The compensation principle to reduce the off-axis light leakage of crossed polarizers is investigated.After optimizing the retardation films, the simulation results show that the black state of viewing angle of compensated TN and VA modes can be made wider than the angle of view of crossed polarizers. The results are also confirmed by the test cells.

Very recently, a novel homeotropic nematic liquid crystal display (LCD) with excellent grayscale performance has been introduced. This rub-free mode adopts the homeotropic alignment in the off-state and switching is controlled by an in-plane field. It has electrically-induced dual domain-like director configuration. In this work, we simulate the electro-optical behavior of this device to optimize its performance. We investigate the dependence of electro-optical performance on cell thickness and electrode gap distance. The angular dependence is also studied, which shows the effect of self-compensation. The viewing angle characteristics are investigated in terms of transmission, contrast, gray scale, and chromaticity. We find from modeling that the director configuration above the electrodes is well behaved and masking of the electrodes is unnecessary. In fact, this homeotropic mode has better performance if the electrodes are unmasked.

Very recently, a novel homeotropic nematic LCD with excellent grayscale performance has been introduced. This rub-free mode adopts the homeotropic alignment in the off-state and switching is controlled by an in-plane field. It has electrically-induced dual domain-like director configuration. In this work, we simulate the electro-optical behavior of this device to optimize its performance. We investigate the dependence of electro-optical performance on cell thickness and electrode gap distance. The angular dependence is also studied, which shows the effect of self-compensation. We find from modeling that the director configuration above the electrodes is well behaved and masking of the electrodes is unnecessary. In fact, this homeotropic mode has better performance if the electrodes are unmasked.