Patent ID: 7977027
Filing Date: 2011-07-12
Classification: G03F

Abstract:
1. A chemically amplified positive resist composition comprising (A) a compound having an amine oxide structure as a basic component, (B) an organic solvent, (C) a base resin having an acid labile group-protected acidic functional group which is alkali-insoluble or substantially alkali-insoluble, but becomes alkali-soluble when the acid labile group is eliminated, and (D) a photoacid generator, wherein the compound having an amine oxide structure is selected from the group consisting of compounds represented by the general formula (2), (3) or (4): wherein R 4 is selected from the group consisting of hydrogen, straight, branched or cyclic C 1 -C 20 alkyl, C 6 -C 20 aryl, C 7 -C 20 aralkyl, C 2 -C 10 alkoxyalkyl, C 1 -C 10 hydroxyalkyl, and C 2 -C 10 acyloxyalkyl groups, wherein R 5 is hydrogen, straight, branched or cyclic C 1 -C 20 alkyl, C 6 -C 20 aryl, or C 7 -C 20 aralkyl group, as a basic compound.