Patent ID: 6465150
Filing Date: 2002-10-15
Classification: G03F,Y10S

Abstract:
A radiation-sensitive resin composition comprising:(A) an aromatic sulfonic acid onium salt compound shown by the following formula (1), Z+Xâˆ’â€ƒâ€ƒ(1) â€ƒwherein Z+ represents an onium cation of sulfur or iodine, and Xâˆ’ represents an anion shown by any of the following formulas (1-1) to (1-3); â€ƒand (B) either one or both of a copolymer (I) which comprises a recurring unit shown by the following formula (2) and a recurring unit shown by the following formula (3), â€ƒwherein R1 represents a hydrogen atom or a methyl group, R2 represents a halogen atom or an organic group having 1-6 carbon atoms, and i is an integer from 0 to 3; â€ƒwherein R3 represents a hydrogen atom or a methyl group, R4 represents a tertiary alkyl group having 4-10 carbon atoms, R5 represents a halogen atom or an organic group having 1-6 carbon atoms, and j is an integer from 0 to 3; and a copolymer (II) which comprises a recurring unit shown by the formula (2) and a recurring unit shown by the following formula (4), â€ƒwherein R6 represents a hydrogen atom or a methyl group, R7 represents a linear, branched, or cyclic alkyl group having 1-6 carbon atoms, R8 represents a linear, branched, or cyclic alkyl group having 1-6 carbon atoms, R9 represents a halogen atom or an organic group having 1-6 carbon atoms, and k is an integer from 0 to 3.