Patent ID: 11948800
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A device, comprising:
a substrate;
gate spacers over the substrate;
a gate structure disposed between the gate spacers, wherein the gate structure comprises:
an interfacial layer over the substrate;
a tungsten-containing layer over the interfacial layer, wherein from a cross-sectional view, the tungsten-containing layer has a U-shaped pattern comprising a horizontal portion and two non-horizontal portions extending upwards from opposing ends of the horizontal portion along the gate spacers; and
a metal compound layer over the tungsten-containing layer, wherein from the cross-sectional view, the metal compound layer has a U-shaped pattern comprising a horizontal portion extending along the horizontal portion of the tungsten-containing layer, and two non-horizontal portions extending along the non-horizontal portions of the tungsten-containing layer.