JPH08188730A - Electro-deposition coating composition for color filter - Google Patents

Abstract

PURPOSE: To provide the subject composition containing a specific resin, a curing agent, a cure accelerator and a base as essential components, curable to get a cured product resistant to post-treatment condition at a low temperature not to cause the thermal degradation of a resist, giving uniform heat history of colored layer and capable of decreasing the scattering of mechanical strength and the change of hue. CONSTITUTION: This composition contains, as essential components, (A) a resin having OH and an anionic group (e.g. carboxyl group) [e.g. a copolymer of (meth)acrylic acid and an OH-containing (meth)acrylic acid ester such as hydroxyethyl (meth)acrylate or a resin produced by adding a maleic acid compound to a polybutadiene resin and reacting the product with an epoxy compound], (B) a curing agent such as amino resin, (C) a cure accelerator such as dinonylnaphthalenesulfonic acid and (D) a base such as an alkylamine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeposition coating composition used for producing a color filter used for color display of a liquid crystal display device or the like by an electrodeposition method, and more specifically, cured at a low temperature. The present invention relates to an electrodeposition coating composition for a color filter capable of

[0002]

2. Description of the Related Art In recent years, in a liquid crystal display device or the like, in order to display a color image, a color filter having a fine colored layer of red, green, and blue, and a light shielding layer if necessary, is mounted on a transparent substrate. Is increasing. Known methods for producing the color filter include (1) dyeing method, (2) dye and / or pigment dispersion (color resist) method, (3) printing method, and (4) electrodeposition method. Among these manufacturing methods, the electrodeposition method has attracted attention because of its relatively simple steps, high utilization efficiency of coloring materials and high productivity.

As the electrodeposition method, for example, a transparent electrode having conductivity on a substrate is formed in advance in a pattern matching the pixel pattern of a color filter, and a voltage is applied to the transparent electrode portion to be colored to perform electrodeposition. Then, a method of forming a color filter by repeating heating and curing for each color, or applying a resist on the transparent conductive layer formed on the entire surface of the substrate, and after exposing and developing the pattern, the exposed transparent conductive layer There is known a method in which a colored layer is formed on the above by electrodeposition, and after heating and curing, pattern exposure, development and electrodeposition are repeated as necessary to form a color filter on a resist other than the colored layer.

The latter method is preferable because it has a high degree of freedom in the arrangement of pixel patterns, but the heat curing for forming the colored layer left at least a portion of the resist to be developed and electrodeposited after the second curing. As it is performed in the state, heat deterioration of the resist occurs and pattern exposure / development /
It is necessary to make each condition of repeated electrodeposition stronger than last time. Such problems do not occur unless heat curing is performed after electrodeposition, but the post-process cannot be performed because the colored layer immediately after being electrodeposited has adhesiveness or low mechanical strength. Therefore, it is necessary to heat cure after electrodeposition. on the other hand,
In the former method, electrodes with a pattern formed in advance are used, so it is possible to completely cure at each high temperature each time a colored layer is formed, but the thermal history differs for each colored layer, resulting in a difference in mechanical strength and a change in hue. Cheap.

[0005]

The object of the present invention is to solve the above-mentioned drawbacks and to form an electrodeposition film at a low temperature which does not cause thermal deterioration of the resist. It can be cured at low temperature to the extent that it has sufficient resistance to various process conditions, the thermal history of the colored layer at high temperature is constant, and there is little variation in mechanical strength and hue change, making it suitable for the electrodeposition method. It is intended to provide an electrodeposition coating composition for a color filter.

[0006]

Specifically, according to the present invention, (1) a resin having a hydroxyl group and an anionic group,
Provided is an electrodeposition coating composition for a color filter, which contains (2) a curing agent, (3) a curing accelerator and (4) a base as essential components.

