Patent ID: 11935921
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A semiconductor device, comprising:
a substrate;
a first dielectric fin over the substrate, wherein a topmost surface of the first dielectric fin is positioned at a first height level with respect to a bottom surface of the substrate;
a first semiconductor fin over the substrate;
a first gate stack segment covering a first sidewall of the first dielectric fin and first opposite sidewalls of the first semiconductor fin;
a second dielectric fin over the substrate;
a second semiconductor fin over the substrate; and
a second gate stack segment covering a second sidewall of the second dielectric fin and second opposite sidewalls of the second semiconductor fin, wherein the second dielectric fin has a portion directly under the second gate stack segment, a topmost surface of the portion of the second dielectric fin is positioned at a second height level with respect to the bottom surface of the substrate, and the first height level is higher than the second height level.