Patent ID: 8973807
Filing Date: 2015-03-10
Classification: B23K,B29C,H01L

Abstract:
1. A bonding tool comprising: a horn that transmits an ultrasonic vibration; an ultrasonic vibrator that is provided at one end of the horn, and generates the ultrasonic vibration; and an electronic component holding part that holds an electronic component, wherein the electronic component holding part has a male fitting part, and an electronic component holding face that holds the electronic component on an opposite side to the male fitting part, a female fitting part in a shape according to a shape of the male fitting part is formed in a predetermined face of the horn, the male fitting part is fitted into the female fitting part via an adhesion layer the male fitting part is a ridge whose cross-sectional shape is trapezoidal, the female fitting part is a groove whose cross-sectional shape is trapezoidal, a top face of the ridge contacts a bottom face of the groove via the adhesion layer, a width of the top face of the ridge is larger than a width of the bottom face of the groove, the horn is in a shape whose longer direction is a direction in which the ultrasonic vibration is transmitted, the groove is formed in a face on a lower side of the horn, in a direction orthogonal to the longer direction, and a thickness of the adhesion layer between the top face of the ridge and the bottom face of the groove is larger than a thickness of the adhesion layer between a side face of the ridge and a side face of the groove, the side face of the ridge contacts via the adhesion layer, so that (i) a vibration of the horn in the direction in which the ultrasonic vibration is transmitted propagates to the electronic component holding part without being absorbed by the adhesion layer between the side face of the ridge and the side face of the groove, the side face of the ridge contacts via the adhesion layer, and (ii) swell of the horn in a direction orthogonal to the electronic component holding face, which is generated by the vibration of the horn, is absorbed by the adhesion layer between the top face of the ridge and the bottom face of the groove.