Patent ID: 9559161
Date: 2017-01-31
CPC Classifications: H01L

Claim:
1. A compound semiconductor device, comprising: a III-nitride buffer; a III-nitride barrier on the III-nitride buffer, the III-nitride barrier having a different band gap than the III-nitride buffer so that a two-dimensional charge carrier gas channel arises along an interface between the III-nitride buffer and the III-nitride barrier; a source and a drain spaced apart from one another and electrically connected to the two-dimensional charge carrier gas channel; a gate for controlling the two-dimensional charge carrier gas channel between the source and the drain; a patterned III-nitride back-barrier buried in the III-nitride buffer, the patterned III-nitride back-barrier extending laterally beyond the gate towards the drain and terminating prior to the drain so that the patterned III-nitride back-barrier is laterally spaced apart from the drain by a region of the III-nitride buffer; and a field plate disposed above and electrically insulated from the gate, the field plate being electrically connected to the source or the gate and extending laterally beyond the gate towards the drain, wherein the patterned III-nitride back-barrier extends laterally beyond the field plate towards the drain.