Patent ID: 7523775

Claim:
A bonding apparatus for a semiconductor chip using a method of bonding a semiconductor chip, the method comprising: positioning and placing in contact bumps or pads of a semiconductor chip and pads or bumps of a substrate; applying ultrasonic vibration of a first predetermined frequency to the semiconductor chip to make the bumps or pads of the semiconductor chip and the pads or bumps of a substrate rub against each other to level the bumps; and applying ultrasonic vibration of a second predetermined frequency that differs to the first predetermined frequency to the semiconductor chip to bond the bumps and the pads of the semiconductor chip and the substrate, and the apparatus comprising: a contact body capable of connecting to the semiconductor chip, at a contact point provided along a longitudinal center of the contact body, that is positioned with respect to the substrate by the positioning step; an ultrasonic vibrator configured to vibrate at the first and second predetermined frequencies that is connected to the contact body and applies ultrasonic vibration of the first and second predetermined frequencies to the semiconductor chip via the contact body, the ultrasonic vibrator including a first ultrasonic vibrator provided at a first end surface of the contact body and a second ultrasonic vibrator provided at a second end surface of the contact body; and control means for controlling the first ultrasonic vibrator and the second ultrasonic vibrator such that the first ultrasonic vibrator vibrates at the first predetermined frequency to level the bumps and the second ultrasonic vibrator vibrates at the second predetermined frequency to bond the bumps, the first predetermined frequency being a lower frequency than the second predetermined frequency.