Polycyclic compound, liquid crystal material consisting of the
polycyclic compound, liquid crystal composition comprising the liquid
crystal material, and liquid crystal element
    1.
    发明授权
    Polycyclic compound, liquid crystal material consisting of the polycyclic compound, liquid crystal composition comprising the liquid crystal material, and liquid crystal element 失效
    多环化合物,由多环化合物组成的液晶材料,包含液晶材料的液晶组合物和液晶元件

    公开(公告)号:US6019911A

    公开(公告)日:2000-02-01

    申请号:US930254

    申请日:1997-09-26

    摘要: Disclosed is a polycyclic compound represented by the following formula (I):R.sup.1 --X.sup.1 --[A.sup.1 --X.sup.2 ]--[A.sup.2 --X.sup.3 ]--R.sup.2 (I)wherein R.sup.1 is a (halogenated) alkyl group of 6 to 16 carbon atoms, X.sup.1 is --O-- group or a single bond, A.sup.1 is a biphenylene group, a phenylene group or the like, A.sup.2 is 1-fluoro-3,4-dihydronaphthalene or the like, X.sup.2 and X.sup.3 are each --COO--, a single bond or the like, and R.sup.2 is an optically active group of 4 to 20 carbon atoms which has at least one asymmetric carbon atom. Also disclosed are a liquid crystal material consisting of the polycyclic compound, a liquid crystal composition comprising the liquid crystal material, and a liquid crystal element. This novel polycyclic compound is optically active and capable of being in a smectic phase in a wide temperature range including room temperature. The polycyclic compound can be used as a ferroelectric liquid crystal material or an antiferroelectric liquid crystal material. By the use of the liquid crystal material of the invention, a liquid crystal element having a quick response speed in a wide temperature range can be obtained.

    摘要翻译: PCT No.PCT / JP96 / 00783 Sec。 371日期:1997年9月26日 102(e)1997年9月26日PCT PCT 1996年3月26日PCT。 公开号WO96 / 30330 PCT 日期:1996年10月3日公开是由下式(I)表示的多环化合物:R1-X1- [A1-X2] - [A2-X3] -R2(Ⅰ)其中R1是(卤代)烷基6 至16个碳原子,X1为-O-基或单键,A1为亚联苯基,亚苯基等,A2为1-氟-3,4-二氢萘等,X 2和X 3各自为 - COO-,单键等,R 2为具有至少一个不对称碳原子的4〜20个碳原子的光学活性基团。 还公开了由多环化合物,包含液晶材料的液晶组合物和液晶元件组成的液晶材料。 这种新型多环化合物是光学活性的并且能够在包括室温在内的宽温度范围内处于近晶相。 多环化合物可以用作铁电液晶材料或反铁电液晶材料。 通过使用本发明的液晶材料,可以获得在宽温度范围内具有快速响应速度的液晶元件。