Hydroxyphenyl copolymers and photoresists comprising same

The present invention relates to new copolymers and use of such copolymer as a resin binder component for photoresist compositions, particularly chemically-amplified positive-acting resists. Polymers of the invention include repeat units of 1) meta-hydroxystyrene groups, 2) para-hydroxystyrene group...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SINTA ROGER F, PANDYA ASHISH, ITO HIROSHI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates to new copolymers and use of such copolymer as a resin binder component for photoresist compositions, particularly chemically-amplified positive-acting resists. Polymers of the invention include repeat units of 1) meta-hydroxystyrene groups, 2) para-hydroxystyrene groups, and 3) photoacid-labile groups.