Patent ID: 11929398
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A FinFET structure, comprising:
a substrate;
an insulation layer over the substrate, wherein a first portion of the insulating layer comprises a first dopant concentration of a dopant;
a fin partially doped with the dopant, protruding from the substrate and penetrating the insulation layer, wherein a first region of the fin has a highest dopant concentration of the dopant among the entire fin, a position of the first region of the fin is at a level below a top surface of the insulation layer and above a bottom surface of the insulation layer, and a second region of the fin comprises a second dopant concentration of the dopant less than a third dopant concentration of the first region of the fin;
a gate over the fin; and
a high-k dielectric layer between the second region of the fin and the gate.