Patent ID: 8319309
Filing Date: 2012-11-27
Classification: H01L

Abstract:
1. A semiconductor device comprising: a base substrate; a semiconductor layer which is disposed on the base substrate and has a 2-Dimensional Electron Gas (2DEG) formed therewithin, the semiconductor layer comprising a first nitride film on the base substrate, the first nitride film being formed of P-type having high resistivity, thereby reducing a leakage current of the semiconductor device, and a second nitride film which is disposed on the first nitride film and has an energy band gap wider than that of the first nitride film; a first ohmic electrode disposed on a central region of the semiconductor layer; a second ohmic electrode which is formed on the edge regions of the semiconductor layer in such a manner to be disposed to be spaced apart from the first ohmic electrodes, and have a ring shape surrounding the first ohmic electrode; and a Schottky electrode part which is formed on the central region to cover the first ohmic electrode and is formed to be spaced apart from the second ohmic electrode.