Patent ID: 8400387

Claim:
A liquid crystal display device comprising a liquid crystal panel with a memory effect including a liquid crystal having a memory effect having at least bistable states sandwiched between a pair of substrates having scanning electrodes and signal electrodes on opposed surfaces respectively, portions thereof where said scanning electrodes are opposed to said signal electrodes with said liquid crystal intervening therebetween forming pixels; and a driving circuit for driving said liquid crystal panel with a memory effect to cause said pixels to display image data, wherein said driving circuit applies, to said scanning electrode of said liquid crystal panel with a memory effect, a scanning voltage in a voltage waveform composed of a voltage value 0V and only one of a positive or negative unipolar voltage value consistently across a plurality of scanning periods, and also, to said signal electrode, a signal voltage in a voltage waveform composed of a voltage value 0V and a unipolar voltage value having the same polarity as the polarity of the scanning voltage consistently across a plurality of scanning periods, wherein the image data displayed at said pixel is displayed during a plurality of scanning periods, and the voltage applied between said scanning electrode and said signal electrode at a portion forming said pixel is made alternation in the plural scanning periods, and wherein one scanning period of the plural scanning periods has a selection period for applying a selection pulse between said electrodes to cause said pixel to display, a scanning period placed before said scanning period having the selection period has a reset period for applying a reset pulse between said electrodes to reset a state of said pixel before said selection period, and a scanning period placed before said scanning period having the reset period has a correction period for applying a correction pulse for the alternation.