| 摘要 |
PURPOSE:To ensure both of high contrast ration and high speed response characteristics by adding an optically active substance to nematic crystals high in anisotropy of refractive index. CONSTITUTION:Transparent electrode is formed on the inside of each of glass base plates 2, 4, and subjected to a rubbing treatment, and nematic crystals 6 are filled in the inside enclosed with said plates 2, 4 and sealants 3, 3 and sealed up. Polarizing plates 1, 5 are arranged in a parall Nicol state on each outside of this liquid crystal device. The orientations of the liquid crystals on the rubbing-treated faces are rectangular to each other. As these nematic liquid crystals 6, e.g., phenylcyclohexane type liquid crystals A low in viscosity and low in refractive index anisotropy, and biphenylpyridine type liquid crystals high in said anisotropy and viscosity, are used, and an optically active substance, such as cholesteric liquid crystals, in an amt. of 1.0-2.0wt% are added to both crystals A, B. |
