Electro‐optical Performance of a Vertically‐Aligned LCD Mode Using Electrically Controlled Self‐Compensation

Abstract

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.

48.2: Advanced VA Mode with Fast Gray Scale Response and Wide Viewing Angle in a Bend Liquid Crystal Configuration

“…They require high contrast ratio, wide viewing angle, and fast response simultaneously with low cost. To widen the viewing angle, many LCD modes have been proposed, such as In-Plane-Switching (IPS) and Vertical Alignment -IPS (VA-IPS) [1,2]. However, IPS mode has insufficient contrast ratio.…”

Reduction of interferometric crosstalk induced penalty using a saturated semiconductor optical amplifier

“…Strong requirements on crosstalk are imposed to the components used in largescale transparent optical networks. [ 1,2] Components with low crosstalk are important, but other effective techniques to suppress the impact of crosstalk are also needed. Several techniques can be used for this purpose, e.g., using a gain saturated laser diode amplifier [3], wavelength conversion based on cross-phase-modulation [4] or cross-gain-modulation [5,6] in semiconductor optical amplifiers (SOA).…”