Patent ID: 6066891
Filing Date: 2000-05-23
Classification: H01L

Abstract:
An electrode for a semiconductor device, comprising:a semiconductor substrate;an interlayer insulator film having a contact hole formed on said semiconductor substrate;a titanium nitride barrier layer formed on said interlayer insulator film so as to contact said semiconductor substrate via said contact hole, said barrier layer having a portion disposed in said contact hole and a portion disposed outside said contact hole;an aluminum wiring layer formed on said barrier layer; anda distortion relaxation layer having a portion disposed in said contact hole and a portion disposed outside said contact hole, with said portion outside said contact hole covering more than 40% of said portion of said barrier layer disposed outside said contact hole, said portion outside said contact hole having a film thickness of at least 10 nm and being either an Al.sub.3 Ti layer or an intermetallic compound layer that includes Al.sub.3 Ti, said distortion relaxation layer being located at an interface between said barrier layer and said aluminum wiring layer.