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US07700256B2 Phenolic/alicyclic copolymers and photoresists 有权
酚醛/脂环族共聚物和光致抗蚀剂

Phenolic/alicyclic copolymers and photoresists
摘要:
The present invention relates to new polymers that contain repeat units of phenol and photoacid-labile esters that contain an alicyclic group, preferably a bulky group that suitably may contain 7 to about 20 carbons, such as an alkyladamantyl, ethylfencyl, tricyclo decanyl, or pinanyl group. Polymers of the invention are useful as a component of chemically-amplified positive-acting resists.
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