JP3293171B2 - Radiation-sensitive composition for color filter and color filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation-sensitive composition for a color filter for forming a color filter used in a color liquid crystal display device or an image pickup tube device.
More specifically, the present invention relates to a radiation-sensitive composition for a color filter capable of producing a color filter having high performance with excellent yield.

[0002]

Problems to be Solved by the Invention Conventionally, when producing a color filter using a radiation-sensitive composition,
Although development is performed using an alkaline aqueous solution, an undissolved substance of the radiation-sensitive composition sometimes remains on the substrate surface in the non-pixel portion. If the undissolved material of the radiation-sensitive composition remains in the non-pixel portion on the substrate, the resulting color filter may have reduced transmittance or reduced contrast. Also, the color filter usually forms a three-color pixel by sequentially forming a radiation-sensitive composition having a hue of red, blue, or green on the substrate,
When the undissolved material of the radiation-sensitive composition remains on the substrate surface of the non-pixel portion as described above when forming a certain color pixel, then, the undissolved material of another color formed on the remaining substrate The color pixel has poor adhesion to the substrate, so there is a possibility that the color pixel may be peeled off. As described above, the undissolved material of the radiation-sensitive composition remaining on the substrate surface in the non-pixel portion was one of the causes of lowering the yield of the color filter production.

According to the present invention, when a color filter is manufactured, undissolved matter of the radiation-sensitive composition does not remain in non-pixel portions on the substrate, and color pixels having excellent adhesion to the substrate can be uniformly formed. It is an object of the present invention to provide a negative radiation-sensitive composition for a color filter which can be formed uniformly.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems in the prior art, and includes a pigment, a binder polymer, a radiation-sensitive compound, a solvent and at least one acid in a molecule. At least one specific organic carboxylic acid compound having a group (carboxyl group) and a molecular weight of 1,000 or less and, if necessary, a radiation-sensitive composition for a color filter, comprising an additive, It has been found that the above problem can be solved at once by forming the above, and the present invention has been completed.

[0005]

DETAILED DESCRIPTION OF THE INVENTION The radiation-sensitive composition for a color filter according to the present invention will be specifically described below.

The radiation-sensitive composition for a color filter according to the present invention comprises [A] a pigment, [B] a binder polymer,
[C] a radiation-sensitive compound, [D] a solvent, and [E] at least one organic carboxylic acid compound having a molecular weight of 1,000 or less and having at least one acid group in the molecule, which is further required. [F] additive is contained according to

Hereinafter, these components will be described in detail. [A] Pigment In the present invention, an organic pigment or an inorganic pigment is used as the pigment [A].

[0008] Such organic pigments include dyes or pigments insoluble in water or organic solvents, and specifically include a color index CI (The Society of Dyers a).
nd Colorists) and compounds classified as Pigment.

Examples of the inorganic pigment include metal compounds such as metal oxides and metal complex salts. Specifically, iron, cobalt, aluminum, cadmium, lead, copper, titanium,
Examples include metal oxides or composite oxides such as magnesium, chromium, zinc, and antimony.

More specifically, examples of such a pigment [A] include compounds having the following color index CI number. CIPigment Yellow 24, CIPigment Yellow 31, C.
I. Pigment Yellow 53, CIPigment Yellow 83, CIPi
gment Orange 43, CIPigment Red 105, CIPigment
Red 149, CIPigment Red 176, CIPigment Red 17
7, CIPigment Violet 14, CIPigment Violet 29,
CIPigment Blue 15, CIPigment Blue 15: 3, CIPi
gment Blue 22, CIPigment Blue 28, CIPigment Gr
een 15, CIPigment Green 25, CIPigment Green
36, CIPigment Brown 28, CIPigment Black 1, C.
I. Pigment Black 7, etc.

In the present invention, the pigment [A] is usually used in an amount of 10 to 100 parts by weight based on 100 parts by weight of the binder polymer [B].
It is used in an amount of 0 parts by weight, preferably 20 to 500 parts by weight.

[B] Binder Polymer In the present invention, a copolymer of an acid monomer [B-1] and a comonomer [B-2] copolymerizable with the acid monomer is preferably used as the binder polymer [B]. Can be

The acid monomer [B-1] used for forming such a binder polymer [B] includes unsaturated carboxylic acids having at least one carboxyl group in the molecule (for example, unsaturated monocarboxylic acids). Carboxylic acid, unsaturated dicarboxylic acid). Specific examples of the unsaturated carboxylic acid include (meth) acrylic acid, crotonic acid, itaconic acid, maleic acid, and fumaric acid.

