Patent ID: 11901428
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 18:
19. The method of claim 18, further comprising, after the selectively removing of the second semiconductor layers, removing the recessed portion of the second high-k dielectric layer, and
wherein the forming of the gate cut feature includes:
removing the isolation feature thereby exposing sidewalls of the backside dielectric layer;
removing the first low-k dielectric layer to form a gate cut opening, the gate cut opening exposes a portion of the gate dielectric layer;
recessing the exposed portion of the gate dielectric layer thereby exposing a portion of the gate electrode layer;
laterally and vertically recessing the gate electrode layer to expand and extend the gate cut opening, the gate cut opening extending through the gate cap; and
forming a second low-k dielectric layer in the extended gate cut opening.