LAMINATED PRINTED BOARD COMPRISING CIRCUIT FOR DETECTING INTER-LAYER DISLOCATION

摘要

PROBLEM TO BE SOLVED: To provide a printed board capable of appropriately and efficiently detecting the dislocation of layer circuits of a laminated printed board. SOLUTION: The printed board where a plurality of layers of circuit patterns are laminated is provided. At a position where a through hole or a via hole of the circuit pattern of the layer is provided, a plurality of conductive parts insulated each other are provided around an isotropic blank where a central part has a diameter smaller than the that of the though hole on the via hole within dislocation tolerance.