| 摘要 |
PURPOSE: An organic light emitting diode display device for measuring pixel current and a pixel current measuring method thereof are provided to compensate brightness deviation between pixels by measuring the current of each pixel in a high speed with a simple structure. CONSTITUTION: A display panel(20) includes a pixel array. A data driver(10) operates a data line. A digital to analog converter(DAC)(12) is connected to an output channel by channels. A sampling and holding(S/H) circuit(14) is connected to the output channel by channels. A first switch(SW1) is connected between the digital to analog converter and the output channel by channels. A second switch(SW2) is connected between the output channel and the sampling and holding circuit by channels. A capacitor(Ch) is connected to the input terminal of the sampling and holding circuit by channels in parallel.
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