Patent ID: 7993992

Claim:
A method for fabricating a semiconductor device comprising: providing a crystalline silicon film over an insulating surface; forming a gate insulator layer over the crystalline silicon film; forming a gate electrode over the gate insulator layer; forming a source region and a drain region in a self-aligned manner using the gate electrode as a mask in the crystalline silicon film; forming a gate insulator film by etching the gate insulator layer so that-sidewalls of the gate electrode and the gate electrode overlaps the gate insulator film; forming a first metal layer over the gate electrode and in direct contact with the insulating surface, the source region, and the drain region; forming a silicide region in each of the source region and the drain region by reacting the crystalline silicon film with the first metal layer; and selectively etching the first metal layer so that a part of the first metal layer remains over the insulating surface.