Patent ID: 11950424
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A semiconductor device, comprising:
a substrate;
a first gate electrode disposed on the substrate; and
a first sidewall structure covers a lateral surface of the first gate electrode, wherein the first sidewall structure has a first dielectric layer in contact with the first gate electrode, a second dielectric layer spaced apart from the first gate electrode by the first dielectric layer, and a third dielectric layer spaced apart from the first dielectric layer by the second dielectric layer, and wherein a height of a top surface of the first dielectric layer with respect to the substrate is greater than a height of a top surface of the third dielectric layer with respect to the substrate;
a second gate electrode disposed on the substrate; and
a second sidewall structure covers a lateral surface of the second gate electrode, wherein a first width of the first sidewall structure is different from a second width of the second sidewall structure along a first direction.