ORGANIC LIGHT EMITTING DISPLAY AND METHOD FOR DRIVING THE SAME

摘要

A method for driving an organic light emitting display according to an embodiment includes applying an initial value of a high potential driving power and a test pattern to a display panel and sensing changes in driving characteristics of the display panel while varying a voltage level of the high potential driving power from the initial value, deciding whether or not a sensed driving characteristic value of the display panel satisfies a predetermined condition, setting a voltage level of the high potential driving power obtained when the sensed driving characteristic value satisfies the predetermined condition, as a reference value of the high potential driving power, and adding a voltage margin to the reference value of the high potential driving power to determine a final value of the high potential driving power, and driving the display panel using the final value of the high potential driving power.

主权项

1. A method for driving an organic light emitting display comprising:
applying an initial value of a high potential driving power and a test pattern to a display panel and sensing changes in driving characteristics of the display panel while varying a voltage level of the high potential driving power from the initial value; deciding whether or not a sensed driving characteristic value of the display panel satisfies a predetermined condition, setting a voltage level of the high potential driving power obtained when the sensed driving characteristic value satisfies the predetermined condition, as a reference value of the high potential driving power, and adding a voltage margin to the reference value of the high potential driving power to determine a final value of the high potential driving power; and driving the display panel using the final value of the high potential driving power, wherein the predetermined condition indicates a condition that causes the sensed driving characteristic value to exist in an active region in a driving thin film transistor (TFT) drain-source voltage (Vds)-drain-source current (Ids) plane of a display panel driving operation, and the final value of the high potential driving power is less than the initial value of the high potential driving power in a saturation region in the driving TFT Vds-Ids plane of the display panel driving operation following the active region.