resin composition.

  Moreover, the compound which has an imidazole group of the structure containing nitrogen can be used for a resin composition. For example, it is a compound that generates free radicals by the energy of ultraviolet rays, and examples thereof include the following biimidazole compounds used as a photopolymerization initiator.

Polymerization initiator The resin composition according to the present invention may further contain a polymerization initiator. As polymerization initiators, t-amyl peroxyneodecanoate, t-butylperoxyneodecanoate, di (2-ethylhexyl) peroxydicarbonate, di (secondary butyl) peroxydicarbonate, t-butyl Peroxyneoheptanoate, t-amyl peroxypivalate, t-hexyl peroxypivalate, t-butyl peroxypivalate, diisononanoyl peroxide, di (3,5,5-trimethylhexanoyl) Peroxide, dilauroyl peroxide, 1,1,3,3-tetramethylbutylperoxy-2-ethylhexanoate, dibenzoyl peroxide, t-amylperoxy-2-ethylhexanoate, t-butyl Peroxy-2-ethylhexanoate, t-butylperoxy Sobutyrate, disuccinic acid peroxide, 2,5-dimethyl-2,5-di (2-ethylhexanoylperoxy) hexane, t-hexylperoxy-2-ethylhexanoate, di (4-methylbenzoyl) Examples include peroxide, t-butylperoxy-2-ethylhexanoate, and 1,1-di (t-butylperoxy) -2-methylcyclohexane. Particularly preferred polymerization initiators are selected from the group consisting of t-butyl peroxypivalate, di (3,5,5-trimethylhexanoyl) peroxide, disuccinic acid peroxide, dibenzoyl peroxide, and mixtures thereof. It is what is done. In the present invention, commercially available polymerization initiators can also be used, such as Irgacure 184, Irgacure 369, Irgacure 651, Irgacure 907 (all manufactured by Ciba Specialty Chemicals), Darocur (Merck), Adeka 1717 ( Ketone compounds such as Asahi Denka Kogyo Co., Ltd., and 2,2′-bis (o-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl-1,2′biimidazole (Kurokin Kasei Co., Ltd.) Biimidazole compounds such as those manufactured by the company and trade name: biimidazole) are preferred. In a preferred embodiment, the content of the polymerization initiator is 0.1 to 20% by mass with respect to the total mass of the coloring composition.

Pigment The resin composition according to the present invention may further contain a pigment. The pigment is an organic pigment, for example, at least one selected from the group consisting of Pigment Blue 15, Pigment Blue 15: 3, Pigment Blue 15: 4, Pigment Blue 15: 6, Pigment Blue 60, and Pigment Violet 23. Preferably, pigment blue 15: 6 is more preferable. Since the resin composition contains a pigment, it is easy to optimize the transmission spectrum, which is favorable for obtaining a coating film and a pattern with high contrast and high brightness. Furthermore, heat resistance and chemical resistance are improved.

Dispersant The resin composition according to the present invention may further contain a dispersant. The dispersant is not particularly limited as long as it can disperse the above-mentioned pigments. For example, cationic, anionic, nonionic, amphoteric, silicone, fluorine-based surfactants can be used. Among these, it is preferable to use a polymer surfactant (polymer dispersant). Examples of the polymer surfactant include polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene alkyl ethers such as polyoxyethylene oleyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene nonyl phenyl ether, and the like. And polyoxyethylene alkyl phenyl ethers, polyethylene glycol diesters such as polyethylene glycol dilaurate and polyethylene glycol distearate, sorbitan fatty acid esters, fatty acid-modified polyesters, and tertiary amine-modified polyurethanes. In the present invention, commercially available dispersants can also be used, for example, various Solsperse dispersants such as Solsperse 3000, 5000, 9000, 12000, 13240, 13940, 17000, 20000, 24000, 26000, and 28000 (Zeneca Corporation). And Disperbyk111 (manufactured by Big Chemie Japan Co., Ltd.) are preferable. Further, it is more preferable to use a dye dispersant in which the sulfonyl group of the dye and the amine in the dispersant form micelles as described in Japanese Patent No. 4911256 and Japanese Patent No. 4911253.

