Electric heating – Metal heating – Wire – rod – or bar bonding
Patent
1984-05-14
1985-06-11
Shaw, Clifford C.
Electric heating
Metal heating
Wire, rod, or bar bonding
219 5621, 2191304, B23K 906
Patent
active
045230714
ABSTRACT:
A ball is formed at the tip of a wire by an arc. The arc is initiated and maintained across an air gap between the wire tip and an electrode by applying timed RF and DC voltages between them.
REFERENCES:
patent: 2708719 (1955-05-01), Roach
patent: 2784349 (1957-03-01), Anderson
patent: 3767101 (1973-10-01), Genrich
patent: 4459452 (1984-07-01), Carter
A. Bischoff and F. Aldinger, "Ball Bonding of Nonprecious Metal Wires", Semiconductor International, Aug. 1982, pp. 65-80.
Bancroft Charles F.
Brown Thomas B.
Bullock Peter W.
Sutter, Jr. Leroy V.
Bethurum William J.
Hughes Aircraft Company
Karambelas Anthony W.
Shaw Clifford C.
Szabo Joseph E.
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