Patent ID: 6611043
Filing Date: 2003-08-26
Classification: H01L

Abstract:
A semiconductor device comprising a plurality of bipolar transistors arrayed in a square matrix formation where the number of said bipolar transistors arrayed in a vertical direction is equal to the number of said bipolar transistors arrayed in a horizontal direction, each of said bipolar transistors comprising:a collector region of a first conductivity type; a base region of a second conductivity type formed on said collector region and having a square shape as seen in plan view; an emitter region of the first conductivity type formed in a center on a surface of said base region and having a square shape as seen in plan view; at least one emitter electrode connected to said emitter region, at least one base electrode connected to said base region and provided in such as way as to surround said at least one emitter electrode; and a collector electrode connected to said collector region and provided in such a way as to surround said at least one base electrode, said collector regions of all of said bipolar transistors being formed of a single semiconductor layer.