Solvent The resin composition according to the present invention may further contain a solvent. Examples of the solvent include alcohols such as methanol, ethanol, n-propanol, isopropanol, ethylene glycol and propylene glycol, terpenes such as α- or β-terpineol, acetone, methyl ethyl ketone, cyclohexanone, N-methyl-2- Ketones such as pyrrolidone, aromatic hydrocarbons such as toluene, xylene, tetramethylbenzene, cellosolve, methyl cellosolve, ethyl cellosolve, carbitol, methyl carbitol, ethyl carbitol, butyl carbitol, propylene glycol monomethyl ether, propylene Glycol monoethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, triethylene glycol monomethyl ether, Glycol ethers such as reethylene glycol monoethyl ether, ethyl acetate, butyl acetate, cellosolve acetate, ethyl cellosolve acetate, butyl cellosolve acetate, carbitol acetate, ethyl carbitol acetate, butyl carbitol acetate, propylene glycol monomethyl ether acetate, propylene glycol mono Examples include ethyl ether acetate and acetates such as 3-methoxybutyl acetate. In the present invention, commercially available solvents can also be used, for example, propylene glycol monomethyl ether acetate (produced by Daicel Chemical Industries, Ltd.), propylene glycol monoethyl ether (produced by Daicel Chemical Industries, Ltd.), and 3-methoxybutyl acetate. (Daicel Chemical Industries, Ltd.) is preferable.

Antioxidant The resin composition according to the present invention may further contain an antioxidant. Antioxidants include N-phenyl-1,1,3,3-tetramethylbutylnaphthalen-1-amine, diphenylamine, pentaerythritol, tetrakis (3- (3,5-di-tert-butyl-4-hydroxy). Phenyl) propionate), octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, hexamethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] Thiodiethylene bis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], benzenepropanoic acid, 3,5-bis (1,1-dimethyl-ethyl) -4-hydroxy-, C7-C9 side chain alkyl esters.

Sensitizer The resin composition according to the present invention may further contain a sensitizer. Examples of the sensitizer include 1-vinylimidazole (Tokyo Chemical Industry Co., Ltd.).

Color Filter The color filter according to the present invention has a colored pixel portion formed from the above colored resin composition. If it is such a color filter, the structure etc. will not be specifically limited. In a preferred embodiment, the color filter may be provided with a black matrix between the respective colors, and further provided with a protective layer, a transparent electrode layer, a resin layer, an alignment layer, and the like. The color filter according to the present invention is preferably a color filter for organic EL. In recent years, in order to further improve the display characteristics of an organic EL display device, particularly high luminance and high color rendering of a color filter are required. In addition, the organic EL is characterized by low power consumption because it emits light, but its characteristics can be further enhanced by obtaining high luminance. In addition, a long life can be expected by reducing the amount of current flowing through the organic EL.

Method for Producing Color Filter The method for producing a color filter according to the present invention is not particularly limited, but can be carried out according to a preferred embodiment shown below. That is, according to the preferable aspect of this invention, said coloring composition is apply | coated on a base material, and it prebakes after drying under reduced pressure, and removes a solvent. For the application of the composition, conventionally known methods can be used, such as spin coating, printing, inkjet, bar coating, spraying, die coating, bead coating, and slit & spin coating. It is done. Subsequently, UV light is exposed to cure the composition. Furthermore, the colored pixel portion can be formed on the substrate by post-baking.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to the following examples.