The present invention will be described in more detail below. The resin having a hydroxyl group and an anionic group (hereinafter referred to as component (1)) contained as an essential component in the present invention has, for example, an acrylic resin, a polyester resin, a polybutadiene resin, a maleated oil having a hydroxyl group and an anionic group. Preferable examples include resins and epoxy resins. Examples of the anionic group include a carboxyl group, a sulfonium group and a phosphonium group, and a carboxyl group is particularly preferable. Suitable examples of the component (1) include an acrylic resin having a hydroxyl group and a carboxyl group, a polybutadiene resin having a hydroxyl group and a carboxyl group, and the like.

An acrylic resin having a hydroxyl group and a carboxyl group is a (meth) acrylic acid ester having (meth) acrylic acid (((meth) acrylic means acrylic or methacrylic. The same applies hereinafter) and a hydroxyl group. Kinds (for example, hydroxyethyl (meth) acrylate, hydroxybutyl (meth) acrylate, (meth)
It can be obtained by a method such as copolymerization of an adduct of acrylic acid and an epoxy compound). If necessary, various unsaturated compounds copolymerizable with these may be further used as a copolymerization component.

The polybutadiene resin having a hydroxyl group and a carboxyl group can be obtained by a method of adding a maleic acid to a polybutadiene resin and then reacting with an epoxy compound.

The amount of the hydroxyl group contained in the component (1) is not particularly limited, but in consideration of curability and water resistance, it is usually 0.1 to 3 gram equivalent per kg of the resin, preferably 0.1.
It is preferably 3 to 2 gram equivalents. The amount of the anionic group is usually 0.3 to 10 gram equivalents per 1 kg of resin, considering the stability of the electrodeposition coating composition of the present invention in water, the electrodeposition characteristics, and the surface condition of the electrodeposition film, Preferably 0.6
It is desirable to be ~ 5 gram equivalent. The molecular weight of the component (1) is preferably a weight average molecular weight of 5,000 to 20.
0000, particularly preferably 10,000 to 150,000 is desirable.

The curing agent used as an essential component in the present invention (hereinafter referred to as component (2)) is an amino resin,
Alternatively, a blocked isocyanate compound or the like that dissociates upon heating to reveal an isocyanate group,
Amino resins are especially preferred. The amino resin is a condensate of an amino compound and an aldehyde compound, or an alkyl etherified condensate modified product obtained by further modifying the condensate with alcohol. As amino compounds,
Melamine, urea, benzoguanamine and the like can be mentioned, with preference given to melamine. Examples of the aldehyde compound include formaldehyde and acetaldehyde, and formaldehyde is preferable. The alcohol for modifying the condensate preferably has 1 to 6 carbon atoms, particularly preferably 1 to 4 carbon atoms, specifically, methanol, ethanol, isopropanol, normal propanol, normal butanol, isobutanol, and tertiary. Butanol or a mixture thereof, and the like,
In particular, methanol and normal butanol in a weight ratio of 1:
Alcohols mixed in a ratio of 10 to 10: 1 are preferred.

The number of carbon atoms of the alkyl group in the alkyl ether of the alkyl etherified condensate modified product is preferably from 1 to 6, particularly preferably from 1 to 4, specifically, methyl, ethyl, isopropyl and normal propyl. , Normal butyl, isobutyl, tertiary butyl, or a mixed alkyl group thereof, and the like, and among them, a mixed group of a methyl group and a normal butyl group of 1:10 to 10: 1 (weight ratio) is particularly preferable.

In the above-mentioned amino resin, the number of residual primary amines and secondary amines after condensation of an amino compound with an aldehyde compound is 0 to 20 mol% with respect to the total number of primary amines before condensation, preferably Is 0 to 10 mol%
Is desirable. Further, the number of alkyl ether groups after modification of the aldehyde condensate with alcohol is preferably 60 mol% or more, and more preferably 80 mol% or more, relative to the total number of aldehyde condensation groups before modification.

