Patent ID: 6583036
Filing Date: 2003-06-24
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:forming a gate insulating film on a substrate; forming a polysilicon film on said gate insulating film; forming a nitride film on said polysilicon film; forming a resist pattern on said nitride film and subsequently removing an exposed portion of said nitride film which is not covered with said resist pattern, thereby forming a nitride film pattern; removing the exposed portion of said polysilicon film which is not covered with said nitride film; thermally oxidizing the surface of said polysilicon film left after the step of removing the exposed portion of said polysilicon film to simultaneously form a gate electrode and an insulating film on said surfaces of said gate electrode; removing the nitride film pattern on the upper surface of said gate electrode; and forming a silicide on the upper surface of said gate electrode through the insulating film on side surfaces on said gate electrode used as a mask after removing the nitride film pattern.