Patent ID: 11901456
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor structure, comprising:
a power rail on a back side of the semiconductor structure;
a first interconnect structure on a front side of the semiconductor structure;
a source feature, a drain feature, a first semiconductor fin, and a gate structure that are between the power rail and the first interconnect structure, wherein the first semiconductor fin connects the source feature and the drain feature, and the gate structure is disposed on a front surface and two side surfaces of the first semiconductor fin;
an isolation structure disposed between the power rail and the drain feature and between the power rail and the first semiconductor fin;
a via penetrating through the isolation structure and connecting the source feature to the power rail; and
a first dielectric fin and a second dielectric fin that are lengthwise parallel to the first semiconductor fin and extend from the back side of the semiconductor structure towards the front side of the semiconductor structure, wherein the first semiconductor fin is disposed between the first and the second dielectric fins.