Electric heating – Metal heating – Wire – rod – or bar bonding
Patent
1981-08-03
1983-06-07
Shaw, C. C.
Electric heating
Metal heating
Wire, rod, or bar bonding
29839, 219 5622, 228 45, 228173E, B23K 3100
Patent
active
043872832
ABSTRACT:
An apparatus and method of forming aluminum balls utilized for ball bonding. The aluminum balls are formed in a moist argon atmosphere by applying an electrical potential across a spark gap causing a spark to occur which causes the end of the aluminum wire to melt, forming an aluminum ball.
REFERENCES:
patent: 3641660 (1972-02-01), Adams et al.
patent: 4098447 (1978-07-01), Edson et al.
Landes, "Self Starting Current Control Discharge Bonding Wire Ball Maker", U.S. Patent Application Ser. No. 250,623, 3/30/81.
Van Luvanee et al., "Microelectronic Wire Bonding Apparatus Having a Galvanometric Motor", U.S. Patent Application Ser. No. 54,324, 7/2/79.
Majors Edward M.
Peterson James R.
Demond Thomas W.
Donaldson Rich
Sharp Mel
Shaw C. C.
Texas Instruments Incorporated
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