Patent ID: 8960526
Filing Date: 2015-02-24
Classification: B23K,H01L,H05K,Y10T

Abstract:
1. A soldering process with which a first electrode having a solder portion thereon is soldered to a second electrode, wherein the process comprises: a first step of supplying a flux comprising a liquid base material comprising a resin component which is dissolved in a solvent, an active component which removes an oxide, and a metal powder made of a metal which has a melting point higher than that of a solder material which forms the solder portion, wherein the metal powder is in the form of scales, and the flux contains the metal powder in an amount in the range between 1% and 9% by volume based on a volume of the flux, to at least one of the solder portion and the second electrode, a second step of aligning the first electrode with the second electrode so as to locate the flux between the solder portion and the second electrode, a third step of heating so as to melt the solder portion, so that a molten solder material from the solder portion comes in contact with the second electrode, and a fourth step of solidifying the molten solder material after the third step.