Patent ID: 6687988
Filing Date: 2004-02-10
Classification: B23K,H01L,Y10T

Abstract:
A method for forming pin-form wires in which a ball is formed on a tip end of a wire passed trough a capillary of a wire bonding apparatus, said ball is bonded to an electrode pad of an electronic circuit element using said capillary, said capillary is raised by a fixed amount, and said pin-form wire is formed by cutting a portion of said wire located above said ball, said method comprising the ordered steps of:setting a length of wire extending from a lower end of said capillary longer than a wire length required for forming a ball formed in next step, forming said ball on said tip end of said wire, forming notches in a portion of said wire located between said ball and said capillary by means of cutters provided in said wire bonding apparatus, bonding said ball to said electrode pad, and pulling said wire sword so as to cut said wire at an area of said notches.