The amino resin can be usually used as a solution using a solvent such as methanol, ethanol, isopropanol, methyl cellosolve, ethyl cellosolve, normal butyl cellosolve, ethylene glycol, propylene glycol, trimethylolpropane or glycerin. Of these amino resins, in particular, a condensate of melamine and formaldehyde, modified with methanol and normal butanol, by using an alkyl etherified condensate modified product of melamine origin, obtained from the electrodeposition coating composition of the present invention The storage stability of the electrodeposition liquid thus obtained can be improved. The modified product of an alkyl etherified condensation product derived from melamine has a weight average molecular weight of 800 to 1
It is desirable that it is 200, preferably 900 to 1100.

Although the content of the component (2) is not particularly limited,
Considering the curability and the mechanical strength of the resulting colored layer, the amount is preferably 10 to 150 parts by weight, and more preferably 15 to 100 parts by weight, relative to 100 parts by weight of the component (1).

As the curing accelerator (hereinafter referred to as component (3)) used as an essential component in the present invention, organic sulfonic acids (alkyl sulfonic acid, aromatic sulfonic acid, etc.), organic sulfonic acids are blocked with organic amine, etc. Examples thereof include (neutralized) compounds, sulfonic acid group-containing resins, acidic phosphoric acid alkyl esters, organic acid metal salts, organic tin compounds, organic tertiary amines, and mixtures thereof. Organic sulfonic acids, particularly aromatic compounds Sulfonic acid is preferred. Specific examples of the component (3) include methanesulfonic acid, p
-Toluenesulfonic acid, dodecylbenzenesulfonic acid,
Dinonylnaphthalene sulfonic acid, dinonyl naphthalene disulfonic acid, polymerizable unsaturated group-containing sulfonic acid (styrene sulfonic acid, vinyl sulfonic acid, acrylamidoalkyl sulfonic acid, etc.), polymerizable unsaturated group-containing sulfonic acid alkali metal salt Coalesce, copolymer of a polymerizable unsaturated group-containing sulfonic acid alkali metal salt, vinyl sulfonic acid resin,
Sulfonic acid group-containing polystyrene, dibutyltin diacetate, dibutyltin dilaurate, dimethyltin dilaurate, dibutyltin dichloride, triethylamine, α-picoline or a mixture thereof, and the like, any of which can be preferably used, but particularly Dinonylnaphthalene sulfonic acid is preferred.

The content of the component (3) is not particularly limited,
Considering the stability of the electrodeposition coating composition of the present invention, with respect to the total of 100 parts by weight of the component (1) and the component (2),
It is desirable that the amount is 0.01 to 15 parts by weight, preferably 0.1 to 5 parts by weight.

Inorganic bases such as ammonia, sodium hydroxide and potassium hydroxide are used as the base used as an essential component in the present invention (hereinafter referred to as component (4)); trimethylamine, diethylamine, triethylamine, tripropylamine, tributylamine. And the like; amines such as methylethanolamine, diethanolamine, diisopropanolamine, triethanolamine, dimethylaminoethanol, morpholine and the like, and mixtures thereof, and the like, and any of them can be preferably used, but among these, amines , Preferably alkylamine is desirable.

Although the content of the component (4) is not particularly limited,
Considering the solubility, dispersibility, and stability of the component (1) in water, the amount is 0.2 with respect to 1 equivalent of the anionic group in the component (1).
It is desirable that the amount is from to 1.2 equivalent, preferably from 0.4 to 0.9 equivalent.

The preferred combination mode of the above components (1) to (4) includes (1) an acrylic resin having a hydroxyl group and a carboxyl group, (2) an amino resin, (3) an organic sulfonic acid and (4) an amine. It is an electrodeposition coating composition containing as an essential component.

A more preferable combination of the components (1) to (4) is (1) an acrylic resin having a hydroxyl group and a carboxyl group, (2) a condensate of melamine and an aldehyde, and an alcohol having 1 to 6 carbon atoms. An electrodeposition coating composition containing, as essential components, a modified product of an alkyl etherified condensation product modified by (3), an aromatic sulfonic acid, and (4) an alkyl amine.

