Patent ID: 11869892
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device structure, comprising:
a first P-type metal oxide semiconductor field effect transistor (p-MOSFET) having a first fin extending along a first direction and comprising a first semiconductor layer, wherein the first fin comprises:
a first recess formed in a top of the first fin, the first recess having a bottom surface and a sidewall surface extending upwardly from the bottom surface;

a first gate structure disposed in the first recess and in contact with the bottom surface and the sidewall surface, the first gate structure extending along a second direction substantially perpendicular to the first direction, wherein the first pate structure and the bottom of the first recess define a first interface, and the first spacer and the first fin define a second interface;
a first spacer disposed on opposite sidewalls of the first gate structure and in contact with the first fin and the first gate structure:
a first source/drain epitaxial feature disposed in contact with the first semiconductor layer, wherein the first source/drain epitaxial feature has a top surface, and the second interface is at a level lower than the top surface of the first source/drain epitaxial feature.