Patent ID: 7217975
Filing Date: 2007-05-15
Classification: H01L

Abstract:
1. A lateral semiconductor device comprising: a semiconductor substrate; a base layer formed on an upper part of the semiconductor substrate; a plurality of emitter regions formed in a circular pattern arranged in a plurality of rows, each row thereof being provided on an upper part in the base layer at an equal interval in a first direction of a surface of the substrate, being arranged with a predetermined pitch for odd number rows in a second direction substantially perpendicular to the first direction, and being arranged with the predetermined pitch for even number rows in the second direction at a position shifted by ½ of the predetermined pitch to the arrangement of the odd number rows; a collector region provided on the upper part of the base layer to surround each of the emitter regions with a predetermined space and to form a concentric circular base layer interposed between the collector region and the emitter regions; an insulating layer provided on the base layer, the emitter regions, and the collector region; an emitter contact formed on the emitter regions through an opening of the insulating layer; a collector contact formed on the collector region through an opening of the insulating layer; and a wiring layer comprising an emitter wiring and a collector wiring on the insulating layer, both the wirings having a predetermined pattern and connecting the emitter contact and the collector contact in parallel respectively.