The widespread use and application of in-plane switching liquid crystal displays(IPS-LCDs) is limited by their slow response.In this letter,a fast-response IPS-LCD with a protrusion structure is proposed.The gray-to-gray response time of the IPS-LCD is reduced by 20% to 30%.The difference in cell gap induced by the protrusion accounts for the faster response.Moreover,the viewing angle and gamma shift of the proposed IPS-LCD are simulated and found to be better than that of conventional IPS-LCDs.
We present a theoretical calculation of the dependence of reflectivity Rpp of the improved fully leaky waveguide geometry,which comprises pyramid,matching fluid,and strongly anchored hybrid aligned nematic liquid crystal(NLC) cell on the internal angle.The calculation is based on the multi layer optical theory and the elastic theory of liquid crystals.For different sums of flexoelectric coefficients e11 and e33,the curve of Rpp moves a distance to the left or the right relative to the case of ignoring the flexoelectric effect and the distance of the movement varies with different flexoelectric coefficients.Consequently,the sum of flexoelectric coefficients can be explored by measuring the distance of the movement.
A homogeneous-aligned, high-transmission, and fast-response liquid crystal display (LCD) with three-layer electrodes is proposed. The molecules of liquid crystals are more inclined to rotate above and between the pixel electrodes. This induces a much higher transmission than that of the cell driven by the fringe field switching method and a wide viewing angle simultaneously because of the combined fringe and in-plane electric fields. Furthermore, a trigger pulse voltage is applied between the top and common electrodes to forcibly align the liquid crystal molecules vertically to show the transient dark state, which results in a very fast turn-off time (～1 ms). With high degree of transmission and fast response time, this kind of LCD is a potential candidate for large LCD panels.
