JPH09197116A - Photosensitive colored composition for color filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a colored compsn. suppressing the yellowing of a resin in the compsn. due to heat and the lowering of the transmissivity by the yellowing, having satisfactory sensitivity when a glass mask is used as a mask at the time of pattern exposure and capable of forming a pattern of a taper shape. SOLUTION: This colored compsn. consists essentially of a resin which is cured with an acid, a crosslinking agent, an optical acid generating agent, a pigment, a dispersant and a solvent. A copolymer contg. 30-70% p- hydroxystyrene is used as the resin and a triazine deriv. having a trihalomethyl group is used as the optical acid generating agent by 0.5-40 pts.wt. per 100 pts.wt. of the resin.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a photosensitive coloring composition for a color filter for forming a color filter used in a color liquid crystal display, and more specifically, it has high sensitivity, excellent heat resistance and a tapered shape. The present invention relates to a photosensitive coloring composition for a color filter, which can efficiently produce a color filter having a fine pattern with a forward taper with an excellent yield.

[0002]

2. Description of the Related Art Conventionally, as a photosensitive coloring composition for producing a color filter, a radical polymerization type photosensitive coloring composition containing a polyfunctional acrylate and a photopolymerization initiator in an acrylic resin in which a pigment is dispersed is mainly used. Used in the
No. 152449). Although the system using the radical polymerization has high sensitivity, it is difficult to form a pattern in an oxygen atmosphere because it is easily affected by oxygen during exposure, and a large amount of exposure is required. Therefore, it is necessary to form an oxygen blocking film and perform exposure in a state in which it is hardly affected by oxygen, which complicates the process.

To solve such problems, a resin containing phenol curable by an acid, a crosslinking agent having an N-methylol structure, and a photoacid generator disclosed in Japanese Patent Application Laid-Open No. 4-163552 are disclosed. There is a photosensitive coloring composition comprising a pigment. It is well known that a chemically amplified photosensitive composition utilizing this acid-catalyzed reaction has high sensitivity and high resolution, and the pattern shape obtained by this photosensitive composition is vertically vertical. It was a feature. A method for forming a pattern using this photosensitive composition is to apply the composition on a substrate, generate an acid by pattern exposure, heat the exposed substrate, and cure the resin by an acid-catalyzed crosslinking reaction, A pattern can be formed by alkali development.

However, when a pattern is formed with a photosensitive coloring composition using a novolak resin or a homopolymer of p-hydroxystyrene as a resin containing phenol, heat resistance is poor, and the resin is yellowed by heating to cause a coloring resin layer. In some cases, a phenomenon that the transmittance of the film decreases. Furthermore, the taper shape is vertically vertical and does not satisfy the forward taper shape required by the color filter.

Further, when an onium salt is used as the photo-acid generator, sufficient sensitivity cannot be obtained by pattern exposure with a glass mask, and the formed pattern may have an inverse taper shape or pattern peeling may occur. It was

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to prevent yellowing of a resin due to heat and a decrease in transmittance due to the yellowing. To provide a photosensitive coloring composition for a color filter, which has improved heat resistance and has sufficient sensitivity even when a glass mask is used as a mask at the time of pattern exposure and which can form a pattern having a forward tapered shape. It is in.

[0007]

In order to solve the above-mentioned problems, the present invention has a photosensitive material for a color filter containing an acid-curable resin, a crosslinking agent, a photo-acid generator, a pigment, a dispersant, and a solvent as main components. In the coloring composition, the p-hydroxystyrene copolymerization ratio of 30 is used as the acid-curable resin.
˜70% of the copolymer is used, a trihalomethyl group-containing triazine derivative is used as the photoacid generator, and the addition amount of the photoacid generator is 0.5 with respect to 100 parts by weight of the acid-curable resin. Provided is a photosensitive coloring composition for a color filter, which is characterized in that the content is about 40 parts by weight.

Hereinafter, the present invention will be described in detail. As the copolymer having a p-hydroxystyrene structure of 30 to 70% used for the acid-curable resin in the present invention, p
A copolymer containing -hydroxystyrene and one or more monomers such as an acrylic acid-based monomer, a methacrylic acid-based monomer, styrene, maleic acid, fumaric acid, and phenylmaleimide can be used.

