LIQUID CRYSTAL DISPLAY AND INVERSION DRIVING METHOD
A liquid crystal display (LCD) ensuring excellent display quality and reducing power consumption is disclosed. The liquid crystal display (LCD) includes first and second polarity image display pixels, such that a polarity inversion of data is executed by line, column, and dot, and the polarity inversion of a common voltage is executed by frame. An inversion driving method using the liquid crystal display (LCD) is also disclosed.
1 . A liquid crystal display (LCD), comprising:
one or more first polarity image display pixels, each comprising:
a first switching device configured to receive a first data voltage,
a first liquid crystal capacitor connected to an output terminal of the first switching device and to a first common electrode configured to receive a first common voltage, and
a first sustain capacitor coupled in parallel to the first liquid crystal capacitor and having an electrode connected to the first common electrode; and
one or more second polarity image display pixels, each comprising:
a second switching device configured to receive a second data voltage, wherein the polarity the first and second data voltages are opposite,
a second liquid crystal capacitor connected to an output terminal of the second switching device and to a second common electrode configured to receive a second common voltage, wherein the polarity the first and second common voltages are opposite, and
a second sustain capacitor coupled in parallel to the second liquid crystal capacitor and having an electrode connected to the second common electrode.
2 . The liquid crystal display (LCD) of claim 1 , wherein the polarity of the first and second common voltages is inverted each frame.
3 . The liquid crystal display (LCD) of claim 1 , wherein the first and second polarity image display pixels are arrayed on a liquid crystal panel and are configured to be driven with line inversion, column inversion, or dot inversion.
4 . The liquid crystal display (LCD) of claim 1 , wherein the first common electrode and the second common electrode are patterned to be engaged to each other with protrusion and depression shapes.
5 . An inversion driving method of a liquid crystal display (LCD), the method comprising:
applying a first data voltage to a first switching device of a first polarity image display pixel comprising the first switching device, a first liquid crystal capacitor connected to an output terminal of the first switching device and to a first common electrode configured to receive a first common voltage, and a first sustain capacitor coupled in parallel to the first liquid crystal capacitor;
applying the first common voltage to the first common electrode and to one electrode of the first sustain capacitor;
applying a second data voltage having a polarity opposite the polarity of the first data voltage to a second switching device of a second polarity image display pixel comprising the second switching device, a second liquid crystal capacitor connected to an output terminal of the second switching device and to a second common electrode configured to receive a second common voltage, and a second sustain capacitor coupled in parallel to the second liquid crystal capacitor; and
applying the second common voltage to the second common electrode and one electrode of the second sustain capacitor, wherein the second common voltage has a polarity opposite the polarity of the first common voltage.
6 . The inversion driving method of claim 5 , wherein the polarity of the first and second common voltages is inverted each frame.
7 . The inversion driving method of claim 5 , wherein the first and second polarity image display pixels are arrayed on a liquid crystal panel and are configured to be driven with line inversion, column inversion or dot inversion.
8 . The inversion driving method of claim 5 , wherein the first common electrode and the second common electrode are patterned to be engaged to each other with protrusion and depression shapes.