Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1992-12-08
1996-05-21
Picard, Leo P.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
361761, 361767, 29830, 257690, H05K 702
Patent
active
055195792
ABSTRACT:
The invention is a method for replacing integrated circuit chips directly attached on printed circuit boards, and a board and a replacement card module that may be used to practice the method. As the first step, the electronic component and the surrounding fan-out wiring area on the board is mechanically removed, e.g., by micro-milling, typically leaving a recess in the board. A card module having a replacement electronic component and associated fan-out wiring is attached in the recess of the board by common bonding agents. The card module is designed so that its fan-out wiring matches the removed fan-out wiring, and hence is adapted for attachment to the board wiring. After attaching the card module, the wiring of the board is electrically connected with the wiring of the card module by wire bonding, tape automated bonding or other appropriate solder techniques.
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Fink Peter
Horbach Heinz G.
International Business Machines - Corporation
Picard Leo P.
Skladony William P.
Whang Y.
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