Patent ID: 7037779
Filing Date: 2006-05-02
Classification: G02F,H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: forming a base insulating film on a substrate; forming an amorphous semiconductor film on the base insulating film; introducing a metallic element to the amorphous semiconductor film; crystallizing the amorphous semiconductor film to form a crystalline semiconductor film; forming a gate insulating film on the crystalline semiconductor film; forming a gate electrode on the gate insulating film; introducing an impurity element in selected regions of the crystalline semiconductor film to form a source region and a drain region; forming an interlayer insulating film on the gate electrode; forming at least one contact hole in the interlayer insulating film, the contact hole reaching one of the source region and the drain region; forming a first conductive film on the interlayer insulating film and in the contact hole so as to reach the one of the source region and the drain region, the first conductive film containing an impurity element belonging to the group gettering by thermal annealing the metallic element contained in the crystalline semiconductor film; and forming a second conductive film on the first conductive film.