Patent ID: 6806178
Filing Date: 2004-10-19
Classification: H01L

Abstract:
A method for fabricating a semiconductor device, comprising the steps of:(a) forming a gate insulating film on a semiconductor substrate; (b) depositing a conductive film on the gate insulating film; (c) forming a silicon nitride film covering both surfaces of the semiconductor substrate after step (b); (d) patterning the conductive film and a portion of the silicon nitride film located on the principal plane side of the semiconductor substrate to form a gate electrode and a gate-top protection film; (e) implanting impurity ions in the semiconductor substrate to form source/drain regions after the step (d); (f) performing annealing for activation of the impurities implanted in the source/drain regions; and (g) removing a portion of the silicon nitride film located on the back side of the semiconductor substrate after step (c) and before step (f).