Patent ID: 11908909
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A semiconductor device, comprising:
an active region;
an epitaxial source/drain within and extending above the active region;
a first metal gate residing on at least a portion of the active region;
an insulation layer adjacent to the active region;
a plurality of dielectric layers that each reside above the insulation layer;
a first layer stack residing on the first metal gate and in the plurality of dielectric layers; and
a second layer stack, residing directly above and intersecting with the epitaxial source/drain, and residing in the plurality of dielectric layers,
wherein each of the first layer stack and the second layer stack comprises:
a material layer residing on a bottom of each of first layer stack and the second layer stack and on a portion of sides of each of the first layer stack and the second layer stack,
a titanium layer and a metal layer residing on the material layer, and
a metal layer residing on the titanium layer and the metal layer.