Patent ID: 6420751
Filing Date: 2002-07-16
Classification: H01L

Abstract:
A semiconductor device, comprising:a semiconductor substrate; a first conductive layer provided on a surface of said semiconductor substrate; a first interlayer insulating film provided on said surface of the semiconductor substrate and covering said first conductive layer; a gate electrode provided on said first interlayer first interlayer insulating film and having upper and lower surfaces; a second interlayer insulating film provided on said first interlayer insulating film and covering said gate electrode; a contact hole provided to penetrate through said second interlayer insulating film, said gate electrode and said first interlayer insulating film having a bottom portion extending radially outward to expose said first conductive layer; a least one of source and drain regions formed filled in said bottom portion of said contact hole and connected to said first conductive layer; a channel semiconductor layer formed filled in said contact hole on a surface of said one of said source and drain regions and opposing to said gate electrode; the other one of said source and drain regions formed filled in said contact hole on a surface of said channel semiconductor layer; and a gate insulating film provided between said gate electrode and said channel semiconductor layer.