Patent ID: 6337171
Filing Date: 2002-01-08
Classification: G03F,Y10S

Abstract:
A radiation-sensitive resin composition comprising:(a) a resin which comprises: a recurring unit (1) shown by the following formula (1), either or both of a recurring unit (2) shown by the following formula (2) and a recurring unit (3) shown by the following formula (3): wherein R1 represents a hydrogen atom or a methyl group; wherein R2 represents a hydrogen atom or a methyl group and R3 represents a tertiary alkyl group having 4-10 carbon atoms or a 1,1-dimethyl-3-oxobutyl group; wherein R4 represents a hydrogen atom or a methyl group and R5 represents a t-butyl group or acetyl group, and wherein said resin comprises at least one recurring unit other than the recurring units (1), (2), and (3) containing a unit derived from polyfunctional monomers which has at least two polymerizable unsaturated groups in the molecule; and (B) a photoacid generator shown by the following formula (4): wherein (a) R6-R11 individually represent a hydrogen atom or a monovalent organic group having 1-6 carbon atoms, provided that at least one of R6-R11 represents a group other than a hydrogen atom, (b) two groups among R6-R8 form a 3-8 membered cyclic structure together with the carbon atoms of the benzene ring to which these groups are bonded, with the remaining group and R9-R11 being a hydrogen atom or a monovalent organic group having 1-6 carbon atoms, (c) two groups among R9-R11 form a 3-8 membered cyclic structure together with the carbon atoms in the benzene ring to which these groups are bonded, with the remaining group and R6-R8 being a hydrogen atom or a monovalent organic group having 1-6 carbon atoms, or (d) two groups among R6-R8 form a 3-8 membered cyclic structure together with the carbon atoms of the benzene ring to which these groups are bonded, with the remaining group being a hydrogen atom or a monovalent organic group having 1-6 carbon atoms and two groups among R9-R11 form a 3-8 membered cyclic structure together with the carbon atoms in the benzene ring to which these groups are bonded, with the remaining group being a hydrogen atom or a monovalent organic group having 1-6 carbon atoms.