Patent ID: 6184584
Filing Date: 2001-02-06
Classification: H01L

Abstract:
A miniaturized contact in a semiconductor substrate, comprising:a diffused layer formed at a surface of said semiconductor substrate;an interlayer film for covering said diffused layer;a plurality of lower interconnections buried within said interlayer film;an upper interconnection disposed on said interlayer film;a contact hole passing through said interlayer film for connecting said diffused layer with said upper interconnection, said contact hole having an aperture diameter equivalent to a space interval between said lower interconnections;a first buried conductor disposed within said contact hole only from the bottom to a height lower than that of said lower interconnections;a side-wall insulator disposed on a side-wall of said contact hole above said first buried conductor; anda second buried conductor disposed on said first buried conductor within said contact hole up to a height sufficient to contact with said upper interconnection.