Patent ID: 11915981
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device, comprising:
a substrate;
a first gate structure over the substrate, wherein the first gate structure comprises:
a first gate dielectric; and
a first work function metal layer over the first gate dielectric;

a second gate structure over the substrate, the second gate structure being wider than the first gate structure, wherein the second gate structure comprises:
a second gate dielectric;
a second work function metal layer over the second gate dielectric; and
a filling conductor over the second work function metal layer;

first gate spacers on opposite sidewalls of the first gate structure;
second gate spacers on opposite sidewalls of the second gate structure;
first and second metal layers spanning over the first and second gate structures, respectively; and
first and second contact plugs extending through the first and second metal layers, respectively, wherein the first contact plug is in contact with the first work function metal layer, and the second contact plug is in contact with the filling conductor.