Electric heating – Metal heating – For bonding with pressure
Patent
1990-11-20
1992-08-25
Reynolds, Bruce A.
Electric heating
Metal heating
For bonding with pressure
219 8512, 219 8513, 219236, 219227, 228110, 228 11, 156 731, 392407, B23K 2010, H05B 100
Patent
active
051421178
ABSTRACT:
A heating element is held in position by a rigid holder constructed to surround an ultrasonic bonding tool and is itself fastened in a fixed position relative to the bonding tool, such that the rigid holder and the heating element are held in close proximity to the bonding tool without physically contacting the bonding tool. This serves to heat the bonding tool, facilitating adequate bonding without overly heating the integrated circuit assembly and without interfering with the critical ultrasonic properties of the bonding tool and ultrasonic transducer horn.
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Hoggatt Mark C.
Narayanan Arun
Barbee Joe E.
Jeffery John A.
Motorola Inc.
Reynolds Bruce A.
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