Patent ID: 8207568
Filing Date: 2012-06-26
Classification: H01L

Abstract:
1. A MIM capacitor formed by the following process: providing a substrate including a dielectric layer formed on a first conductive layer and a second conductive layer formed over said dielectric layer; positioning a hard mask over said second conductive layer; positioning a resist over the hard mask as a mask pattern; removing exposed portions of said hard mask and said second conductive layer to form an upper plate of a MIM capacitor having edges substantially aligned with respective edges of said mask; undercutting said second conductive layer so that edges of said second conductive layer are located under said hard mask; and removing exposed portions of said dielectric layer and said first conductive layer using said hard mask to form a capacitor dielectric layer and a lower plate of said MIM capacitor having edges substantially aligned with respective edges of said hard mask, wherein the MIM capacitor comprises: