Patent ID: 11948999
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A device, comprising:
a first isolation structure over a substrate and having a first depth;
a second isolation structure over the substrate and having a second depth shallower than the first depth;
a first semiconductor fin over the substrate and between the first isolation structure and the second isolation structure;
a second semiconductor fin over the substrate, wherein the second isolation structure is between the first semiconductor fin and the second semiconductor fin; and
a source/drain epitaxial structure connected to the first semiconductor fin and the second semiconductor fin, wherein a bottom surface of the source/drain epitaxial structure is lower than a bottom surface of the second isolation structure, and a top surface of the source/drain epitaxial structure has concave portions;
an epitaxial capping layer over the source/drain epitaxial structure; and
a contact over and in contact with the source/drain epitaxial structure and the epitaxial capping layer, wherein the contact forms a V-shape interface with the epitaxial capping layer.