Patent ID: 6022787
Filing Date: 2000-02-08
Classification: H01L

Abstract:
A method for providing signal isolation between signal carrying conductors, portions of which extend in close proximity to one another in an integrated circuit device that is formed on an electrically conductive substrate, at least one of said conductors carrying fast switching signals, said method comprising:embedding at least one of said conductors in a dielectric material; andfabricating an isolation structure of an electrically conductive material that extends around said embedded conductor along a portion of the length of said embedded conductor on the substrate of said integrated circuit device to partially enclose said embedded conductor within electrically conductive material on said integrated circuit device, wherein fabricating said isolation structure includes:forming first and second planar layers of electrically conductive material on said integrated circuit device in a parallel spaced relationship such that one of said planar layers is not coextensive with said substrate and is insulated from said substrate by an insulating material; andforming on said integrated circuit device a continuous segment of electrically conductive material that interconnects said first and second planar layers to form a structure of electrically conductive material that partially encloses said embedded conductor.