Patent ID: 6333528
Filing Date: 2001-12-25
Classification: H01L,Y10S

Abstract:
A semiconductor device comprising an integrated circuit and a capacitor formed on the integrated circuit,said capacitor comprising a bottom electrode composed of a conductive layer formed on an insulating layer of the integrated circuit, a capacitor dielectric layer composed of one of a ferroelectric layer and dielectric layer having high permittivity formed on the bottom electrode, and a top electrode composed of a conductive layer formed on the capacitor dielectric layer,an interlayer insulating layer formed so as to cover said capacitor, said interlayer insulating layer having contact holes formed therein, said contact holes exposing said top electrode and said bottom electrode,interconnections formed in said contact holes and electrically coupled to said top electrode and said bottom electrode, anda passivation layer is formed to cover the interconnections,said interconnections include a first layer comprising titanium-tungsten,wherein a silicon nitride layer possessing an opening in the part correspondig to the top electrode of the capacitor is provided beneath the passivation layer.