As the acrylic acid-based monomer, acrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, 2-hydroxyethyl acrylate, benzyl acrylate and the like can be used, and the methacrylic acid-based monomer can be methacrylic acid. Acid, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methacrylic acid 2
-Hydroxyethyl, benzyl methacrylate and the like can be used. Particularly, from the viewpoint of improving heat resistance, a copolymer with an acrylic acid-based monomer or a methacrylic acid-based monomer is preferable.

The copolymerization ratio of p-hydroxystyrene in this copolymer is 30 to 70%. If it is less than 30%, the sensitivity is lowered and a pattern is not formed even if the exposure amount is increased at the time of pattern exposure. If it is more than 70%, the resolution is improved but the effect of improving heat resistance is not exhibited. When the copolymer having the composition of the present invention is used, the change in transmittance due to heating at 230 ° C. for 1 hour is significantly improved as compared with the homopolymer of p-hydroxystyrene.

Examples of the cross-linking agent in the present invention include methylolated urea, urea resin, methylolated melamine,
Butyrolylated melamine, methylol guanamine or alkyl ethers of these compounds can be used, and the alkyl ether compound is more preferred from the viewpoint of high thermal stability. The alkyl group of this alkyl ether is preferably an alkyl group having 1 to 5 carbon atoms. In particular, as the alkyl ether compound, an alkyl ether compound of hexamethylolmelamine is more preferable from the viewpoint of sensitivity. The amount of the crosslinking agent added is preferably 10 to 100 parts by weight with respect to 100 parts by weight of the resin.

Examples of the trihalomethyl group-containing triazine derivative used as the photoacid generator in the present invention include 2,4,6-tris (trichloromethyl) -s-triazine and 2- (p-methoxystyryl) -4,6. -Bis (trichloromethyl) -s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxyphenyl) -4,6-bis (trichloromethyl) -s- Triazine, 2- (p-chlorophenyl) -4,6-bis (trichloromethyl) -s-
Triazine, 2- (4'-methoxy-1'-naphthyl)
-4,6-bis (trichloromethyl) -s-triazine, 2- (p-methylthiophenyl) -4,6-bis (trichloromethyl) -s-triazine and the like can be used.

These trihalomethyl group-containing triazine derivatives have an absorption edge near a wavelength of 300 to 400 nm and generate an acid by light in a longer wavelength region than an onium salt, so that they are used as a mask during pattern exposure. Even when a mask is used, it is possible to form a pattern with sufficient sensitivity.

These trihalomethyl group-containing triazine derivatives may be used alone or as a mixture, and the addition amount thereof is a resin which is cured by the above acid.
-0.5 to 40 parts by weight with respect to 100 parts by weight of the copolymer having a hydroxystyrene structure. If it is added in an amount of less than 0.5 part by weight, the amount of acid generated is insufficient, the crosslinking reaction does not proceed sufficiently, and a pattern cannot be formed. On the other hand, if it is added in an amount of more than 40 parts by weight, the amount of acid generated is too large and the acid diffuses into the unexposed area due to heating after the pattern exposure to cause a crosslinking reaction, resulting in a decrease in resolution.

The pigment used in the present invention is red (Re
d) as C.I. I. Pig. 9, 97, 122, 12
3, 149, 168, 177, 180, 192, 215
For example, as green, C.I. I. Pig.
7, 36, and blue (Blue) include C.I. I. Pig.
15: 3, 15: 6, 22, 60, 64, yellow (Yel
low) is C.I. I. Pig. 12, 20, 83,
86, 138, 139, 154, purple (Violet)
As C.I. I. Pig. 23 is generally used.

These pigments may be used alone or as a mixture, and the addition amount thereof is based on 100% by weight of the total solid content of the photosensitive coloring composition for a color filter according to the present invention. Used at 10-60% by weight.

As the dispersant in the present invention, a surfactant, a pigment derivative, manufactured by Zeneca Corporation: "Solspers"
A wide range of such as can be used.

As the solvent in the present invention, toluene,
Xylene, ethyl cellosolve, ethyl cellosolve acetate, diethylene glycol dimethyl ether, cyclohexanone, etc. are used, and these solvents may be used alone or in combination. The amount of these solvents added is preferably such that the concentration of the total solid content in the photosensitive colored composition for a color filter of the present invention is about 5 to 50% by weight.

The photosensitive coloring composition for color filters of the present invention may further contain additives, if necessary.
Specific examples of such additives include a dissolution promoter, an adhesion promoter, an antioxidant, an ultraviolet absorber, and a sensitizer.

