Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1995-04-10
1997-02-18
Lusignan, Michael
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427265, 427272, 427282, 29830, 29874, 29880, 22818021, B05D 512, H01R 4302, B23K 3102
Patent
active
056039816
ABSTRACT:
An electrical connecting device including a first circuit board providing thereon with input/output terminals, each of the terminals having a tip surface coated with gallium and a second circuit board providing thereon with contact terminals, each of the terminals having a tip surface coated with indium or tin. A low-melting point alloy layer is formed by a mutual action between gallium and indium or tin, when the input/output terminals of the first circuit board are in contact with the respective terminals of the second circuit board and electrically connected to each other. The second metal layer includes a plurality of wire-like metal supports extending substantially perpendicular to the surface of the terminal and a low-melting point metal retained by the wire-like metal supports.
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Chiyonobu Tatsuo
Hashimoto Kaoru
Kawano Kyoichiro
Watanabe Kouji
Fujitsu Limited
Lusignan Michael
Talbot Brian K.
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