Difluoroethyleneoxi derivatives, the liquid crystal composition and the liquid crystal display device
申请人:Sasada Yasuyuki
公开号:US08906260B2
公开(公告)日:2014-12-09
To provide a liquid crystal compound showing a large absolute value of dielectric anisotropy (|Δ∈|. A compound is represented by formula (1):
wherein, in formula (1), Ra and Rb are fluorine, alkyl having 1 to 10 carbons or the like, and in the alkyl, at least one of —CH2— may be replaced by —O— or the like, however, Ra and Rb are not identical; A1, A2, A3, A4 and A5 are 1,4-cyclohexylene, 1,4-phenylene or the like, and in the groups, at least one of hydrogen may be replaced by fluorine; Z1, Z2, Z4 and Z5 are a single bond or the like; Y1, Y2, Y3 and Y4 are hydrogen, fluorine or the like; and m, n, q and r are 0, 1 or 2, and a sum of m, n, q and r is 0, 1, 2, 3 or 4.
提供一种具有大电介质各向异性绝对值(|Δ∈|)的液晶化合物。该化合物由公式(1)表示:其中,在公式(1)中,Ra和Rb分别是氟、具有1至10个碳或类似物的烷基,在烷基中,至少有一个-CH2-可以被-O-或类似物所替代,但Ra和Rb不相同;A1、A2、A3、A4和A5分别是1,4-环己撑基、1,4-苯撑基或类似物,在这些基团中,至少有一个氢可以被氟所替代;Z1、Z2、Z4和Z5分别是单键或类似物;Y1、Y2、Y3和Y4分别是氢、氟或类似物;m、n、q和r分别为0、1或2,且m、n、q和r的总和为0、1、2、3或4。