In the electrodeposition coating composition of the present invention, 70 to 200 parts by weight, preferably 80 parts by weight of water is mixed with 100 parts by weight of the component (1) at the time of mixing in order to uniformly mix or disperse the respective components. ~ 150 parts by weight can be added.

In the electrodeposition coating composition of the present invention, if necessary, in addition to the components (1) to (4), a dye, a pigment, an organic solvent,
A dye or pigment dispersion aid, a leveling agent, a viscosity modifier, an antifoaming agent, etc. may be contained.

Specific examples of dyes and pigments include azo-based dyes and
Anthraquinone-based, benzodifuran-based, condensed methine-based dyes; azo lake-based, anthraquinone-based, quinacridone-based, phthalocyanine-based, isoindolinone-based, thioindigo-based organic pigments; yellow lead, iron oxide, chrome vermilion, chrome green, Ultramarine, navy blue, cobalt blue,
Inorganic pigments such as cobalt green, emerald green, titanium white, and carbon black; or a mixture thereof and the like can be mentioned, and any of them can be preferably used. In using the dye and / or pigment, "COLOUR INDEX" or the like may be appropriately referred to. When it is necessary to color the electrodeposition coating composition of the present invention, these dyes and / or pigments can be preferably used. The content ratio of the dye and / or pigment is not particularly limited, but is usually 5 to the total amount of the electrodeposition coating composition of the present invention.
It is desirable to be 70% by weight, preferably 10 to 40% by weight.

Specific examples of the organic solvent include ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, ethylene glycol monophenyl ether, propylene glycol monomethyl ether,
Propylene glycol monophenyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether and other glycol ethers; acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, isophorone and other ketones; dibutyl ether, dioxane, tetrahydrofuran and other ethers; methoxybutanol, di Acetone alcohol, butanol, isopropanol and other alcohols; toluene, xylene, hexane and other hydrocarbons; ethyl acetate,
Esters such as butyl acetate, 2-methoxyethyl acetate, 2-methoxypropyl acetate, benzyl acetate, phenoxyethyl acetate, ethyl benzoate; acid amides such as dimethylformamide, N, N-dimethylacetamide, dimethylsulfoxide, or the like. Examples thereof include a mixture of these, and any of them can be preferably used.

The electrodeposition coating composition of the present invention can usually be obtained by a method of dispersing a mixture containing the above-mentioned components with a disperser (sand mill, pearl mill, roll mill, attritor, etc.). The obtained electrodeposition coating composition can be diluted with water to a solid content of 4 to 30% by weight, preferably 6 to 20% by weight, and then used as an electrodeposition liquid.

The obtained electrodeposition liquid can be used to form a colored layer on the conductive layer by a method such as electrodeposition coating on the conductive layer of the electrode substrate. At this time, the thickness of the colored layer when dried is not particularly limited, but is usually 0.3 to 5 μm, preferably 0.5 to 5 μm.
It is preferably 3 μm.

The voltage for electrodeposition coating is usually 5 to 500.
V, preferably 10 to 300 V direct current is desirable, and electrodeposition time is usually 3 to 300 seconds, preferably 5 to 2
00 seconds, the liquid temperature is usually 10 to 35 ° C., preferably 15 to 3
It is preferably 0 ° C. When the coating composition of the present invention is used, typically, after stopping energization, the electrode substrate is taken out from the electrodeposition solution, and the excess electrodeposition solution is washed with water or the like,
Usually 120 ° C or lower, preferably 60 ° C to 110 ° C;
The colored layer can be formed by drying under conditions of 0.5 minutes to 1 hour, preferably 3 to 30 minutes. In addition,
In order to improve the wettability between the electrode substrate and the electrodeposition liquid during electrodeposition, treatment such as ultrasonic irradiation or flowing down the electrodeposition liquid onto the surface of the electrode substrate may be performed before energization.