These are used alone or in combination. Specific examples of the comonomer [B-2] include aromatic vinyl compounds such as styrene, α-methylstyrene, and vinyltoluene, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, Hydroxyethyl (meth) acrylate,
Unsaturated carboxylic acid alkyl esters such as benzyl (meth) acrylate, unsaturated carboxylic acid aminoalkyl esters such as aminoethyl acrylate, unsaturated carboxylic acid glycidyl esters such as glycidyl (meth) acrylate, and carboxylic acids such as vinyl acetate and vinyl propionate Acid vinyl ester (meth) acrylonitrile, α
-Vinyl cyanide compounds such as chloroacrylonitrile; aliphatic conjugated dienes such as 1,3-butadiene and isoprene; polystyrene, polymethyl (meth) acrylate, polybutyl (meth) acrylate, and polysilicone each having a (meth) acryloyl group at each end And the like.

These may be used alone or in combination. In forming the binder polymer [B], the acid monomer [B-1] as described above is preferably used in an amount of 15% by weight to 50% by weight based on 100% by weight of the total monomers.
% By weight, more preferably 20% to 40% by weight
Used in amounts.

Specific examples of the binder polymer [B] include benzyl methacrylate / methacrylic acid / styrene copolymer, methyl methacrylate / methacrylic acid / styrene copolymer, and benzyl methacrylate / methacrylic acid / polystyrene macromonomer. And copolymers of methyl methacrylate / methacrylic acid / polystyrene macromonomer.

The binder polymer [B] containing a structural unit derived from the acid monomer [B-1] is as follows:
Shows alkali solubility. In particular, a binder polymer [B] obtained by using the acid monomer [B-1] in the amount described above.
Is excellent in solubility in an alkali developing solution and hardly generates undissolved matter, and hardly generates background stain, film residue and the like on a non-pixel portion substrate. Further, the color pixels formed from the binder polymer [B] are not excessively dissolved in the alkali developing solution, have excellent adhesion to the substrate, and do not easily fall off the substrate.

The binder polymer [B] used in the present invention preferably has a weight average molecular weight in terms of polystyrene measured by gel permeation chromatography (GPC; using THF as a carrier) of preferably 20,000.
00 to 500,000, more preferably 30,0.
00 to 300,000.

The binder polymer [B] having such a molecular weight hardly generates scum (floating scum) around the color pixel during development, can form a pixel having a sharp pattern edge, and can form a pixel on the non-pixel portion substrate. Undissolved matter hardly remains on the surface, and soiling, film residue, and the like hardly occur. Furthermore, when such a binder polymer [B] is used, the development time that can be developed under the optimum conditions is lengthened, and the so-called development time margin is increased.

[C] Radiation Sensitive Compound The radiation sensitive compound [C] used in the present invention generates radicals (active molecular fragments) such as carbene and nitrene when irradiated with radiation and reacts with the binder polymer to give a three-dimensional structure. It is a compound that forms a crosslinked structure. Usually, a three-dimensional crosslinked structure is formed by the following two kinds of reaction systems.

(I) Radicals such as carbene and nitrene released by irradiation of the radiation-sensitive compound with radiation act on a binder polymer or the like to induce a double bond chain reaction to form a three-dimensional crosslinked structure. What to do,
(ii) Radicals such as carbene and nitrene released by irradiating a molecule such as a radiation-sensitive compound with radiation form C—C bonds or C—H in the binder polymer.
A compound that forms a three-dimensional cross-linked structure by an insertion reaction into a bond.

The binder polymer [B] is entangled during the three-dimensional crosslinking reaction by the reaction system (i),
Alternatively, it reacts with the radiation-sensitive compound [C] by the reaction system (ii) to form a crosslinked structure and is insolubilized.

In the present invention, the term "radiation" is used as a concept including visible light, ultraviolet light, electron beam, X-ray and the like. Specific examples of the radiation-sensitive compound [C] include a photopolymerization initiator, a photopolymerizable monomer, a photopolymerizable oligomer, and a photocrosslinking agent.

