Patent ID: 6335568
Filing Date: 2002-01-01
Classification: H01L

Abstract:
A method of fabricating a semiconductor device, comprising:a first step of bonding a conductive wire to any one of a plurality of electrodes of semiconductor chip; a second step of tearing off the bonded conductive wire in such a manner that a part of the conductive wire remains on the one of the electrodes; a third step of pressing the part of the conductive wire that remains on the one of the electrodes, to form a bump comprising a base portion in contact with the one of the electrodes and a head portion of a width that is less than the width of the base portion, the head portion having a substantially planar upper surface, the base portion having a curved section that extends such that a tangent to a point on the curved section is parallel to the substantially planar upper surface of the head portion and intersects the head portion; and a fourth step of bonding the bump and a lead; wherein a distance D between an upper surface of the base portion of the bump and an upper surface of the head portion of the bump is set in the third step in such a manner that: 0