Liquid crystal display device performing dot inversion and method of driving the same
OwnerTakeshi Okunoinventor
Life of this patent
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Abstract
An LCD device for performing a dot inversion and a method of driving the same. A storage line is provided separately from a common electrode line so that a level of a storage voltage applied through the storage line can be shifted once per frame. As the storage voltage is shifted using the storage line, the polarity of a voltage applied to a pixel electrode of a liquid crystal is inverted. One such storage line is provided per line of the pixels and storage capacitors of the pixels disposed above and below the storage line are alternately connected to the storage line.
Claims16
A liquid crystal display (LCD) device comprising:
- a pixel for displaying an image;
- a scan line for supplying a scan signal to the pixel;
- a data line crossing the scan line and for supplying a data signal to the pixel;
- a common electrode line for supplying a common voltage to the pixel;
- and
- a storage line disposed in parallel with the scan line and for performing a dot inversion.
A liquid crystal display (LCD) device comprising:
- a thin film transistor (TFT) having a gate connected to a scan line, a first electrode connected to a data line, and a second electrode adapted to receive a data signal applied to the data line through a channel;
- a liquid crystal disposed between a pixel electrode connected to the second electrode of the TFT and a common electrode of a common electrode line;
- and
- a storage capacitor connected between the second electrode of the TFT and a storage line, and for storing the data signal.
A method of driving a liquid crystal display (LCD) device, comprising:
- turning on a thin film transistor (TFT) and storing a first data voltage applied through a data line as a first pixel voltage in a storage capacitor;
- turning off the TFT and increasing the first pixel voltage according to a first storage voltage applied through a storage line provided separately from a common electrode line;
- turning on the TFT and storing a second data voltage applied through the data line as a second pixel voltage in the storage capacitor;
- and
- turning off the TFT and decreasing the second pixel voltage according to a second storage voltage applied through the storage line.
Dependencies are inferred from the claim text.