ORTHOESTER DERIVATIVE, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:Masukawa Tokifumi
公开号:US20140021407A1
公开(公告)日:2014-01-23
The invention is to provide a liquid crystal compound having a large dielectric anisotropy, a high voltage holding ratio and stability to heat, light and so forth, maintaining a nematic phase in a wide temperature range, having a suitable optical anisotropy and an excellent compatibility with other liquid crystal compounds, particularly, to provide a liquid crystal compound having a large dielectric anisotropy. The invention provides compound (1):
In the formula, for example, R
1
is alkyl having 1 to 20 carbons; ring A
1
, ring A
2
, ring A
3
, ring A
4
, ring A
5
and ring A
6
are independently 1,4-cyclohexylene or 1,4-phenylene; Z
1
, Z
2
, Z
3
, Z
4
, Z
5
, Z
6
and Z
7
are independently a single bond, —(CH
2
)
2
—, —COO—, —OCO—, —CF
2
O—, —OCF
2
— or —CH═CH—; X
1
is fluorine, —CF
3
or —OCF
3
; and Y
1
and Y
2
are independently hydrogen or fluorine.
本发明旨在提供一种具有大的介电各向异性、高电压保持比和对热、光等的稳定性,在广泛的温度范围内保持向列相,具有适当的光学各向异性和与其他液晶化合物良好的相容性,特别是提供一种具有大的介电各向异性的液晶化合物。本发明提供化合物(1):其中,在公式中,例如,R1是具有1至20个碳的烷基;环A1、环A2、环A3、环A4、环A5和环A6独立地是1,4-环己亚甲基或1,4-苯亚甲基;Z1、Z2、Z3、Z4、Z5、Z6和Z7独立地是单键,-(CH2)2-,-COO-,-OCO-,-CF2O-,-OCF2-或-CH═CH-;X1是氟、-CF3或-OCF3;而Y1和Y2独立地是氢或氟。