Patent ID: 11935921
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 device fin and a second device fin over the substrate, wherein the first device fin has a first sidewall and a second sidewall opposite to the first sidewall, and the second device fin has a third sidewall and a fourth sidewall opposite to the third sidewalk;
a first dielectric fin over the substrate, wherein a topmost surface of the first dielectric fin is separated from a surface of the substrate by a first distance;
a second dielectric fin over the substrate, wherein the second dielectric fin has a fifth sidewall and a sixth sidewall opposite to the fifth sidewall;
a first gate segment located on the first sidewall and the second sidewall of the first device fin and adjacent to the first dielectric fin, wherein the second device fin and the second dielectric fin are spaced apart from the first gate segment; and
a second gate segment located on the fifth sidewall and the sixth sidewall of the second dielectric fin and located on the third sidewall and the fourth sidewall of the second device fin, wherein the second gate segment is electrically isolated from the first gate segment, the second dielectric fin has a portion directly under the second gate segment, a topmost surface of the portion of the second dielectric fin is separated from the surface of the substrate by a second distance, and the first distance is greater than the second distance.