HETEROGENEOUS THERMAL INTERFACE

摘要

An electronic apparatus, such as a lighting fixture, includes a substrate, an electronic device such as a chip-on-board light emitting diode and a thermal interface located between the substrate and the electronic device. The thermal interface includes at least two distinct materials, including a dielectric material and a thermally conductive material. The dielectric material includes a cutout into which the thermally conductive material is located. The dielectric material can completely surround the perimeter of the electronic device or can be located proximate portions of the electronic device that are prone to arcing in order to protect the substrate from arcing. The electronic apparatus operates at a reduced temperature as compared to an electronic apparatus that does not include the thermal interface. Methods for making an electronic apparatus having a thermal interface with a discrete dielectric material and thermally conductive material are also described.

主权项

1. An electronic apparatus comprising:
a substrate; an electronic device; and a thermal interface located between the substrate and the electronic device, the thermal interface comprising at least two distinct materials, the at least two distinct materials comprising a dielectric material and a thermally conductive material, wherein the dielectric material comprises a cutout into which the thermally conductive material is located.