Patent ID: 7858288

Claim:
A positive resist composition for immersion exposure comprising a base component (A) which exhibits increased solubility in an alkali developing solution under action of acid and does not contain a structural unit (c1) represented by a general formula (c1-1) shown below, an acid-generator component (B) which generates acid upon irradiation, and a fluorine-containing polymeric compound (C) obtained by polymerizing only polymerizable monomers represented by a general formula (c1-0) shown below: wherein R 1 represents a hydrogen atom or a methyl group; R 2 represents an aliphatic hydrocarbon group substituted with fluorine atoms, or a group in which a plurality of aliphatic hydrocarbon groups which may be substituted with fluorine atoms are bonded through a linking group containing a hetero atom, with the proviso that at least one of the plurality of aliphatic hydrocarbon groups which may be substituted with fluorine atoms is an aliphatic hydrocarbon group substituted with fluorine atoms; and wherein R 1 represents a hydrogen atom or a methyl group; R 2 represents an aliphatic hydrocarbon group substituted with fluorine atoms, or a group in which a plurality of aliphatic hydrocarbon groups which may be substituted with fluorine atoms are bonded through a linking group containing a hetero atom, with the proviso that at least one of the plurality of aliphatic hydrocarbon groups which may be substituted with fluorine atoms is an aliphatic hydrocarbon group substituted with fluorine atoms.