Patent ID: 6087708
Filing Date: 2000-07-11
Classification: H01L

Abstract:
A semiconductor integrated circuit device having a bipolar transistor comprising:a semiconductor layer having a first surface;a base region having a second surface disposed within said first surface of said semiconductor layer and a third surface opposite to said second surface;an emitter region diffused into said third surface of said base region, said emitter having a first and second side when viewed as a cross-section perpendicular to said semiconductor integrated circuit device;said base region including,an active base region surrounding said emitter region, andan external base region integral with and surrounding said active base region;a first silicon film disposed over said base region and connected to said external base region, a first portion of said first silicon film being positioned on said first side of said emitter region, and a second portion of said first silicon film being positioned on said second side of said emitter region, and said second portion disposed only on said external base region such that said second portion does not extend beyond said external base region in a horizontal direction going from said first side to said second side;a first silicide film disposed on said first silicon film;a base electrode connected to said first silicide film so that said base electrode and said external base region are connected by said first silicon film and said first silicide film;a second silicon film disposed over said emitter region and connected to said emitter region;a second silicide film disposed on said second silicon film;an emitter electrode connected to said second silicide film so that said emitter electrode and said emitter region are connected by said second silicon film and said second silicide film; andan element separation region disposed at a peripheral end of said semiconductor layer, said first portion of said first silicon film extending over said element separation region.