Patent ID: 6800419
Filing Date: 2004-10-05
Classification: G03F,Y10S

Abstract:
A radiation-sensitive resin composition comprising:(A) an alkali insoluble or scarcely alkali-soluble resin having an acid-dissociable protecting group of the following formula [I], wherein R1 groups individually represent a monovalent alicyclic hydrocarbon group having 4-20 carbon atoms or a derivative thereof, or a linear or branched alkyl group having 1-4 carbon atoms, provided that at least one of the R1 groups is the monovalent alicyclic hydrocarbon group having 4-20 carbon atoms or a derivative thereof, or any two of the R1 groups form, in combination and together with the carbon atom to which the two R1 groups bond, a divalent alicyclic hydrocarbon group having 4-20 carbon atoms or a derivative thereof, with the remaining R1 group being the linear or branched alkyl group having 1-4 carbon atoms or the monovalent alicyclic hydrocarbon group having 4-20 carbon atoms or the derivative thereof,(B) a photoacid generator, and (C) propylene glycol monomethyl ether acetate, &ggr;-butyrolactone, and cyclohexanone as solvents.