Patent ID: 7771912

Claim:
A positive resist composition comprising: (A) a resin of which solubility in an alkali developer increases under the action of an acid, (B) a compound capable of generating an acid upon irradiation with actinic rays or radiation, (C) a resin having at least one repeating unit selected from fluorine atom-containing repeating units represented by the following formulae (2-1), (1-2) and (1-3), the resin being stable to an acid and insoluble in an alkali developer, and the resin being added in an amount of from 0.1 to 5.0 mass % based on the entire solid content concentration, and (D) a solvent: wherein R 1 represents a hydrogen atom or an alkyl group; R 3 represents a hydrogen atom or a monovalent organic group; R 4 to R 7 each independently represents a hydrogen atom, a fluorine atom, an alkyl group, a fluoroalkyl group, an alkoxy group or a fluoroalkoxy group, provided that at least one of R 4 to R 7 represents a fluorine atom, and R 4 and R 5 , or R 6 and R 7 may combine to form a ring; R 8 represents a hydrogen atom, a fluorine atom or a monovalent organic group; Rf represents a fluorine atom or a fluorine atom-containing monovalent organic group; L represents a single bond or a divalent linking group; Q represents an alicyclic structure; and k represents an integer of 0 to 3; and wherein when the resin (C) has a repeating unit of the formula (2-1), the resin further comprises the following repeating unit: