Patent ID: 6695200
Filing Date: 2004-02-24
Classification: B23K,H01L,H05K

Abstract:
A method of producing an electronic part having electron conductive bumps, each of which is formed by mounting one solder ball on each of a plurality of metallic electrode pads of the electronic part, the method comprising the steps of:providing an electronic part having a plurality of metallic electrode pads and wherein surface portions of the electronic part other than the metallic electrode pads are not metallic, providing an adhesive film of a predetermined thickness on each of said metallic electrode pads by immersing the electronic member in a solution containing an imidazole derivative that is adsorbed on metallic portions and that is not adsorbed on portions other than metallic portions, so that the adhesive film of a predetermined thickness is provided on each of the metallic electrode pads without being provided on any portion other than said metallic electrode pads; and mounting solder balls on said adhesive film by use of a solder ball-aligning and supplying means so that said one solder ball of a predetermined volume is provided at a location of each of the electrode pads through the adhesive film.