Patent ID: 6322949
Filing Date: 2001-11-27
Classification: G03F,Y10S

Abstract:
A negative-tone radiation sensitive resin composition comprising:(A) a photoacid generator represented by the following formula (1-1): ##STR23##wherein R.sup.1 and R.sup.2 may be either the same or different and each individually represents an alkyl group containing 1-4 carbon so atoms, R.sup.3 represents a hydroxyl group or --OR.sup.4 (wherein R.sup.4 is an organic group having 1-6 carbon atoms), A.sub.1.sup.- indicates a monovalent anion, a denotes an integer of 4-7, and b is an integer of 0-7; orformula (1-2): ##STR24##wherein R.sup.5 and R.sup.6 may be either the same or different and each individually represents an alkyl group containing 1-4 carbon atoms, R.sup.7 represents a hydroxyl group or --OR.sup.8 (wherein R.sup.8 is an organic group having 1-6 carbon atoms), A.sub.2.sup.- indicates a monovalent anion, c denotes an integer of 4-7, and d is an integer of 0-4;(C) an alkali-soluble resin;(D) a compound capable of crosslinking the alkali-soluble resin in the presence of an acid.