Patent ID: 11923357
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. An interfacial structure, comprising:
a first structure, comprising:
a first dielectric layer;
a first conductive feature disposed in the first dielectric layer, wherein a top surface of the first dielectric layer and a top surface of the first conductive feature are substantially coplanar;
a first cap layer disposed on the first conductive feature, wherein the first conductive feature is different from the first cap layer; and
a first thermal conductive layer disposed on the first dielectric layer, wherein a maximum thickness of the first cap layer is substantially the same as a maximum thickness of the first thermal conductive layer; and

a second structure disposed on the first structure, wherein the second structure comprises:
a second thermal conductive layer disposed on the first thermal conductive layer, wherein the first thermal conductive layer and the second thermal conductive layer are two distinct layers;
a second dielectric layer disposed on the second thermal conductive layer;
a second conductive feature disposed in the second dielectric layer, wherein a bottom surface of the second dielectric layer and a bottom surface of the second conductive feature are substantially coplanar; and
a second cap layer disposed between the second conductive feature and the first cap layer, wherein the first cap layer and the second cap layer are two distinct layers, and the second conductive feature is different from the second cap layer.