COMPOUND HAVING PROPYL ETHER AS BONDING GROUP, LIQUID CRYSTAL COMPOSITION THEREOF AND LIQUID CRYSTAL DISPLAY DEVICE THEREOF
申请人:Kubo Takahiro
公开号:US20130126783A1
公开(公告)日:2013-05-23
A liquid crystal compound is described, which has stability to heat, light and so forth, keeps a nematic phase in a wide temperature range, has a small viscosity, a suitable optical anisotropy and a suitable elastic constant K
33
, and further has a large negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds. The liquid crystal compound is represented by formula (1):
wherein, for example, R
1
is alkyl having 1 to 10 carbons, R
2
is alkoxy having 1 to 10 carbons; ring A
1
, ring A
2
and ring A
5
are 1,4-cyclohexylene, 1,4-phenylene, or 1,4-phenylene in which arbitrary hydrogen is replaced by fluorine; Z
1
and Z
4
are a single bond, —CH
2
CH
2
— or —CH═CH—; a, b and e are 0 or 1, and c and d is 0; X
1
, X
2
and X
4
are hydrogen, and X
3
is fluorine; and L
1
and L
2
are fluorine.
描述了一种液晶化合物,具有耐热、耐光等稳定性,在广泛的温度范围内保持向列相,具有较小的粘度、适当的光学各向异性和适当的弹性常数K33,进一步具有较大的负电介质各向异性和与其他液晶化合物的良好相容性。该液晶化合物的化学式为(1),其中,例如,R1为具有1至10个碳的烷基,R2为具有1至10个碳的烷氧基;环A1、环A2和环A5为1,4-环己基、1,4-苯基或1,4-苯基,其中任意氢被氟取代;Z1和Z4为单键,-CH2CH2-或-CH═CH-;a、b和e为0或1,c和d为0;X1、X2和X4为氢,X3为氟;L1和L2为氟。