| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal display element capable of selectively reflecting light having comparatively long wavelength and having high respose speed, reduced driving voltage, brightness and excellent heat resistance stability and to provide a laminated liquid crystal display element. SOLUTION: The liquid crystal display element is provided with a chiral nematic liquid crystal composition containing at least a nematic liquid crystal mixture and a chiral material, showing a cholesteric phase at room temperature, capable of selectively reflecting light having 580 to 690 nm peak wavelength and having 20 to 50 cP viscosity, dielectric anisotropy (Δε) of 10 to 30, refractive index anisotropy (Δn) of 0.13 to 0.20 and 75 to 100°C isotropic phase transition temperature and a pair of substrates with electrodes which sandwich the liquid crystal composition and at least one of which is transparent. The laminated liquid crystal display element is formed by using the liquid crystal display element. COPYRIGHT: (C)2004,JPO
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