Patent ID: 11862519
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 12:
13. A method for manufacturing an integrated circuit device, the method comprising:
forming a first semiconductor fin over a semiconductor substrate, wherein the first semiconductor fin has opposite first and second sidewalls;
depositing a sidewall spacer layer over the first and second sidewalls of the first semiconductor fin;
patterning the sidewall spacer layer to expose the second sidewall of the first semiconductor fin, wherein the first sidewall of the first semiconductor fin is covered by the patterned sidewall spacer layer, and an entirety of the second sidewall of the first semiconductor fin is free from coverage by the patterned sidewall spacer layer;
recessing the first semiconductor fin; and
forming a first epitaxial feature on the recessed first semiconductor fin.