Nippon Oil Company

Yukio Yamasita

Yutaka Otsuki

Toru Nakamura

Hitoshi Yuasa

Haruyoshi Sato

Eiji Yoda

A method for producing a color filter comprising exposing a portion of the color filter corresponding to colored portions through a different pattern mask by colors and in an irradiation dose varying for each mask to effect patterning and successively coloring the pattern portions smaller or larger in the order of light irradiation dose by way of development and electrodeposition.

Method for producing color filter

A positive type photoresist composition contains (a) 100 parts by weight of a resin which is a polymer compound (A) including carbon-carbon double bonds and having a molecular weight of 300 to 30,000 and an iodine value of to 500. To at least a part of the double bonds of the polymer compound (A), a group represented by the formula (I) is introduced ##STR1## wherein R.sup.1 denotes a hydrogen atom, a halogen atom or an alkyl group having 1 to 3 carbon atoms and R.sup.2 denotes an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group or an aryl group, The composition further contains (b) 25 to 100 parts by weight of a compound containing a quinone diazide unit.

Positive type photoresist composition comprising a polymer having

A method for producing a color filter involves the steps of: (A) forming a photosensitive coating film on an electrically conductive layer formed on a surface of a substrate, and exposing the photosensitive coating film through a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film portion registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the electrically conductive layer, and electrodepositing a colored coating on the exposed electrically conductive layer for forming a colored layer thereon; (C) repeating the step (B) for the respective patterns of different degrees of light transmittances in sequence of difference in transmittances for producing different colored layers, respectively; and (D) transcribing the colored layers onto another substrate.

A method for producing a color filter involves (A) forming a photosensitive coating film on a transparent electrically conductive layer provided on an outermost surface of a substrate having an alignment film, and exposing the photosensitive coating film to light in a first irradiation amount through a mask having a predetermined pattern of a certain light transmittance and at least once displacing the mask to another position on the photosensitive coating film and exposing the photosensitive coating film to light in a second irradiation amount different from the first irradiation amount through the mask; (B) developing and removing a photosensitive coating film portion exposed to light in one of smallest and largest irradiation amounts for exposing the transparent electrically conductive layer and electrodepositing a colored coating on the exposed electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film and electrodepositing the colored coating being repeated in sequence of difference in irradiation amounts to form different colored layers, respectively; and (A) transcribing the colored layers, the transparent electrically conductive layer and the alignment film onto another substrate.

A method for producing a color filter involves (A) forming a photosensitive coating film on a transparent electrically conductive layer formed on a surface of a transparent substrate and exposing the photosensitive coating film through a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film region registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the transparent electrically conductive layer and electrodepositing a colored coating on the exposed transparent electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film and electrodepositing the colored coating being repeated for the respective patterns of different degrees of light transmittances in sequence of difference in light transmittances to form different colored layers, respectively; and (C) selectively forming a metal layer on at least one exposed region of the transparent electrically conductive layer.

A method for producing a color filter involves (A) forming a photosensitive coating film on an electrically conductive layer formed on a surface of a substrate, and exposing the photosensitive coating film trough a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film portion registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the electrically conductive layer and electrodepositing a colord coating on the exposed electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film followed by electrodeposition being repeated for the respective patterns of different degrees of light transmittances in sequence of difference in transmittances for producing different colored layers, respectively; (C) selectively forming a metal layer in interstices present between the colored layers, and (D) transcribing the colored layers and the metal layer onto another substrate.

A cationic electrodeposition negative type resist composition contains (A) 100 parts by weight of a resin obtained by reacting an unsaturated group-containing isocyanate compound with epoxidized liquid polybutadiene to which at least a secondary amine has been added, and (B) 0.3 to 20 parts by weight of a sensitizer.

Cationic electrodeposition negative type resist composition

A method for producing a color filter involves (A) forming a photosensitive coating film on a transparent electrically conductive layer provided on an outermost surface of a substrate having an alignment film, and exposing the photosensitive coating film to light through a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film portion registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the transparent electrically conductive layer and electrodepositing a colored coating on the exposed electrically conductive layer for forming a colored layer thereon, operation of developing and removing the photosensitive coating film and electrodepositing the colored coating being repeated for the respective patterns of different degrees of light transmittances in sequence of difference in light transmittances to form different colored layers, respectively; and (Z) transcribing the colored layers, the transparent electrically conductive layer and the alignment film onto another substrate.

A method for producing a color filter involves the steps of: (A) forming a photosensitive coating film on a transparent electrically conductive layer formed on a surface of a transparent substrate, and exposing the photosensitive coating film through a mask having patterns of at least three different degrees of light transmittances; (B) developing and removing a photosensitive coating film portion registering with one of the patterns of smallest and largest degrees of light transmittances for exposing the transparent electrically conductive layer, and electrodepositing a colored coating on the exposed transparent electrically conductive layer for forming a colored layer thereon; and (C) repeating the step (B) for the respective patterns of different degrees of light transmittances in sequence of difference in transmittances for producing different colored layers, respectively.

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Yokohama, Japan

Yukio Yamasita