Patent ID: 7749664
Filing Date: 2010-07-06
Classification: G03F

Abstract:
1. Method of producing a color filter comprising the steps of: coating a resist composition on a substrate; drying; exposing; and developing, wherein the resist composition comprises a resin selected from the group consisting of polyvinyl phenol or a copolymer thereof, at least one of a photoacid generator or a photobase generator, a crosslinking compound and a dye mixture containing a dye having a structure of amino sulfonate ester or ammonium sulfonate salt in a proportion of 40 to 95% by weight of total dye content, and the dye mixture is contained in the resist composition in an amount of 55 to 95% by weight based on total solid content of the resist composition, the resist composition has an optical quality having at least a region with a transmittance of 70% or more and a region with a transmittance of 10% or less in wavelength range between 400 nm and 700 nm, and in which a variation in transmittance is 5% or less even when the composition is subjected to a temperature of 200° C. or more, and the dye having a structure of amino sulfonate ester or ammonium sulfonate salt is a dye selected from the group consisting of: wherein R is an alkyl or aromatic group and R′ is a hydrogen atom or an alkyl group.