Patent ID: 7691683
Filing Date: 2010-04-06
Classification: H01L

Abstract:
1. A method of forming an electrode, comprising: forming a dielectric layer over a first conductive layer, a bottom surface of the dielectric layer being between the first conductive layer and a top surface of the dielectric layer; forming an opening in said dielectric layer so as to expose a portion of said first conductive layer; forming an adhesion layer over said dielectric layer and said exposed portion of said first conductive layer; forming a second conductive layer over said adhesion layer; forming a third conductive layer only within said opening, said third conductive layer being arranged over, in direct physical contact with, and capping said second conductive layer and said adhesion layer within said opening, said third conductive layer being formed such that an electrode contact surface of the third conductive layer extends to the top surface of the dielectric layer and has an area equal to the size of the opening.