Example 1
Preparation of curable resin composition First, 63 parts by mass of methyl methacrylate (MMA), 10 parts by mass of acrylic acid (AA), 6 parts by mass of 2-hydroxyethyl methacrylate (HEMA) in the polymerization tank, -After 4 parts by weight of vinylimidazole and 88 parts by weight of diethylene glycol dimethyl ether (DMDG) were added and stirred to dissolve, 5 parts by weight of 2,2'-azobis (2-methylbutyronitrile) was added and dissolved uniformly. I let you. Then, it stirred at 85 degreeC under nitrogen stream for 2 hours, and also was made to react at 100 degreeC for 1 hour. Further, 7 parts by mass of glycidyl methacrylate (GMA), 0.4 parts by mass of triethylamine, and 0.2 parts by mass of hydroquinone were added to the obtained solution, and the mixture was stirred at 100 ° C. for 5 hours. Obtained.
Composition of copolymer resin solution
-Methyl methacrylate (MMA) (manufactured by Kuraray Co., Ltd.): 63 parts by mass-Acrylic acid (AA) (manufactured by Nippon Shokubai): 10 parts by mass-2-hydroxyethyl methacrylate (HEMA) (manufactured by Nippon Shokubai): 6 Parts by mass, diethylene glycol dimethyl ether (DMDG) (manufactured by Junsei Co., Ltd.): 88 parts by mass, 2,2′-azobis (2-methylbutyronitrile) (trade name: ABN-R, manufactured by Nippon Finechem Co., Ltd.): 5 Mass parts: Glycidyl methacrylate (GMA) (Nippon Yushi Co., Ltd.): 7 parts by mass Triethylamine (Wako Pure Chemical Industries): 0.4 parts by mass Hydroquinone (Seiko Chemical Co., Ltd.): 0.2 parts by mass 1-vinylimidazole (manufactured by Tokyo Chemical Industry Co., Ltd.) 4 parts by mass

Next, the following materials were stirred and mixed at room temperature to obtain a curable resin composition.
Composition of curable resin composition / copolymer resin solution: 16 parts by mass / dipentaerythritol pentaacrylate (trade name: SR399, manufactured by Sartomer): 24 parts by mass / orthocresol novolac type epoxy resin (trade name: Epicoat 180S70) , Yuka Shell Epoxy Co., Ltd.): 4 parts by mass 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one (trade name: Irgacure 907, manufactured by Ciba Specialty Chemicals) ): 4 parts by mass / diethylene glycol dimethyl ether (manufactured by Junsei Kagaku): 52 parts by mass

Preparation of colored resin composition Subsequently, the following materials were mixed using a paint shaker (manufactured by Asada Steel Corporation, bead diameter: 0.3 mm) to obtain a colored resin composition for a blue pixel portion.
Composition of colored resin composition for blue pixel portion
Color material (pigment): C.I. I. Pigment Blue 1 (trade name: FANAL BLUE D6340, manufactured by BASF): 2 parts by mass, coloring material (dye): Acid Blue 1 (manufactured by Tokyo Chemical Industry Co., Ltd.) 3.3 parts by mass, the curable resin composition: 16 Mass parts / dispersing agent: Disperbyk111 (manufactured by Big Chemie Japan): 1.6 parts by mass / the curable resin composition: 20.8 parts by mass / solvent: 3-methoxybutyl acetate (manufactured by Daicel Chemical Industries, Ltd.): 73.6 parts by mass

Blue filter manufacturing
After applying the colored resin composition for the blue pixel part prepared above to a 0.7 mm glass substrate (AN material manufactured by Asahi Glass Co., Ltd.) using a spin coater, pre-baking at 80 ° C. for 3 minutes to dry the coating film I let you. Next, the dried coating film was exposed to 200 mJ / cm 2 using a high-pressure mercury lamp, and then post-baked at 180 ° C. for 20 minutes to produce a blue filter having a blue pixel portion on the substrate.

Example 2
A blue filter was produced in the same manner as in Example 1 except that in the preparation of the colored resin composition for the blue pixel portion, the composition of the copolymer resin solution was as follows.
Composition of copolymer resin solution
-Methyl methacrylate (MMA) (manufactured by Kuraray Co., Ltd.): 63 parts by mass-Acrylic acid (AA) (manufactured by Nippon Shokubai): 10 parts by mass-2-hydroxyethyl methacrylate (HEMA) (manufactured by Nippon Shokubai): 6 Parts by mass, diethylene glycol dimethyl ether (DMDG) (manufactured by Junsei Co., Ltd.): 88 parts by mass, 2,2′-azobis (2-methylbutyronitrile) (trade name: ABN-R, manufactured by Nippon Finechem Co., Ltd.): 5 Mass parts: Glycidyl methacrylate (GMA) (Nippon Yushi Co., Ltd.): 7 parts by mass Triethylamine (Wako Pure Chemical Industries): 0.4 parts by mass Hydroquinone (Seiko Chemical Co., Ltd.): 0.2 parts by mass 1-vinylimidazole (manufactured by Tokyo Chemical Industry Co., Ltd.) 4 parts by mass / styrene monomer (trade name: styrene monomer (SM) Shell Chemicals Japan Ltd. Company, Ltd.) 7 parts by weight

