Patent ID: 11888054
Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A nitride-based semiconductor device, comprising:
a substrate;
a buffer disposed over the substrate;
a first nitride-based semiconductor layer disposed over the buffer;
a shield layer disposed between the buffer and the first nitride-based semiconductor layer and comprising a first isolation compound that has a bandgap greater than a bandgap of the first nitride-based semiconductor layer, the first isolation compound at least comprising a group III element and oxygen;
a second nitride-based semiconductor layer disposed on the first nitride-based semiconductor layer and having a bandgap less than the bandgap of the first isolation compound and greater than the bandgap of the first nitride-based semiconductor layer; and
a pair of source/drain (S/D) electrodes and a gate electrode disposed over the second nitride-based semiconductor layer, wherein the gate electrode is present between the S/D electrodes, and vertical projections of the S/D electrodes and the gate electrode on the buffer are entirely within a vertical projection of the shield layer on the buffer.