Thermally-enhanced circuit assembly

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – Insulating material

Reexamination Certificate

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Details

C257S717000, C257SE23101, C257SE21511, C438S108000, C438S122000

Reexamination Certificate

active

11373703

ABSTRACT:
A circuit assembly for mounting one or more integrated circuits that effectively dissipates heat generated by the integrated circuits, and a corresponding method for fabricating such a circuit assembly. The circuit assembly comprises a substrate, a thermally-conductive adhesive layer and a heat-dissipating layer. The substrate includes an opening extending between a first surface and a second surface of the substrate. An integrated circuit is to be mounted on the first surface of the substrate substantially coincident with the opening. The thermally-conductive adhesive layer is at least partially disposed within the opening in the substrate. The heat-dissipating layer is disposed on the second surface of the substrate and includes a raised portion that at least partially extends through the opening in the substrate.

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Guenin, Bruce M. et al., “Analysis of a Thermally Enhanced Ball Grid Array Package,” IEEE Trans. on Components, Packaging, and Manufacturing Tech., Dec. 1995, pp. 749-757.
Guenin, Bruce M., “The Many Flavors of Ball Grid Array Packages,” Electronics Cooling, Feb. 2002, pp. 32-40 (vol. 8, No. 1).
Retrieved Mar. 1, 2006 from http://www.electronics-cooling.com/html/2002—february—a3.html.

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