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

Claim 12:
13. The structure of claim 9, further comprising an insulator layer adjacent to the opposing sidewalls of and extending between the semiconductor fins,
wherein, in each semiconductor fin, a bottom of the base recess and bottoms of the collector and emitter recesses are above a level of a top surface of the insulator layer,
wherein the base semiconductor layers extend along the opposing sides of the semiconductor fins to the top surface of the insulator layer, and
wherein the additional base semiconductor layer wraps over each of the base semiconductor layers to the insulator layer and fills remaining space with a base opening that extends through interlayer dielectric material to each semiconductor fin and that has vertical surfaces lined with sidewall spacers.