| 摘要 |
A method for driving a cholesteric liquid crystal display device in a fast rewriting speed and with a low electric power consumption resets the entire display area to a homeotropic oriented state by selecting all the common electrodes. It applies the common reset signals to all the common electrodes and the data reset signals to all the segment electrodes. Subsequently, the drive voltage waveform consisting of a common select signal and common hold signal is applied to respective common electrodes. The common select signal is applied for a while after the common select signal is applied to the last common electrode. The voltage waveforms applied to the common electrode and segment electrode consist of two levels of voltage, i.e., 0 volts and non-new voltage. The percentage that the non-new voltage is applied to both common electrode and segment electrode is made to the lowest level.
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