Patent ID: 7920109

Claim:
An emission driving device of an organic light emitting display device, the emission driving device comprising: a first line controller having a first plurality of flip-flops of a plurality of flip-flops for applying first emission control signals of a plurality of emission control signals to a first plurality of emission control lines; and a second line controller having a second plurality of flip-flops of the plurality of flip-flops for applying second emission control signals of the plurality of emission control signals to a second plurality of emission control lines, wherein each flip-flop of the plurality of flip-flops includes: an input portion adapted to receive an input signal, and output an output signal at a level in response to a control signal and an inverted control signal; a first inverter adapted to invert the output signal of the input portion and output the inverted output signal of the input portion as an output signal of the first inverter; a second inverter adapted to invert the output signal of the first inverter in response to the output signal of the first inverter and output this inverted output signal of the first inverter as an output signal of the second inverter; and an output portion adapted to invert the output signal of the second inverter in response to the output signal of the second inverter and output a respective one of the emission control signals, wherein the input portion comprises: a first transistor electrically connected between a first power supply voltage line and a first node, and adapted to be switched according to a level of the control signal applied to a gate terminal of the first transistor; a second transistor electrically connected between the first node and a line of the inverted control signal, and adapted to be switched according to a level of a second node connected to a gate terminal of the second transistor; and a third transistor having a first electrode connected to the second node, and adapted to transmit or cut off the input signal applied to a second electrode according to the level of the control signal applied to a gate terminal of the third transistor, and wherein the first inverter comprises: a fourth transistor electrically connected between the first power supply voltage line and a third node, having a gate terminal connected to the first node of the input portion, and adapted to be switched according to a level of the first node; and a fifth transistor electrically connected between a second power supply voltage line and the third node, having a gate terminal connected to the gate terminal of the first transistor, and adapted to be switched according to the level of the control signal.