Patent ID: 11943845
Assignee: WATLOW ELECTRIC MANUFACTURING COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  B | IPC B  C  H

Claim 13:
14. A heater comprising:
an aluminum nitride (AlN) substrate comprising a plurality of plate members; and
a heating layer disposed in the AlN substrate, wherein the plurality of plate members are bonded together via transient liquid phase bonding between the plurality of plate members;
a routing layer, wherein the routing layer extends radially between a central portion of the AlN substrate and an outer portion of the AlN substrate, and wherein the routing layer is disposed within the AlN substrate;
a plurality of first conductive vias connecting the heating layer to the routing layer, wherein at least one of the routing layer and the plurality of first conductive vias are bonded to the AlN substrate via transient liquid phase bonding; and
a plurality of second conductive vias connecting the routing layer to at least one terminal wire.