Patent ID: 6718604
Filing Date: 2004-04-13
Classification: H01L,Y10T

Abstract:
A method of mounting an electronic device element, comprising the steps of:providing the electronic device element having metal bumps located on a surface thereof; providing a bonding tool having a pressing surface in which a vacuum opening to apply a suction force to the electronic device element is provided on the pressing surface of the bonding tool; providing a mounting substrate; positioning the vacuum opening on the reverse surface of the electronic device element at a location where no metal bumps of the electronic device element are located when the vacuum opening applies the suction force to the electronic device element; keeping the pressing surface of the bonding tool in contact with a reverse surface of the electronic device element; and applying an ultrasonic wave to the bonding tool, thereby mounting the electronic device element on the mounting substrate; wherein a maximum length of the pressing surface of the bonding tool in the ultrasonic-wave-oscillation direction is at least approximately 0.5 times a maximum length of the reverse surface of the electronic device element in the ultrasonic-wave-oscillation direction.