Contacting head for forming a wire connection on an integrated c

Details Contacting head for forming a wire connection on an integrated c Contacting head for forming a wire connection on an integrated c

1976-12-15

1978-01-24

Kelly, Donald G.

Metal fusion bonding

Means to apply vibratory solid-state bonding energy to work

226 97, 228 45, B23K 2102, H01L 21607

Patent

active

040699617

ABSTRACT:
A contacting head for making a wire connection, particularly an aluminum or gold wire connection on an integrated circuit by ultrasonic or thermocompression bonding, in which a contacting arm is provided with a concave contacting tool or a capillary, and supplies ultrasonic or heat energy. The concave contacting tool has a gripper, or the capillary has a wire clamping device for effecting a feed or clamping of the wire during movement of the contacting arm. A driving unit provides for threading the wire through a wire guiding device which is entirely enclosed, and through the concave contacting tool or the capillary. The driving unit also provides for controlling the wire tension and produces a gas stream in the enclosed wire guiding device. A magnetic arrangement with a permanent magnet and a non-ferrous core provides for electrodynamic contact pressure control of the contacting arm and for control of the gripper. The wire supply spool is encapsulated and mounted on a base, together with a housing which is vertically movable on the base and mounts the contacting arm, the driving unit and the gripper or wire clamping device. The wire guiding device connects the wire supply spool to the driving unit, and is in the form of an elastic metal tube for the wire.

REFERENCES:
patent: 3342396 (1967-09-01), Miller
patent: 3643321 (1972-02-01), Field et al.
patent: 3672556 (1972-06-01), Diepeveen
patent: 3776447 (1973-12-01), Adams et al.
patent: 4019669 (1977-04-01), Tanimoto et al.

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