Display device and method for driving the same

A method for driving a display device, the method comprising:

• outputting, by a timing controller, image data;
• receiving, by a data driver, the image data from the timing controller to divide the received image data into first image data and second image data;
• alternately outputting, by the data driver, the first image data and the second image data;
• receiving, by a switching circuit, the first image data and the second image data from the data driver, to supply the first image data to sub-pixels of a first group in a display panel, and to supply the second image data to sub-pixels of a second group in the panel;
• identifying, by the timing controller, that a lock fail of a clock signal has occurred in the data driver upon receiving a first control signal from the data driver while transmitting the image data for one frame;
• upon identifying the lock fail by the timing controller, interrupting transmission of the image data and transmitting a clock training signal to the data driver to lock the clock signal;
• and
• resuming, by the timing controller, transmission of the image data when lock of the clock signal is completed, and transmitting to the data driver an identification signal for identifying a transmission time point of the first image data.