Patent ID: 7786005

Claim:
A method for manufacturing a semiconductor device, comprising: forming a TiN film over a semiconductor substrate; forming an interlayer insulating film on a surface of said TiN film; forming a resist film on a surface of said interlayer insulating film; etching said interlayer insulating film using said resist film as a mask to form an opening, thereby partially exposing said TiN film and forming a layer containing C, F and Ti on the exposed portion of the TiN film; after said etching said interlayer insulating film using said resist film as a mask to form an opening, plasma-processing the exposed portion of said TiN film to remove said layer; and after said plasma-processing the exposed portion of said TiN film to remove said layer, stripping said resist film by plasma stripping, wherein said plasma-processing is conducted at a temperature wherein oxygen is not in an activated state throughout processing, and in a gas that is free of organic fluoride, and wherein said layer is removed by applying electric power to a lower electrode of less than 500 W.