Nippon Oil Company

Dai Nippon Printing Co., Ltd.

Nippon Paint Compnay, Ltd.

Hiroyoshi Omika

Yutaka Otsuki

Yoshihiko Araki

Hajime Hara

Kazuho Aoyama

Hitoshi Yuasa

Norikatsu Ono

Toru Nakamura

Masayuki Ando

Yasuyuki Tsuchiya

Akio Oshima

Haruyoshi Sato

Tadafumi Shindo

Eiji Yoda

Teruhisa Kuroki

A color liquid crystal display device contains a color filter substrate, a counterelectrode substrate disposed to oppose the color filter substrate via a sealing material disposed in contact with peripheral portions of the color filter substrate and the counterelectrode substrate, and a liquid crystal layer sealed between the color filter substrate and the counterelectrode substrate and surrounded by the sealing material. The color filter substrate contains a transparent substrate, a black matrix and a plurality of colored layers of plural colors, the black matrix and the colored layers being formed in a predetermined pattern in a first region on the transparent substrate, and a resin layer having substantially same thickness as that of the black matrix and formed in a second peripheral region on the transparent substrate positioned peripherally adjacent to the first region. The sealing material is in contact with the resin layer and a black matrix portion in periphery of the first region. A method for producing the color filter substrate involves the steps for forming the resin layer having substantially the same thickness as that of the black matrix.

Color liquid crystal display device and method for producing color

A method for preparing a substrate having a light-shielding layer involves forming a photosensitive coating film on a transparent electrically conductive layer formed on a transparent substrate, exposing the photosensitive coating film via a mask exhibiting light transmitting properties, removing and developing the coating film for exposing the transparent electrically conductive layer and electrodepositing a dark-hued coating on the exposed transparent electrically conductive layer for forming the light-shielding layer, and heating the light-shielding layer. The substrate having the light-shielding layer has a volume resistivity of 1.times.10.sup.2 ohm.cm or higher and may be used for a counterelectrode substrate for a TFT array substrate incorporated in a liquid crystal display device.

Substrate having light shielding layer

A method for producing a color filter involves (a) forming a positive photosensitive coating film on a transparent electrically conductive layer of a transparent substrate; (b) forming a light-irradiated region where a light irradiation amount is different in two steps; (c) developing a larger light-irradiated portion to lay-open the transparent electrically conductive layer followed by electrodepositing a light shielding layer thereon; (d) forming on the positive photosensitive coating film undeveloped in the step (c) a light-irradiated region where a light irradiation amount is different in two steps; (e) developing a larger light-irradiated portion of the photosensitive coating film to lay-open the transparent electrically conductive layer followed by electrodepositing a colored coating thereon; (f) forming on the positive photosensitive coating film undeveloped in the step (e) a light-irradiated region where a light irradiation amount is different in at least three steps; and (g) developing the photosensitive coating film to lay-open the transparent electrically conductive layer followed by electrodepositing a colored coating thereon, operation of the developing and electrodepositing being sequentially repeated at least twice in decreasing light irradiation amounts.

Method for producing color filter

A method for preparing a substrate having a light-shielding layer involves forming a photosensitive coating film on a transparent electrically conductive layer formed on a transparent substrate, exposing the photosensitive coating film via a mask exhibiting light transmitting properties, removing and developing the coating film for exposing the transparent electrically conductive layer and electrodepositing a dark-hued coating on the exposed transparent electrically conductive layer for forming the light-shielding layer, and heating the light-shielding layer. The substrate having the light-shielding layer has a volume resistivity of 1.times.10.sup.2 ohm.multidot.cm or higher and may be used for a counterelectrode substrate for a TFT array substrate incorporated in a liquid crystal display device.

