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

Claim 0:
1. A device, comprising:
a substrate including a semiconductor material;
a first gate structure in an n-type region of the substrate; and
a second gate structure in a p-type region of the substrate;
wherein:
the first gate structure includes a p-type work function layer deposited over an n-type work function layer, wherein the p-type work function layer includes both ruthenium oxide and unoxidized ruthenium;
the second gate structure includes the p-type work function layer deposited over the substrate;
the n-type work function layer includes Ti, Al, Ag, Mn, Zr, TiAl, TiAlC, TaC, TaCN, TaSiN, TaAl, TaAlC, or TiAlN.