Liquid crystal display and driving method thereof having precharging scheme

A liquid crystal display comprising:

• a liquid crystal panel assembly including a plurality of gate lines, a plurality of data lines, and a plurality of pixels connected to the gate lines and the data lines;
• a signal controller receiving image data, a vertical synchronization signal, a horizontal synchronization signal, and a data enable signal from an external device, generating control signals used for driving the liquid crystal panel assembly, counting the number of pulses of the horizontal synchronization signal from a pulse of the vertical synchronization signal to a subsequent pulse of the data enable signal, and generating a vertical synchronization start signal having a main-charging pulse in synchronization with the subsequent pulse of the data enable signal pulse and a precharging pulse before the main-charging pulse;
• a gate driver for activating the pixels based on the precharging pulse and the main-charging pulse;
• and
• a data driver receiving the image data from the signal controller and writing the image data on the activated pixels.