Capillary-retaining structure for an ultrasonic horn

Details Capillary-retaining structure for an ultrasonic horn Capillary-retaining structure for an ultrasonic horn

1993-11-22

1994-11-29

Heinrich, Samuel M.

Metal fusion bonding

Means to apply vibratory solid-state bonding energy to work

228 45, 228 55, 156 732, 1565801, B23K 2010, H01L 21607

Patent

active

053682165

ABSTRACT:
A capillary-retaining structure for an ultrasonic horn used in a wire bonding apparatus including a stress relief hole formed inside of a capillary attachment hole that is opened at an end portion of the ultrasonic horn. Thus, the capillary retention by the ultrasonic horn is stabilized, and the vibrational characteristics of the ultrasonic horn are also stabilized, thus improving overall bondability in wire bonding. The same effect can be obtained by setting the thickness of a portion between the end surface of the horn and the capillary attachment hole to be thin or by utilizing a bold and nut combination to hold the capillary.

REFERENCES:
patent: 3384283 (1968-05-01), Mims
patent: 5180093 (1993-01-01), Stansbury et al.
patent: 5207369 (1993-05-01), Haji et al.
patent: 5275324 (1994-01-01), Yamazaki et al.

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