Resist compositions and patterning process

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

Reexamination Certificate

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C430S326000, C430S907000, C526S242000, C526S281000

Reexamination Certificate

active

07001707

ABSTRACT:
A resist composition comprising a blend of a cyclic polymer having alcoholic groups as soluble groups and a polymer having carboxyl or hexafluoroalcohol groups whose hydrogen atoms are replaced by acid labile groups as a base resin forms a resist film which is improved in transparency, alkali dissolution contrast and plasma etching resistance.

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Kodama et al., Spie 2002, vol. 4690 p. 76 to 83.

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