Patent ID: 8076203
Filing Date: 2011-12-13
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising a Fin field effect transistor, the method comprising: (1) preparing a semiconductor substrate; (2) forming an oxide film on a surface of the semiconductor substrate; (3) forming an isolation region in the semiconductor substrate; (4) forming a mask pattern on the entire semiconductor substrate expect for the isolation region; (5) etching the oxide film away through the mask pattern as a mask to expose the semiconductor substrate; (6) forming a sacrifice oxide film on a part of the semiconductor substrate exposed in step (5); (7) removing the sacrifice oxide film to expose the semiconductor substrate; (8) forming a gate insulating film on the semiconductor substrate exposed in step (7); (9) forming a polysilicon film all over the semiconductor substrate; (10) executing a CMP process on the polysilicon film through the mask pattern as a stopper; (11) forming a metal film all over the polysilicon film; (12) forming a gate electrode by allowing at least a part of the polysilicon film to react with at least a part of the metal film to silicidize the metal; (13) forming a mask A on the gate electrode; (14) removing the metal film through the mask A as a mask; (15) removing the mask pattern; and (16) implanting impurity into the semiconductor substrate through the mask A as a mask to form a source/drain region.