专利名称：LIQUID CRYSTAL DEVICE AND METHOD FOR
DRIVING THE SAME
发明人：KONDOH, Shinya, Citizen Watch Co.,
Ltd.,TAKAHASHI, Rintarou, Citizen Watch Co.,Ltd.
申请号：EP98955945.5申请日：19981126公开号：EP0959380B1公开日：20090527
摘要：A liquid crystal apparatus is provided which incorporates a means for
automatically obtaining an optimum drive voltage value for a liquid crystal panel. Drivevoltages are applied through a voltage value adjusting circuit (18) to scanning electrodes(17) and signal electrodes (16) provided in the liquid crystal panel (15), and a display isproduced on the liquid crystal panel in accordance with the applied drive voltagewaveforms. A display capture device (20), which comprises a CCD device (13) and a lens(14), captures an optimum display image from the liquid crystal panel and stores it in areference memory (10). Further, the display capture device (20) captures a displayproduced on the liquid crystal panel and stores it in a capture memory (11). A displaydata difference circuit (12) compares the data stored in the capture memory (11) with thedata stored in the reference memory (10) to determine whether they coincide or not and,based on the result of the comparison, an optimum voltage setting CPU (19) controls thevoltage value adjusting circuit (18).
申请人：CITIZEN HOLDINGS CO LTD
地址：JP
国籍：JP
代理机构：Patentanwälte Ruff, Wilhelm, Beier, Dauster & Partner
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