LIQUID CRYSTAL COMPOUND HAVING DIFLUOROMETHYLENEOXY, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:JNC CORPORATION
公开号:US20150376502A1
公开(公告)日:2015-12-31
To provide a liquid crystal compound satisfying at least one of physical properties such as high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant and excellent compatibility; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition.
The compound is represented by formula (1).
For example, R
1
is alkyl having 1 to 15 carbons, ring A
1
to ring A
4
are 1,4-cyclohexylene or 1,4-phenylene, Z
1
to Z
4
are a single bond, —(CH
2
)
2
—, —COO— or —CH
2
O—, X
1
is halogen, —C≡N, —CF
3
or —OCF
3
, L
1
and L
2
are hydrogen or fluorine, Y
1
and Y
2
are fluorine; a, b, c and d each are 0 or 1, and a sum thereof is 1 or 2.