Patent ID: 8334212
Filing Date: 2012-12-18
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising: forming a gate electrode by anisotropically etching a gate electrode film having a metal-containing film formed on a main surface of a semiconductor substrate via a gate insulating film to expose a portion of the gate insulating film; forming a modified film on a side wall of the metal-containing film by modifying the side wall of the metal-containing film; removing the exposed portion of the gate insulating film and recessing a portion of the gate insulating film sandwiched between the semiconductor substrate and the metal-containing film so as to recede from the modified side wall of the metal-containing film by isotropically etching the gate insulating film; and removing a side portion of the metal-containing film protruding from the receded gate insulating film by isotropically etching the metal-containing film.