Patent ID: 8092976

Claim:
A resist composition comprising: a polymer having a group capable of decomposing under an action of an acid and having a weight average molecular weight of from 1,500 to 4,000, of which solubility in an alkali developer increases under an action of an acid; and a compound capable of generating a compound having a structure represented by the following formula (A-II) upon irradiation with actinic rays or radiation: Q 1 -X 1 —NH—X 2 -A-(X 3 ) n —B-Q 3 (A-II) wherein Q 1 and Q 3 each independently represents a monovalent organic group, provided that either one of Q 1 and Q 3 has a proton acceptor functional group, Q 1 and Q 3 may be combined with each other to form a ring and the ring formed may have a proton acceptor functional group; X 1 , X 2 and X 3 each independently represents —CO— or —SO 2 —; A represents a divalent linking group; B represents a single bond, an oxygen atom or —N(Q x )-; Q x represents a hydrogen atom or a monovalent organic group; when B is —N(Q x )-, Q3 and Q X may be combined with each other to form a ring; and n represents 0 or 1; wherein the polymer having a group capable of decomposing under an action of an acid comprises a repeating unit represented by the following formula (II) and a repeating unit represented by the following formula (III): wherein each R 01 independently represents a hydrogen atom, an alkyl group, a cycloalkyl group, a halogen atom, a cyano group or an alkoxycarbonyl group, L 1 and L 2 , which may be the same or different, each represents a hydrogen atom, an alkyl group, a cycloalkyl group or an aralkyl group, M represents a single bond or a divalent linking group, Q represents an alkyl group, a cycloalkyl group or an alicyclic or aromatic ring group which may contain a heteroatom, at least two members out of Q, M and L 1 may combine to form a 5- or 6-membered ring, A represents a cyano group, an acyl group, an alkoxy group, an acyloxy group or an alkoxycarbonyl group, and m and n each independently represents an integer of 0 to 4, provided that at least one of m and n is not 0.