Method for forming a substrate having a light shielding layer

A method for producing a color filter involves (a) forming a positive photosensitive coating film on a transparent electrically conductive layer of a transparent substrate; (b) forming on the photosensitive coating film a first region where a light irradiation amount is different in two steps; (c) developing a light-irradiated portion of the first region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (d) forming on the remaining photosensitive coating film a second region where a light irradiation amount is different in two steps; (e) developing a light-irradiated portion of the second region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer; (f) removing the remaining photosensitive coating film not developed in the steps (c) and (e); (g) forming a positive or negative photosensitive coating film on the transparent substrate; (h) forming on the photosensitive coating film formed in the step (g) a third region where a light irradiation amount is different in at least three steps; and (i) developing the third region to lay-open the transparent conductive layer followed by electrodepositing a colored coating thereon to form a colored layer, the operation of the developing and electrodepositing being sequentially repeated in the order of decreasing or increasing light irradiation amounts to thereby form different colored layers.

A cathode-depositing electrodeposition coating composition having excellent low-temperature curability comprising as essential ingredients (A) 100 parts by weight of a reaction product of (1) a high molecular compound having a molecular weight of 500 to 5,000 and containing carbon-carbon double bonds with an iodine number of 50 to 500 and 3 to 12% by weight of oxirane oxygen, and (2) 30 to 300 millimoles, per 100 g of the high molecular compound (1), of a specified amine compound, (B) 10 to 200 parts by weight of a reaction product of a specified diglycidyl compound with 1.9 to 2.1 moles, per molecule of the diglycidyl compound, of an alpha, beta-unsaturated carboxylic acid or an unsaturated fatty acid having a molecular weight of 100 to 350 and containing at least 10% by weight of a carbon-carbon double bond, or a mixture of both, (C) 0.5 to 10 parts by weight of a reaction product of a high molecular compound having a molecular weight of 500 to 5,000 and containing a carbon-carbon double bond with an iodine number of 50 to 500 and 40 to 400 millimoles, per 100 g of the high molecular compound, of a specified alpha, beta-unsaturated dicarboxylic acid and (D) 0.005 to 1.0 part by weight, as metal, of a water-soluble salt of an organic acid with a metal selected from manganese, cobalt, and copper.

Cathode-depositing electrodeposition coating composition

A cathode-depositing electrodeposition coating composition comprising an aqueous solution or dispersion containing

A cathode-precipitating electrodeposition coating composition consisting essentially of (A) 100 parts of a high-molecular-weight compound having a molecular weight of 500 to 10,000 and containing an amino group and a carbon-carbon double bond, (B) 3 to 200 parts by weight of a reaction product obtained by reacting an unsaturated carboxylic acid having 3 or 4 carbon atoms with the terminal glycidyl group of a glycidyl compound obtained by reacting a bisphenol with epichlorohydrin, and (C) 0.2 to 20 parts by weight of an oil-soluble manganese salt of a monoester of a 1,2-dicarboxylic acid or a manganese salt of sulfonated or maleinized polybutadiene having a molecular weight of 300 to 3,000.

Cathode-precipitating electrodeposition coating composition

A cathode-precipitating electrodeposition coating having excellent low-temperature curability, said composition consisting essentially of

A self-curable coating composition for cathode-precipitating electrodeposition is disclosed which essentially comprises a water-dispersible resin having a carbon-carbon double bond and a tertiary amino group and an epoxy resin having a teritary amino group and an unsaturated group of the formula ##STR1## The two resins are neutralized by an acid to render the composition water-soluble or water-dispersible.

Self-curable coating composition for cathode-precipitating

A process for preparing a cathodic electrodepositable coating composition which comprises, in sequence,

Process for preparing cathodic electrodepositable coating composition

A coating composition for cathode-precipitating electrodeposition consisting essentially of

A coating composition for cathode-precipitating electrodeposition consisting essentially of (A) 100 parts by weight of an unsaturated organic compound having a molecular weight of 300 to 5,000 containing a carbon-carbon double bond in an amount corresponding to an iodine value of 100 to 500, said unsaturated organic compound having bonded thereto, through a carbon-carbon bond, basic groups of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and X are as defined in claim 1, the amount of said basic groups in said component (A) being 0.05 to 0.5 mole per 100 g of said component (A), and (B) 3 to 100 parts by weight of at least one compound represented by the general formula ##STR2## wherein R.sub.5, R.sub.6, n, m, Y and Y' are as defined in claim 1, said component (A) and said component (B) being neutralized with an organic acid or an inorganic acid and dissolved or dispersed in water.

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Yokohama, Japan

Hiroyoshi Omika