申请人:Tanaka Hiroyuki
公开号:US20120029194A1
公开(公告)日:2012-02-02
The invention provides a liquid crystal compound having general physical properties necessary for the compound, namely stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a high clearing point, a good compatibility with other compounds, a large optical anisotropy and a large dielectric anisotropy; a compound represented by formula (1):
wherein, for example, R
1
is alkyl having 1 to 20 carbons; ring A
1
and ring A
4
each are 1,4-cyclohexylene, 1,4-phenylene, or 1,4-phenylene in which arbitrary hydrogen is replaced by halogen; Z
1
and Z
4
each are a single bond; L
1
, L
2
, L
3
and L
4
each are hydrogen or fluorine; and X
1
is fluorine, chlorine, —CF
3
or —OCF
3
.
该发明提供了一种具有化合物所需的一般物理性质的液晶化合物,即对热、光等的稳定性,液晶相的宽温度范围,高清晰点,与其他化合物的良好相容性,大光学各向异性和大介电各向异性的化合物;由以下式表示的化合物(1):
其中,例如,R1是具有1到20个碳的烷基;环A1和环A4分别是1,4-环己烯基,1,4-苯基,或者1,4-苯基,其中任意氢原子被卤素替代;Z1和Z4分别是单键;L1,L2,L3和L4分别是氢或氟;X1是氟,氯,-CF3或-OCF3。