FIVE-RING LIQUID CRYSTAL COMPOUND, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:Kobayashi Masahide
公开号:US20120074355A1
公开(公告)日:2012-03-29
The invention provides a liquid crystal compound having a high stability to heat, light or the like, a nematic phase in a wide temperature range, a small viscosity, a suitable optical anisotropy (especially, a relatively small optical anisotropy), a large elastic constant K
33
and a suitable dielectric anisotropy (especially, a relatively large dielectric anisotropy), which is represented by formula (1-1).
For example, R
1
and R
2
are alkyl having 1 to 10 carbons, alkenyl having 2 to 10 carbons or alkoxy having 1 to 9 carbons; the ring A
1
and the ring A
2
is 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene; and m and n are 0, 1, 2 or 3, and the sum of m and n is 3.
本发明提供了一种液晶化合物,具有高稳定性,耐热、耐光等性能,在广泛的温度范围内具有向列相、粘度小、适当的光学各向异性(尤其是相对较小的光学各向异性)、大的弹性常数K33和适当的介电各向异性(尤其是相对较大的介电各向异性),其由式(1-1)所表示。例如,R1和R2为具有1-10个碳原子的烷基、具有2-10个碳原子的烯基或具有1-9个碳原子的烷氧基;环A1和环A2为1,4-苯撑、2-氟-1,4-苯撑、3-氟-1,4-苯撑或3,5-二氟-1,4-苯撑;m和n为0、1、2或3,且m和n的和为3。