Patent ID: 6316162
Filing Date: 2001-11-13
Classification: C08F,G03F,Y10S

Abstract:
A method of forming a photoresist pattern, comprising the steps of:a) preparing a photoresist composition comprising:(i) a photoresist polymer of Formula 1: ##STR16##wherein, R is a C.sub.1 -C.sub.10 primary or secondary alcohol group; m and n independently represent a number from 1 to 3; and a, b and c are the respective polymerization ratios of the co-monomers; wherein each of a:b:c: is greater than 0 AND represent polymerization ratios of the co-monomers.(ii) a photoacid generator, and,(iii) an organic solvent.b) coating the photoresist composition on a substrate having an etching layer coated on the surface thereof;c) exposing the photoresist layer to a light source using an exposer to form a pattern of exposed regions in the photoresist layer wherein the photoresist polymer contains free carboxylic acid groups;d) spraying a silylation agent on the pattern in photoresist layer;e) dry etching the resultant pattern to form a pattern in the substrate.