Patent ID: 7714367

Claim:
A semiconductor device comprising: a first semiconductor layer formed over a substrate; a second semiconductor layer formed over the substrate; a first insulating film formed over the first semiconductor layer and the second semiconductor layer; a first gate electrode having a stacked layer of a first conductive film and a second conductive film formed over the first semiconductor layer with the first insulating film interposed between a first gate electrode and a first semiconductor layer, the second conductive film being stacked over the first conductive film and a portion of the first conductive film exposed from the second conductive film; a second insulating film formed over the first insulating film; and a second gate electrode having a stacked layer of a third conductive film and a fourth conductive film formed over the second semiconductor layer with the first insulating film and the second insulating film interposed between a second gate electrode and a second semiconductor layer, the fourth conductive film stacked over the third conductive film and a portion of the third conductive film exposed from the fourth conductive film.