Patent ID: 11948906
Assignee: INTEL CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An integrated circuit (IC) die structure, comprising:
a substrate material comprising silicon;
integrated circuitry over a first side of the substrate material; and
a composite layer in direct contact with a second side of the substrate material, opposite the first side, wherein the composite layer comprises:
a first constituent material associated with a first linear coefficient of thermal expansion (CTE), and a first thermal conductivity exceeding that of the substrate material; and
a second constituent material associated with a second CTE that is lower than the first CTE by at least 5 ppm/K, and a second thermal conductivity exceeding that of the substrate material, wherein the first constituent material has a higher ductility than the second constituent material, and wherein the first constituent material is a metal and the second constituent material is a non-metal.