DATA DRIVING CIRCUIT AND DRIVING METHOD OF LIGHT EMITTING DISPLAY USING THE SAME

摘要

A data driving circuit, a light emitting display using the same, and a driving method thereof are provided to display a uniform image regardless of the electron mobility of a transistor by resetting gradation voltage values by using compensation voltage generated in sinking the current from a pixel and supplying the reset gradation voltage to the pixel with the sunk current. A data driving circuit(200) includes plural current sink units(2801~280j) for controlling to make predetermined current flow in each data line(D1~Dj); plural voltage generating units(2401~240j) for resetting voltage values of the gradation voltages by using compensation voltage generated in applying the predetermined current; plural DACs(Digital-to-Analog Converter,2501~250j) for selecting one of the gradation voltages as a data signal correspondingly to the bit value of the data supplied from the outside; and plural switching units(2901~290j) supplying the data signal to the data lines.