Patent ID: 7488566

Claim:
A positive type radiation-sensitive resin composition comprising (A) a photoacid generator and (B) an acid-labile group-containing resin which is insoluble or scarcely soluble in alkali, but becomes alkali-soluble by the action of an acid, wherein (A) the photoacid generator comprises a mixed photoacid generator containing (A1) a photoacid generator of the following formula (1) and (A2) a photoacid generator which is at least one compound selected from the group consisting of sulfonyloxyimides and disulfonyldiazomethanes, wherein R 1 represents a same or different monovalent organic group containing fluorine atoms, or a fluorine atom, R 2 represents a same or different monovalent organic group containing no fluorine atoms, or a hydrogen atom, n and m are integers of 1-5, and X − represents an anion of camphorsulfonic acid or nonafluorobutanesulfonic acid.