An example of a method for producing a color filter using the photosensitive coloring composition for a color filter of the present invention will be described below. A color filter using the photosensitive color composition for a color filter of the present invention, the entire surface of the photosensitive color composition for a color filter of the present invention is coated on a transparent substrate and dried,
Pattern exposure from the substrate to generate an acid in the composition,
The composition is heated to cure, and the composition is developed with an alkaline developer to leave the cured composition in a pattern to form a colored resin layer, and a series of steps including these is repeated to form a colored resin layer on the same substrate. It can be manufactured by a process of forming a colored resin layer.

As the heating method, a heating device such as an oven or a hot plate can be used, and the temperature is 7
A temperature of 0 to 150 ° C is suitable.

Examples of the alkaline developer include inorganic alkalis such as sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate, alkylamines such as triethylamine, alcohol amines such as triethanolamine, and tetramethylammonium hydroxide. Quaternary ammonium salts such as and the like can be used.

If desired, other additives such as a surfactant, a wetting agent, and an organic solvent may be added to the alkaline developer.

The present invention relates to an acid-curable resin in the constitution of a photosensitive coloring composition for a color filter, which comprises an acid-curable resin, a crosslinking agent, a photo-acid generator, a pigment, a dispersant, and a solvent as main components. As a result, by using a copolymer having a limited copolymerization ratio of p-hydroxystyrene structure, it is possible to suppress yellowing of the resin due to heat and the accompanying reduction in transmittance, and an effect of improving heat resistance is exhibited. Due to this action, the manufactured color filter has sufficient heat resistance even when heated at 230 ° C. for 1 hour.

Further, by using a trihalomethyl group-containing triazine derivative as the photo-acid generator,
Efficiently absorbs light having a wavelength near 400 nm, and exhibits an action of generating an acid. Due to this action, it is possible to form a pattern with sufficient sensitivity even when a glass mask is used as a mask at the time of pattern exposure, as compared with the conventional photoacid generator, onium salt.

Further, by using the photosensitive coloring composition for a color filter of the present invention, in addition to achieving both sensitivity and heat resistance, the composition and composition ratio of the copolymer and the addition amount of the trihalomethyl group-containing triazine derivative can be adjusted. When the amount is 0.5 to 40 parts by weight with respect to 100 parts by weight of the acid-curable resin, it is possible to achieve a forward tapered shape of the pattern.

[0027]

Embodiments of the present invention will be described below. A copolymer resin having a p-hydroxystyrene structure is used as the acid-curable resin, and a trihalomethyl group-containing triazine derivative is used as the photoacid generator.
First, a photosensitive coloring composition for a color filter containing a cross-linking agent, a pigment, a dispersant and a solvent is first coated on a transparent substrate with a spinner, a roll coater or the like and dried. next,
An acid is generated by performing pattern exposure on the substrate using an ultra-high pressure mercury lamp or the like. Next, the exposed substrate is heated and cured using an oven or a hot plate.
The heating temperature at this time is preferably 70 to 150 ° C. The heating time depends on the temperature, but is about 30 seconds to 30 minutes. Next, the exposed and heated substrate is developed with an alkali developing solution to leave the cured photosensitive coloring composition in a pattern to form a colored resin layer. By repeating this series of steps twice more, colored resin layers of red (R), blue (B), and green (G) can be formed on the same substrate to obtain a color filter.

[0028]

【Example】

<Example 1> (A) Preparation of photosensitive coloring composition As a resin that is cured by an acid, a 1: 1 copolymer of p-hydroxystyrene and methyl methacrylate (manufactured by Maruzen Petrochemical Co., Ltd .: "Maruka Linker"). CMM "), hexamethoxymethylmelamine (manufactured by Sanwa Chemical Co., Ltd .:" Nikalac MW-30M ") as a cross-linking agent, and 2- (p-methoxyphenyl) -4,6-
Bis (trichloromethyl) -s-triazine (Midori Kagaku Co., Ltd .: “TAZ-104”) was used, cyclohexanone (Kanto Kagaku Co., Ltd.) was used as a solvent, and a dispersant (Zeneca Co., Ltd .: "Solspers") "S2
Using 4000GR "and" S5000 "at a ratio of 1: 1,
As a red pigment (Ciba Geigy Co., Ltd .: "Chlomophthalsan Red"), as a green pigment (Toyo Ink Mfg. Co., Ltd.)
(Manufactured by: "Rionol Green"), as a blue pigment (B.
A. S. F. (Manufactured by: "Heliogen Blue") was used.
First, a resin, a pigment, and a dispersant were dispersed by a disperser, and then a crosslinking agent and a photoacid generator were added to prepare red, green, and blue photosensitive coloring compositions, respectively. This composition ratio was 9 g of pigment, 0.9 g of dispersant, 4 g of cross-linking agent and 1 g of photo-acid generator with respect to 10 g of resin, and the concentration of total solid content in the photosensitive coloring composition was 20% by weight. So the solvent was added.