Examples of the above photopolymerization initiator include carbonium compounds such as diacetyl and benzoin; azo compounds such as azobisisobutyronitrile, diazonium and azide compounds; and organic sulfur compounds such as azide compounds and mercaptan disulfide. And peroxides such as ether peroxide, carboxylic acid peroxide and the like.

More specifically, 2-hydroxy-2-methyl
-1-phenylpropan-1-one, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 4-
(2-hydroxyethoxy) phenyl- (2-hydroxy-2-
Propyl) ketone, 1-hydroxycyclohexylphenyl ketone, 2,2-dimethoxy-2-phenylacetophenone, 2-methyl (4-methylthiophenyl) -2-morpholino-1-propan-1-one, 2-benzyl-2- Dimethylamino-1- (4-morpholinophenyl) -butan-1-one, benzophenone, 4,4′-bis (dimethylamino) benzophenone, 4,4′-bis (diethylamino) benzophenone,
2,4-diethylthioxanthone, 3,3-dimethyl-4-methoxybenzophenone, 4-azidobenzaldehyde, 4-azidoacetophenone, 4-azidobenzalacetophenone,
Azidopyrene, 4-diazodiphenylamine, 4-diazo-
4'-methoxy-diphenylamine, 4-diazo-3-methoxy-diphenylamine, dibenzoyl (also known as benzyl), benzoinnoisobutyl ether, N-phenyl
-Thioacridone, triphenylpyrylium perchlorate and the like.

Among these, 2-methyl- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl
2-Dimethylamino-1- (4-morpholinophenyl) -butan-1-one is preferred.

Examples of the photopolymerizable monomer or oligomer include trimethylolpropane triacrylate, pentaerythritol triacrylate, trisacryloyloxyethyl phosphate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate and the like. Of polyfunctional acrylates, and oligomers thereof.

Of these, trimethylolpropane triacrylate, dipentaerythritol pentaacrylate, and pentaerythritol triacrylate are preferred.

Examples of the photocrosslinking agent include diazidochalcone, 2,6-bis (4′-azidobenzal) cyclohexanone, 2,6-bis (4′-azidobenzal) -4-methylcyclohexanone, 1,3 -Bis (4'-azidobenzal) -2-propanone,
1,3-bis (4'-azidocinnamylidene) -2-propanone, 4,
4'-diazidostilbene, ammonium bichromate and the like.

In the present invention, a photopolymerization initiator as described above,
The photopolymerizable monomer, the photopolymerizable oligomer or the photocrosslinking agent is used alone or in combination, but it is preferable to use the photopolymerization initiator and the photopolymerizable monomer or the photopolymerizable oligomer together, and the photopolymerization initiator is used. It is more preferable to use a compound that generates a radical upon irradiation with radiation and a polyvalent acrylate as the photopolymerizable monomer or oligomer.

The radiation-sensitive compound [C] is usually added in an amount of 5 to 100 parts by weight of the binder polymer [B].
It is used in an amount of 500 parts by weight, preferably 20 to 200 parts by weight.

When a photopolymerization initiator and a photopolymerizable monomer or a photopolymerizable oligomer are used in combination, usually,
The photopolymerization initiator is 0.01 to 200 parts by weight based on 100 parts by weight of the photopolymerizable monomer or the photopolymerizable oligomer,
Preferably, it is used in an amount of 1 to 120 parts by weight.

When a sensitizer is used, the sensitizer is used in an amount of 0.01 to 200 parts by weight, preferably 50 to 180 parts by weight, based on 100 parts by weight of the photopolymerization initiator. The radiation-sensitive compound [C] used in the present invention may further have a functional group capable of functioning as a photopolymerization initiator, a photopolymerizable monomer or a photopolymerizable oligomer, a photocrosslinking agent or a sensitizer as described above in the main chain or the main chain. A polymer compound contained in the side chain may be contained.

Specific examples of such a polymer compound include a condensate of 4-azidobenzaldehyde and polyvinyl alcohol, a condensate of 4-azidobenzaldehyde and a phenol novolak resin, and a polymer of 4-acryloylphenylcinnamoyl ester. Or, a copolymer, 1,4-polybutadiene, 1,2-polybutadiene and the like can be mentioned.

