Patent ID: 6414370
Filing Date: 2002-07-02
Classification: H01L,H03K

Abstract:
A semiconductor device comprising:a first semiconductor layer of a first conductivity type; a semiconductor layer of a second conductivity type provided on said first semiconductor layer; a third semiconductor layer of the first conductivity type adjacent to said second semiconductor layer; a fourth semiconductor layer of the second conductivity adjacent to said first semiconductor layer; a fifth semiconductor layer of the first conductivity type adjacent to said first and fourth semiconductor layers; a first main electrode in ohmic contact with said second and third semiconductor layers; a second main electrode in ohmic contact with said fourth and fifth semiconductor layers; and an insulated-gate electrode extending over said first, second and third semiconductor layers, wherein a junction between said first and fourth semiconductor layers exists at a location closer to a junction between said first and second semiconductor layers than a junction between said first and fifth semiconductor layers does.