Patent ID: 8462095

Claim:
A driving unit comprising: a timing controller which outputs image data, a data control signal, a gate control signal, and a switching signal; a data driver comprising: a data processor which converts the image data into a data voltage based on the data control signal; and a switching circuit which receives the data voltage and a common voltage having a predetermined period and outputs at least one of the common voltage and the data voltage in response to the switching signal, the switching circuit comprises a second switching device which provides the common voltage to an output terminal of the data driver based on a second switching signal of the switching signal; and a gate driver which outputs a gate voltage in response to the gate control signal, wherein the timing controller activates the switching signal to a first state at a time point in a first half period of a transition period of the common voltage, and the switching circuit outputs the common voltage when the switching signal is activated to the first state, wherein the switching signal generating unit comprises: an inverter which inverts a first image data corresponding to a present data line of the timing controller to output a second image data; a comparator which compares a voltage level of the second image data with a voltage level of the common voltage and outputs a comparison signal at a time point when the voltage level of the common voltage corresponds to the voltage level of the second image data in the transition period of the common voltage; and a signal generator which provides the second switching signal to the second switching device based on the comparison signal.