Abstract: A positive-working photoresist composition which exhibits a high sensitivity and a high resolution in addition to excellent characteristics such as heat resistance, film retention ratio, coatability and profile;which comprises an alkali-soluble resin comprising a polyvinylphenol resin which is polyvinylphenol and/or its partially hydrogenated product in which the phenolic hydroxyl groups are partially alkyletherified and partially protected;and a sulfonate of a N-hydroxyimide compound as an acid generator.

Abstract: An azo dye for use in color filters soluble in alkaline aqueous solutions and organic solvents and having in one molecule at least one sulfonamido group of which one hydrogen atom is substituted; and a method for producing a color filter having a plurality of color filter elements which comprises the steps of a) coating a substrate with an organic solvent solution of a photoresist composition containing said azo dye and drying the coat to form an adhering layer, b) exposing a specific part of said layer to radiation ray, c) developing the exposed or unexposed region with alkali to form a colored pattern, and d) repeating the steps a)-c) on every dye of different color present in said composition.

Abstract: An azo dye for use in color filters soluble in alkaline aqueous solutions and organic solvents and having in one molecule at least one sulfonamido group of which one hydrogen atom is substituted; and a method for producing a color filter having a plurality of color filter elements which comprises the steps of a) coating a substrate with an organic solvent solution of a photoresist composition containing said azo dye and drying the coat to form an adhering layer, b) exposing a specific part of said layer to radiation ray, c) developing the exposed or unexposed region with alkali to form a colored pattern, and d) repeating the steps a)-c) on every dye of different color present in said composition.

Abstract: A curable resin composition used as an overcoat film of a color filter for a color liquid crystal display device contains polyglycidyl methacrylate and a curing agent comprising a carboxylic anhydride and a bisphenol S, a halogen- or (halo)alkyl-substituted derivative thereof, or a diaminophenol. The cured composition is used as an overcoat film with good heat resistance on a color filter of a liquid crystal display device.

Abstract: A color filter having the thickness of 3 .mu.m or smaller and, on a substrate, having color filter elements which have different colors each other and are made from a resist compositions comprising an alkali soluble resin and dyes having a specific color within the wave length range from 400 nm to 700 nm, wherein each of the color filter elements has the minimum light transmittance of 25% or smaller, and the color filter is excellent in various properties such as resolution, color tone, color reproductivity and color depth and it has a small thickness.

Abstract: A sequential-access memory of an auto-refreshing type has an increased storage capacity. The sequential-access memory has at least two dynamic-type memory cell arrays serially connected to one another to form a loop. Each array comprises N rows by M columns of memory cells each having a read selection line and a write selection line. The read selection line of each memory cell of each row is connected to the write selection line of the memory cell of the same row which comes next to the each memory cell to form an address selection line. The address selection lines of each memory cell array are activated one after another to effect a sequential access to the memory cell array. Data read form each memory cell array is fed through a delay circuit to the memory cell array which comes next to the each memory cell array. A logic circuit for subjecting data outputted from one memory array may be additionally provided to feed data representative of the result of the predetermined operation to the next memory array.