Organic light emitting display device including emission driver and driving method thereof

摘要

An organic light emitting display device includes: a display panel; a timing controller configured to receive image data when a vertical sync signal is activated, to receive reference data corresponding to the image data when the vertical sync signal is deactivated, and to generate an emission control signal in accordance with emission duty information of the reference data; and an emission driver configured to supply first and second emission powers to the display panel, and to control a duration of a period during which a potential difference between the first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal.

主权项

1. An organic light emitting display device comprising:
a display panel; a timing controller configured to receive a vertical sync signal, a horizontal sync signal, and input data signal, the input data signal comprising image data and reference data generated prior to the image data in a frame, and the timing controller configured to receive the image data when the vertical sync signal is activated, to receive the reference data corresponding to the image data when the vertical sync signal is deactivated, and to generate an emission control signal in accordance with emission duty information of the reference data, the emission control signal being configured to control an emission time of the frame; an emission driver configured to supply first and second emission powers to the entire display panel, and to control a duration of a period during which a potential difference between the first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal; and a data driver configured to apply a plurality of data output voltages to a plurality of data lines coupled to the display panel, wherein the reference data includes gray level information for corresponding image data and the emission duty information, wherein the emission duty information is determined independently of the gray level information, wherein the timing controller is configured to convert a gray level value of the image data to converted image data in accordance with the gray level information of the reference data, wherein the data output voltages correspond to the converted image data, and wherein the timing controller is configured to control a gray level range of the image data in accordance with the gray level information, and is configured to convert the gray level value of the image data in proportion to a control amount of the gray level range.