Patent ID: 7351515

Claim:
A positive resist composition comprising: (A) a resin capable of increasing a solubility thereof in an alkali developer by an action of an acid, the resin containing a repeating unit having a group having a lactone structure; (B) a compound capable of generating a sulfonic acid represented by the following formula (I) upon irradiation with one of an actinic ray and a radiation; and (C1) at least one of an amine compound having at least an aliphatic hydroxyl group in a molecule and an amine compound having at least an ether bond in a molecule: A 1 A 2 -SO 3 H) n (I) wherein A 1 represents an n-valent linking group, A 2 represents a divalent aliphatic group, and A 2 's each may be the same or different, provided that at least one group represented by A 1 or A 2 contains a fluorine atom, and n represents an integer of from 2 to 4.