Patent ID: 7202149

Claim:
A manufacturing method of a semiconductor device, comprising: forming a first semiconductor layer and a second semiconductor layer over a substrate; forming a first insulating film over the first semiconductor layer and the second semiconductor layer; forming a first conductive film over the first insulating film; forming a second conductive film over the first conductive film; processing the second conductive film and the first conductive film so as to form a first gate electrode having a stacked layer of the second conductive film and the first conductive film over the first semiconductor layer with the first insulating film interposed therebetween, a portion of the first conductive film exposed from the second conductive film; forming a second insulating film over the first gate electrode and the first insulating film; forming a third conductive film over the second insulating film; forming a fourth conductive film over the third conductive film; and processing the fourth conductive film and the third conductive film so as to form a second gate electrode having a stacked layer of the fourth conductive film and the third conductive film over the second semiconductor layer with the first and second insulating films interposed therebetween, a portion of the third conductive film exposed from the fourth conductive film.