Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Of specified material other than unalloyed aluminum
Patent
1996-12-19
1999-11-02
Kelley, Nathan K.
Active solid-state devices (e.g., transistors, solid-state diode
Combined with electrical contact or lead
Of specified material other than unalloyed aluminum
257738, H01L 2348
Patent
active
059776374
ABSTRACT:
An integrated electronic device having an electric connection between a first electrode of a semiconductor chip and a second electrode of a circuit board. One embodiment according to the present invention is a method for fabricating an integrated electronic device having an electric connection between a first electrode of a semiconductor chip and a second electrode of a circuit board, both surfaces of the first and second electrodes having an adhesive tendency to molten metal, the method comprising the steps of forming a metal bump on the first electrode, the metal bump being made of a soldering metal alloy consisting of a solid phase component and a liquid phase component at an operating temperature; and forming an electric connection between the first electrode and the second electrode by heating the soldering metal alloy so as to adhere to the surface of the second electrode.
REFERENCES:
patent: 5376584 (1994-12-01), Agarwala
patent: 5859470 (1999-01-01), Ellerson et al.
Zequn Mei, Low-Temperature Solders, Hewlett-Packard Journal p. 91, Aug. 1996.
Akamatsu Toshiya
Karasawa Kazuaki
Nakanishi Teru
Shimizu Kozo
Fujitsu Limited
Kelley Nathan K.
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