Patent ID: 7615330

Claim:
A positive resist composition comprising: a compound including a sulfonium cation having a structure represented by the following formula (Z-I); a low molecular weight compound which increases solubility in an alkali developing solution by an action of an acid; and a compound which generates a compound having a structure represented by the following formula (A-I) upon irradiation of an actinic ray or a radiation: wherein Y 1 to Y 13 each independently represents a hydrogen atom or a substituent, or adjacent members of Y 1 to Y 13 may be combined with each other to form a ring, and Z represents a single bond or a divalent connecting group; Q-A−(X) n —B—R (A-I) wherein Q represents a sulfo group or a carboxyl group, A represents a divalent connecting group, X represents —SO 2 — or —CO—, n represents 0 or 1, B represents a single bond, an oxygen atom or —N(R x )— in which R x represents a hydrogen atom or a monovalent organic group, R represents a monovalent organic group including a proton acceptor functional group or a monovalent organic group including an ammonium group, and when B represents —N(R x )—, R and R x may be combined with each other to form a ring.