Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.

Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.

Hongmei Cui

Guoliang Yun

Sumin Kang

Xing Zhang

Ming Li

Ruimao Hua

Mingxia Wang

Yunxia Qiao

Jin Wang

Jingyi Feng

Yajie Duan

Yongtao Zhang

Yamin Li

Yong Chen

Provided is a liquid crystal compound containing 2,3,4-trisubstituted benzene, a liquid crystal composition thereof, and a liquid crystal display element or a liquid crystal display comprising the liquid crystal compound or the liquid crystal composition, wherein the liquid crystal composition has a lower viscosity, can achieve a quick response, and further has a moderate dielectric anisotropy &#x394;&#x3b5;, a moderate optical anisotropy &#x394;n, and high stability to heat and light. The liquid crystal display element or liquid crystal display comprising the liquid crystal composition has the properties of a wider nematic phase temperature range, an appropriate birefringence anisotropy, a very high electrical resistivity, a good ultraviolet resistant property, a high charge retention rate, a low vapor pressure etc., and particularly, the liquid crystal compound or the liquid crystal composition has the advantage of a high light transmittance.

Liquid crystal compound containing 2,3,4-trisubstituted benzene and composition thereof

Disclosed is a liquid crystal composition and use thereof. The liquid crystal composition comprises components a, b and c; wherein component a is selected from one of the compounds represented by formula I; component b is a liquid crystal composition having a dielectric anisotropy of greater than 3; and component c is a liquid crystal composition having a dielectric anisotropy of &#x2212;3 to 3. The liquid crystal composition has a high contrast ratio property, and has a low change rate at a low temperature, that is, the decrease of contrast ratio at a low temperature (such as &#x2212;20&#xb0; C.) is smaller as compared to a normal temperature. The composition has suitable properties with regard to practical applications, including a broader nematic phase range, an appropriate dielectric anisotropy, optical anisotropy and operating voltage, an excellent response time, a high electrical resistivity and voltage holding ratio, a low rotary viscosity, etc. 

Liquid crystal composition and application thereof

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Hongmei Cui