Patent ID: 11955515
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 10:
11. A semiconductor device, comprising:
a substrate;
first and second source/drain (S/D) regions disposed on the substrate;
first and second contact structures disposed on front-sides of the first and second S/D regions, respectively;
a third contact structure, comprising:
a first silicide layer disposed on a back-side of the first S/D region,
a first metal layer disposed on the first silicide layer,
a second metal layer disposed on the first metal layer, and
a first contact plug disposed on the second metal layer, and

a fourth contact structure, comprising:
a second silicide layer disposed on a back-side of the second S/D region,
a third metal layer disposed on the second silicide layer, and
a second contact plug disposed on the third metal layer.