Patent ID: 8187789
Filing Date: 2012-05-29
Classification: G03F

Abstract:
1. A positive resist composition, comprising a resin component (A) which exhibits increased solubility in an alkali developing solution under action of an acid, and an acid generator component (B) which generates an acid upon exposure, wherein the resin component (A) comprises a structural unit (a1) derived from a hydroxystyrene and a structural unit (a2) containing an acid dissociable, dissolution inhibiting group, and the acid generator component (B) comprises an acid generator (B1) comprising a compound represented by the general formula (b1) shown below: wherein Q 1 represents an amide linkage (—C(═O)—NH—), a carbonyl group (—C(═O)—), a carbonate linkage (—O—C(═O)—O—), a combination of any of the aforementioned non-hydrocarbon-based, oxygen atom-containing linking groups with an alkylene group, a group of —R 91 —O— or a group of —C(═O)—O—R 93 —O—C(═O)— (wherein, R 91 and R 93 each independently represents an alkylene group); Y 1 represents an alkylene group of 1 to 4 carbon atoms which may contain a substituent or a fluorinated alkylene group of 1 to 4 carbon atoms which may contain a substituent; X represents a cyclic hydrocarbon group of 3 to 30 carbon atoms which may contain a substituent; and A + represents an organic cation).