Patent ID: 11961892
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A structure, comprising:
a substrate;
a first fin and a second fin rising above the substrate along a first direction;
an isolation structure spacing the first fin apart from the second fin along a second direction perpendicular to the first direction;
a first source/drain structure disposed over the first fin;
a second source/drain structure disposed over the second fin and merging with the first source/drain structure at a merged portion;
a dielectric layer disposed over the first source/drain structure, the second source/drain structure, and the isolation structure; and
a multi-layer contact structure extending from a top surface of the dielectric layer to contact the first source/drain structure and the second source/drain structure,
wherein the merged portion is spaced apart from the isolation structure by a void disposed between the first source/drain structure and the second source/drain structure along the second direction,
wherein the multi-layer contact structure comprises:
a first contact layer in direct contact with the dielectric layer, and
a second contact layer in direct contact with the first contact layer and spaced apart from the dielectric layer by the first contact layer.