We report three liquid crystal (LC) mixtures with a wide nematic range (−40°C to ~100°C), small visco-elastic coefficient and low activation energy for vehicular displays. Physical properties at different temperatures were characterized. These LCs greatly improve the performance of different display devices in a car: 1) for head-up projection using liquid-crystal-onsilicon with an average gray-...

A bistable twisted nematic liquid crystal display based on dual frequency driving electronics has been demonstrated. By using special combinations of alignment layers and liquid crystals, bistability can be achieved readily with cell gaps as large as 5μm.

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Abstract— This work investigates the improvement of the active reflection coefficient of waveguide-fed phased-array antenna using liquid crystal layers. The anisotropy properties of liquid crystal layer can be employed to eliminate blind scan angle and improve the wide angle impedance matching of the waveguide-fed phased array antennas. The authors have expressed the modal analysis of the waveg...

We report here uniform and defect-free homeotropic alignment of nematic liquid crystal having negative dielectric anisotropy (Deo0) on cleaned substrates, which can be changed to bright state (homogeneous alignment) by applying an electric field. However, non-uniformity in the bright state would not be desirable for display devices. Therefore, silane treated and gently rubbed substrates have be...

1 All visual display system technologies have visual artifacts, or perceptual features that would not be present in a naturally-viewed scene. The characteristics of certain light-valve technologies, specifically Liquid Crystal Display (LCD) and Liquid Crystal on Silicon (LCoS), exhibit a blurring artifact with image motion. In this paper, the causes of this artifact will be reviewed. Current kn...