[D] Solvent As the solvent [D] used in the present invention, specifically, alcohol solvents such as methyl alcohol, ethyl alcohol, n-propyl alcohol and i-propyl alcohol;
Cellosolve solvents such as methoxy alcohol and ethoxy alcohol, carbitol solvents such as methoxy ethoxy ethanol and ethoxy ethoxy ethanol, ester solvents such as ethyl acetate, butyl acetate, methyl methoxy propionate, ethyl ethoxy propionate, and ethyl lactate; acetone , Methyl isobutyl ketone, ketone solvents such as cyclohexanone, methoxyethyl acetate,
Cellosolve acetate solvents such as ethoxyethyl acetate and ethyl cellosolve acetate; carbitol acetate solvents such as methoxyethoxyethyl acetate and ethoxyethoxyethyl acetate; ether solvents such as diethyl ether, ethylene glycol dimethyl ether, diethylene glycol diethyl ether, and tetrahydrofuran; , N-dimethylformamide, N, N-
Dimethylacetamide, aprotic amide solvents such as N-methylpyrrolidone, lactone solvents such as γ-butyrolactone, unsaturated hydrocarbon solvents such as benzene, toluene, xylene and naphthalene, n-heptane, n-hexane, n And organic solvents such as saturated hydrocarbon solvents such as -octane.

Among these solvents, cellosolve acetate solvents such as methoxyethyl acetate, ethoxyethyl acetate, ethyl cellosolve acetate, carbitol acetate solvents such as methoxyethoxyethyl acetate, ethoxyethoxyethyl acetate, ethylene glycol dimethyl ether, diethylene glycol diethyl Ether solvents such as ether and propylene glycol diethyl ether, and ester solvents such as methyl methoxypropionate, ethyl ethoxypropionate and ethyl lactate are preferred.

In the present invention, the solvent [D] is usually used in an amount of 100 to 100 parts by weight based on 100 parts by weight of the binder polymer [B].
It is used in an amount of 00 parts by weight, preferably 500 to 5000 parts by weight.

[E] Organic Carboxylic Acid Compound The organic carboxylic acid compound [E] used in the present invention has a molecular weight of 1,000 or less and has at least one acid group (carboxyl group) in the molecule. I have.

As the organic carboxylic acid compound [E], an aliphatic carboxylic acid or a phenyl group-containing carboxylic acid is specifically used. Specific examples of the aliphatic carboxylic acids include monocarboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, pivalic acid, caproic acid, diethylacetic acid, enanthic acid, and caprylic acid, oxalic acid, malonic acid, and succinic acid. Acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, brassic acid, methylmalonic acid, ethylmalonic acid, dimethylmalonic acid, methylsuccinic acid, tetramethylsuccinic acid, cyclohexanedicarboxylic acid, itaconic acid, Examples thereof include dicarboxylic acids such as citraconic acid, maleic acid, and fumaric acid, and tricarboxylic acids such as tricarballylic acid, aconitic acid, and camphoronic acid.

As the phenyl group-containing carboxylic acid,
Carboxylic acids in which a carboxyl group is directly bonded to a phenyl group and carboxylic acids in which a carboxyl group is bonded to a phenyl group via a carbon bond are exemplified.

Specific examples of such phenyl group-containing carboxylic acids include monocarboxylic acids such as benzoic acid, toluic acid, cumic acid, hemelitic acid, mesitylene acid, phthalic acid, isophthalic acid, terephthalic acid and trimellitic acid. , Polycarboxylic acids such as trimesic acid, melophanic acid, pyromellitic acid, phenylacetic acid, hydroatropic acid, hydrocinnamic acid, mandelic acid, phenylsuccinic acid, atropic acid, cinnamic acid, methyl cinnamate, benzyl cinnamate, Cinnamylideneacetic acid, coumaric acid, umbellic acid and the like.

Among these, malonic acid, citraconic acid,
Aliphatic or aromatic dicarboxylic acids such as itaconic acid, mesaconic acid, fumaric acid, phthalic acid are preferred. The organic carboxylic acid compound [E] as described above is used alone or in combination.

The radiation-sensitive composition for a color filter according to the present invention comprises the above-mentioned organic carboxylic acid compound [E].
Is contained in the composition in an amount of 0.001 to 10% by weight, preferably 0.01 to 1% by weight.

When the content of the organic carboxylic acid in the radiation-sensitive composition for a color filter is less than 0.001% by weight, it is not possible to sufficiently prevent the undissolved matter from remaining in the non-pixel portion on the substrate. On the other hand, if it exceeds 10% by weight, there is a possibility that the adhesion between the pixel and the substrate may be reduced.

