Patent ID: 8663548
Filing Date: 2014-03-04
Classification: B22F,B82Y,C23C,H05K,Y10S,Y10T

Abstract:
1. A method of soldering an electronic component to a circuit board, the method comprising: applying a soldering paste comprising a nanomaterial between the electronic component and the circuit board, the nanomaterial comprising a plurality of metal nanoparticles, each metal nanoparticle being surrounded by a surfactant layer and about 30-50% of said metal nanoparticles having a diameter of 20 nanometers or less but greater than zero and the remaining 70-50% of the metal nanoparticles having a diameter greater than 20 nanometers; heating the soldering paste until a surfactant comprising the surfactant layer melts or evaporates, thereby causing the plurality of metal nanoparticles to fuse; and allowing the heated soldering paste to cool down to form a soldering joint between the electronic component and the circuit board.