Patent ID: 11901241
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A device, comprising:
an n-type transistor that includes:
a gate dielectric layer, a material layer disposed over the gate dielectric layer, an n-type work function layer disposed over and in physical contact with the material layer, a protective layer disposed over and in physical contact with the n-type work function layer, and a p-type work function layer disposed over and in physical contact with the protective layer; and

a p-type transistor that includes:
the gate dielectric layer, the material layer disposed over the gate dielectric layer, and the p-type work function layer disposed over and in physical contact with the material layer; and
wherein the p-type work function layer includes a metal oxide material.