Patent ID: 7592985

Claim:
A driving apparatus for an organic electro-luminescence display device, comprising: an organic light-emitting diode device having an anode and a cathode; data voltage source configured to supply a data voltage to the anode of the organic light-emitting diode device; a first voltage source configured to generate a first voltage; a second voltage source configured to generate a second voltage higher than said first voltage; voltage stabilizing means connected to the second voltage source and configured to stabilize said second voltage to be supplied to the cathode of the organic light-emitting diode; and first and second switching devices configured to selectively apply said first and second voltages to a cathode of the organic light-emitting diode device, wherein the voltage stabilizing means is a Zener diode device, and the Zener diode device is connected, in series, between the second voltage source and the cathode of the organic light-emitting diode device, and wherein a breakdown voltage of the Zener diode device is lower than a threshold voltage of the organic light-emitting diode device.