Patent ID: 7078311

Claim:
A method for producing a capacitor, comprising the steps of: forming a first conductive layer on a front surface of a silicon substrate, and forming a dielectric layer, and a second conductive layer in sequence on the first conductive layer, the edge of said second conductive layer being recessed from the edge of said dielectric layer, and the edge of said dielectric layer being recessed from the edge of said first conductive layer; forming an insulating layer on the second conductive layer and in contact with the second conductive layer, the dielectric layer, the first conductive layer, and the silicon substrate to cover the second conductive layer, the dielectric layer, the first conductive layer, and the silicon substrate; forming an opening in the insulating layer to expose the second conductive layer formed below the insulating layer; reducing the thickness of the silicon substrate; and forming an opening in the thickness-reduced silicon substrate from a back surface of the thickness-reduced silicon substrate to expose the first conductive layer formed on the front surface of the silicon substrate.