Patent ID: 11894477
Assignee: RAYTHEON COMPANY
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An electrical device comprising:
a substrate;
an aluminum nitride (AlNx) buffer layer overlying at least a portion of the substrate; and
at least one other layer overlying at least a portion of the aluminum nitride (AlNx) buffer layer;
wherein:
the at least one other layer includes:
an aluminum nitride (AlNx) tensile stress layer; and
a compressive stress layer;

the aluminum nitride tensile stress layer is configured to counteract forces imparted by at least the compressive stress layer to control an amount of bow of the substrate and minimize interfacial strain in the device; and
the aluminum nitride buffer layer has an intrinsic stress value that is closer to zero than each of the compressive stress layer and the aluminum nitride tensile stress layer.