Liquid crystal apparatus
First Claim
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1. A display apparatus, comprising:
- a display panel comprising scanning electrodes and data electrodes intersecting the scanning electrodes so as to form a pixel at each intersection of the scanning electrodes and data electrode;
a scanning electrode drive circuit including an address decoder and a scanning electrode driver; and
a data electrode drive circuit including a shift register, a line memory and a data electrode driver, wherein;
said address decoder is operated to divide one frame into a plurality of fields including a field wherein a prescribed number of mutually non-adjacent scanning electrodes are selected, and another field wherein a prescribed number of mutually non-adjacent scanning electrodes, selected from and constituting at least a portion of the remaining scanning electrodes, are selected,said scanning electrode driver is operated to supply a scanning selection signal comprising a unipolar first pulse and a unipolar second pulse having a polarity opposite to that of, and a pulse width shorter than, that of the first pulse within a selection period for one scanning electrode, andsaid data electrode driver is operated to supply data signals comprising a third pulse of one polarity, and fourth and fifth pulses each of the opposite polarity placed before and after the third pulse and each having a pulse width shorter than the third pulse in the selection period, so that pixels on a selected scanning electrode are once uniformly reset into either a bright or a dark state and then placed in display states which are determined depending on whether the reset bright or dark state is retained or inverted, all within the selection period.
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Abstract
A liquid crystal apparatus comprises a) a liquid crystal device comprising an electrode matrix composed of scanning electrodes and data electrodes, and a ferroelectric liquid crystal; and b) a driving means. The driving means includes a first drive means for applying a scanning selection signal two or more scanning electrodes apart in one vertical scanning so at to effect in one picture scanning in plural times of vertical scanning, and a second drive means for applying data signals in synchronism with the scanning selection signal.
14 Citations
5 Claims
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1. A display apparatus, comprising:
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a display panel comprising scanning electrodes and data electrodes intersecting the scanning electrodes so as to form a pixel at each intersection of the scanning electrodes and data electrode; a scanning electrode drive circuit including an address decoder and a scanning electrode driver; and a data electrode drive circuit including a shift register, a line memory and a data electrode driver, wherein; said address decoder is operated to divide one frame into a plurality of fields including a field wherein a prescribed number of mutually non-adjacent scanning electrodes are selected, and another field wherein a prescribed number of mutually non-adjacent scanning electrodes, selected from and constituting at least a portion of the remaining scanning electrodes, are selected, said scanning electrode driver is operated to supply a scanning selection signal comprising a unipolar first pulse and a unipolar second pulse having a polarity opposite to that of, and a pulse width shorter than, that of the first pulse within a selection period for one scanning electrode, and said data electrode driver is operated to supply data signals comprising a third pulse of one polarity, and fourth and fifth pulses each of the opposite polarity placed before and after the third pulse and each having a pulse width shorter than the third pulse in the selection period, so that pixels on a selected scanning electrode are once uniformly reset into either a bright or a dark state and then placed in display states which are determined depending on whether the reset bright or dark state is retained or inverted, all within the selection period. - View Dependent Claims (2, 3, 4, 5)
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Specification