Patent ID: 8946724
Filing Date: 2015-02-03
Classification: H01L

Abstract:
1. A HEMT and Schottky diode integrated circuit device comprising: a. a common substrate for said HEMT and Schottky diode; b. a 2DEG channel layer disposed over said common substrate under said HEMT and adjacent an anode of said Schottky diode; c. a low resistance layer disposed over said common substrate, the low resistance layer having openings therein under said HEMT and under said Schottky diode, the opening therein under said HEMT having sidewalls which immediately abut sidewalls of said 2DEG channel layer disposed on said common substrate under said HEMT and the opening therein under said Schottky diode having sidewalls which immediately abut sidewalls of said 2DEG channel layer disposed on said common substrate in said opening under said Schottky diode, the 2DEG channel layer disposed on said common substrate in said opening under said Schottky diode having further sidewalls which abut said anode; d. a top barrier layer disposed over said low resistance layer; e. a T-shaped gate, the T-shaped gate having a leg disposed over said top barrier layer and over the 2DEG channel layer disposed on said common substrate under said HEMT; f. drain and source electrodes disposed on said low resistance layer and spaced from said T-shaped gate; and g. one or more cathode electrodes disposed on said low resistance layer and spaced from said anode.