Patent ID: 8237244

Claim:
A semiconductor device comprising: a semiconductor substrate having a surface; a transistor located at the surface of the semiconductor substrate; a lower electrode supported by the semiconductor substrate, spaced from the transistor, and having a first area opposite the surface of the semiconductor substrate; a first CVD insulating film supported by the lower electrode and extending beyond the lower electrode, in a direction generally parallel to the surface of the semiconductor substrate, wherein the first CVD insulating film buries and is in physical contact with the transistor which is located at the surface of the semiconductor substrate, has a thickness at the lower electrode in a range from 30 nm to 50 nm, and has a second area, directly opposite the lower electrode, that is smaller than the first area; a high-dielectric constant film on the first CVD insulating film, opposite the lower electrode, constituted of a high-k material having a dielectric constant of at least 10, wherein the high-dielectric constant film has a third area, opposite the first CVD insulating film that is smaller than the second area; and an upper electrode supported by the high-dielectric constant film.