Patent ID: 7161245

Claim:
An electronic component-mounted structure comprising: a substrate having a connecting terminal; an electronic component separated from the substrate by a space, the electronic component having an operating temperature of T 0 ; a bump electrode formed on the electronic component, the bump electrode including a protection made of a first resin and a conductive film covering at least a top of the protection, the conductive film abutting against the connecting terminal of the substrate, the first resin having a glass transition temperature of Tgb; and a second resin filling the space between the electronic component and the substrate, the second resin having a glass transition temperature of Tgr, wherein T 0 <Tgr<Tgb, wherein-the second resin has a curing temperature of Tc such that T 0 <Tgr<Tc<Tgb, and wherein the following relationship is satisfied: αb 1( Tc−T 0)<α r 2( Tc−Tgr )+α r 1( Tgr−T 0), wherein αb 1 is a thermal expansion coefficient of the first resin below the glass transition temperature Tgb, αr 2 is a thermal expansion coefficient of the second resin above the glass transition temperature Tgr, and αr 1 is a thermal expansion coefficient of the second resin below the glass transition temperature Tgr.