Capillary underflow integral heat spreader

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

Reexamination Certificate

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Details

C257S706000, C257S710000, C257S714000

Reexamination Certificate

active

07439617

ABSTRACT:
A cooling device including a thermally conductive body with a first mating surface, a first solder wettable material disposed in a pattern at a portion of the first mating surface, and a reflowable solder material disposed at the first mating surface. A portion of the solder material is configured to be capable of contacting an adjacently disposed second mating surface, and when melted, to form a single flow front through a bond line gap between the first mating surface of the cooling device and the second mating surface of, for example, a thermal component.A mating surface of the cooling device is positioned adjacent to a mating surface of a thermal component and the solder material is heated at least to its melting point. The solder material is maintained in a molten state until it has flowed into and substantially filled a bond line gap between the mating surface of the cooling device and the mating surface of the thermal component, and then cooled below its melting point, physically and/or thermally coupling the cooling device and the thermal component.

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patent: 2002/0196650 (2002-12-01), Chang
patent: 2004/0156173 (2004-08-01), Jeong
patent: 2004/0188814 (2004-09-01), Houle et al.
patent: 2005/0121776 (2005-06-01), Deppisch et al.
patent: 2006/0103011 (2006-05-01), Andry et al.

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