申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US20170184967A1
公开(公告)日:2017-06-29
A polymer comprising recurring units containing a specific lactone ring and having an alkyl group on γ-butyrolactone skeleton of fused ring lactone and an alkyl ester substituent group intervening between the lactone structure and the polymer backbone is provided. A resist composition comprising the polymer as base resin is improved in such properties as DOF margin and MEF and quite effective for precise micropatterning.
提供一种聚合物,其中包含含有特定内酯环的重复单元,并且在融合环内酯的γ-丁内酯骨架上具有烷基基团,以及在内酯结构和聚合物主链之间具有烷基酯取代基团。以该聚合物为基础树脂的抗蚀组合物在DOF边缘和MEF等性能方面得到改善,并且非常有效用于精确微图案化。