Abstract: A cycloheptane derivative as represented by formula (I), and preparation method and use thereof; the compound has photostability and thermostability, wide nematic phase and liquid crystalline state temperature range, and good low-temperature intersolubility, and particularly has low rotary viscosity ?1 and good dielectric anisotropy (??>0).

Abstract: A liquid crystal compound containing cyclobutyl and a linking group difluoromethyleneoxy, and a preparation method and use thereof are disclosed. The compound is as shown in Formula I. The liquid crystal compound containing cyclobutyl as a terminal group and difluoromethyleneoxy (—CF2O—) as a linking group in the molecular structure of Formula I according to the present invention, has not only a high dielectric anisotropy, but also importantly an extremely fast response speed and a high clearing point, which are of great significance for the formulation of a liquid crystal mixture.

Abstract: Disclosed is a liquid crystal compound. The compound has a general structural formula as shown by formula I. Such a compound has good thermal and UV stability, large positive dielectric anisotropy ??, and can achieve a low threshold voltage when used in optics, thereby having great significance to the fast response of display devices, and therefore being very suitable for formulating a liquid crystal mixture. A liquid crystal mixture containing such a liquid crystal unit can be applied to various display devices, and is especially suitable for TN-TFT and STN display devices, but can also be used in IPS (in-plane switching) and VA (vertically aligned) display devices.

Abstract: A liquid crystal compound containing cyclobutyl and a linking group difluoromethyleneoxy, and a preparation method and use thereof are disclosed. The compound is as shown in Formula I. The liquid crystal compound containing cyclobutyl as a terminal group and difluoromethyleneoxy (—CF2O—) as a linking group in the molecular structure of Formula I according to the present invention, has not only a high dielectric anisotropy, but also importantly an extremely fast response speed and a high clearing point, which are of great significance for the formulation of a liquid crystal mixture.

Abstract: A cycloheptane derivative as represented by formula (I), and preparation method and use thereof; the compound has photostability and thermostability, wide nematic phase and liquid crystalline state temperature range, and good low-temperature intersolubility, and particularly has low rotary viscosity ?1 and good dielectric anisotropy (??>0).

Abstract: Disclosed is a liquid crystal compound. The compound has a general structural formula as shown by formula I. Such a compound has good thermal and UV stability, large positive dielectric anisotropy ??, and can achieve a low threshold voltage when used in optics, thereby having great significance to the fast response of display devices, and therefore being very suitable for formulating a liquid crystal mixture. A liquid crystal mixture containing such a liquid crystal unit can be applied to various display devices, and is especially suitable for TN-TFT and STN display devices, but can also be used in IPS (in-plane switching) and VA (vertically aligned) display devices.