Example 3
A blue filter was produced in the same manner as in Example 1 except that in the preparation of the colored resin composition for the blue pixel portion, the composition of the curable resin composition was as follows.
Composition of curable resin composition / copolymer resin solution: 16 parts by mass / dipentaerythritol pentaacrylate (trade name: SR399, manufactured by Sartomer): 24 parts by mass / orthocresol novolac type epoxy resin (trade name: Epicoat 180S70) , Yuka Shell Epoxy Co., Ltd.): 4 parts by mass 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one (trade name: Irgacure 907, manufactured by Ciba Specialty Chemicals) ): 4 parts by mass-Diethylene glycol dimethyl ether (manufactured by Junsei Kagaku): 52 parts by mass-Bisphenol A type epoxy resin (trade name: JER827, manufactured by Japan Epoxy Resin Co., Ltd.) 4 parts by mass

Example 4
A blue filter was produced in the same manner as in Example 1 except that in the preparation of the colored resin composition for the blue pixel portion, the composition of the copolymer resin solution was as follows.
Composition of copolymer resin solution
-Methyl methacrylate (MMA) (manufactured by Kuraray Co., Ltd.): 63 parts by mass-Acrylic acid (AA) (manufactured by Nippon Shokubai): 10 parts by mass-2-hydroxyethyl methacrylate (HEMA) (manufactured by Nippon Shokubai): 6 Parts by mass, diethylene glycol dimethyl ether (DMDG) (manufactured by Junsei Co., Ltd.): 88 parts by mass, 2,2′-azobis (2-methylbutyronitrile) (trade name: ABN-R, manufactured by Nippon Finechem Co., Ltd.): 5 Mass parts: Glycidyl methacrylate (GMA) (Nippon Yushi Co., Ltd.): 7 parts by mass Triethylamine (Wako Pure Chemical Industries): 0.4 parts by mass Hydroquinone (Seiko Chemical Co., Ltd.): 0.2 parts by mass 1-vinylimidazole (manufactured by Tokyo Chemical Industry Co., Ltd.) 4 parts by mass, diphenylamine (antioxidant, trade name: IRGANOX L109 (Toyotsu Chemiplus) 7 parts by mass

Comparative Example 1
A blue filter was produced in the same manner as in Example 1 except that the composition of the copolymer resin solution and the composition of the curable resin composition were as follows in the preparation of the colored resin composition for the blue pixel portion.
Composition of copolymer resin solution
-Methyl methacrylate (MMA) (manufactured by Kuraray Co., Ltd.): 63 parts by mass-Acrylic acid (AA) (manufactured by Nippon Shokubai): 12 parts by mass-2-hydroxyethyl methacrylate (HEMA) (manufactured by Nippon Shokubai): 6 Parts by mass, diethylene glycol dimethyl ether (DMDG) (manufactured by Junsei Co., Ltd.): 88 parts by mass, 2,2′-azobis (2-methylbutyronitrile) (trade name: ABN-R, manufactured by Nippon Finechem Co., Ltd.): 7 Mass parts: Glycidyl methacrylate (GMA) (Nippon Yushi Co., Ltd.): 7 parts by mass Triethylamine (Wako Pure Chemical Industries): 0.4 parts by mass Hydroquinone (Seiko Chemical Co., Ltd.): 0.2 parts by mass
Composition of curable resin composition / copolymer resin solution: 16 parts by mass / dipentaerythritol pentaacrylate (trade name: SR399, manufactured by Sartomer): 24 parts by mass / orthocresol novolac type epoxy resin (trade name: Epicoat 180S70) , Yuka Shell Epoxy Co., Ltd.): 4 parts by mass 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one (trade name: Irgacure 907, manufactured by Ciba Specialty Chemicals) ): 4 parts by mass-Diethylene glycol dimethyl ether (manufactured by Junsei Chemical Co., Ltd.): 52 parts by mass-Orthocresol novolac-type epoxy resin (trade name: Epolide GT401, manufactured by Daicel Chemical Industries, Ltd.) 4 parts by mass

