Importance

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Abstract

A thermal management circuit material comprises a thermally conductive metallic core substrate having at least one through-hole via, non-metallic dielectric layers deposited on both sides of the metallic core substrate and on the containing walls of the through-hole via, electrically conductive metal layers on the non-metallic dielectric layers and an electrically conductive metal-containing core element filling the insulated through-hole via connecting at least a portion of each of the electrically conductive metal layers. Also disclosed are methods of making such circuit materials, comprising forming non-metallic dielectric layers by vapor deposition of a non-metallic material, for example by reacting an oxygen-containing precursor with an aluminum containing precursor and/or reacting a nitrogen-containing precursor with an aluminum or boron containing precursor on the surface of the metallic core substrate. Articles having a heat-generating electronic device such as an HBLED mounted in the circuit material are also disclosed.

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First Claim