ONIUM SALT, CHEMICALLY AMPLIFIED POSITIVE RESIST COMPOSITION, AND RESIST PATTERN FORMING PROCESS

This invention relates to an onium salt, a chemically amplified positive resist composition, and a resist pattern forming process. The invention provides an onium salt capable of generating an acid having an adequate acid strength and low diffusion, a chemically amplified positive resist composition...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Fukushima, Masahiro, Masunaga, Keiichi, Matsuzawa, Yuta, Watanabe, Satoshi, Kotake, Masaaki
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS SPECIALLY ADAPTED THEREFOR CHEMISTRY CINEMATOGRAPHY ELECTROGRAPHY HETEROCYCLIC COMPOUNDS HOLOGRAPHY MATERIALS THEREFOR METALLURGY ORGANIC CHEMISTRY ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS
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Beschreibung
Zusammenfassung:	This invention relates to an onium salt, a chemically amplified positive resist composition, and a resist pattern forming process. The invention provides an onium salt capable of generating an acid having an adequate acid strength and low diffusion, a chemically amplified positive resist composition comprising the onium salt, and a resist pattern forming process using the composition. The chemically amplified positive resist composition comprises an onium salt capable of generating an acid having an adequate acid strength and suppressed diffusion is provided.