Comparative Example 2
A blue filter was produced in the same manner as in Example 1 except that in the preparation of the colored resin composition for the blue pixel portion, the composition of the copolymer resin solution was as follows.
Composition of copolymer resin solution
-Methyl methacrylate (MMA) (manufactured by Kuraray Co., Ltd.): 63 parts by mass-Acrylic acid (AA) (manufactured by Nippon Shokubai): 12 parts by mass-2-hydroxyethyl methacrylate (HEMA) (manufactured by Nippon Shokubai): 6 Parts by mass, diethylene glycol dimethyl ether (DMDG) (manufactured by Junsei Co., Ltd.): 88 parts by mass, 2,2′-azobis (2-methylbutyronitrile) (trade name: ABN-R, manufactured by Nippon Finechem Co., Ltd.): 7 Mass parts: Glycidyl methacrylate (GMA) (Nippon Yushi Co., Ltd.): 7 parts by mass Triethylamine (Wako Pure Chemical Industries): 0.4 parts by mass Hydroquinone (Seiko Chemical Co., Ltd.): 0.2 parts by mass

Light Resistance Test The light resistance test of the color filters produced in the above examples and comparative examples was performed by the following method. First, before the light resistance test, the transmission spectrum of the blue pixel portion was measured using a microspectroscope OSP-SP2000 (manufactured by OLYMPUS). Next, with a xenon fade meter using a xenon arc lamp from the glass surface side (product name: Suntest XLS +), the color filter has an illuminance of 320 W / m in an environment with an internal temperature of 50 ° C. The transmission spectrum was measured after 100 hours of irradiation at the output. ΔE * ab, which is the chromaticity difference before and after the light resistance test, was calculated from the spectrum before and after the light resistance test, and the light resistance of the blue pixel portion was evaluated. The chromaticity difference indicates that the smaller the numerical value, the higher the light resistance. Standard light C was used as a light source for color difference evaluation.

The results of the light resistance test are as shown in Table 1. It was found that the color filter satisfying the configuration of the present invention has a small color difference value and excellent light resistance.

Claims (8)

A colored resin composition for a photoresist for use in forming a colored pixel portion of a color filter,
The colored resin composition is
A dye having an acidic group;
A resin composition comprising a binder resin having a substituent capable of causing an acid-base interaction with an acidic group of the dye and a substituent having a radical scavenging ability ;
The dye comprises Acid Blue 1,
The colored resin composition, wherein the substituent capable of causing an acid-base interaction with the acid group of the dye contains an imidazole group.   The colored resin composition according to claim 1, wherein the acidic group is at least one selected from the group consisting of a sulfonyl group, a carboxyl group, a phenolic hydroxyl group, and a phosphone group. The substituent having radical scavenging ability is selected from the group consisting of a hindered phenol compound, a hindered amine compound, an aromatic amine compound, a naphthylamine compound, a phenylenediamine compound, a hydroxyamine compound, and an aromatic hydrocarbon. The colored resin composition according to claim 2 , wherein the colored resin composition has a structure derived from at least one kind. The colored resin composition according to claim 2 or 3 , wherein the substituent having a radical scavenging ability is a structure derived from at least one selected from the group consisting of styrene and phenol. The colored resin composition according to any one of claims 1 to 4 , wherein the resin composition further comprises an additive. The colored resin composition according to any one of claims 1 to 5 , wherein the colored resin composition further comprises a pigment. Wherein the pigment is Pigment Blue 15, Pigment Blue 15: 3, Pigment Blue 15: 4, Pigment Blue 15: 6, at least one selected from the group consisting of Pigment Blue 60 and Pigment Violet 23, claim 6 The colored resin composition described in 1. Comprising a colored pixel portion formed by the colored resin composition according to any one of claims 1 to 7 color filters.