Patent ID: 8062826

Claim:
A positive resist composition comprising: (A) a resin capable of increasing the solubility in an alkali developing solution by the action of an acid, comprising: (a1) a repeating unit selected from repeating units represented by following formulae (a1-1) to (a1-3); (a2) a repeating unit represented by a following formula (a2); and (a3) a repeating unit selected from repeating units represented by following formulae (a3-1) to (a3-4); (B) a compound capable of generating an acid upon irradiation with actinic ray or radiation, (C) a resin comprising: at least one of a fluorine atom and a silicon atom; and a group selected from following groups (x) to (z): (x) an alkali-soluble group, (y) a group capable of decomposing by the action of an alkali developing solution to increase the solubility in the alkali developing solution, and (z) a group capable of decomposing by the action of an acid; and (D) a solvent: wherein R represents a hydrogen atom, a halogen atom, or an alkyl group; R′ represents an acid-decomposable group; each of R 12 and R 13 independently represents a hydrogen atom, a methyl group, an ethyl group, or a propyl group; R 14 represents an alicyclic group; and n represents an integer of from 0 to 5.