Patent ID: 6649958
Filing Date: 2003-11-18
Classification: H01L

Abstract:
A semiconductor device comprising:a first insulator capacitor formed on a substrate; and a second insulator capacitor formed on said substrate; and having a higher capacitance than a capacitance of said first insulator capacitor, characterized in that said first insulator capacitor is comprised of a first diffusion region serving as a lower electrode formed on said substrate, a first insulating film serving as both an interlayer insulating film and a dielectric film of the first insulator capacitor, and formed on said first diffusion region, a second insulating film serving as a part of the dielectric film of the first insulator capacitor and formed on said first insulating film, and a conductive material film formed on said second insulating film serving as an upper electrode; said second insulator capacitor is comprised of a second diffusion region serving as a lower electrode formed on said substrate, said second insulating film serving as a dielectric layer and formed on said second diffusion region, and a conductive material formed on said second insulating film serving as an upper electrode; and the capacitance of said first insulator capacitor is determined by a formation area of said dielectric film.