Patent ID: 7623097
Filing Date: 2009-11-24
Classification: G09G,G11C

Abstract:
1. An organic light emitting display (OLED) device, comprising: a pixel portion having a plurality of pixels to display an image; a scan driver to apply a scan signal to sequentially select the pixels; a data driver to apply a data signal to the pixels that are selected by the scan signal; and an emission control driver to apply an emission signal to control an emission operation of the pixels, wherein the emission control driver comprises: a shift register including a plurality of flip-flops, wherein the first flip-flop receives a start pulse and the rest of the flip-flops receives an output signal of a previous flip-flop and generate an output signal in synchronization with a clock signal and an inverted clock signal; and a logical operation portion including a plurality of logic gates, wherein each of the logic gates receives first and second output signals and first and second inverted output signals from two adjacent flip-flops, controls an active load using the received output signals, and outputs an emission control signal through a logical OR operation on the first and second output and inverted output signals.