| 摘要 |
The present invention provides an organic light emitting display comprising: a display panel including pixels including a driving transistor and an organic light emitting diode; a data driving part converting digital data into data voltage to supply the data voltage to each pixel; and a timing controller which calculates a compensation value by pixels, used for compensating for the mobility variations based on sensing voltage corresponding to mobility of the driving transistor detected from the pixels, corrects data transmission efficiency for data voltage in consideration of initialization voltage supplied to a sensing node between the driving transistor and the organic light emitting diode, and supplies compensation digital data where the mobility variations of the pixels are compensated from digital data to be inputted to each pixel using the calculated compensation value by pixels and the corrected data transmission efficiency for the data voltage, to the data driving part. The purpose of the present invention is to provide an organic light emitting display to accurately compensate for the mobility variations of pixels while preventing excessive compensation in a low gradation region. |
