Patent ID: 8895222

Claim:
An actinic ray-sensitive or radiation-sensitive resin composition comprising: (P) a resin which contains (A) a repeating unit having an ionic structure moiety capable of producing an acid upon irradiation with an actinic ray or radiation, wherein a cation moiety of the ionic structure moiety has an acid-decomposable group or an alkali-decomposable group, provided that an anionic moiety of the ionic structure moiety is bonded to a main chain of the resin (P) via covalent bond, and the cationic moiety is free as a counter cation; wherein the repeating unit (A) is a repeating unit represented by any one of the following formulas (III) to (V): wherein in formulas (III) to (V), each of R 04 , R 05 and R 07 to R 09 independently represents a hydrogen atom, a substituted or unsubstituted alkyl group, a cycloalkyl group, a halogen atom, a cyano group or an alkoxycarbonyl group; R 06 represents a cyano group, a carboxyl group, —CO—OR 25 or —CO—N(R 26 )(R 27 ), provided that R 26 and R 27 may combine to form a ring together with the nitrogen atom; each of X 1 to X 3 comprises an arylene group; R 25 represents an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group or an aralkyl group; each of R 26 , R 27 and R 33 independently represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group or an aralkyl group, and A represents the ionic structure moiety which produces an acid upon irradiation with an actinic ray or radiation and in which the counter cation is a cation having an acid-decomposable group or an alkali-decomposable group, and the repeating unit (A) contains a repeating unit represented by formula (III), and an acid generated from the repeating unit represented by formula (III) has an acid anion represented by the following formula: wherein R 01 represents a hydrogen atom, a methyl group, a chloromethyl group, a trifluoromethyl group or a cyano group; Ar 1 a represents an arylene group which may have a substituent; and R 02 represents an arylene group, an alkylene group, a cycloalkylene group, —O—, —SO 2 —, —CO—, —N(R 33 )— or a divalent linking group formed by combining a plurality of these groups, R 33 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group or an aralkyl group.