The colored layer can be produced in this manner, but it is possible to improve the weather resistance, chemical resistance and the like of the colored layer by further subjecting it to heat curing treatment or photocuring treatment, preferably heat curing treatment. it can. The heat curing treatment is usually 150 to 280 ° C, preferably 170 to 250 ° C;
It can be performed under the conditions of 5 minutes to 2 hours, preferably 15 minutes to 1 hour.

[0030]

EFFECT OF THE INVENTION The electrodeposition coating composition for color filters of the present invention can be cured with sufficient resistance to the conditions of the post-process even at a low temperature that does not cause thermal deterioration of the resist, and the heat history of the colored layer It becomes constant, and variations such as mechanical strength and hue changes can be reduced. Further, in the electrodeposition coating composition of the present invention, by using an alkyl etherified condensation product modified from melamine as a curing agent of component (2), the electrodeposition liquid obtained from the electrodeposition coating composition of the present invention is stored. The stability can be further increased.

[0031]

EXAMPLES The present invention will be described in more detail with reference to Synthesis Examples, Examples and Comparative Examples, but the present invention is not limited to these.

[0032]

[Synthesis Example 1] Synthesis of component (1) 1030 g of butoxyethanol was charged into a 5 liter reactor equipped with a stirrer, a condenser and a thermometer, and heated to 80 ° C under a nitrogen atmosphere. Then acrylic acid 154
g, butyl acrylate 1326 g, methyl methacrylate 240 g, hydroxyethyl acrylate 280 g
And a mixture of 56 g of azoisobutyronitrile were continuously added dropwise over 4 hours, and after the addition was completed, the reaction was continued at the same temperature for 2 hours. The component (1) thus obtained had an acid content of 1.03 gram equivalent / kg, a hydroxyl group content of 1.2 gram equivalent / kg, and a weight average molecular weight of 22,500 as determined by gel permeation chromatography (GPC).

The amount of acid and the amount of hydroxyl group are JIS K00.
It measured based on 70-1992. GPC measurement was carried out with tetrahydrofuran solvent, flow rate 1 cm ³ / min, column temperature 35.
It was measured at ° C. The molecular weight is in terms of polystyrene.

[0034]

Example 1 Colored electrodeposition liquid (Y-11, Y-21, Y-31 and Y-4
Preparation of 1) To 150 parts by weight of the component (1) obtained in Synthesis Example 1, the component (2) was added.
34 parts by weight (modified product of an alkyl etherified condensation product obtained by further modifying a condensate of melamine and formaldehyde with a mixture of methanol and normal butanol), component (3) (dinonylnaphthalene sulfonic acid) 2.7 parts by weight, component ( 4) 7.7 parts by weight of (triethylamine) and 135 parts by weight of water were mixed and sufficiently homogenized to obtain a resin composition.

Red, green, blue and black pigments were added to the resulting resin composition in the proportions shown in Table 1 and kneaded with a small three-roll mill until the average particle size was 0.2 μm or less. Then, four kinds of colored electrodeposition coating compositions were obtained. Then, deionized water was added with stirring so that the solid content was 10% by weight, to obtain colored electrodeposition liquids Y-11, Y-21, Y-31 and Y-41. When these electrodeposition liquids were stored at room temperature, high molecular weight did not occur even after 6 months. Therefore, it was found that the electrodeposition liquid prepared from the electrodeposition coating composition of the present invention has excellent storage stability.

[0036]

Comparative Example 1 Colored electrodeposition liquid (Y-12 (red), Y-22 (green), Y-32
Preparation of (blue) and Y-42 (black)) Except that the component (3) was not added in Example 1, electrodepositing solutions Y-12, Y-22, Y-32 and Y were prepared.
-42 was obtained.

