Patent ID: 8928039
Filing Date: 2015-01-06
Classification: H01L,H02M

Abstract:
1. A semiconductor device comprising: a first nitride semiconductor layer; a second nitride semiconductor layer provided on the first nitride semiconductor layer and including a non-doped or n-type nitride semiconductor having a band gap wider than that of the first nitride semiconductor layer; a first heterojunction field effect transistor having a first source electrode provided on the second nitride semiconductor layer and forming an electric connection with the second nitride semiconductor layer, a first drain electrode provided on the second nitride semiconductor layer and forming an electric connection with the second nitride semiconductor layer, and a first gate electrode provided between the first source electrode and the first drain electrode; a first Schottky barrier diode having a first anode electrode provided on the second nitride semiconductor layer, forming an electric connection with the second nitride semiconductor layer, and electrically connected to the first drain electrode, and having a first cathode electrode provided on the second nitride semiconductor layer and forming an electric connection with the second nitride semiconductor layer; a first element isolation insulating layer having a first end contacting with the first drain electrode and the first anode electrode, and a second end located in the first nitride semiconductor layer; and a second element isolation insulating layer having a third end contacting with the first cathode electrode, and a fourth end located in the first nitride semiconductor layer.