Patent ID: 6413842
Filing Date: 2002-07-02
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, said method comprising the steps of:forming an amorphous semiconductor film on an insulating surface; adding a material into at least a portion of the amorphous semiconductor film to form a material additional region, said material being capable of promoting a crystallization of the amorphous semiconductor film; crystallizing the amorphous semiconductor film to form a crystalline semiconductor film; patterning the crystalline semiconductor film to form a crystalline semiconductor island; forming a gate electrode adjacent to the crystalline semiconductor island with a gate insulating film interposed therebetween; introducing an impurity into the crystalline semiconductor island to form a first impurity region, a second impurity region and a channel region formed between the first and second impurity regions, wherein a crystal growth extends from the material additional region through the channel region in the crystalline semiconductor island and finishes in a portion of the other one of the first and second impurity regions.