Patent ID: 6906420
Filing Date: 2005-06-14
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; a first conductor film supported by the substrate; an insulating film formed on the substrate to cover the first conductor film, an opening being formed in the insulating film; and a second conductor film, which is formed within the opening of the insulating film and is in electrical contact with the first conductor film, wherein the second conductor film includes: a silicon-containing titanium nitride layer formed within the opening; a metal layer formed over the silicon-containing titanium nitride layer, a concentration of silicon in a portion of the silicon-containing titanium nitride layer, which is formed over the bottom of the opening, is lower than that in another portion of the silicon-containing titanium nitride layer, which is formed over the inner sidewall of the opening; and a silicide metal layer formed in between the silicon-containing titanium nitride layer and the metal layer.