Abstract: The EL device driving device comprising a plurality of EL devices having two electrodes, a first EL driving IC having a plurality of output terminals connected to one electrodes of the plurality of EL devices and an input terminal, a second EL driving IC having a plurality of output terminals connected to the other electrodes of the plurality of EL devices and an input terminal, a first AC power supply for supplying an AC voltage of sinusoidal waveform, with one electrode being connected to the input terminal of the first EL driving IC, and a second AC power supply for supplying an AC voltage of sinusoidal waveform having the same waveform as the AC voltage supplied from the first AC supply, and shifted in phase 180 degrees, with one electrode being connected to the input terminal of the second EL driving IC.

Abstract: The EL device driving device comprising a plurality of EL devices (L1, L2, . . . , Ln) having two electrodes, a first EL driving IC (5) having a plurality of output terminals (B1, B2, . . . , Bn) connected to one electrodes of the plurality of EL devices and an input terminal (15), a second EL driving IC (6) having a plurality of output terminals (B1, B2, . . . , Bn) connected to the other electrodes of the plurality of EL devices and an input terminal (16), a first AC power supply (9) for supplying an AC voltage of sinusoidal waveform, with one electrode being connected to the input terminal (15) of the first EL driving IC (5), and a second AC power supply (10) for supplying an AC voltage of sinusoidal waveform having the same waveform as the AC voltage supplied from the first AC supply (9), and shifted in phase 180 degrees, with one electrode being connected to the input terminal (16) of the second EL driving IC (6).