Display device and driving method of the same

A driving method for driving a display device comprising an organic light-emitting diode, a first transistor supplying a data voltage, a second transistor electrically connected between one of the electrodes of the organic light emitting diode and a driving voltage supply line wherein the second transistor includes a first gate node and a second gate node, and one of a drain node and a source node thereof is electrically connected to the first transistor, a third transistor electrically connected between the other of the source node and the drain node and the first gate node of the second transistor, a fourth transistor electrically connected to the other of the source node and the drain node of the second transistor to apply a driving voltage, a fifth transistor electrically connecting the second transistor and the organic light emitting diode, a sixth transistor supplying a first initialization voltage to one of the source node and the drain node of the fifth transistor and one of the electrodes of the organic light emitting diode, a first storage capacitor electrically connected between the first gate node of the second transistor and one of the electrodes of the organic light emitting diode, a seventh transistor electrically connected to the second gate node of the second transistor, and a second storage capacitor electrically connected between the second gate node of the second transistor and the other of a source node and a drain node of the second transistor,

• diode-connecting between one of the source node and the drain node of the second transistor and the first gate node, and initializing one of the source node and the drain node of the second transistor and the first gate node to a driving voltage;
• turning the sixth and fifth transistors on to apply a first initialization voltage to the other of the source node and the drain node of the second transistor, and resetting the other of the source node and the drain node of the second transistor to the initialization voltage;
• in a state in which the third transistor is turned on to and one of the source node and the drain node of the second transistor and the first gate node are diode-connected, turning the first transistor on to apply a data voltage of the second transistor to the other one of the source node and the drain node;
• and
• emitting the organic light emitting diode by a driving current of the second transistor corresponding to the data voltage.