Patent ID: 8815732
Filing Date: 2014-08-26
Classification: H01L

Abstract:
1. A semiconductor device comprising: a wire loop having an initial ball disposed on the leading end of the wire loop to make a first electrical connection; a bonded ball disposed on the first bonding point, the bonded ball electrical bonded with the initial ball; a ball neck integral with the bonded ball, the ball neck comprising a first flat surface having a disk-shaped portion, the disk-shaped portion having a diameter that is smaller than a diameter of the bonded ball; a pressed portion comprising only a single fold-back of the wire loop and a second flat surface, the fold back continuously extending from the bonded ball, the second flat surface formed on the fold-back, the pressed portion disposed on the first flat surface of the ball neck and bonded within the diameter of the bonded ball, the pressed portion having an entirely plastic-deformed structure by crushing a portion of the wire loop until plastic deformation so that the pressed portion has an overall wire loop height that enhances a bonding strength of the wire loop at the first bonding point; and a second bonded portion provided on the second bonding point to make a second electrical connection.