Patent ID: 6797619
Filing Date: 2004-09-28
Classification: H01L

Abstract:
A method of forming a metal wire of a semiconductor device comprising:doping a junction area of a semiconductor substrate with a first dopant; forming an interlayer insulating film on the junction area; forming a contact hole with a side wall in the interlayer insulating film to expose the junction area by etching the interlayer insulating film; forming a spacer insulating film on the side wall of the contact hole and doping the spacer insulating film and the junction area with said first dopant; forming a metal barrier layer by sequentially depositing a titanium film and a titanium nitride film on the interlayer insulating film including the contact hole; forming a titanium silicide film on the resultant material having the metal barrier layer; and forming a metal wire by forming a tungsten layer on the titanium nitride film and patterning the tungsten layer.