(B) Production of Color Filter A blue photosensitive coloring composition was spin-coated on a glass substrate and dried at 70 ° C. in an oven. Next, exposure (50 mJ / cm ² ) was performed using a predetermined glass mask. This was heated to 110 ° C. to crosslink and cure the photosensitive coloring composition. After this, 0.5% sodium hydroxide 0.5
% Aqueous sodium carbonate solution and thoroughly washed with water. This was rubbed with a soft sponge to remove the pigment that had not adhered to the substrate without curing, and was washed with water and dried to form a blue pattern. The above series of steps was similarly repeated on the same substrate to form green and red patterns. The film thickness of each color was 1.4 μm. The color pattern thus obtained was highly precise and the shape was also good in a forward tapered shape. Further, the heat resistance was high with little spectral change even when heated at 230 ° C. for 1 hour.

Example 2 (A) Preparation of Photosensitive Coloring Composition A 1: 1 copolymer of p-hydroxystyrene and butyl acrylate (made by Maruzen Petrochemical Co., Ltd .: “Marcalinker CBA”), hexamethoxymethylmelamine (manufactured by Sanwa Chemical Co., Ltd .: “Nikalac MW-30M”) as a crosslinking agent, and 2- (p-methoxyphenyl) -4 as a photoacid generator. , 6-
Bis (trichloromethyl) -s-triazine (Midori Kagaku Co., Ltd .: “TAZ-104”), ethyl cellosolve acetate (Kanto Kagaku Co., Ltd.) was used as a solvent, and Zeneca Co., Ltd. was used as a dispersant. "S2" of "Solspers"
Using 4000GR "and" S5000 "at a ratio of 1: 1,
Ciba Geigy Co., Ltd. as a red pigment: “Chlomophthalsan Red”, and Toyo Ink Mfg. Co., Ltd. as a green pigment:
"Rionol Green", B. as a blue pigment. A. S.
F. Company: "Heliogen Blue" was used. Thereafter, in the same manner as in Example 1, first, a resin, a pigment, and a dispersant were dispersed by a disperser, and then a crosslinking agent and a photoacid generator were added to prepare red, green, and blue photosensitive coloring compositions, respectively. did. The composition ratio of the photosensitive coloring composition is such that, for 10 g of the resin, 9 g of a pigment, 0.9 g of a dispersant, 4 g of a crosslinking agent, and 1 g of a photoacid generator, and the total solid content in the photosensitive coloring composition is The solvent was added so that the concentration became 20% by weight.

(B) Production of Color Filter A blue photosensitive coloring composition was spin-coated on a glass substrate and dried at 70 ° C. in an oven. Next, exposure (50 mJ / cm ² ) was performed using a predetermined glass mask. This was heated to 110 ° C. to crosslink and cure the photosensitive coloring composition. After this, 0.3% sodium hydroxide 0.7
% Aqueous sodium carbonate solution and thoroughly washed with water. This was rubbed with a soft sponge to remove the pigment that had not yet hardened and was still attached to the substrate, followed by washing with water and drying to form a pattern. The above series of steps was similarly repeated on the same substrate to form green and red patterns. The film thickness of each color was 1.4 μm. The color pattern thus obtained was highly precise and the shape was also good in a forward tapered shape. Further, the heat resistance was high with little spectral change even when heated at 230 ° C. for 1 hour.

