ETCHING SOLUTION AND ETCHING CONCENTRATE FOR MULTILAYER FILM, AND ETCHING METHOD

Provided is an etching solution which is for etching a multilayer film composed of a copper layer having a large film thickness and a titanium base layer, and can be used even when the concentration of metal ions is 8,000 ppm or higher. The etching solution includes (a) hydrogen peroxide, (b) a fluo...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SHIRAHAMA YUJI, CHAKUNO MAKOTO
Format:	Patent
Sprache:	chi ; 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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