Patent ID: 6811947
Filing Date: 2004-11-02
Classification: G03F,Y10S

Abstract:
A positive resist composition comprising (A) a resin, which is decomposed by the action of an acid to increase solubility in an alkali developing solution, having a repeating unit represented by formula (Y) shown below, (B) a compound capable of generating an acid upon irradiation of an actinic ray or radiation, and (C) a solvent: wherein, R1 to R6, which may be the same or different, each represent a hydrogen atom, a fluorine atom, an alkyl group or a substituted alkyl group in which at least one hydrogen atom is substituted with a fluorine atom, provided that at least one of R1 to R6 is a fluorine atom; L represents a hydrogen atom or a group decomposable upon the action of an acid; n represents 1 or 2, when n is 2, two R1's to R6's and L's may be the same or different from each other; A represents a hydrogen atom, a fluorine atom, a chlorine atom, a methyl group, a cyano group or a trifluoromethyl group; and the structural formula (YA) shown below represents a benzene ring structure hydrogenated at least partially.