Patent ID: 9337180
Filing Date: 2016-05-10
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a MOSFET formed in a first region of a semiconductor layer; and a diode formed in a second region of the semiconductor layer, wherein the MOSFET includes: a first electrode formed via a first insulating film over the semiconductor layer; and source and drain regions of a first conductivity type formed in the semiconductor layer of the first region on both sides of the first electrode, the diode includes: a first semiconductor region of the first conductivity type formed in the semiconductor layer of the second region; a second semiconductor region of a second conductivity type that is opposite to the first conductivity type, the second semiconductor region being formed so as to have a PN junction with the first semiconductor region in the semiconductor layer of the second region; and a third semiconductor region of the first conductivity type formed so as to be connected to the first semiconductor region in the semiconductor layer of the second region, the second semiconductor region is formed so as to be connected to the semiconductor layer below the first electrode, and the first electrode extends onto the third semiconductor region and is connected to the first semiconductor region via the third semiconductor region.