Patent ID: 7763921

Claim:
A semiconductor device comprising: an impurity diffusion region formed in a semiconductor substrate; an interlayer insulating film formed over the semiconductor substrate and including a hole; a conductive plug formed in the hole and electrically connected to the impurity diffusion region; a conductive oxygen barrier film formed on the conductive plug and on the interlayer insulating film around the conductive plug; a conductive anti-diffusion film formed over a top surface of the conductive oxygen barrier film; and a capacitor including a lower electrode formed on the conductive anti-diffusion film and exposing any of platinum and palladium on an upper surface, a capacitor dielectric film made of a ferroelectric material, and an upper electrode, wherein the conductive anti-diffusion film is made of a non-oxide conductive material for preventing the diffusion of a constituent element of the capacitor dielectric film.