Scanning electrode circuitous wires are disposed in an area in the vicinity of a left side of a rectangular substrate; data electrode connecting wires, which serve to supply a signal to data electrodes from outside an organic EL display device, are disposed between the data electrodes and an upper side of the rectangular substrate; and scanning electrode connecting wires, which serve to supply a signal to scanning electrodes from outside the organic EL display device, are disposed between the scanning electrodes and a right side of the rectangular substrate.