Patent ID: 11955552
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 15:
16. A semiconductor device structure, comprising:
a first dielectric layer disposed in a first region of the semiconductor device structure, the first dielectric layer having a first surface and a second surface, wherein the second surface is in contact with an interlayer dielectric;
a first source/drain feature disposed in the first region of the semiconductor device structure, wherein the first source/drain feature comprises a first surface, a second surface opposing the first surface, and a sidewall connecting the first surface to the second surface, wherein the first source/drain feature extends a distance into the first surface of the first dielectric layer;
a first semiconductor layer disposed in the first region of the semiconductor device structure and in contact with the first source/drain feature;
a first gate dielectric layer disposed between and in contact with the first dielectric layer and the first semiconductor layer, wherein the first gate dielectric layer and the first semiconductor layer define an interface that is at an elevation different than an elevation of the second surface of the first source/drain feature; and
a first gate electrode layer surrounding a portion of the first semiconductor layer.