Patent ID: 11949015
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method comprising:
forming a semiconductor fin extending from a substrate;
forming gate structures extending across the semiconductor fin;
forming a recess in the semiconductor fin and laterally between the gate structures;
forming an epitaxial bar in the recess, wherein when viewed in a first cross-sectional view taken along a longitudinal direction of the semiconductor fin, the epitaxial bar has a v-notched profile on a top surface of the epitaxial bar, and when viewed in a second cross-sectional view taken along a longitudinal direction of the gate structures, the epitaxial bar has a linear profile on the top surface of the epitaxial bar; and
forming an epitaxial layer wrapping around the epitaxial bar.