Metal working – Method of mechanical manufacture – Electrical device making
Patent
1997-10-28
1999-10-05
Young, Lee
Metal working
Method of mechanical manufacture
Electrical device making
29832, 29830, 361719, 257691, 174 163, H05K 330
Patent
active
059605359
ABSTRACT:
A heat conductive substrate is mounted within a through-opening of a printed circuit board. An integrated circuit then is mounted to one side of the heat conductive substrate, while a heat sink is fixed in thermal contact to the other side of the substrate. There is no direct thermal contact between the IC and the PC board. The heat conductive substrate is mounted to the PC board by applying a controlled pressure to normal surfaces of multiple portions of the substrate. Such pressure reducing the thickness and expands the area of the pressed portions locking the substrate to the PC board. An air gap occurs between the substrate and the PC board everywhere except for the pressed regions of the substrate. Such pressed regions occur along the periphery of the substrate.
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Gilson Charlie W.
Irmscher Horst F.
Jondrow Tim J.
Rubens Paul A.
Spreadbury Brian G.
Hewlett--Packard Company
Myers Timothy F.
Rose Curtis G.
Smith Sean P.
Young Lee
LandOfFree
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