Patent ID: 6713794
Filing Date: 2004-03-30
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor base of a first conductivity type having a major surface; a first semiconductor region of a second conductivity type formed in the semiconductor base; a second semiconductor region of the second conductivity type formed in the semiconductor base, the second semiconductor region separate from the first semiconductor region; a third semiconductor region of the first conductivity type formed in the first semiconductor region; a first main electrode which is formed on the major surface of the semiconductor base and electrically connected to the first and third semiconductor regions; a second main electrode which is formed on the major surface of said semiconductor base and electrically connected to the second semiconductor region; an insulating film formed on the major surface of the semiconductor base; a gate electrode formed on said insulating film at least on the major surface of the semiconductor base and the first semiconductor region between the semiconductor base and the third semiconductor region; and a fourth semiconductor region of the second conductivity type formed in the semiconductor base between the first and second semiconductor regions below an end region of the gate electrode, wherein the semiconductor device includes a lateral insulated-gate bipolar transistor having the semiconductor base as a base, the second semiconductor region as a collector, and the third semiconductor region as an emitter.