Patent ID: 11935794
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of forming a semiconductor transistor device, the method comprising:
forming a channel structure over a substrate;
forming a sacrificial source/drain contact in the substrate on one side of the channel structure;
forming a first source/drain structure and a second source/drain structure on opposite sides of the channel structure, the first source/drain structure overlying the sacrificial source/drain contact;
forming a gate structure surrounding the channel structure;
forming a back-side capping trench to expose a bottom surface of the gate structure and a bottom surface of the second source/drain structure, wherein the bottom surface of the second source/drain structure is recessed; and
forming a back-side dielectric cap in the back-side capping trench.