Patent ID: 6770522
Filing Date: 2004-08-03
Classification: H01L

Abstract:
A manufacturing method of a semiconductor device, comprising the steps of:(a) forming a conductive film on a semiconductor substrate; (b) patterning said conductive film by a photolithography technique and an etching technique; (c) forming a first active layer by performing an impurity injection in proximity of said patterned conductive film in a surface of said semiconductor substrate; (d) forming an interlayer insulating film on a surface of said semiconductor substrate; (e) forming a contact hole in which both said first active layer and said conductive film are exposed in said interlayer insulating film by a photolithography technique and an etching technique; (f) forming a second active layer by performing an impurity injection on a surface of said semiconductor substrate which is exposed in said contact hole; and (g) forming a sidewall insulating film on a side of said conductive film after said step (b) before said step (c), wherein in said step (c), said first active layer is formed by performing an impurity injection with said sidewall insulating film and said conductive film as masks and in said step (e), furthermore, said sidewall insulating film which is exposed in said contact hole is removed.