Patent ID: 11955472
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A structure comprising:
a hybrid semiconductor substrate comprising bulk semiconductor and semiconductor-on-insulator regions; and
a semiconductor-controlled rectifier on the hybrid semiconductor substrate and comprising:
in a first bulk semiconductor region, a first Pwell and a first Nwell positioned laterally adjacent to the first Pwell, wherein the first Pwell and the first Nwell are electrically connected to a cathode terminal;
in a second bulk semiconductor region, a second Nwell electrically connected to an anode terminal; and
in a semiconductor-on-insulator region positioned laterally between the first bulk semiconductor region and the second bulk semiconductor region, a second Pwell positioned laterally between and abutting the first Nwell and the second Nwell, an insulator layer on the second Pwell, and a semiconductor layer on the insulator layer positioned laterally between and abutting trench isolation regions,

wherein the insulator layer and the semiconductor layer form a gate structure on the second Pwell, and
wherein the gate structure is electrically connected to the anode terminal.