Patent ID: 6344410
Filing Date: 2002-02-05
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:providing a semiconductor with a first dielectric layer formed thereon; forming an opening in said first dielectric layer; forming a first conductive layer in said opening in said first dielectric layer; forming a second dielectric layer on said first dielectric layer and said first conductive layer; forming an opening in said second dielectric layer and exposing a portion of said first conductive layer; forming an adhesion layer on said exposed portion of said first conductive layer of a material selected from a group consisting of cobalt, nickel, an alloy thereof, and a combination thereof; forming a barrier layer on said adhesion layer of a material selected from a group consisting of tungsten, titanium, tantalum, an alloy thereof, and a combination thereof; and connecting an external electrical connection to said barrier layer, said external electrical connection uses a material selected from a group consisting of copper, aluminum, gold, silver, an alloy thereof, and a combination thereof.