Patent ID: 6897005
Filing Date: 2005-05-24
Classification: C08F,G03F,Y10S

Abstract:
1. A resist composition comprising: (a) a photosensitive polymer comprising a copolymer of alkyl vinyl ether and maleic anhydride, represented by the following structure: wherein X is a cyclic alkyl vinyl ether, which is represented by the structure wherein y is one of the integer values 1 through 4, and R (b) a photoacid generator (PAG); wherein the PAG is selected from the group consisting of triphenylsulfonium triflate, triphenylsulfonium antimonite, diphenyliodonium triflate, diphenyliodonium antimonite, methoxydiphenyliodonium triflate, di-t-butyldiphenyliodonium triflate, 2,6-dinitrobenzyl sulfonates, pyrogallol tris(alkylslulfonates), N-hydroxysuccinimide triflate, norbornene-dicarboximide-triflate, triphenylsulfonium nonaflate, diphenyliodonium nonaflate, methoxydiphenyliodonium nonaflate, di-t-butyldiphenyliodonium nonaflate, N-hydroxysuccinimide nonaflate, norbornene-dicarboximide-nonaflate, triphenysulfonium perfluorooctanesulfonate (PFOS), diphenyliodonium PFOS, methoxydiphenyliodonium PFOS, di-t-butyldiphenyliodonium triflate, N-hydroxysuccinimide PFOS, and norbornene-dicarboximide PFOS, or mixtures thereof.