Patent ID: 11894468
Assignee: CORNELL UNIVERSITY
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. The group III trioxide semiconductor device of claim 1 wherein, over another predetermined distance from the vertical edge surface of the group III trioxide semiconductor device, said another predetermined distance being longer that the predetermined distance from the vertical edge surface and shorter than a distance from the vertical edge surface to a closest upstanding channel, the dielectric layer over the distal surface is thicker than the dielectric layer over a rest of the distal surface, or over the dielectric layer over the sidewalls of each upstanding channel; and, wherein the third electrically conductive layer is disposed over a portion of the dielectric layer that is thicker than the dielectric layer over the rest of the first distal surface; the third electrically conductive layer is disposed over a portion of the dielectric layer; the portion of the dielectric layer that is thicker than the dielectric layer over the rest of the first distal surface causes a stepped overhang to be formed in the third electrically conductive layer; the stepped overhang providing a double field-plate edge termination; the third electrically conductive layer being disposed the predetermined distance away from the vertical edge surface of the group III trioxide semiconductor device.