Patent ID: 8939346
Filing Date: 2015-01-27
Classification: B23K,H01L,H05K

Abstract:
1. A method comprising; arranging a planar surface of a semiconductor device and a planar surface of a substrate substantially in parallel such that separate solder portions arranged on conductive pads of the semiconductor device are aligned with corresponding separate solder portions arranged on conductive pads of the substrate, at least one of the separate solder portions arranged on the conductive pads of the substrate and at least one of the separate solder portions arranged on the conductive pads of the semiconductor device defining a gap therebetween, and such that at least another one of the separate solder portions arranged on the conductive pads of the substrate and at least another one of the separate solder portions arranged on the conductive pads of the semiconductor device are in contact with each other; heating the arranged semiconductor device and the substrate to liquefy the separate solder portions arranged on the conductive pads of the semiconductor device and the separate solder portions arranged on the conductive pads of the substrate; estimating a frequency in accordance with a number of the separate solder portions arranged on conductive pads of the semiconductor device that have liquefied and a mass of the semiconductor device; and exerting an oscillating force operative to oscillate the semiconductor device relative to the substrate at the frequency to close the gap between the at least one of the separate solder portions arranged on the conductive pads of the substrate and the at least one of the separate solder portions arranged on a conductive pads of the semiconductor device to form a bond therebetween.