Patent ID: 9087783
Filing Date: 2015-07-21
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising: forming a gate insulating film above a semiconductor substrate; forming a gate film above the gate insulating film; forming a hard mask film above the gate insulating film; patterning the hard mask with a first mask pattern; processing the patterned hard mask film into a gate pattern with a second mask pattern; patterning the gate film and the gate insulating film with the hard mask film having the gate pattern as a mask; forming a spacer insulating film above the semiconductor substrate with the patterned gate film and the gate insulating film; forming above the spacer insulating film a third mask pattern covering an edge of the patterned gate film and the gate insulating film; and etching the spacer insulating film with the third mask patterns as the mask to form a sidewall insulating film of the spacer insulating film on side walls of the patterned gate film and the gate insulating film, leaving the spacer insulating film below the third mask pattern.