Patent ID: 11888049
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 17:
18. A semiconductor structure, comprising:
a first plurality of nanostructures;
a first gate segment wrapping around each of the first plurality of nanostructures;
a second plurality of nanostructures;
a second gate segment wrapping around each of the second plurality of nanostructures; and
a dielectric fin sandwiched between the first gate segment and the second gate segment,
wherein top surfaces of the first gate segment, the second gate segment and the dielectric fin are coplanar,
wherein the dielectric fin comprises a base feature and a helmet feature over the base feature,
wherein a composition of the dielectric fin is different a composition of the helmet feature,
wherein the helmet feature comprises a bottom width and a top width greater than the bottom width such that the helmet feature comprises a tapered profile.