The radiation-sensitive composition for a color filter according to the present invention may optionally contain an additive. Specific examples of such an additive include a filler, another polymer compound, a surfactant, an adhesion promoter, an antioxidant, an ultraviolet absorber, and an anti-agglomeration agent.

More specifically, fillers such as glass and alumina, other polymer compounds such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether and polyfluoroalkyl acrylate, nonionic, cationic and anionic compounds Surfactants such as vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane,
N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3, Adhesion promoters such as 4-epoxycyclohexyl) ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, and 3-mercaptopropyltrimethoxysilane; Antioxidants such as 2-thiobis (4-methyl-6-t-butylphenol) and 2,6-di-t-butylphenol, 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) -5 -UV absorbers such as chlorobenzotriazole and alkoxybenzophenone, aggregation inhibitors such as sodium polyacrylate, benzophenone, 4,4'- Scan (diethylamino) benzophenone, wavelength, such as Nitoropin 2
Sensitizers such as organic dyes that absorb light of 00 to 490 nm are exemplified.

The radiation-sensitive composition for a color filter according to the present invention having the above-described composition can form a color filter without leaving undissolved substances on the surface of the non-pixel portion substrate during development.

The radiation-sensitive composition for a color filter according to the present invention is used for producing a color filter by forming color pixels on a substrate, preferably on a substrate on which a light-shielding layer pattern is formed, by a photolithographic method. Although used, when forming a pixel using such a radiation-sensitive composition for a color filter, undissolved matter of the radiation-sensitive composition does not remain in the non-pixel portion, and thus the formed color pixel That is, the color filter has excellent adhesion to the substrate and the light-shielding layer pattern.

Therefore, the pixels formed using the radiation-sensitive composition according to the present invention do not have a risk of peeling off from the substrate, and the obtained color filters have excellent transmittance or contrast.

By using the radiation-sensitive composition for a color filter according to the present invention, a high-performance color filter can be produced with an excellent yield. In the present invention, when forming a pixel using the radiation-sensitive composition for a color filter, as a developer, use an alkaline solution such as sodium carbonate, sodium hydroxide, potassium hydroxide, and tetramethylammonium hydroxide. Is preferred.

[0051]

EXAMPLES Next, the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples.

[0052]

EXAMPLE 1 A light-shielding layer having a desired pattern was formed on the surface of a soda glass substrate on which a SiO ₂ film for preventing sodium ions from being eluted was formed. After the radiation-sensitive composition 1 was applied to a desired thickness by a spin coater, the composition was dried at 80 ° C. for a sufficient time. Then, after cooling, the formed color filter layer was exposed to UV light of 400 mj / cm ² by a high-pressure mercury lamp through a photomask. Next, the substrate was immersed in a 0.05% aqueous sodium carbonate solution and developed to form a red pixel of 20 μm × 20 μm.

[0053]

[Table 1]

When a color pixel was manufactured as described above, a color filter could be formed without leaving undissolved matter in the non-pixel portion on the substrate. After the radiation-sensitive composition 1 for a color filter was allowed to stand at room temperature for 3 days, a red pixel was formed in the same manner as described above, and 0.05%
When immersed in an aqueous solution of sodium carbonate and developed, a color filter could be formed without leaving undissolved matter in the non-pixel portion on the substrate.

[0055]

Comparative Example 1 A red pixel was formed in the same manner as in Example 1 except that the composition 2 shown in Table 2 was used instead of the radiation-sensitive composition 1 for a color filter.

[0056]

[Table 2]

When the color pixels were formed as described above, undissolved substances were generated in the non-pixel portions on the substrate. When the concentration of the aqueous sodium carbonate solution was increased to 0.5%, the undissolved matter in the non-pixel portion was reduced, but a part of the formed pixel was peeled off or the sharpness of the pixel edge was reduced.

[0058]

Example 2 A blue pixel was prepared in the same manner as in Example 1, except that the radiation-sensitive composition 3 for a color filter shown in Table 2 was used instead of the radiation-sensitive composition 1 for a color filter. Was formed.

[0059]

[Table 3]

When color pixels were formed as described above, a color filter could be formed without leaving undissolved matter in non-pixel portions on the substrate. Even after being left at room temperature for three days as in Example 1, a color filter could be formed without leaving undissolved matter in the non-pixel portion on the substrate.

