Data driver and light emitting diode display device including the same

摘要

A data driver and a light emitting diode display device including the circuit that cause a pixel current through the light emitting diode to be independent of the threshold voltage of a transistor driving the light emitting diode. The data driver includes a voltage digital-analog converter for generating a data voltage and a current digital-analog converter for generating a sensing current, both corresponding to input data, and a voltage control block for receiving the pixel current that corresponds to the data voltage and is fed back from the pixel to the voltage control block changing the amount of current charging a capacitor in the voltage control block and controlling the data voltage supplied to the pixel. Controlling and adjusting the data voltage helps uniformity in the display brightness regardless of non-uniformity of transistors in each pixel.