Patent ID: 8999801
Filing Date: 2015-04-07
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: forming a first insulating film on a semiconductor substrate; forming a first semiconductor layer on the first insulating film, and forming a mask on an upper face of the first semiconductor layer, the first semiconductor layer including: performing, using the mask, a first ion implantation to implant ions into substantially the entire first region through the first and second side faces of the first region of the first semiconductor layer to transform the first region to an amorphous semiconductor; performing, after the first ion implantation is performed, a first heat treatment including: forming, after the mask is removed, a gate insulating film at least on the first and second side faces of the first region of the first semiconductor layer; forming a gate electrode on the gate insulating film; forming gate sidewalls made of an insulating material on side faces of the gate electrode on sides of the second and third regions; and performing a second ion implantation at least into the second and third regions of the first semiconductor layer.