Disclosed are a copolymer represented by the formula I and a chemical amplification resist containing the copolymer, which can be easily controlled in sensitivity by regulating the content and kind of the norbornene derivatives in the matrix polymers in addition to being superior in adherence to substrate and dry etch resistance:
wherein, X is selected from the group consisting of the following general formulas II, III and IV; and, l, m, n and o each are a repeating number not more than 0.5, satisfying the condition that l+m+n+o=1 and 0.4≤o≤0.5:
本发明公开了一种由式 I 表示的共聚物和一种含有该共聚物的
化学放大抗蚀剂,该抗蚀剂除了具有优异的基底附着性和耐干蚀刻性之外,还可以通过调节基体
聚合物中
降冰片烯衍
生物的含量和种类来轻松控制其灵敏度:
其中,X 选自以下通式 II、III 和 IV 所组成的组;l、m、n 和 o 各为不大于 0.5 的
重复数,满足 l+m+n+o=1 和 0.4≤o≤0.5 的条件: