| 摘要 |
An antiferroelectric liquid crystal display device provided with means for preventing optical transmittance or the mean value of the optical transmittance from changing in a holding period tk. Thereby, the black display state thereof is stabilized. Further, the control of a gray shades display is facilitated. Moreover, linear gray scale characteristics and high contrast are provided. Thus, in the antiferroelectric liquid crystal display device having a selection period tw and the holding period tk, the optimum holding voltage (Vh), by which the optical transmittance little changes in the holding period tk, is applied to liquid crystals.
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