MONOMER, POLYMER, CHEMICALLY AMPLIFIED POSITIVE RESIST COMPOSITION, AND PATTERNING PROCESS
申请人:Hatakeyama Jun
公开号:US20110294070A1
公开(公告)日:2011-12-01
A polymer is obtained from a hydroxyphenyl methacrylate monomer having an acid labile group substituted thereon. A positive resist composition comprising the polymer as a base resin has a very high contrast of alkaline dissolution rate before and after exposure, a high resolution, a good profile and minimal line edge roughness of a pattern after exposure, a retarded acid diffusion rate, and good etching resistance.