Patent ID: 6737304
Filing Date: 2004-05-18
Classification: H01L

Abstract:
A method for manufacturing a semiconductor device comprising the steps of:forming a semiconductor film over a substrate; introducing a p-type impurity element into said semiconductor film; patterning said semiconductor film to form a semiconductor island after the introduction of said p-type impurity element; forming a gate insulating film on said semiconductor island; introducing a first n-type impurity element into said semiconductor island to form a first impurity region; irradiating a light to activate said first n-type impurity element in said first impurity region; forming a gate electrode on said gate insulating film so that said gate electrode partially overlaps said first impurity region with said gate insulating film interposed therebetween; and introducing a second n-type impurity element into said semiconductor island to form a second impurity region by using said gate electrode as a mask.