LIQUID CRYSTAL FOUR-RING COMPOUND HAVING FLUORINE, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:Kubo Takahiro
公开号:US20110079753A1
公开(公告)日:2011-04-07
The invention provides a liquid crystal compound having stability to heat, light and so forth, a wide temperature range of the nematic phase, a small viscosity, a suitable optical anisotropy, a suitable dielectric anisotropy and an excellent compatibility with other liquid crystal compounds. The invention also provides a liquid crystal composition containing this liquid crystal compound and a liquid crystal display device containing this liquid crystal composition.
The compound is represented by formula (a).
R
a
is, for example, alkyl having 1 to 10 carbons, and R
b
is, for example, alkenyl having 2 to 10 carbons; L
a
is, for example, hydrogen; and Z
1
, Z
2
and Z
3
are, for example, a single bond. The liquid crystal composition comprises this compound. The liquid crystal display device comprises this liquid crystal composition.
本发明提供了一种液晶化合物,具有耐热、耐光等稳定性,具有广泛的向列相温度范围、小粘度、适当的光学各向异性、适当的介电各向异性和与其他液晶化合物的优异相容性。本发明还提供了一种包含该液晶化合物的液晶组合物和一种包含该液晶组合物的液晶显示装置。该化合物由式(a)表示。其中,Rais例如,具有1到10个碳的烷基,Rbis例如,具有2到10个碳的烯基;Lais例如,氢;Z1、Z2和Z3例如,单键。该液晶组合物包括该化合物。该液晶显示装置包括该液晶组合物。