| 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. Drive voltages 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 is produced on the liquid crystal panel in accordance with the applied drive voltage waveforms. 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 a reference memory (10). Further, the display capture device (20) captures a display produced on the liquid crystal panel and stores it in a capture memory (11). A display data difference circuit (12) compares the data stored in the capture memory (11) with the data 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 the voltage value adjusting circuit (18).
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