Compound having dihydrophenanthrene, liquid crystal composition and liquid crystal display device
申请人:Hirata Kenji
公开号:US09193908B2
公开(公告)日:2015-11-24
To provide a liquid crystal compound having a large negative dielectric anisotropy (Δ∈), and having at least one of characteristics such as a high stability to heat, light and so forth, a high clearing point, a suitable refractive index anisotropy (Δn) and an excellent compatibility with other liquid crystal compounds, and an intermediate thereof. A solution is a compound represented by formula (1):
wherein, for example, R1 and R2 are alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons or alkenyl having 2 to 12 carbons; ring A1, ring A2 and ring A3 are 1,4-cyclohexylene or 1,4-phenylene; Z1, Z2 and Z3 are a single bond or —(CH2)2—; X is —CF2— or —CHF—; and l, m and n are 0 or 1.
提供一种具有大的负介电各向异性(Δ∈)的液晶化合物,具有高热稳定性、光稳定性等特性之一,高清晰点,适当的折射率各向异性(Δn)和与其他液晶化合物的优异相容性,以及其中间体。其中一种解决方案是由式(1)表示的化合物:例如,其中R1和R2是具有1到12个碳的烷基,具有1到12个碳的烷氧基或具有2到12个碳的烯基;环A1,环A2和环A3是1,4-环己基或1,4-苯基;Z1,Z2和Z3是单键或—(CH2)2—;X是—CF2—或—CHF—;l,m和n为0或1。