Patent ID: 7749818

Claim:
A method of manufacturing a semiconductor device, comprising: forming an insulating film on a substrate having an insulating surface, the insulating film having at least one opening; forming an amorphous semiconductor film on the insulating film and the opening; crystallizing the amorphous semiconductor film to form a crystalline semiconductor film by melting the amorphous semiconductor film; forming a crystalline semiconductor island by removing at least a portion of the crystalline semiconductor film remaining on the insulating film; exposing side surfaces of at least a portion of the crystalline semiconductor island by removing a part of the insulating film; and forming a gate insulating film in contact with top and side surfaces of at least the portion of the crystalline semiconductor island; forming a gate electrode on the gate insulating film; and forming a source region and a drain region in the crystalline semiconductor island, wherein a channel formation region is between the source region and the drain region, and wherein the portion of the crystalline semiconductor island includes the channel formation region.