Patent ID: 7157208

Claim:
A positive resist composition comprising: (A) a resin containing a repeating unit represented by formula (I), which is insoluble or hardly soluble in an alkali developer and becomes soluble in an alkali developer under the action of an acid; (B) a compound capable of generating an acid upon irradiation with actinic rays or radiation; and (C) an organic basic compound: wherein R 1 represents a hydrogen atom, a methyl group, a cyano group, a halogen atom or a perfluoro group, R 2 represents a non-acid-decomposable group containing an oxygen atom, X represents a hydrogen atom or an organic group, m represents an integer of 1 to 4, n represents an integer of 1 to 4, provided that 2≦n+m≦5, when m is an integer of 2 to 4, multiple Xs may be the same or different, and when n is an integer of 2 to 4, multiple R 2 s may be the same or different.