Patent ID: 11967637
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A structure comprising:
multiple semiconductor fins, wherein each semiconductor fin has opposing sidewalls, a first width, collector and emitter recesses, and a base recess positioned laterally between and separated from the collector and emitter recesses, wherein the base recess extends across the first width through the opposing sidewalls;
a base region comprising:
base semiconductor layers, wherein each base semiconductor layer is on a corresponding semiconductor fin at least in the base recess, wherein the base semiconductor layer has a second width that is wider than the first width such that the base semiconductor layer extends laterally beyond the opposing sidewalls of the corresponding semiconductor fin; and
an additional base semiconductor layer on the base semiconductor layers; and

collector and emitter regions in the collector and emitter recesses, respectively, wherein top surfaces of the collector and emitter regions are above a level of top surfaces of the base semiconductor layers.