LIQUID-CRYSTAL COMPOSITION AND LIQUID-CRYSTAL DISPLAY ELEMENT OBTAINED USING SAME
申请人:DIC Corporation
公开号:EP3173457A1
公开(公告)日:2017-05-31
There is provided a liquid crystal composition containing at least one compound represented by General Formula (a). There is also provided a liquid crystal display device using such a liquid crystal composition. The liquid crystal composition of the present invention has the following properties without suffering reductions in refractive index anisotropy (Δn) and nematic phase-isotropic liquid phase transition temperature (Tni): sufficiently low viscosity (η), sufficiently low rotational viscosity (γ1), a large elastic constant (K33), a high voltage holding ratio after UV exposure (VHR (UV)), and a negative dielectric anisotropy (Δε) with a large absolute value. A liquid crystal display device of, for example, a VA type that uses such a liquid crystal composition has a high response speed and excellent display quality with defective display being eliminated or reduced.
本发明提供了一种液晶组合物,其中至少含有一种通式(a)所代表的化合物。还提供了一种使用这种液晶组合物的液晶显示设备。本发明的液晶组合物在不降低折射率各向异性(Δn)和向列相各向异性液相转变温度(Tni)的情况下具有以下特性:足够低的粘度(η)、足够低的旋转粘度(γ1)、较大的弹性常数(K33)、紫外线照射后较高的电压保持率(VHR (UV))以及绝对值较大的负介电各向异性(Δε)。使用这种液晶成分的 VA 型等液晶显示设备响应速度快,显示质量优异,可消除或减少显示缺陷。