Patent ID: 11901361
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor structure comprising:
a first field effect transistor (PET) device comprising:
a fin structure;
a first work function metal layer over the fin structure; and
a high-k gate dielectric layer between the first work function metal layer and the fin structure;

a second PET device comprising:
a plurality of nanosheets separated from each other;
a second work function metal layer surrounding each of the nanosheets;
a third work function metal layer surrounding the second work function metal layer; and
the high-k gate dielectric layer between the second work function metal layer and each of the nanosheets; and

an isolation separating the first PET device and the second PET device,
wherein a portion of the high-k gate dielectric layer is directly over the isolation,
wherein the second work function metal layer is an n-type work function metal layer, and
the third work function metal layer is a p-type work function metal layer.