Polysiloxanes
    1.
    发明授权
    Polysiloxanes 失效
    聚硅氧烷

    公开(公告)号:US6060133A

    公开(公告)日:2000-05-09

    申请号:US930643

    申请日:1997-10-06

    摘要: A compound of formula I ##STR1## wherein n=3-30; X and Y are independently chosen from C.sub.1-6 alkyl, phenyl or formula II:(CH.sub.2).sub.p O--M IIwherein p=1-20 and M is a group of formula III: ##STR2## wherein a, b and g are independently chosen from 0 and 1; G is selected from CO.sub.2, OCO and is a single bond when g=0; j=0-4; F indicates that one or more of the phenyl rings may be laterally fluorinated; Z is chosen from R, OR, CO.sub.2 R, OCOR or CN wherein R is selected from chiral C.sub.4-20 branched chain alkyl, provided that at least one of X and Y is selected from formula II and that the positions of X and Y relative to each other provide stereo-isomers.

    摘要翻译: PCT No.PCT / GB96 / 00837 Sec。 371日期:1997年10月6日 102(e)日期1997年10月6日PCT 1996年4月4日PCT PCT。 公开号WO96 / 31576 日期:1996年10月10日其中n = 3-30的式I化合物; X和Y独立地选自C 1-6烷基,苯基或式II:(CH 2)p O-MII,其中p = 1-20,M是式III的基团:其中a,b和g独立地选自0和 1; G选自CO2,OCO,当g = 0时为单键; j = 0-4; F表示一个或多个苯环可以被横向氟化; Z选自R,OR,CO 2 R,OCOR或CN,其中R选自手性C 4-20支链烷基,条件是X和Y中的至少一个选自式II,并且X和Y相对于 彼此提供立体异构体。

    Ferroelectric liquid crystal devices
    4.
    发明授权
    Ferroelectric liquid crystal devices 失效
    铁电液晶装置

    公开(公告)号:US6075583A

    公开(公告)日:2000-06-13

    申请号:US793527

    申请日:1997-02-27

    摘要: In order to the effects of impact on liquid crystal devices a polymer network is introduced into ferroelectric liquid crystal cells. A liquid crystal device comprises two spaced cell walls each bearing electrode structures and treated on at least one facing surface with an alignment layer, a layer of a smectic liquid crystal material enclosed between the cell walls, characterised in that the liquid crystal material contains a small amount of monomer. The liquid crystal material may also contain a photoinitiator. The monomer material may be cured to produce the polymer network; the curing may be carried out in the presence of an electric or magnetic field. Further, the monomer may be cured in an isotropic or liquid crystal phase.

    摘要翻译: PCT No.PCT / GB95 / 02036 Sec。 371日期1997年2月27日 102(e)1997年2月27日PCT PCT 1995年8月30日PCT公布。 公开号WO96 / 07123 日期1996年3月7日为了对液晶装置的影响,将聚合物网络引入铁电液晶单元。 一种液晶装置包括两个间隔开的电池壁,每个电池壁都带有电极结构,并在至少一个面对表面上进行处理,该对置表面具有取向层,封闭在电池壁之间的层状液晶材料层,其特征在于液晶材料含有小的 单体量。 液晶材料也可以含有光引发剂。 单体材料可以固化以产生聚合物网络; 固化可以在电场或磁场的存在下进行。 此外,单体可以在各向同性或液晶相中固化。

    Liquid crystal mixtures and devices
    8.
    发明授权
    Liquid crystal mixtures and devices 失效
    液晶混合物和装置

