Display device, driving method thereof and display driver therefor

A display, comprising:

• a plurality of scan lines;
• a plurality of drive lines;
• a plurality of pixels at an intersection of corresponding scan and data lines;
• and
• a driver, the driver including
• a scan driver adapted to supply scan signals serially to scan lines of the display,
• a data driver adapted to supply a first data signal and a second data signal to data lines of the display,
• a timing controller adapted to control the scan driver and the data driver in accordance with a main clock, and to supply external data to the data driver, and
• a vertical synchronizing signal synchronizing circuit adapted to synchronize an internal vertical synchronizing signal and an external vertical synchronizing signal,
• wherein the vertical synchronizing signal synchronizing circuit includes:
• a first stage adapted to receive the external vertical synchronizing signal and to output a halved external vertical synchronizing signal,
• a second stage adapted to receive the internal vertical synchronizing signal and a halved internal vertical synchronizing signal from the timing controller, and to output a shifted halved internal vertical synchronizing signal,
• a third stage adapted to determine a phase difference between the halved external vertical synchronizing signal and the shifted halved internal vertical synchronizing signal, and
• a fourth stage adapted to control a frequency of the main clock in accordance with the phase difference and to feedback the controlled main clock to the timing controller.