Patent ID: 7258962

Claim:
A positive-tone radiation-sensitive resin composition comprising: (A) a carbazole derivative shown by the following formula (1), wherein R 1 and R 2 individually represent a halogen atom, a methyl group, a cyano group, or a nitro group, X represents a linear or branched divalent organic group having 1-20 carbon atoms, and h and i are integers of 0-4, two or more R 1 groups and R 2 groups, if present, being either the same or different, (B) a photoacid generator comprising a sulfonimide compound and an iodonium salt compound, wherein the iodonium compound has a fluorine substituent as a cationic moiety, and (C) an acid-dissociable group-containing resin which is insoluble or scarcely soluble in alkali, but becomes soluble in alkali when the acid-dissociable group dissociates, wherein the resin comprises a recurring unit of the following formula (9), wherein R 10 represents a hydrogen atom or a methyl group, R 11 represents a monovalent organic group (excluding the group same as —OR 14 in the following formula (10)), m is an integer of 0-3, and n is an integer of 1-3, provided that two or more R 11 groups, if present, may be either the same or different, and a recurring unit of the following formula (10), wherein R 12 represents a hydrogen atom or a methyl group, R 13 represents a monovalent organic group (excluding the group same as —OR 14 ), R 14 represents a monovalent acid-dissociable group, p is an integer of 0-3, and q is an integer of 1-3, provided that two or more R 13 groups and two or more R 14 groups, if present, may be either the same or different.