Patent ID: 7915135
Filing Date: 2011-03-29
Classification: H01L,Y10T

Abstract:
1. A method of making a multi-layer structure for a metal-insulator-metal capacitor, comprising: providing a substrate; forming a bottom electrode plate layer on the substrate, wherein a first Ti/TiN layer comprising a titanium layer and a titanium nitride layer on the titanium layer to serve as a top anti-reflection coating (top ARC) of the bottom electrode plate layer is formed using a first and a second physical vapor deposition (PVD) processes at a temperature in a range from 25 to 400° C.; forming a first capacitor dielectric layer on the top anti-reflection coating; forming a middle electrode plate layer on the first capacitor dielectric layer; forming a second capacitor dielectric layer on the middle electrode plate layer; and forming a top electrode plate layer on the second capacitor dielectric layer.