Patent ID: 7687877
Filing Date: 2010-03-30
Classification: H01L

Abstract:
1. An interconnect structure comprising: a dielectric material having a dielectric constant of 4.0 or less and comprising a plurality of conductive features embedded therein, said dielectric material having an upper surface that is located beneath an upper surface of each of said plurality of conductive features; a first dielectric cap located on said upper surface of said dielectric material and extending onto at least a portion of said upper surface of each of said plurality of conductive features, said first dielectric cap forming an interface with each of said plurality of conductive features that is opposite to an electrical field that is generated by neighboring conductive features; and a second dielectric cap located on an exposed portion of said upper surface of each of said plurality of conductive features not covered with said first dielectric cap, said second dielectric cap further covering on an exposed surface of said first dielectric cap.