| 摘要 |
<p>PURPOSE:To attain the multigradation and high-speed display of a ferroelectric liquid crystal by using the electric field inducting tilt effect of a smectic A liquid crystal which itself has no memory effect and controlling the electric field inducting tilt by an active matrix. CONSTITUTION:The liquid crystal cell is basically constituted by inserting the liquid crystal 4 having a smectic A phase between the active matrix array 5 and a counter electrode 3. The liquid crystal cell is used by being held in place between a pair of polarizing plates 1 and 7 in case of using the cell with a double refraction mode. One of the polarizing plates can be removed in case of a GH mode added with a dichromatic dye to the smectic A liquid crystal. The voltaged to be impressed to the respective picture elements of such constitution, i.e. the tilt angles of the smectic A liquid crystal are controlled by electric fields and the electric field inducting tilt effect of the smectic A liquid crystal is applied to the active matrix, by which the video display having excellent high-speed response, high contrast, high visual field angle, and wide color reproducibility is attained.</p> |
