LIQUID CRYSTAL DISPLAY DEVICE, CAPABLE OF IMPROVING SHIFT PHENOMENON OF COMMON VOLTAGE ACCORDING TO THE DRIVING METHOD OF A LIQUID CRYSTAL DISPLAY

摘要

PURPOSE: A liquid crystal display device is provided to improve the quality distortion of image due to instability of common voltage and greenish effect.;CONSTITUTION: A liquid crystal display comprises an LCD panel(210), a driving circuit board(220), source driving unit(SD1~SD4), gate driving units(GD1~GD3), and a common voltage delivery wiring. The LCD panel has a plurality of liquid crystal pixels equipped with a thin film transistor and common electrode, and the image display region and non-display area are defined. The driving circuit board produces video data and common voltage, and accommodates a plurality of the driver circuits. The source driving unit outputs video data delivered from the driving circuit board on the LCD panel, and supplies the common voltage inputted from the driving circuit board to the LCD panel. The gate driving unit outputs the gate driving signal for controlling the switching of the thin film transistor to the liquid crystal pixel, and outputs the common voltage from the source driving unit to the common electrode. The common voltage delivery wiring is formed between gate driving unit and a source driving unit, and supplies the common voltage from the source driver to gate driving unit.;COPYRIGHT KIPO 2010