Organic light-emitting display device

An organic light-emitting display device which divides each frame into a plurality of sub-frames and represents gray levels based on a sum of lengths of one or more of the plurality of sub-frames during which light is emitted, the organic light-emitting display device comprising:

• a display unit comprising a plurality of pixels arranged in a matrix;
• a scan driver configured to provide a scan signal to the display unit during each sub-frame period;
• and
• a precharge voltage unit configured to provide a precharge voltage to the pixels,
• wherein the pixels are divided into a first pixel column block comprising a pixel configured to receive the scan signal before other pixels receive the scan signal, and a second pixel column block next to the first pixel column block in a direction of an application of the scan signal, the precharge voltage comprising a first precharge voltage configured to be provided to the first pixel column block and a second precharge voltage configured to be provided to the second pixel column block, and the first precharge voltage is higher than the second precharge voltage.

An organic light-emitting display device which divides each frame into a plurality of sub-frames and represents gray levels based on a sum of lengths of one or more of the plurality of sub-frames during which light is emitted, the organic light-emitting display device comprising:

• a display unit comprising a plurality of pixels arranged in a matrix, each pixel of the pixels comprising an organic light-emitting element and a driving transistor configured to drive the organic light-emitting element;
• a scan driver configured to provide a scan signal to the display unit during each sub-frame period;
• and
• a data driver configured to provide an ON voltage to turn on the driving transistor,
• wherein the pixels are divided into a first pixel column block comprising a pixel configured to receive the scan signal before other pixels receive the scan signal, and a second pixel column block next to the first pixel column block in a direction of an application of the scan, the data driver configured to provide a first ON voltage with a first voltage level to the first pixel column block and a second ON voltage with a second voltage level, which is lower than the first level, to the second pixel column block.