<Comparative Example 1, when the polymerization ratio of p-hydroxystyrene is different> (A) Preparation of photosensitive coloring composition As a resin which is cured by an acid, a homopolymer of p-hydroxystyrene (Maruzen Petrochemical Co., Ltd.). (Manufactured by: Maruka Linker M S-2)), hexamethoxymethyl melamine (manufactured by Sanwa Chemical Co., Ltd .: “Nikalac MW-30M”) as a cross-linking agent, and 2- (p
-Methoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine (Midori Kagaku KK: "TAZ
-104 "), ethyl cellosolve acetate (manufactured by Kanto Chemical Co., Inc.) as a solvent, and" Solsperse "manufactured by Zeneca Co., Ltd. as a dispersant at a ratio of 1: 1 with" S24000GR "and" S5000 ". As a red pigment, Ciba Geigy Co., Ltd .: “Chromophthal Sun Red”, as a green pigment, Toyo Ink Mfg. Co., Ltd .: “Rionol Green”, and as a blue pigment, B.I. A. S. F. Company: "Heliogen Blue" was used. Hereinafter, as in Example 1, first, the resin, the pigment, and the dispersant were dispersed by a disperser, and then the cross-linking agent,
Photoacid generators were added to prepare red, green and blue photosensitive coloring compositions. The composition ratio of the photosensitive coloring composition,
To 9 g of the resin, 9 g of pigment, 0.9 g of dispersant,
The crosslinking agent was 4 g and the photo-acid generator was 1 g, and the solvent was added so that the concentration of the total solid content in the photosensitive coloring composition was 20% by weight.

(B) Production of Color Filter A blue photosensitive coloring composition was spin-coated on a glass substrate and dried at 70 ° C. in an oven. Next, exposure (50 mJ / cm ² ) was performed using a predetermined glass mask. This was heated to 110 ° C. to crosslink and cure the photosensitive coloring composition. After this, 0.3% sodium hydroxide 0.7
% Aqueous sodium carbonate solution and thoroughly washed with water. This was not rubbed with a soft sponge to remove the pigment still adhering to the substrate, washed with water and dried to form a pattern. The above series of steps was similarly repeated on the same substrate to form green and red patterns. The film thickness of each color is 1.
It was 4 μm. In the coloring pattern thus obtained, the transmittance was decreased by heating at 230 ° C. for 1 hour, and particularly in the blue coloring pattern, the transmittance peak was decreased by almost 20%. Moreover, the taper shape was not a normal taper shape, but was erected vertically.

<Comparative Example 2, Different Photoacid Generators> (A) Preparation of Photosensitive Coloring Composition As a resin which is cured by an acid, a 1: 1 copolymer of p-hydroxystyrene and methyl methacrylate ( Maruzen Petrochemical Co., Ltd .: “Maruka Linker CMM”), hexamethoxymethyl melamine (Sanwa Chemical Co., Ltd .: “Nicalac MW-30M”) as a cross-linking agent, and an onium salt as a photoacid generator. Triphenylsulfonium trifluoromethanesulfonate (Midori Kagaku Co., Ltd.)
(Manufactured by: "TPS-105"), cyclohexanone (manufactured by Kanto Chemical Co., Inc.) as a solvent, and "S24000GR" and "S5000" manufactured by Zeneca Co., Ltd. as a dispersant at a ratio of 1: 1. Ciba Geigy Co., Ltd .: “Chlomophthalsan Red” as a red pigment, Toyo Ink Mfg. Co., Ltd .: “Rionol Green” as a green pigment, and B.I. A. S. F. Company: "Heliogen Blue" was used. First, a resin, a pigment, and a dispersant were dispersed by a disperser, and thereafter, a crosslinking agent and a photoacid generator were added to prepare red, green, and blue photosensitive coloring compositions, respectively. The composition ratio of the photosensitive coloring composition is 10 g of the resin,
9 g of pigment, 0.9 g of dispersant, 4 g of crosslinking agent, 1 photoacid generator
g, and the concentration of the total solids in the photosensitive coloring composition is 20.
The solvent was added to make up the weight%.

(B) Production of color filter A blue photosensitive coloring composition was spin-coated on a glass substrate and dried at 70 ° C. in an oven. Next, exposure (50 mJ / cm ² ) was performed using a predetermined glass mask. This was heated to 110 ° C. to crosslink and cure the photosensitive coloring composition. This is 0.5% sodium hydroxide 0.5%
It was developed with an aqueous solution of sodium carbonate and thoroughly washed with water. However, the crosslinking reaction did not proceed sufficiently, and the pattern was not resolved.

