Patent ID: 7042093
Filing Date: 2006-05-09
Classification: H01L

Abstract:
1. A semiconductor device comprising: a first insulating film formed on a semiconductor substrate; a second insulating film consisting of insulating metal nitride and formed on said first insulating film; a recess formed through said second insulating film and reaching a position deeper than an upper surface of said first insulating film; a conductive member filled in said recess; a cap layer formed on said second insulating film and said conductive member, a region of said cap layer on said conductive member and a region of said cap layer on said second insulating film has a same constituent element, an electric resistance of the region on the conductive member being lower than an electric resistance of the region on said second insulating film; and an upper layer wiring pattern formed on said cap layer and electrically connected to the region of said cap layer on said conductive member.