Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.

Guoliang Yuan

Ruimao Hua

Gang Wen

Kui Wang

Jinsong Meng

Zhian Liang

Lei Zhao

Ming Li

Mingxia Wang

Lihong Gui

Jia Deng

Jingyi Feng

Lianbo Mao

Yun-xia Qiao

Jin-song Meng

Rui-mao Hua

Miaofang Zhang

Xiaobin Rong

Ziqian Shi

Hu-bo Zhang

The present disclosure discloses a liquid crystal compound and a liquid crystal composition. The liquid crystal compound has a general structural formula as represented by formula I. The liquid crystal composition provided by the present disclosure has a lower rotary viscosity &#x3b3;, can achieve a quick response, and further has an appropriate dielectric anisotropy &#x394;&#x2208;, an appropriate optical anisotropy &#x394;n, a high stability to heat and light, a high VHR numerical value especially in the case where the liquid crystal is under harsh conditions, and a stability to electric field and electromagnetic radiation. As a liquid crystal material for use in thin film transistor techniques (TFT-LCD), the material further has the properties of a wider nematic phase temperature range, an appropriate birefringence anisotropy, a very high electrical resistivity, a good anti-ultraviolet performance, a high charge holding rate, a low vapor pressure etc. 

Liquid crystal compound and liquid crystal composition

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

The present invention is directed to compounds of the following General Formula I. The cyclopropyl-bearing liquid crystal compounds of Formula I of the present invention have a positive or negative dielectric anisotropy (&#x394;&#x2208;), an appropriate optical anisotropy (&#x394;n), an appropriate clearing point (CP), good low-temperature miscibility with other liquid crystals, a low rotary viscosity, and good UV stability and high-temperature thermal stability, and therefore have good use value. The compounds of the present invention can be used for preparing positive and negative liquid crystal compositions and can also be employed in passive and active matrix displays. 

Cyclopropyl-bearing liquid crystal compounds and mixtures

This invention relates to liquid crystal compounds of formula I containing cyclopentyl group and difluoromethyleneoxy linking group. Liquid crystal compounds of formula I have a large dielectric anisotropy, high clearing points, and a fast response speed, thereby having great significance to formulate a liquid crystal mixture. 

Liquid crystal compound containing cyclopentyl and difluorometheneoxy linking group, preparation method and application thereof

Growing community of inventors

Hebei, China

Guoliang Yuan