[0037]

Example 2 Production of Color Filter 1.1 mm-thick Corning 7059 glass having a 100 nm-thick ITO (indium-tin oxide) film on its surface (trade name, manufactured by Corning Incorporated, hereinafter referred to as original plate 1)
, Positive photoresist (manufactured by Tokyo Ohka Kogyo Co., Ltd.,
The product name “OFPR-800”) was applied by a spin coating method so that the film thickness after drying would be 3 μm.

Then, a UV exposure apparatus (manufactured by Oak Manufacturing Co., Ltd., trade name "JL-330") having an ultra-high pressure mercury lamp through a mask having a predetermined light-shielding pattern 2 (FIG. 1).
0 ") was used to irradiate the light with an ultrahigh pressure mercury lamp at 70 mJ / cm ² . Then, the exposed portion 1 was developed with an aqueous solution of tetramethylammonium hydroxide having a concentration of 2.4% by weight.
The positive photoresist in the portion corresponding to was selectively removed, and the ITO film surface was exposed. After washing and drying, original plate 1
Was used as the anode, and a stainless steel beaker containing the electrodeposition liquid (Y-41) kept at 25 ° C was used as the cathode, and DC voltage 25V was applied at 25 ° C for 60 seconds for electrodeposition. Original plate 1
Was removed from the stainless steel beaker, washed with ion-exchanged water, and dried (70 ° C, 5 minutes), 90 ° C, 10
Heat treated in minutes. As a result, a black matrix pattern (black coating film) was obtained.

Then, exposure was carried out at 70 mJ / cm ² using a mask having a pattern shown in FIG. 2 and development was carried out with an aqueous solution of tetramethylammonium hydroxide having a concentration of 3.0% by weight. As a result, a change was observed in the black coating layer. Then, the ITO film corresponding to the exposed portion 3 was exposed. After washing and drying
The original plate 1 was immersed in a stainless steel beaker containing an electrodeposition solution (Y-11), and a DC voltage of 25 V was applied at 25 ° C. for 60 seconds in the same manner as in the case of the electrodeposition solution (Y-41). I wore it. The original plate 1 was pulled up from a stainless steel beaker, washed with ion-exchanged water, dried, and heat-treated at 90 ° C. for 10 minutes. As a result, a red mosaic pixel pattern was obtained.

Next, the entire surface of the original plate 1 was irradiated with ultraviolet rays of 200 mJ / cm ² , and then 1.5% containing 5% by weight of a surfactant (trade name “Perex NBL” manufactured by Kao Corporation).
Develop with a weight% sodium hydroxide aqueous solution, remove the residual photoresist other than the applied colored coating film portion, wash with water and dry, and then again use "OFPR-800" (trade name, manufactured by Tokyo Ohka Kogyo Co., Ltd.). Spin coating was performed so that the film thickness was 3 μm. The portion 5 corresponding to the mosaic pattern is exposed (70 mJ) so as to be adjacent to the red mosaic pattern of the original plate 1 on which the photoresist has been recoated (the position shown in FIG. 3).
/ Cm ² ) and developed with a tetramethylammonium hydroxide aqueous solution having a concentration of 2.4% by weight, no change was observed in the black and red coating layers, and the ITO film corresponding to the exposed portion 5 was exposed. After washing with water and drying, the original plate 1 was electrodeposited using the electrodeposition liquid (Y-21) by applying a DC voltage of 25 V at 25 ° C. for 60 seconds in the same manner as in the case of the electrodeposition liquid (Y-41). The original plate 1 was pulled up from a stainless steel beaker, washed with ion-exchanged water, dried, and heat-treated at 90 ° C. for 10 minutes.

