Patent ID: 8093637
Filing Date: 2012-01-10
Classification: H01G,H01L

Abstract:
1. A metal-insulator-metal (MIM) capacitor comprising: a first intermediate dielectric; a first capacitor electrode formed in a surface of the first intermediate dielectric; a second intermediate dielectric formed on the first intermediate dielectric, and comprising side walls defining has an opening within the second intermediate dielectric that exposes at least part of the first capacitor electrode; a first electrically conducting diffusion barrier layer formed at least on a surface of the at least part of the first capacitor electrode exposed by the opening, wherein the wherein the side walls of the second intermediate dielectric extend vertically between an upper surface of the second intermediate dielectric and an upper surface of the first electrically conducting diffusion barrier layer; a capacitor dielectric on at least a portion of the upper surface of the first electrically conducting diffusion barrier layer and in direct contact with the side walls of the second intermediate dielectric; and a second capacitor electrode formed on a surface of the capacitor dielectric, wherein the second capacitor electrode comprises only a second electrically conducting diffusion barrier layer.