Patent ID: 7095120
Filing Date: 2006-08-22
Classification: H01L

Abstract:
1. A semiconductor integrated circuit device, comprising: a first interconnect formed over a semiconductor substrate; an insulating film formed over a semiconductor substrate and on said first interconnect; a hole formed in said insulating film and having a bottom from which the surface of said first interconnect is partly exposed; a first conductive film formed on the bottom and sidewall of said hole and being in contact with said first interconnect; and a second conductive film formed on said first conductive film and embedded inside of said hole, wherein said first conductive film includes a perpendicular portion arranged along the sidewall of said hole, a corner portion arranged near the corner of said hole and a level portion arranged along the bottom of said hole, wherein the thickness of said level portion of said first conductive film is gradually increasing from the center of said hole toward outside, and wherein the resistance of said first interconnect and the resistance of said second conductive film are lower than the resistance of said first conductive film.