Patent ID: 8922011

Claim:
A mounting structure, comprising: an electronic component having a plurality of first electrode terminals; a circuit board having a plurality of second electrode terminals for the respective first electrode terminals; and a plurality of joining portions that join the first electrode terminals to the respective second electrode terminals, wherein the joining portions each include a first projecting electrode formed on the first electrode terminal, a second projecting electrode formed on the second electrode terminal, and a solder portion that joins the first projecting electrode to the second projecting electrode, each of the first projecting electrodes has an end face larger in area than an end face of the second projecting electrode, at least a part of the second electrode terminals exposed from the circuit board has an area larger than an area of a bottom of the second projecting electrode, and the second electrode terminal located in a region corresponding to an outer end of the electronic component is exposed from the circuit board so as to have a smaller exposed area than the second electrode terminal located in a region corresponding to a center of the electronic component.