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

Claim 3:
4. An electrical device comprising:
a substrate;
a fragile material supported by the substrate, the fragile material having a KIC fracture toughness from 0.05 MPa·m1/2 to 1.0 MPa·m1/2; and
(i) a stress buffer layer supported by the substrate and configured to minimize strain at an interface of the fragile material; and/or (ii) a stress compensation layer supported by the substrate and configured to counteract forces imparted to the fragile material;
wherein a coefficient of thermal expansion (CTE) of the stress buffer layer and/or a CTE of the stress compensation layer are within a range from zero to 2.0×10−6/K of a CTE of the fragile material.