Patent ID: 7119000

Claim:
A method of manufacturing a semiconductor device comprising, in the recited order, the steps of: forming an insulating film on a surface of a semiconductor element or a circuit wiring board having electrodes on the surface thereof; forming openings in the insulating film by patterning the insulating film and then removing portions of the insulating film above the electrodes; supplying a first metal into the openings; heating the first metal to melt and coagulate the first metal, wherein the first metal has a characteristic in which a volume thereof is increased when it is heated to be molten and coagulated in such a manner that the diameter of the opening of the insulating layer is increased; supplying a second metal into the openings on the coagulated first metal; heating the first metal and the second metal to melt and coagulate the first metal and the second metal; and removing the insulating film.