Patent ID: 11955484
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device, comprising:
a semiconductor substrate having a first region and a second region, wherein the first region comprises a first semiconductor fin and the second region comprises a second semiconductor fin, a width of a middle portion of the first semiconductor fin is equal to widths of end portions of the first semiconductor fin, a width of a middle portion of the second semiconductor fin is different from widths of end portions of the second semiconductor fin, a dopant of the first semiconductor fin and the second semiconductor fin comprises boron, BF2, phosphorus, arsenic, or a combination thereof, a dopant concentration within the first semiconductor fin ranges from 2×1011 atom/cm2 to 1×1012 atom/cm2 and a dopant concentration within the first semiconductor fin is less than the dopant concentration within the second semiconductor fin;
a plurality of gate stacks over a portion of the first semiconductor fin and a portion of the second semiconductor fin;
a first S/D covering another portion of the first semiconductor fin; and
a second S/D covering another portion of the second semiconductor fin.