发明申请
US20110294047A1 PHOTOMASK BLANK, RESIST PATTERN FORMING PROCESS, AND PHOTOMASK PREPARATION PROCESS 有权
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PHOTOMASK BLANK, RESIST PATTERN FORMING PROCESS, AND PHOTOMASK PREPARATION PROCESS
摘要:
A photomask blank has a resist film comprising (A) a base resin, (B) an acid generator, and (C) a basic compound. The resist film further comprises (D) a polymer comprising recurring units having a side chain having a fluorinated hydrocarbon group which contains a carbon atom to which a hydroxyl group is bonded and vicinal carbon atoms bonded thereto, the vicinal carbon atoms having in total at least two fluorine atoms bonded thereto. Addition of polymer (D) ensures uniform development throughout the resist film, enabling to form a resist pattern having high CD uniformity.
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