Patent ID: 8148253
Filing Date: 2012-04-03
Classification: H01L,H05K,Y02P,Y10T

Abstract:
1. An electronic component soldering method, which is a method for obtaining an electronic component soldering structure which is formed by soldering plural first electrodes provided on a first surface of a first electronic component to plural second electrodes provided on a second surface of a second electronic component, the method comprising the steps of: a resin applying step of applying thermosetting resin containing solder particles onto the second surface; a part mounting step of mounting on the second electronic component the first electronic component in which the first surface has been heated at a temperature that is higher than a melting temperature of the solder particles, and bringing the first surface close to the second surface in the opposite state to each other; and a heat-press step of pressing the first electronic component on the second electronic component by a predetermined pressure force, and heating the solder particles and thermosetting resin by heat transmission from the first surface of the first electronic component, wherein in the part mounting step, the surface of one of the plural first electrodes and the surface of a corresponding one of the plural second electrodes are brought into contact with the solder particles in the thermosetting resin, and these solder particles are melted firstly from the contact portion with the surface of the one of the plural first electrodes, and in the heat-press step, the predetermined pressure force is controlled at such pressure load that the solder particles in the melting state can retain a substantially spherical shape in the thermosetting resin, and heating of the solder particles and the thermosetting resin is continued from the first surface, whereby the solder part having narrowed parts is formed, and the resin part is formed by causing the thermosetting resin to thermoset.