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

Claim 15:
16. An integrated circuit (IC) die structure, comprising:
an IC die comprising a monocrystalline material layer comprising silicon, integrated circuitry over a first side of the monocrystalline material layer, and a second side of the IC die opposite the first side of the monocrystalline material layer; and
a composite layer on the second side of the IC die, wherein the composite layer comprises:
a first constituent material having a first linear coefficient of thermal expansion (CTE) and a first thermal conductivity, the first thermal conductivity exceeding that of the monocrystalline material layer; and
a second constituent material having a second CTE, the second CTE lower than the first CTE by at least 5 ppm/K, and a second thermal conductivity exceeding that of the monocrystalline material layer.