Patent ID: 6034410
Filing Date: 2000-03-07
Classification: H01L

Abstract:
An integrated circuit device structure, comprising:a silicon substrate, having active devices formed at a first surface thereof;a conductive structure overlying and insulated from a portion of the substrate, and having an opening therethrough exposing a portion of said substrate, said conductive structure being polycrystalline and predominantly comprising silicon;an oxide region recessed into an upper surface of the exposed substrate and laterally abutting a portion of said conductive structure at sidewalls of said opening, said oxide region having a concave upper surface, wherein said oxide region also extends laterally over an upper surface of a portion of said conductive structure, and is covered by a silicide layer; anda region of planarizing dielectric material, which is not identical to said oxide region, filling said concave upper surface of said oxide region in said opening;wherein the active devices are laterally isolated by said oxide region and said planarizing dielectric material.