Patent ID: 11948973
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 16:
17. A semiconductor device comprising:
a semiconductor strip protruding above a substrate;
a first isolation region and a second isolation region on opposing sides of the semiconductor strip;
nanowires over and aligned with the semiconductor strip;
a first dielectric fin and a second dielectric fin on the first isolation region and the second isolation region, respectively, wherein the first dielectric fin and the second dielectric fin extend parallel to the semiconductor strip;
a dielectric structure on an upper surface of the second dielectric fin distal from the substrate, wherein no dielectric structure is on an upper surface of the first dielectric fin distal from the substrate; and
a gate structure around the nanowires, over the first dielectric fin, and over the second dielectric fin, wherein the dielectric structure extends further from the substrate than the gate structure.