Patent ID: 8188947

Claim:
An organic light emitting display device comprising: a plurality of pixels respectively positioned at pixel regions arranged into rows, each of the pixel regions being located at a crossing region of a corresponding one of scan lines and a corresponding one of data lines, each of the pixels comprising an organic light emitting diode and a pixel circuit for driving the organic light emitting diode, wherein the pixel circuit of one of the pixels positioned at a corresponding one of the pixel regions on a current row from among the rows of the pixel regions, comprises: a first transistor for transferring a data signal supplied from the corresponding one of the data lines according to a current scan signal supplied to a current scan line from among the scan lines; a second transistor for controlling an amount of current corresponding to the data signal that flows from a first pixel power supply to the organic light emitting diode; a third transistor for diode-connecting the second transistor according to the current scan signal; a storage capacitor for maintaining a gate voltage of the second transistor in accordance with the data signal; and a fourth transistor for initializing a first node to which a gate electrode of the second transistor is coupled according to a previous scan signal supplied before the current scan signal is supplied, the fourth transistor being located at the pixel region of a previous row pixel of the pixels on a previous row from among the rows of the pixel regions, in which a portion of a previous scan line from among the scan lines is located, the previous row being offset from the current row in a direction perpendicular to a direction in which the scan lines extend, wherein the fourth transistor of each of the pixels in second to n th rows of the pixel regions is configured to initialize the first node with a voltage at an electrode of the organic light emitting diode of the previous row pixel.