| 摘要 |
A method for driving an optical modulation device of the type in which a group of scanning electrodes and a group of signal electrodes are so arranged that picture elements are defined at the intersections therebetween and a bistable optical modulation material assuming either one of two stable states depending an electrical field applied is interposed between the two groups of electrodes, comprising: a first phase in which the bistable optical modulation material at the picture elements on an N-th scanning electrode is oriented to one stable state, a second phase in which a writing signal is applied to the signal electrodes in synchronism with a scanning signal to the N-th scanning electrode and a third phase in which the bistable optical modulation material at the picture elements on an N+1-th scanning electrode is oriented to the one stable state. Also disclosed is another driving mode for an optical modulation device having scanning electrodes, signal electrodes and a bistable optical modulation material interposed between the scanning electrodes and the signal electrode, comprising a first step in which a scanning signal is applied to the whole or a part of the scanning electrodes while, in phase therewith, a signal is applied to the whole or a part of the signal electrodes so that the optical modulation material is oriented to a first stable state, and a second step in which a scanning signal is applied to the whole or a part of the scanning electrodes while in phase therewith, a signal is applied to a selected signal electrode among the whole or a part of the signal electrodes so that the bistable optical modulation material is oriented to a second stable state.
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