Patent ID: 7791202

Claim:
A semiconductor device comprising: a substrate; an insulating film having a recessed portion in a surface thereof formed above the substrate; a metal film formed above the insulating film; an oxidized metal film of the metal film inserted between the insulating film and the metal film; a wiring metal film formed above the metal film; and a compound layer of the metal film and the wiring metal film inserted between the metal film and the wiring metal film, wherein diffraction intensity of the oxidized metal film by X-ray diffractometry is not more than ten times diffraction intensity of the compound layer, wherein an oxygen content of the metal film in a portion on a side of the insulating film is higher than the oxygen content of the metal film in a portion on a side of the wiring metal film, and wherein the oxygen content of the metal film gradually changes in a direction perpendicular to the planar surface of the substrate.