[0061]

Comparative Example 2 The procedure of Example 1 was repeated, except that the composition 2 shown in Table 2 was used instead of the radiation-sensitive composition 1 for a color filter.

[0062]

[Table 4]

Since the radiation-sensitive composition for a color filter contains a large amount of benzoic acid (organic carboxylic acid) of 15% by weight, it is developed with an aqueous solution of sodium carbonate. It was dissolved in an aqueous solution of sodium carbonate and a pixel could not be formed.

When the concentration of the aqueous sodium carbonate solution is 0.001
The same result was obtained even when it was reduced to%.

[0065]

Example 3 A green pixel was prepared in the same manner as in Example 1 except that the radiation-sensitive composition 5 for a color filter shown in Table 2 was used instead of the radiation-sensitive composition 1 for a color filter. Was formed.

[0066]

[Table 5]

When color pixels were formed as described above, a color filter could be formed without leaving undissolved substances in the non-pixel portions on the substrate. Even after being left at room temperature for three days as in Example 1, a color filter could be formed without leaving undissolved matter in the non-pixel portion on the substrate.

[0068]

Example 4 A red pixel was prepared in the same manner as in Example 1 except that the radiation-sensitive composition 6 for a color filter shown in Table 2 was used in place of the radiation-sensitive composition 1 for a color filter. Was formed.

[0069]

[Table 6]

When color pixels were formed as described above, a color filter could be formed without leaving undissolved substances in non-pixel portions on the substrate. Even after being left at room temperature for three days as in Example 1, a color filter could be formed without leaving undissolved matter in the non-pixel portion on the substrate.

[0071]

Example 5 A green pixel was prepared in the same manner as in Example 1 except that the radiation-sensitive composition 7 for a color filter shown in Table 2 was used instead of the radiation-sensitive composition 1 for a color filter. Was formed.

[0072]

[Table 7]

When color pixels were formed as described above, a color filter could be formed without leaving undissolved substances in non-pixel portions on the substrate. Even after being left at room temperature for three days as in Example 1, a color filter could be formed without leaving undissolved matter in the non-pixel portion on the substrate.

[0074]

Example 8 A green pixel was prepared in the same manner as in Example 1 except that the radiation-sensitive composition 7 for a color filter shown in Table 2 was used instead of the radiation-sensitive composition 1 for a color filter. Was formed.

[0075]

[Table 8]

When color pixels were formed as described above, a color filter could be formed without leaving undissolved substances in non-pixel portions on the substrate. Even after being left at room temperature for three days as in Example 1, a color filter could be formed without leaving undissolved matter in the non-pixel portion on the substrate.

[0077]

When a pixel is formed using the radiation-sensitive composition for a color filter according to the present invention, undissolved matter of the radiation-sensitive composition does not remain in the non-pixel portion on the substrate. Color pixels having excellent adhesion to the substrate can be uniformly formed without unevenness.

Therefore, the color pixels formed using the radiation-sensitive composition according to the present invention have no risk of peeling off from the substrate, and the obtained color filter has excellent transmittance or contrast.

When the radiation-sensitive composition for a color filter according to the present invention is used, a high-performance color filter as described above can be produced with an excellent yield.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuo Bessho 2--11-24 Tsukiji, Chuo-ku, Tokyo Japan Synthetic Rubber Co., Ltd. (56) References JP-A-2-153902 (JP, A) ( 58) Field surveyed (Int.Cl. ⁷ , DB name) G02B 5/20 101 G02B 5/22 G03F 7/004 501

Claims (2)

(57) [Claims] 1. A pigment, [B] a binder polymer, [C] a radiation-sensitive compound, [D] a solvent, and [E] at least one acid in a molecule having a molecular weight of 1,000 or less. contains at least one organic carboxylic acid compound having a group, the pigment (a) is a binder polymer (B) 100-fold
The organic carboxylic acid compound (E) is contained in an amount of 10 to 1000 parts by weight with respect to the
Phosphate, an aliphatic dicarboxylic acid, Oyo aliphatic tricarboxylic acid
At least selected from finely aromatic dicarboxylic acid 1 Tanedea
The color filter radiation-sensitive composition characterized by that. 2. A color filter formed from the radiation-sensitive composition for a color filter according to claim 1.