Patent ID: 8273613

Claim:
A method for manufacturing a semiconductor device comprising: forming a semiconductor region; forming a gate insulation film over the semiconductor region; forming a gate electrode over the gate insulation film, wherein the gate electrode comprises metal material; forming an oxide layer over and in contact with the gate electrode; doping an impurity element into the semiconductor region to form a low-concentration impurity region in contact with a channel-forming region; after doping, removing a portion of the gate insulation film so as to expose at least a side surface of the semiconductor region; after doping, activating the impurity element by heating; forming a metal film so as to cover at least the side surface of the semiconductor region and a top surface of the gate electrode, wherein the metal film is provided over the gate electrode with the oxide layer interposed therebetween; and forming a metal silicide layer over the semiconductor region, wherein a part of the low-concentration impurity region overlaps with the gate electrode.