Organic light emitting display and method of driving the same

摘要

There is provided a method of driving an organic light emitting display capable of displaying an image with uniform brightness. The method includes storing a brightness characteristic corresponding to emission time of an organic light emitting diode (OLED), adding first data supplied in units of frames by pixels to generate accumulated data, extracting accumulated data of a pixel to which currently supplied first data is to be supplied and calculating maximum brightness corresponding to emission time of the extracted accumulated data, calculating maximum brightness corresponding to emission time of largest accumulated data among the accumulated data, controlling a bit value of the first data using maximum brightness of a pixel to which the first data is to be supplied and maximum brightness of the largest accumulated data to generate second data, and controlling a voltage value of a first power source supplied to the pixels in response to the maximum brightness of the largest accumulated data.

主权项

1. A method of driving an organic light emitting display, comprising:
storing a brightness characteristic corresponding to emission time of an organic light emitting diode (OLED); generating accumulated data by adding together first data supplied in units of frames to each of a plurality of pixels, the accumulated data for each of the pixels corresponding to an emission time of the respective one of the plurality of pixels; determining a maximum brightness of a selected one of the pixels to which current first data is to be supplied based on the accumulated data corresponding to the selected pixel and the stored brightness characteristic; determining a maximum brightness corresponding to an emission time of a largest of the accumulated data among the accumulated data for each of the pixels; generating second data by controlling a bit value of the current first data using the maximum brightness of the selected pixel to which the current first data is to be supplied and the maximum brightness of the largest accumulated data, wherein controlling the bit value includes supplying fewer gray scales to least deteriorated pixels; and controlling a voltage value of a first power source supplied to the plurality of pixels, controlling including increasing the voltage value of the first power source in response to the maximum brightness of the largest accumulated data such that the pixel having the largest accumulated data has a brightness of up to an initial brightness thereof.