Provided are a difluoromethoxy-bridge liquid crystal compound containing methyl-substituted 2,3-difluorophenyl, a liquid crystal composition containing the compound, and a liquid crystal display element and a liquid crystal display, wherein said liquid crystal composition is represented by the following formula I:
wherein the difluoromethoxy-bridge liquid crystal compound containing methyl-substituted 2,3-difluorophenyl not only has a high clearing point (CP) and a prominent low-temperature miscibility with other liquid crystals, but also has a good stability to ultraviolet light, stability to high temperatures, and particularly also a high vertical dielectric constant (ε
⊥
), and may be applied to the formulation of various types of liquid crystal compositions, and it is particularly prominent that the compound has the advantages of both a good low-temperature miscibility and a high vertical dielectric constant (ε
⊥
).
提供的是一种含有甲基取代的2,3-二
氟苯基的二
氟甲氧基桥液晶化合物,一种含有该化合物的液晶组合物,以及液晶显示元件和液晶显示器。其中,该液晶组合物由下式I表示:其中,含有甲基取代的2,3-二
氟苯基的二
氟甲氧基桥液晶化合物不仅具有高的清晰点(CP)和与其他液晶的低温混溶性,还具有良好的紫外光稳定性,高温稳定性,特别是高的垂直介电常数(ε⊥),可用于各种类型的液晶组合物的配方,尤其突出的是该化合物具有良好的低温混溶性和高的垂直介电常数(ε⊥)的优点。