Patent ID: 6208004
Filing Date: 2001-03-27
Classification: H01L,Y10S

Abstract:
A semiconductor device including a transistor gate electrode located over a semiconductor material having source and drain regions, the device comprising: an underlying polysilicon film, an overlying refractory metal nitride film, a silicon nitride film over the refractory metal nitride film, and an overlying oxidized polysilicon film; and, formed after photolithographic patterning, a thin silicon nitride side-wall film against the underlying polysilicon film, the refractory metal nitride film, the silicon nitride film, and overlying the oxidized polysilicon film; and ion implantation dopants in the source and drain regions, and also penetrating the underlying polysilicon film, the refractory metal nitride, the silicon nitride, and the overlying oxidized polysilicon film.