Patent ID: 7656372

Claim:
A method for driving a liquid crystal display device comprising: a pixel region in which a pixel comprising a switching element, a pixel electrode, and a liquid crystal is arranged at each intersection point in matrix between a plurality of scanning lines arranged in parallel in a horizontal direction and a plurality of signal lines arranged in parallel in a vertical direction, wherein the pixel region comprises a display pixel region used for displaying an image and a dummy pixel region arranged around an outer periphery of the display pixel region, the dummy pixel region comprising a dummy pixel entirely covered by a shield film and having no aperture, the method comprising the step of: applying an optimum voltage, which is lower than an upper-limit voltage value by which a reverse twisted domain is generated and higher than a lower-limit voltage value by which a light leakage is generated in a boundary area located between the display pixel region and the dummy pixel region, to liquid crystals of at least a part of the dummy pixel region.