Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1990-08-07
1992-05-12
Picard, Leo P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361387, 361388, 361389, 361383, 165 803, 165185, 357 81, 357 80, 174 163, H05K 720
Patent
active
051133156
ABSTRACT:
For use as a substrate for a heat generating microelectronic integrated circuit, a ceramic panel is provided having small thickness in comparison to its length and breadth, having on at least the surface opposite the one bearing the microelectronic integrated circuit, a layer of heat conductive metal and having a plurality of closely spaced, small cross section extensions of the heat conductive metal layer extending into the ceramic material to a depth of at least about one fifth of its thickness. The substrate is particularly useful for the mounting of hybrid microelectronic circuits to improve the heat dissipation capability of the ceramic substrate.
REFERENCES:
IBM Technical Disclosure Bulletin, Berndlmaier et al., Multilayer Metal Substrate Package, Mar. 1980, vol. 22 No. 10, pp. 4518-4520.
IBM Technical Disclosure Bulletin, Mandel et al., Heat Dissipator Assemblies, Mar. 1966, vol. 8, No. 10, pp. 1460-1461.
IBM Technical Disclosure Bulletin, Coles, Heat Sink, Jul. 1963, vol. 6 No. 2.
Cirqon Technologies Corporation
Picard Leo P.
Whang Young S.
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