Patent ID: 8884332
Filing Date: 2014-11-11
Classification: H01L

Abstract:
1. A nitride semiconductor device comprising: a semiconductor substrate; and a nitride semiconductor layer disposed on the semiconductor substrate, wherein the semiconductor substrate includes a normal region, a carrier supplying region, and an interface current blocking region, the nitride semiconductor layer includes a device region and a device isolation region surrounding the device region, the interface current blocking region surrounds the normal region and the carrier supplying region, the interface current blocking region and the carrier supplying region include impurities, at least a part of the device region is disposed above the normal region, the carrier supplying region has a conductivity type allowing the carrier supplying region to serve as a source of carriers supplied to or a destination of carriers supplied from a carrier layer generated at an interface between the nitride semiconductor layer and the semiconductor substrate depending on an electric field applied therebetween, and the interface current blocking region has a conductivity type allowing the interface current blocking region to serve as a potential barrier to the carriers.