LIQUID CRYSTAL COMPOUND HAVING A 3,6-DIHYDRO-2H-PYRAN RING, NEGATIVE DIELECTRIC ANISOTROPY, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:JNC CORPORATION
公开号:US20160230094A1
公开(公告)日:2016-08-11
A problem is to provide a liquid crystal compound satisfying at least one physical property, such as high stability to heat and light, a high clearing point (or high maximum temperature), a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and good compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition.
A means is a compound represented by formula (1):
in which, R
a
and R
b
are alkyl having 1 to 10 carbons; ring A
1
, ring A
2
and ring A
3
are 1,4-cyclohexylene, 1,4-phenylene; and ring N
1
is 2,3-difluoro-1,4-phenylene; G is a divalent group represented by formula (pr-1) or (pr-2);
in which, Z
1
, Z
2
, Z
3
and Z
4
are a single bond; and a, b and c are 0, 1 or 2, for example.