Patent ID: 7468720

Claim:
A liquid crystal display device, comprising: a liquid crystal display panel having thin film transistors provided on a substrate at crossings between gate lines and data lines and connected in a zigzag pattern based on the gate lines, pixel electrodes connected to the thin film transistors, common electrodes making a horizontal electric field with the pixel electrodes, and common lines connected to the common electrodes and arranged parallel to the gate lines; a gate driver applying scanning pulse signals to the gate lines of the liquid crystal display panel; a data driver applying pixel voltage signals to the data lines of the liquid crystal display panel; and a common driver applying alternating current common voltage signals to the common lines of the liquid crystal display panel, wherein the gate driver and the common driver are integrated on the substrate and are simultaneously formed with the thin film transistors; and wherein the alternating current common voltage signals are inverted prior to the scanning pulse signals, and wherein the common driver includes: a first shift register for sequentially generating a first common voltage signal; a second shift register for sequentially generating a second common voltage signal; a level shifter for shifting swing widths of said first and second common voltage signals to a predetermined level; and a buffer for applying a voltage output from the level shifter to the gate lines.