Patent ID: 7435530
Filing Date: 2008-10-14
Classification: G03F,Y10S

Abstract:
1. A positive type resist composition comprising (A) a resin component comprising within the principal chain a structural unit derived from a (meth)acrylate ester and incorporating an acid dissociable, dissolution inhibiting group containing a polycyclic group on an ester side chain section, for which solubility in alkali increases under action of acid, (B) an acid generator component which generates acid on exposure, and (C) an organic solvent (C), wherein said component (A) comprises both a structural unit derived from a methacrylate ester and a structural unit derived from an acrylate ester provided that said component (A) comprises either one, or both of: (wherein, R represents a hydrogen atom or a methyl group, and R (wherein, R represents a hydrogen atom or a methyl group, and R