ETCHING COMPOSITIONS

An etching composition includes phosphate ions, pyrophosphate ions, polyphosphate ions, or a combination thereof and an oxidant. The etching composition has a neutral or basic pH.

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Bibliographische Detailangaben
1. Verfasser:	JACOBS, Simon Joshua
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	An etching composition includes phosphate ions, pyrophosphate ions, polyphosphate ions, or a combination thereof and an oxidant. The etching composition has a neutral or basic pH.