Patent ID: 6838772

Claim:
A semiconductor device comprising: (a) a first insulating film deposited over a semiconductor substrate; (b) an interconnect opening portion formed in the first insulating film; (c) an interconnect disposed in the interconnect opening portion; and (d) a second insulating film formed over the first insulating film and the interconnect, said interconnect having: a first conductor film formed in the interconnect opening portion; a second conductor film formed in the interconnect opening portion via the first conductor film by chemical vapor deposition or ALD and comprised of any one of titanium silicon nitride, tantalum silicon nitride, tantalum nitride and titanium nitride; a third conductor film formed in the interconnect opening portion via the first and second conductor films and comprised of a material having good adhesion with copper; and a fourth conductor film formed in the interconnect opening portion via the first, second and third conductor films and having copper as a main component.