Patent ID: 7649152

Claim:
A conductive ball bonding method in which plural electrodes formed on objects to be bonded are bonded by using a conductive ball to be melted, comprising the steps of: picking up said conductive ball and conveying said conductive ball onto said electrodes, by means of a pick-up nozzle having pick-up openings corresponding to said electrodes on said objects to be bonded; irradiating a laser beam in such a manner that the laser beam passes through a transparent member which covers a part of a conjugate space within said pick-up nozzle and passes through said pick-up opening of said pick-up nozzle to reach said conductive ball; and melting said conductive ball on said electrode by irradiation of the laser beam, wherein at a time when the laser beam passes through said pick-up opening, said pick-up opening acts as a mask for irradiating the laser beam.