Patent ID: 6083831
Filing Date: 2000-07-04
Classification: H01L

Abstract:
A semiconductor processing method of forming a contact pedestal comprising the following steps:providing a node location to which electrical connection is to be made;providing insulating dielectric material over the node location;etching a contact opening into the insulating dielectric material over the node location to a degree insufficient to outwardly expose the node location, the contact opening having a base;providing a spacer layer over the insulating dielectric material to within the contact opening to a thickness which less than completely fills the contact opening;anisotropically etching the spacer layer to form a sidewall spacer within the contact opening;after forming the sidewall spacer, etching through the contact opening base to outwardly expose the node location;filling the contact opening to the node location with electrically conductive material;rendering the sidewall spacer electrically conductive; andetching the electrically conductive material to form an electrically conductive contact pedestal comprising the sidewall spacer, the pedestal having an outer surface which is substantially coplanar with opposing laterally adjacent electrically insulative surfaces.