Patent ID: 9601058
Date: 2017-03-21
CPC Classifications: G09G

Claim:
1. An organic light emitting diode display device comprising: a display panel configured with pixels which each include an organic light emitting diode and a driving transistor applying a driving current to the organic light emitting diode; data lines configured to provide data signals to the display panel in a display mode; a data driver configured to apply a sensing voltage to the pixels through the data lines in a sensing mode and enable a sensing current to flow through each of driving transistors of the pixels; and a brightness compensation circuit configured to derive negatively shifted degrees of threshold voltages of the driving transistors from sensed threshold voltages corresponding to the driving currents which flow through the driving transistors, detect a bright-defected pixel on a basis of the negatively shifted degrees, and generate a compensation gray value for the bright-defected pixel.