Patent ID: 7002199

Claim:
A semiconductor device comprising: a MOS transistor formed on a semiconductor substrate; a first interlayer dielectric film formed on the semiconductor substrate so as to cover the MOS transistor; a first high-dielectric-constant film formed on the first interlayer dielectric film and having an opening portion that reaches the first interlayer dielectric film; a first conductive film containing a metal element and formed to be partially embedded in the opening portion, the first conductive film being in contact with the first high-dielectric constant film, an upper surface of the first high-dielectric-constant film being lower than a top of the first conductive film; an insulating film which is formed between the first interlayer dielectric film and the first high-dielectric-constant film, and is formed from a material different to the first interlayer dielectric film, the first conductive film being in contact with the insulating film; a second high-dielectric-constant film formed on the first conductive film; and a second conductive film formed on the second high-dielectric-constant film.