Patent ID: 8206891

Claim:
A positive resist composition comprising: a base 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 base component (A) comprises a polymeric compound (A1) which contains a structural unit (a0) represented by the general formula (a0-1) shown below and a structural unit (a1) derived from an acrylate ester containing an acid dissociable, dissolution inhibiting group, and the acid generator component (B) comprises an acid generator (B1) containing an anion moiety represented by the general formula (I) shown below: (in the formula (a0-1), R 1 represents a hydrogen atom, a lower alkyl group of 1 to 5 carbon atoms, or a halogenated lower alkyl group of 1 to 5 carbon atoms; R 2 represents a bivalent linking group; and R 3 represents a cyclic group containing —SO 2 — within the ring skeleton), and [Chemical Formula 2] X-Q 1 -Y 1 —SO − 3 (I) (in the formula (I), X represents a cyclic group of 3 to 30 carbon atoms which may contain a substituent; Q 1 represents a bivalent linking group which contains an oxygen atom; 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).