Patent ID: 8993405
Filing Date: 2015-03-31
Classification: H01L

Abstract:
1. A method of forming a capacitor structure, comprising: forming a plurality of lower intermetal dielectric (IMD) layers over a substrate, each of the plurality of lower IMD layers having a first thickness; forming a first metal layer over the plurality of lower IMD layers; forming at least one middle IMD layer over the first metal layer, the at least one middle IMD layer having a second thickness greater than the first thickness; forming a second metal layer over the at least one middle IMD layer; forming at least one capacitor in the second metal layer and extending through the at least one middle IMD layer to the first metal layer; forming an opening in the second metal layer immediately adjacent to, and outside of, the at least one capacitor; and forming a metal contact in the opening in the second metal layer and in contact with the at least one capacitor.