Patent ID: 6043553
Filing Date: 2000-03-28
Classification: H01L

Abstract:
A semiconductor device including a bipolar transistor of a self-align type having a multi-emitter structure, the bipolar transistor comprising;a collector region of a first conductive type formed on a semiconductor substrate,at least one collector leading region formed in the collector region, more than one emitter/base formation regions formed on the collector region,an element isolation film formed on the collector region having openings on said at least one collector leading region and said more than one emitter/base formation regions,base regions of a second conductive type each formed in a surface region of the collector region in respective one of said more than one emitter/base formation regions,at least one base leading electrode formed on the element-isolation film, extending on each of said more than one emitter/base formation regions to contact with a periphery of respective one of the base regions and having an opening on a center part of respective one of said more than one emitter/base formation regions,emitter diffusion layers each formed on a center surface of respective one of the base regions,emitter leading electrodes each formed on a surface of respective one of the emitter diffusion layers to be in contact with the surface and isolated from said at least one base leading electrode,an inter-layer insulation film covering the element-isolation film, said at least one collector leading region, said at least one base leading electrode and the emitter leading electrodes, and having contact holes each penetrating through the inter-layer insulation film and being provided on respective one of said at least one collector leading region, said at least one base leading electrode and the emitter leading electrodes, andwirings each extending on the inter-layer insulation film and connected to respective one of said at least one collector leading region, said at least one base leading electrode and the emitter leading electrodes by way of respective one of the contact holes;wherein:said more than one emitter/base formation regions and said at least one collector leading region are arranged in a single array;each of said at least one base leading electrode is extending outside of the single array to be connected to respective one of the wirings by way of respective one of the contact holes formed outside the single array.