Patent ID: 9589787
Date: 2017-03-07
CPC Classifications: H01L

Claim:
1. A manufacturing method of a semiconductor device comprising the steps of: (a) providing a semiconductor wafer over which a conductor film containing aluminum as the main component is formed; (b) forming a resist film over said conductor film; (c) patterning said resist film; (d) patterning said conductor film by etching with said patterned resist film used as a mask; and (e) removing said patterned resist film, wherein said step (d) includes the steps of: (d1) carrying said semiconductor wafer in a processing room; and (d2) introducing at least an etching gas for etching said conductor film and a gas for forming a sidewall polymer with which the side face of said conductor film being patterned is covered into said processing room and etching said conductor film, wherein said step (e) includes the steps of: (e1) introducing at least a gas containing oxygen into said processing room; (e2) starting electric discharge for transforming said gas including oxygen into plasma; and (e3) introducing a water vapor into said processing room, wherein said step (e3) is applied either simultaneously with or after said step (e2), and wherein said conductor film comprises a film containing aluminum as the main component and barrier conductor films interposing said film.