Patent ID: 7033871
Filing Date: 2006-04-25
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: forming a semiconductor film having an amorphous structure; adding a metal element to the semiconductor film having an amorphous structure; crystallizing the semiconductor film having an amorphous structure to form a semiconductor film having a crystalline structure; forming an insulating film over the semiconductor film having a crystalline structure; forming a resist mask over the insulating film; patterning the insulating film by using the resist mask for forming a mask; removing the resist mask; selectively adding a rare gas element to the semiconductor film having a crystalline structure by using the mask to form an impurity region; gettering the metal element to the impurity region; and removing the impurity region, wherein the step of selectively adding the rare gas element is conducted in an atmosphere containing the rare gas element and water vapor.