LIQUID CRYSTAL COMPOUND HAVING CYCLOHEXENE RING, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:JNC CORPORATION
公开号:US20160280997A1
公开(公告)日:2016-09-29
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, low minimum temperature of liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, suitable elastic constant and excellent compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition.
A solution is a compound represented by formula (1).
R
1
is alkyl having 1 to 10 carbons, rings A
1
, A
3
and A
4
are independently 1,4-phenylene, ring A
2
is a divalent group represented by any one of formulas (Ch), (Cx) and (ch).
Z
1
, Z
2
, Z
3
and Z
4
are a single bond, X
1
is fluorine, L
1
and L
2
are fluorine, a, b and c are independently 0 or 1, and a sum of a, b and c is 0 or 1, for example.
问题是提供一种液晶化合物,满足至少一种物理性质,如高热稳定性和耐光性、高清晰点、液晶相的低最低温度、低粘度、适当的光学各向异性、大介电各向异性、适当的弹性常数以及与其他液晶化合物的优良兼容性,一种含有该化合物的液晶组合物和包括该组合物的液晶显示装置。解决方案是由式(1)表示的化合物。R1是具有1到10个碳的烷基,环A1、A3和A4分别是1,4-苯撑,环A2是由任一式(Ch)、(Cx)和(ch)中的任一式表示的二价基团。Z1、Z2、Z3和Z4是单键,X1是氟,L1和L2是氟,a、b和c分别独立地为0或1,a、b和c的总和为0或1,例如。