Patent ID: 8778755
Filing Date: 2014-07-15
Classification: H01L

Abstract:
1. A method for fabricating a metal-insulator-metal capacitor (MIMCap), said method comprising: providing a first metal layer on top of a first oxide layer; depositing a nitride layer on said first metal layer; etching a plurality of trenches through said nitride layer and first metal layer, wherein said first metal layer forms a MIMCap metal layer; filling said trenches within said nitride layer and said first metal layer with a plasma oxide; polishing said plasma oxide using said nitride layer as a polish stop such that said plasma oxide is planar with said nitride layer; removing said nitride layer to expose said first metal layer; depositing a dielectric layer and a second metal layer on said MIMCap metal layer; and etching said dielectric layer and said second metal layer to form a plurality of MIMCap structures.