Patent ID: 6329720
Filing Date: 2001-12-11
Classification: H01L

Abstract:
An integrated circuit structure formed on a silicon semiconductor substrate and having a local interconnect thereon bridging over a conductive member to electrically connect non-adjacent conductive portions of said integrated circuit structure comprising:a) a plurality of active devices formed in said silicon semiconductor substrate, each of said active devices having one or more silicon contact portions comprising non-adjacent conductive portions of said integrated circuit structure;b) a silicon oxide region formed in the surface of said silicon semiconductor substrate between two or more of said silicon contact portions;c) said conductive member positioned on an upper surface of said silicon oxide region;d) a layer of silicon oxide, comprising a metal silicide contact mask which also serves as the sole insulation layer separating said conductive member from said local interconnect to be formed over said layer of silicon oxide, formed directly over said conductive member and in contact with portions of said silicon oxide region on first and second sides of said conductive member;e) openings in said layer of silicon oxide in registry with said silicon contact portions to thereby expose one or more of said silicon contact portions on each of said first and second sides of said conductive member;f) metal silicide contacts formed on the upper surface of each of said silicon contact portions exposed by said openings in said layer of silicon oxide; andg) said local interconnect formed over said layer of silicon oxide and in electrical contact with one or more of said metal silicide contacts on each of said first and second sides of said conductive member;whereby said layer of silicon oxide, formed with openings therein to permit selecting siliciding of said exposed silicon contact portions, further serves as a sole insulation layer over said conductive member to permit formation of said local interconnect which bridges over said conductive member to thereby permit electrical interconnect of metal silicide contacts respectively formed on said first and second sides of said conductive member.