Patent ID: 11937416
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 0:
1. A device comprising:
a first transistor that includes a first channel stack having a first number of first channel layers suspended over a substrate, wherein the first channel layers extend along a first lateral direction between first epitaxial source/drain features, the first channel layers have a first channel dimension along a second lateral direction that is different than the first lateral direction, the first epitaxial source/drain features have a first source/drain dimension along the second lateral direction, and the first epitaxial source/drain features have a first volume;
a second transistor that includes a second channel stack having a second number of second channel layers suspended over the substrate, wherein the second channel layers extend along the first lateral direction between second epitaxial source/drain features, the second channel layers have a second channel dimension along the second lateral direction, the second epitaxial source/drain features have a second source/drain dimension along the second lateral direction, and the second epitaxial source/drain features have a second volume; and
wherein the first number of first channel layers is greater than the second number of second channel layers, the first channel dimension is about equal to the second channel dimension, the first source/drain dimension is greater than the second source/drain dimension, and the first volume is greater than the second volume.