Patent ID: 11948927
Assignee: STMICROELECTRONICS S.R.L.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A device, comprising:
a heat dissipater;
a first substrate on the first dissipater;
a first semiconductor layer on the substrate;
a first dielectric layer on the first semiconductor layer;
a plurality of thermally insulating trenches that extend in the first semiconductor layer and in the first substrate, the plurality of thermally insulating trenches being around a central region;
a gallium nitride device in the first dielectric layer, the gallium nitride device including:
a second substrate on the first dielectric layer;
a first gallium nitride layer on the second substrate; and
a second gallium nitride layer on the first gallium nitride layer.