Then, the mask is moved to the position shown in FIG.
After exposure at 0 mJ / cm ² , development was performed with an aqueous tetramethylammonium hydroxide solution having a concentration of 3.0% by weight. After washing with water and drying, the electrodeposition coating composition (Y-31) was used to carry out electrodeposition, washing with water, drying and heat treatment in the same manner as in the case of the electrodeposition liquids (Y-11) and (Y-21). Next, 200m on the whole surface of original plate 1
After irradiating with UV of J / cm ² , it was developed with a 1.5 wt% sodium hydroxide aqueous solution containing 5 wt% of a surfactant (manufactured by Kao Corporation, trade name “Perex NBL”),
The residual photoresist other than the colored coating film portion was removed.

Finally, in order to complete the curing, 180
Heated at ℃ for 30 minutes, excellent transparency, uniformity, flatness,
A color filter having a highly accurate black light-shielding pattern without any defects such as pinholes was obtained.

[0043]

Comparative Example 2 Production of Color Filter Corning 7059 glass (trade name, similar to Example 2)
A positive photoresist (manufactured by Tokyo Ohka Kogyo Co., Ltd., product name "OFPR") is manufactured on Corning Co., Ltd.
-800 ") was applied by spin coating so that the film thickness after drying would be 3 μm. Then, ultrahigh pressure mercury lamp light was irradiated at 70 mJ / cm ² through a mask (FIG. 1) having a predetermined light shielding pattern 2. Next, when the film was developed with a tetramethylammonium hydroxide aqueous solution having a concentration of 2.4% by weight, the positive photoresist in the exposed portion was selectively removed, and the ITO film surface was exposed. After washing with water and drying, the original plate 2 was used as an anode, and a stainless steel beaker containing an electrodeposition solution (Y-42) kept at 25 ° C was used as a cathode, and DC voltage 25V was applied at 25 ° C for 60 seconds for electrodeposition. Master 2
Was removed from the beaker made of stainless steel, washed with ion-exchanged water, dried (70 ° C., 5 minutes), and heat-treated at 90 ° C. for 10 minutes.

Then, exposure was carried out at 70 mJ / cm ² using a mask having a pattern shown in FIG. 2 and development was carried out with an aqueous solution of tetramethylammonium hydroxide having a concentration of 3.0% by weight. It was Master 2
As a result of observing with a microscope, a lot of defects such as pinhole-like defects and portions where the black colored layer was eluted and became transparent were observed. Therefore, as in Example 2, the subsequent steps could not be performed.

Separately from this, the colored layer obtained by electrodeposition of the electrodeposition liquid (Y-42) after pattern exposure / development was developed with a tetramethylammonium hydroxide aqueous solution having a concentration of 3.0% by weight. When the heat treatment condition having resistance was examined, it was 110 ° C. and 10 minutes.

[Brief description of drawings]

FIG. 1 is an enlarged schematic view showing a photomask for producing a light shielding layer.

FIG. 2 is an enlarged schematic view showing a photomask for producing a colored layer.

FIG. 3 is an enlarged schematic view showing a state where the photomask of FIG. 2 has been laterally moved once.

FIG. 4 is an enlarged schematic view showing a state in which the photomask of FIG. 2 is laterally moved twice.

[Explanation of symbols]

 1: Part with 100% light transmittance 2: Part with 0% light transmittance (shading pattern) 3: First exposure area (100% light transmittance) 3A: Area exposed for the first time 4: Light transmission 0% area 5: Second exposure area (light transmittance 100%) 5A: Second exposure area 6: Third exposure area (light transmittance 100%)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Otsuki 332-4 Nobamachi, Konan-ku, Yokohama-shi, Kanagawa No. 403, Kaminagaya Flower Mansion (72) Inventor Hiroyoshi Omiga 3-Shinohara Higashi, Kohoku-ku, Yokohama-shi, Kanagawa 20-17-3 (72) Inventor Masayuki Ando 7-1, Fujiwara, Funabashi City, Chiba Corp. 7-201 Magomezawa

Claims (1)

[Claims] 1. An electrodeposition for a color filter comprising (1) a resin having a hydroxyl group and an anionic group, (2) a curing agent, (3) a curing accelerator and (4) a base as essential components. Coating composition.