Patent ID: 6180316
Filing Date: 2001-01-30
Classification: G03F,Y10S

Abstract:
A radiation-sensitive resin composition which comprises,(A) a polymer containing,(a) a recurring unit (I) of the following formula (1): ##STR50##wherein A and B individually represent a hydrogen atom or an acid-decomposable organic group having 20 or less carbon atoms which dissociates in the presence of an acid and produces an acidic functional group, provided that either one of A and B is the acid-decomposable organic group, X and Y individually represent a hydrogen atom or an alkyl group having 1-4 carbon atoms, and n is 0 or 1, or a recurring unit (I) of the above formula (1) and a recurring unit (II) of the following formula (2), ##STR51##and(b) a recurring unit (III) which is derived from a monomer having at least two polymerizable carbon--carbon double bonds by cleavage of the carbon--carbon double bonds, wherein the monomer has, in addition to said at least two polymerizable carbon--carbon double bonds, at least one acid-decomposable divalent group of the following formula (3) or (4), ##STR52##wherein R.sup.1 and R.sup.2 are individually an alkyl group having 1-5 carbon atoms, ##STR53##wherein R.sup.3 and R.sup.4 are individually an alkyl group having 1-5 carbon atoms,said at least two polymerizable carbon--carbon double bonds being linked via the least one acid-decomposable divalent group of the formula (3) or (4), and(B) a photoacid generator.