Patent ID: 7012814

Claim:
A circuit board connection structure comprising: a first circuit board and a second circuit board bonded together with a conductive resin layer, wherein the first circuit board has a first terminal region including a plurality of first terminal electrodes arranged in a first direction and a dummy electrode placed next to the first terminal region in the first direction, the second circuit board has a second terminal region including a plurality of second terminal electrodes arranged in the first direction, the second terminal region is placed to face the first terminal region via the conductive resin layer, the respective second terminal electrodes being electrically connected to the corresponding first terminal electrodes, and the conductive resin layer covers at least part of the dummy electrode, and the at least part of the dummy electrode covered with the conductive resin layer has a plurality of openings defined therein, and wherein said openings in the dummy electrode are laterally surrounded on all lateral sides by the dummy electrode, and the plurality of openings are arranged in the first direction and a second direction that is substantially perpendicular to the first direction.