Patent ID: 7845954

Claim:
An interconnecting board to be interposed between a first circuit board and a second circuit board comprising: an interconnecting board main body to be interposed between a first circuit board and a second circuit board; and circuit board connecting wiring formed in association with electric connection points so as to extend from a first circuit board-side surface of the interconnecting board main body to a second circuit board-side surface of the interconnecting board main body, wherein a recessed portion is formed in at least one of a corner portion extending continuously from a top surface to a side surface portion of the interconnecting board main body and a corner portion extending continuously from a bottom surface to the side surface portion of the interconnecting board main body, the circuit board connecting wiring is formed along the recessed portion, a corner portion processing material is filled into the recessed portion, and a corner portion of the circuit board connecting wiring is buried in the corner portion processing material.