Patent ID: 8063007
Filing Date: 2011-11-22
Classification: H01L

Abstract:
1. A removal cleaning method for a semiconductor substrate or a semiconductor device with metal wirings, comprising the steps of: forming a thin film on said semiconductor substrate or said semiconductor device with metal wirings; forming a predetermined resist pattern on said thin film by lithography; etching said semiconductor substrate or said semiconductor device with metal wirings to selectively remove said thin film based on said predetermined pattern; ashing said semiconductor substrate or said semiconductor device with metal wirings to remove said resist; applying a remover composition to remove a remaining deposition on said semiconductor substrate or said semiconductor device with metal wirings, wherein the remover composition comprises a dissolution agent having an alumina dissolution amount as measured according to the standard test (A-1) of 10 ppm or more, and an inhibitor having an aluminum etching amount as measured according to the standard test (B-1) of 7 nm or less, and the remover composition substantially does not contain a fluorine-containing compound; and wherein said inhibitor is at least one selected from the group consisting of ammonium sulfate, tetramethylammonium sulfate, methylethanolamine sulfate, methyldiethanolamine sulfate, and ammonium chloride.