<Comparative Example 3, when the amount of the photo-acid generator added is large> (A) Preparation of photosensitive coloring composition As a resin curable by an acid, 1: 1 of p-hydroxystyrene and methyl methacrylate is used. Polymer (Maruzen Petrochemical Co., Ltd .: “Maruka Linker CMM”) is used, and hexamethoxymethyl melamine (Sanwa Chemical Co., Ltd .: “Nikkalac MW-30M”) is used as a cross-linking agent to generate a photoacid. 2- (p-methoxyphenyl) -4,6 as an agent
-Bis (trichloromethyl) -s-triazine (Midori Kagaku Co., Ltd .: "TAZ-104") was used, cyclohexanone (Kanto Kagaku Co., Ltd.) was used as a solvent, and Geneca Co., Ltd. was used as a dispersant: "S24" of "Solsperth"
"00GR" and "S5000" at a ratio of 1: 1 are used as red pigments by Ciba Geigy Co., Ltd .: "Chromophthal Sun Red", green pigments by Toyo Ink Mfg. Co., Ltd .: "Rionol Green", blue pigments. As B. A. S. F. Company: "Heliogen Blue" was used. First, a resin, a pigment, and a dispersant were dispersed by a disperser, and thereafter, a crosslinking agent and a photoacid generator were added to prepare red, green, and blue photosensitive coloring compositions, respectively. The composition ratio of the photosensitive coloring composition is the resin 1
0 g, pigment 9 g, dispersant 0.9 g, crosslinking agent 4
and 5 g of the photoacid generator, and the solvent was added so that the concentration of the total solid content in the photosensitive coloring composition was 20% by weight.

(B) Production of Color Filter A blue photosensitive coloring composition was spin-coated on a glass substrate and dried at 70 ° C. in an oven. Next, exposure (50 mJ / cm ² ) was performed using a predetermined glass mask. This was heated to 110 ° C. to crosslink and cure the photosensitive coloring composition. This is 0.5% sodium hydroxide 0.5%
It was developed with an aqueous solution of sodium carbonate and thoroughly washed with water. In the formed pattern, the acid diffused to the unexposed portion to cause a crosslinking reaction, the line width was thickened and the resolution was lowered. Further, the taper shape was an inverse taper.

[0038]

The present invention having the above configuration has the following effects. That is, a resin that is cured by an acid, a cross-linking agent, a photo-acid generator, a pigment, a dispersant, and a known property of a photosensitive coloring composition for a color filter mainly composed of a solvent, that is, high sensitivity, In addition to the effect of not being affected by oxygen at the time of exposure, by using a copolymer having a copolymerization ratio of p-hydroxystyrene of 30 to 70% as an acid-curable resin, 230 ° C. It is possible to form a highly heat-resistant colored pattern that hardly changes the transmittance even when heated for a long time. This has the effect that the transmittance of the colored pattern does not change even when the liquid crystal display is manufactured at a high temperature.

A trihalomethyl group-containing triazine derivative is used as the photo-acid generator, and the addition amount is 0.5 to 40 parts by weight based on 100 parts by weight of the acid-curable resin. Even if an inexpensive glass mask is used as the mask, it has sufficient sensitivity and can form a pattern.

Further, by using the photosensitive coloring composition for a color filter of the present invention, in addition to the effect of achieving both sensitivity and heat resistance, the composition and composition ratio of the copolymer and the addition of the trihalomethyl group-containing triazine derivative are added. It is possible to arbitrarily change the sensitivity characteristic curve of the photosensitive coloring composition by a combination of the amounts, control of the tapered shape, that is, it is possible to achieve a forward tapered shape of the pattern, and the occurrence of peeling of the pattern, etc., Has the effect.

Further, by using this photosensitive coloring composition for a color filter, there is an effect that a color filter having excellent heat resistance and high-definition pixels can be efficiently manufactured with an excellent yield.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuyoshi Takemura 1-5-1 Taito, Taito-ku, Tokyo Within Toppan Printing Co., Ltd. (72) Inventor Yasuhiro Shima 1-5-1 Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. (72) Inventor Tsuneo Oki 1-5-1 Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd.

Claims (1)

[Claims] 1. A photosensitive coloring composition for a color filter comprising an acid-curable resin, a cross-linking agent, a photo-acid generator, a pigment, a dispersant, and a solvent as main components, wherein the acid-curable resin is p- Copolymerization ratio of hydroxystyrene is 30
˜70% of the copolymer is used, a trihalomethyl group-containing triazine derivative is used as the photoacid generator, and the addition amount of the photoacid generator is 0.5 with respect to 100 parts by weight of the acid-curable resin. The photosensitive coloring composition for color filters is characterized by being -40 parts by weight.