Patent ID: 6555448
Filing Date: 2003-04-29
Classification: H01L

Abstract:
A semiconductor manufacturing method comprising:forming an amorphous silicon film on a substrate; introducing a catalytic element into the amorphous silicon film for accelerating crystallization and performing a first heat treatment to crystallize the amorphous silicon film into a crystalline silicon film; forming a mask layer having an opening defined therein on a surface of the crystalline silicon film; forming a sacrifice layer which at least partially covers an outer surface of the mask layer, and which also covers a portion of the crystalline silicon film at an area of the opening in the mask layer; introducing a getter element into the sacrifice layer and the portion of the crystalline silicon film at the area of the opening for gettering the catalytic element; and performing a second heat treatment to getter the catalytic element from the crystalline silicon film to the sacrifice layer through the opening defined in the mask layer.