Patent ID: 11942377
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device, comprising:
a semiconductor substrate;
a plurality of channel regions, including a p-type channel region, an n-type channel region, and a third channel region disposed over the semiconductor substrate; and
a gate structure comprising:
a gate dielectric layer disposed over the plurality of channel regions;
a work function metal (WFM) structure disposed over the gate dielectric layer, wherein the WFM structure includes an n-type WFM layer over the n-type channel region and not over the p-type channel region or the third channel region and further includes a p-type WFM layer over both the n-type WFM layer and the p-type channel region and not the third channel region; and
a fill metal layer.