Patent ID: 6146964
Filing Date: 2000-11-14
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device: comprising:forming a polysilicon layer on a silicon substrate;forming a first resist pattern on the polysilicon layer;introducing impurity ions into the polysilicon layer with the first resist pattern being used as a mask to form a high density impurity layer within the polysilicon layer;forming a second resist pattern on the polysilicon layer at a region where the first resist pattern is formed, the second resist pattern being greater in size than the first resist pattern so that the region where the first resist pattern is formed and a peripheral region thereof is covered by the second resist pattern; andetching the polysilicon layer including the high density impurity layer using the second resist pattern as a mask so as to etch the high density impurity layer and a portion of the polysilicon layer not covered be the second resist layer.