Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.

Shijiazhuang Chenzhi Yonghua Display Materials Co., Ltd.

Lianbo Mao

Gang Wen

Ruimao Hua

Guoliang Yun

Kui Wang

Lei Zhao

Guoliang Yuan

Lihong Gui

Jingyi Feng

Zefeng Hou

Xiaobin Rong

Ziqian Shi

A negative dielectric anisotropic liquid crystal compound containing 2,3-difluorophenyl, and a preparation method and use thereof are disclosed. The compound has a general structural formula as shown in Formula I. The negative dielectric anisotropic liquid crystal compound has a negative dielectric anisotropy (&#x394;&#x2208;), and has cyclobutyl or cyclopentyl as a terminal group. Compared with conventional liquid crystal compounds with a flexible alkyl chain as a terminal group, the compound of Formula I according to the present invention has the advantage of high clearing point, and enables extension of the application range of a liquid crystal mixture because a positive correlation exists between the clearing points of the liquid crystal mixture and monomer liquid crystal compounds. In addition, the compound can increase the absolute value of the negative dielectric constant of the liquid crystal mixture, thus having an important application value. 

Negative dielectric anisotropic liquid crystal compounds containing 2,3-difluorophenyl group, and preparation method and use thereof

A liquid crystal composition having a negative dielectric anisotropy is disclosed. The liquid crystal composition includes compounds of Formulas I to IV. The composition has a low threshold voltage, a low rotary viscosity, a high resistivity, a high voltage holding ratio, and a good high temperature and UV stability. The LC medium has the advantage of obviously reduced response time after polymerization under UV irradiation, thus having important application value. 

Liquid crystal composition having negative dielectric anisotropy

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Lianbo Mao