Patent ID: 7163137
Filing Date: 2007-01-16
Classification: H01L,H05K,Y02P

Abstract:
1. A method of manufacturing a mounting board comprising electronic parts, each of the electronic parts which have a solder bump provided on the bottom surface thereof and is laminated on a substrate in multiple levels, the method comprises: a solder-feeding step of feeding a solder onto a first electrode of the substrate; a first recognition step of recognizing the position of the substrate; a first mounting step of positioning a first electronic part for a first level relative to the substrate according to the recognition result in the first recognition step and mounting by landing the solder bump of the first electric part onto the first electrode; a second recognition step of recognizing the position of the first electronic part; a second mounting step of positioning a second electronic part for a second level relative to the first electronic part according to the recognition result in the second recognition step and mounting by landing the solder bump of the second electronic part on a second electrode provided on the upper face of the first electronic part; and a reflow step of heating the substrate on which the first electronic part and the second electronic part are mounted so as to solder-bond the first electronic part to the substrate and at the same time solder-bond the second electronic part to the first electronic part, and further comprising: a step of feeding flux used for solder bonding on a flux transfer table; and a step of transferring the flux onto the solder bump of the second electronic part on the flux transfer table prior to the second mounting step.