Patent ID: 11888051
Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A structure comprising:
a high-electron-mobility transistor including a substrate having an upper surface that faces upwards in a first direction perpendicular to the upper surface, a first semiconductor layer, a second semiconductor layer adjoining the first semiconductor layer along an interface, a first trench and a second trench that are adjacently located in the first semiconductor layer and the second semiconductor layer, a gate window in the first semiconductor layer, a gate electrode located in the first trench, the second trench, and the gate window, a first insulator region in the first semiconductor layer and the second semiconductor layer, a second insulator region in the first semiconductor layer and the second semiconductor layer, and a source/drain region, the gate window connecting the first trench to the second trench, the first semiconductor layer comprising a first compound semiconductor material, the second semiconductor layer comprising a second compound semiconductor material different in composition from the first compound semiconductor material, the first insulator region and the second insulator region extending through the interface, the first insulator region laterally positioned between an end of the first trench and the source/drain region, and the second insulator region laterally positioned between an end of the second trench and the source/drain region, and
wherein a portion of the first insulator region extends below a lowest extent of a first bottom-most surface of the first trench in the first direction, and a portion of the second insulator region extends below a lowest extent of a second bottom-most surface of the second trench in the first direction.