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.
ORTHO ESTER DERIVATIVE, LIQUID CRYSTAL COMPOSITION, AND LIQUID CRYSTAL DISPLAY ELEMENT
申请人:JNC Corporation
公开号:EP2690103A1
公开(公告)日:2014-01-29
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, R1 is alkyl and having 1 to 20 carbons; ring A1, ring A2, ring A3, ring A4, ring A5 and ring A6 are independently 1,4-cyclohexylene or 1,4-phenylene; Z1, Z2, Z3, Z4, Z5, Z6 and Z7 are independently a single bond, - (CH2) 2-, -COO-, -OCO-, CF2O-, -OCF2- or -CH=CH-; X1 is fluorine, -CF3 or -OCF3; and Y1 and Y2 are independently hydrogen or fluorine.