Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-05-21
1991-10-08
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Electrical device making
29838, 29845, H05K 330
Patent
active
050541927
ABSTRACT:
A method and apparatus for interconnecting electronic circuits using nearly pure soft annealed gold mechanically compressed within through-plated holes. The invention has its application in attaching integrated circuit dice directly to circuit boards by ball bonding gold wires to the bonding pads of the integrated circuit dice in a substantially perpendicular relationship to the surfaces of the dice and inserting the gold leads into through-plated holes of circuit boards which provide an electrical and a mechanical connection once the leads are compressed within the through-plated holes. The present invention also finds its application in the interconnection of sandwiched circuit board assemblies where soft gold lead wires are inserted into axially aligned through-plated holes of the circuit boards and compressed so that the hold lead wires compress and buckle within the through-plated holes, forming an electrical connection between the circuit boards.
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Cray Seymour R.
Krajewski Nicholas J.
Cray Computer Corporation
Eley Timothy V.
Ley John R.
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