| 摘要 |
PURPOSE: To provide a nondirective ultrasonic wire bonder in which alignment is not required between the longitudinal direction of wire and the direction of an ultrasonic phone. CONSTITUTION: An ultrasonic oscillator for wire bonder has bolting Langevin structure for clamping an electrostrictive element 1 by means of the uniaxial structure of an ultrasonic phone 3 and a back face body 2 wherein the oscillator has resonance frequency of 330kHz or above and a length equal to or longer than one wavelength of longitudinal oscillation. |