    公开(公告)号:US5891358A

    公开(公告)日:1999-04-06

    申请号:US676203

    申请日:1996-07-10

    摘要: The invention describes liquid crystal compounds of formula (I) which are suitable for use in liquid crystal devices including those devices which exploit the electroclinic effect, ##STR1## where X may be CN, NO.sub.2, CF.sub.3, CF.sub.2 H, CFH.sub.2, halogen, hydrogen, alkyl or alkoxy; X.sub.2 may be CN, NO.sub.2, CF.sub.3, CF.sub.2 H, CFH.sub.2, halogen, hydrogen, alkyl or alkoxy; X.sub.3 may be CN, NO.sub.2, CF.sub.3, CF.sub.2 H, CFH.sub.2, halogen, alkyl, alkoxy or hydrogen; X.sub.4 may be CN, NO.sub.2, CF.sub.3, CF.sub.2 H, CFH.sub.2, halogen, alkyl, alkoxy or hydrogen; provided that at lease one of X or X.sub.2 is CF.sub.3, CF.sub.2 H, CFH.sub.2, CN, NO.sub.2 or halogen; A and B are independently phenyl, mono-fluorinated phenyl, di-fluorinated phenyl or cyclohexyl; Y may be single bond, COO, OOC, C.dbd.C; q may be 0 or 1; R.sub.1 may be an end group of formula (II) wherein Z may be a single bond, O, CO.sub.2, (CH.sub.2).sub.n or (CH.sub.2).sub.n O where n may be 1 or 2; J and M may be independently H, C.sub.1-4 alkyl; W may be C.sub.1 -C.sub.12 straight or branched alkyl chain; R.sub.2 may contain 1-14 carbon atoms wherein one or more non-adjacent CH.sub.2 groups may be replaced by CO.sub.2 or O. X or X.sub.2 may give rise to steric hindrance with the nearest terminal group. The materials of the current invention may be mixed together and/or with other liquid crystal compounds. Suitable devices which the materials of the present invention may be incorporated in include beam steerers, piezoelectric actuators or sensors and pyroelectric sensors and displays in general. The materials of the present invention may also be useful as dopants in ferroelectrics and as second order non-linear optic materials for second harmonic conversion of light.

    摘要翻译: PCT No.PCT / GB95 / 00018 Sec。 371日期:1996年7月10日 102(e)日期1996年7月10日PCT 1995年1月6日PCT PCT。 WO95 / 18848 PCT公开 日期:1995年7月13日本发明描述了适用于液晶装置的液晶化合物,其中包括那些利用电击效应的装置,其中X可以是 CN,NO 2,CF 3,CF 2 H,CFH 2,卤素,氢,烷基或烷氧基; X 2可以是CN,NO 2,CF 3,CF 2 H,CFH 2,卤素,氢,烷基或烷氧基; X3可以是CN,NO2,CF3,CF2H,CFH2,卤素,烷基,烷氧基或氢; X 4可以是CN,NO 2,CF 3,CF 2 H,CFH 2,卤素,烷基,烷氧基或氢; 条件是X或X 2中至少一个为CF 3,CF 2 H,CFH 2,CN,NO 2或卤素; A和B独立地是苯基,单氟化苯基,二氟化苯基或环己基; Y可以是单键,COO,OOC,C = C; q可以是0或1; R 1可以是式(II)的端基,其中Z可以是单键O,CO 2,(CH 2)n或(CH 2)n O,其中n可以是1或2; J和M可以独立地是H,C 1-4烷基; W可以是C 1 -C 12直链或支链烷基链; R2可以含有1-14个碳原子,其中一个或多个不相邻的CH 2基团可以被CO 2或O取代。X或X 2可以引起与最近的末端基团的空间位阻。 本发明的材料可以混合在一起和/或与其它液晶化合物混合。 可并入本发明的材料的合适的装置包括光束转向器,压电致动器或传感器以及热电传感器和显示器。 本发明的材料也可用作铁电体中的掺杂剂,并且可用作光二次谐波转换的二阶非线性光学材料。

    Liquid crystal device
    10.
    发明授权
    Liquid crystal device 失效
    液晶装置

    公开(公告)号:US6016180A

    公开(公告)日:2000-01-18

    申请号:US899440

    申请日:1997-07-24

    摘要: A liquid crystal device is provided with a pair of substrates (12, 16) containing a liquid crystal material (22). A wall structure comprising, for example, a plurality of walls (14) is provided between the two substrates. The wall structure provides mechanical strength to the device and resistance to flow of liquid crystal material which can cause deterioration in the device performance. The walls may extend in two mutually different directions (FIG. 8, 40) to provide mechanical strength and resistance to flow in two directions while the device can still be readily filled. The device is particularly applicable to a ferroelectric liquid crystal device.

    摘要翻译: 液晶装置具有包含液晶材料(22)的一对基板(12,16)。 包括例如多个壁(14)的壁结构设置在两个基板之间。 壁结构为器件提供了机械强度并且阻止液晶材料的流动,这可能导致器件性能的劣化。 壁可以在两个相互不同的方向上延伸(图8,40),以提供在两个方向上的流动的机械强度和阻力,同时装置仍然可以容易地被填充。 该装置特别适用于铁电液晶装置。