LIQUID CRYSTAL COMPOUND HAVING NEGATIVE DIELECTRIC ANISOTROPY, LIQUID CRYSTAL COMPOSITION USING THIS AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:Shimada Teru
公开号:US20110272630A1
公开(公告)日:2011-11-10
The invention provides a liquid crystal compound having a suitable value of refractive index anisotropy, a suitable value of dielectric anisotropy, steep characteristics electro-optic characteristics, a wide temperature range of a nematic phase and an excellent compatibility with other liquid crystal compounds, and a liquid crystal compounds especially having a wide temperature range of a nematic phase.
A compound represented by formula (1).
For example, R
1
and R
2
are each independently alkyl having 1 to 9 carbons or alkenyl having 2 to 9 carbons, alkoxy having 1 to 8 carbons or alkenyloxy having 2 to 8 carbons; Q
1
and Q
4
are each independently fluorine or chlorine; Q
2
and Q
3
are each independently hydrogen, fluorine or chlorine, and one of Q
2
and Q
3
is hydrogen; Z is —CH
2
O— or —COO—; and h is 1 or 2.
本发明提供了一种具有适当折射率各向异性值、适当介电各向异性值、陡峭的电光特性、广泛的向列相温度范围和与其他液晶化合物优异的相容性的液晶化合物,特别是具有广泛的向列相温度范围的液晶化合物。该化合物由式(1)表示。例如,R1和R2各自独立地为具有1至9个碳或2至9个碳的烷基或烯基,具有1至8个碳或2至8个碳的烷氧基或烯氧基;Q1和Q4各自独立地为氟或氯;Q2和Q3各自独立地为氢、氟或氯,其中Q2和Q3中的一个为氢;Z为—CH2O—或—COO—;h为1或2。