Patent ID: 11948839
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A structure, comprising:
a substrate;
a first semiconductor fin and a second semiconductor fin on the substrate, the second semiconductor fin being taller than the first semiconductor fin;
a first insulating fin on the substrate disposed between the first semiconductor fin and the second semiconductor fin, the first insulating fin having a first height;
a second insulating fin on the substrate, disposed adjacent to the first semiconductor fin, the first semiconductor fin positioned between the first and the second insulating fins, the second insulating fin having a second height;
a third insulating fin on the substrate, adjacent to the second semiconductor fin, wherein the second semiconductor fin is positioned between the first and the third insulating fins, the third insulating fin having a third height,
wherein the first, second, and third heights are substantially equal;
a first epitaxial stack on a portion of the first semiconductor fin;
a second epitaxial stack on a portion of the second semiconductor fin, the second epitaxial stack being taller than the first epitaxial stack; and
a dielectric layer on the substrate, the dielectric layer covering a bottom portion of the first and second semiconductor fins and a bottom portion of the first, second, and third insulating fins.