Scan driver and organic light emitting display using the same

An object of the present invention to a scanning signal in both directions provides an output as possible scan driver and organic light emitting display device using the same. The present invention includes a plurality of stages to output a scan signal, n-1-th stage is a first direction control signal and a second latched signal and the n-th stage output from the n-2-th stage by the direction control signal the transmission gate section for selecting and outputting one of the second latch signal of the second latch signals output from; A single control signal and the n-th stage and outputs the selected second latch signal to the first latch signal and the second latched signal using, as the n-2-th stage to the second latched signal of the plurality of control signals a latch unit for transmission; And to receiving one of the control signals of the plurality of control signals provided to the first latch signal and the operation by using an organic light emitting scan driver and his comprising an output buffer for outputting a scanning signal display device.