Patent ID: 11894448
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A device comprising:
a first protrusion and a second protrusion disposed on a substrate;
a first source/drain feature including a first dopant disposed in the first protrusion;
a second source/drain feature including a second dopant disposed in the first protrusion, the substrate and the second protrusion, the second dopant being different than the first dopant, wherein the second source/drain feature is spaced apart from the first source/drain feature in the first protrusion;
a gate dielectric disposed along a sidewall of the first protrusion;
a gate electrode disposed on the gate dielectric along the sidewall of the first protrusion;
a pickup feature disposed in a top portion of the second protrusion, the pickup feature includes the second dopant at a greater concentration than the second source/drain feature.