Patent ID: 6180506
Filing Date: 2001-01-30
Classification: H01L

Abstract:
A method for producing an interconnect device in a semiconductor device, said method comprising:(a) providing a substrate with a dielectric film positioned thereon, said dielectric film having an upper surface;(b) forming a trench in said dielectric film, said trench extending down from said upper surface;(c) depositing a first conductive film over said upper surface of said dielectric film and in said trench without filling said trench;(d) depositing a refractory metal film on said first conductive film including in said trench, without filling said trench;(e) depositing a second conductive film on said refractory metal film and filling said trench; and(f) planarizing by removing portions of said first conductive film, said refractory metal film, and said second conductive film which lie above a plane formed by said upper surface of said dielectric film to form an interconnect device within said trench,said interconnect device having a top surface which is generally co-planar with said upper surface, said top surface being formed of at least said first conductive film, said refractory metal film, and said second conductive film.