Metal fusion bonding – Process – Using a compliant cushioning medium
Patent
1975-01-13
1976-08-10
Baldwin, Robert D.
Metal fusion bonding
Process
Using a compliant cushioning medium
228 55, B23K 100
Patent
active
039737144
ABSTRACT:
Compliant bonding of successive beam-lead semiconductor devices to successive metallic patterns on substrates is accomplished with a bonding apparatus that uses an indexable compliant member. A bonding head of the apparatus is provided with a single movable tip which disengages from the compliant member during indexing of the member. The movable tip engages with a portion of the compliant member that is suspended between two drive sprockets when it is desired to perform a bonding operation. The engagement of the tip with the compliant member produces tension in the member. The tension results in a precise and flat configuration within the engaged portion of the member. The flat configuration enhances accurate alignment of workpieces to the compliant member.
A toggle linkage is described as a desirable system for moving the bonding tip with respect to the head.
REFERENCES:
patent: 3627190 (1971-12-01), Ramsey
patent: 3693473 (1972-09-01), Beachner
patent: 3696985 (1972-10-01), Herring et al.
Lesyk Joseph N.
Ludwig David P.
Monahan Jack J.
Baldwin Robert D.
Hampilos Gus T.
Peters R. Y.
Western Electric Company Inc.
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