FLIP CHIP ATTACH ON FLEXIBLE CIRCUIT CARRIER USING CHIP WITH METALLIC CAP ON SOLDER

FLIP CHIP ATTACH ON FLEXIBLE CIRCUIT CARRIER USING CHIP WITH METALLIC CAP ON SOLDER

A structure and method is disclosed for directly attaching a device or package on flexible organic circuit carriers having low cost and high reliability. IC chips with a new solder interconnect structure, comprised of a layer of pure tin, deposited on the top of high melting Pb-Sn solder balls are e...

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Hauptverfasser: DALAL, HORMAZDYAR M, FALLON, KENNETH M, GAUDENZI, GENE J, MILKOVICH, CYNTHIA S
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creator DALAL, HORMAZDYAR M
FALLON, KENNETH M
GAUDENZI, GENE J
MILKOVICH, CYNTHIA S
description A structure and method is disclosed for directly attaching a device or package on flexible organic circuit carriers having low cost and high reliability. IC chips with a new solder interconnect structure, comprised of a layer of pure tin, deposited on the top of high melting Pb-Sn solder balls are employed for joining. These methods, techniques and metallurgical structures enables direct attachment of electronic devices of any complexity to any substrate and to any level of packaging hierarchy. Also, devices or packages having other joining technologies, eg. SMT, BGA, TBGA, etc. could be joined onto the flexible circuit carrier.
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title FLIP CHIP ATTACH ON FLEXIBLE CIRCUIT CARRIER USING CHIP WITH METALLIC CAP ON SOLDER
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