Electronic packaging apparatus and method

Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Metallic housing or support

Reexamination Certificate

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C438S122000, C257SE21499

Reexamination Certificate

active

10815185

ABSTRACT:
An electronic assembly includes a substrate, a device attached to the substrate, and a thermally conductive heat spreader covering the device and at least a portion of the substrate. A metal substantially fills the space between the device and the thermally conductive heat spreader. A method includes attaching at least one die to a substrate, placing a thermally conductive heat spreader over the die, and injecting a molten metal material into the space between the thermally conductive heat spreader and the die.

REFERENCES:
patent: 5276289 (1994-01-01), Satoh et al.
patent: 5737191 (1998-04-01), Horiuchi et al.
patent: 5773362 (1998-06-01), Tonti et al.
patent: 2002/0096508 (2002-07-01), Weaver et al.
patent: 2002/0180035 (2002-12-01), Huang et al.
patent: 2003/0129826 (2003-07-01), Werkhoven et al.
IBM Technical Disclosure Bulletin, NN79034125, “Liquid-Filled Bellows Heat Sink,” 1979.
IBM Technical Disclosure Bulletin, NN79091553, “Semiconductor Chip with Liquid Metal Heat Transfer,” 1979.

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