Multiple chip module assembly for top of mother board

Details Multiple chip module assembly for top of mother board Multiple chip module assembly for top of mother board

1996-01-30

1998-03-17

Tolin, Gerald P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

257727, 361719, H05K 720

Patent

active

057294330

ABSTRACT:
An assembly for electronic components having heat spreaders on two sides comprises a mother board on which to mount electronic components, having a top side with an array of board contacts. A multiple chip integrated circuit module carries integrated circuits. The multiple chip module consists of a first substrate, such as aluminum, with a multi-layer interconnect structure on one surface of the aluminum substrate. The integrated circuits are mounted on the interconnect structure on the first substrate. A second substrate manufactured using printed wiring board technology, surrounds the first substrate, and includes an interconnect structure and an array of circuit contacts. Conductors connect the interconnect structure on the first substrate with the interconnect structure on the second substrate. A thermally conductive baseplate is coupled with the multiple chip module on the side opposite the array of circuit contacts. An interposer providing electrical connection between the array of circuit contacts on the multiple chip module and the array of board contacts on the printed wiring board is placed between the multiple chip module and the board. A top heat sink, such as a heat spreader assembly, is placed in contact with a second surface of a thermally conductive baseplate. On the first surface of the thermally conductive baseplate, a thermally conductive member, such as an aluminum slug or the like is placed. This thermally conductive member passes through an opening in the mother board to the side opposite the array of board contacts. A bottom heat sink is placed opposite the bottom side of the board and contacts the thermally conductive member.

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