Patent ID: 6303878
Filing Date: 2001-10-16
Classification: H01L,H05K

Abstract:
A mounting structure of an electronic component on a substrate board, comprising:a plurality of solder bumps disposed on one surface of said electronic component;a plurality of substantially circular first electrodes formed on said substrate board corresponding to said solder bumps, wherein said solder bumps are melted and bonded to said electrodes to electrically connect said electronic component with said substrate board through said solder bumps and said electrodes; andlead wires formed in the substrate board and connected to each of said electrodes, wherein:said lead wires connected to most-externally-located electrodes are formed on said substrate board and extend from portions of said most-externally-located electrodes located inside of a polygon formed by connecting each of centers of adjacent most-externally-located electrodes and solder bumps corresponding to said most-externally-located electrodes are bonded to not only surfaces thereof but also sides thereof at the portions of said most-externally-located electrodes located outside of said polygon.