Biphenyl esters and liquid crystal materials and devices containing them
    2.
    发明授权
    Biphenyl esters and liquid crystal materials and devices containing them 失效
    联苯酯和含有它们的液晶材料和装置

    公开(公告)号:US4769176A

    公开(公告)日:1988-09-06

    申请号:US923825

    申请日:1986-10-30

    摘要: Biphenyl esters of formula (I), wherein formula (II) represents formula (III) or formula (IV), R.sub.1 represents C.sub.3 -C.sub.12 alkyl, alkoxy, alkylcarbonyloxy, alkoxycarbonyl or alkoxycarbonyloxy, j is 0 or 1, R.sub.2 represents C.sub.3 -C.sub.12 alkyl or alkoxy, one of Q.sub.1 or Q.sub.2 is fluorine and the other is hydrogen, provided that when j is 0 and formula (II) is formula (III) and both R.sub.1 and R.sub.2 are n-alkyl, then the total number of carbon atoms in R.sub.1 and R.sub.2 is more than 12. These compounds may be used as constituents of liquid crystal mixtures which show a room temperature ferroelectric smectic phase, and a number of such mixtures are described.

    摘要翻译: PCT No.PCT / GB86 / 00040 Sec。 371日期1986年10月30日第 102(e)1986年10月30日PCT PCT日期:1986年1月21日PCT公布。 出版物WO86 / 04327 日期:1986年7月31日。式(I)的二苯基酯,其中式(II)表示式(III)或式(Ⅳ),R1表示C3-C12烷基,烷氧基,烷基羰基氧基,烷氧基羰基或烷氧基羰氧基,j为0或 1,R2表示C3-C12烷基或烷氧基,Q1或Q2中的一个为氟,另一个为氢,条件是当j为0且式(II)为式(III)时,R1和R2均为正烷基, 那么R1和R2中的碳原子总数大于12.这些化合物可以用作显示室温铁电近晶相的液晶混合物的组分,并且描述了许多这样的混合物。

    Integrated electro-optical liquid crystal device and method of using
such a device
    4.
    发明授权
    Integrated electro-optical liquid crystal device and method of using such a device 失效
    集成电光液晶装置及其使用方法

    公开(公告)号:US5587820A

    公开(公告)日:1996-12-24

    申请号:US310671

    申请日:1994-09-22

    CPC分类号: H01L31/0232 G02F1/136

    摘要: An integrated electro-optical device according to the invention comprises a pixellated liquid crystal modulation layer superimposed over an electronic detection layer. Modulator pads for the liquid crystal layer may be formed as electrically conductive combs to achieve optical polarization. Where the liquid crystal layer provides selective absorption of unpolarized light, and separate polarizers between the liquid crystal and detection layers are therefore unnecessary, the device comprises such a liquid crystal layer superimposed over the electronic detector layer. Further, an integrated electro-optical device, optionally of the above type, has a plurality of pixels of the liquid crystal layer for each pixel of the detector array. This allows optical shuttering of the detector pixels by electrically modulating the pixellated liquid crystal layer.

    摘要翻译: 根据本发明的集成电光装置包括叠加在电子检测层上的像素化​​液晶调制层。 用于液晶层的调制器焊盘可以形成为导电梳以获得光学偏振。 在液晶层提供非偏振光的选择性吸收的情况下,因此液晶和检测层之间的分离偏振器是不必要的,该装置包括叠加在电子检测器层上的这种液晶层。 此外,可选地,上述类型的集成电光装置对于检测器阵列的每个像素具有多个液晶层像素。 这允许通过电调制像素化液晶层来对检测器像素进行光学快门。

    Temperature compensated liquid crystal devices
    7.
    发明授权
    Temperature compensated liquid crystal devices 失效
    温度补偿液晶装置

    公开(公告)号:US4219255A

    公开(公告)日:1980-08-26

    申请号:US853477

    申请日:1977-11-21

    申请人: Edward P. Raynes

    发明人: Edward P. Raynes

    CPC分类号: C09K19/42 G02F1/137

    摘要: A phase change liquid crystal device comprising a layer of liquid crystal material contained between two transparent slides which carry electrode structures for applying a voltage across the layer. The liquid crystal material is a mixture of nematic and cholesteric material having a smectic to cholesteric transition just below the operating temperature range of the device. This provides a cholesteric pitch change to compensate for changes with temperature in the elastic twist and dielectric constants.

    摘要翻译: 一种相变液晶装置,包括在两个透明载片之间所含的液晶材料层,所述两个透明载玻片携带用于跨所述层施加电压的电极结构。 液晶材料是向列和胆甾醇材料的混合物,其具有刚好低于器件工作温度范围的近晶相到胆甾醇转变。 这提供了胆甾醇间距改变以补偿弹性扭转和介电常数随温度的变化。

    Organic materials
    8.
    发明授权
    Organic materials 失效
    有机材料

    公开(公告)号:US4464282A

    公开(公告)日:1984-08-07

    申请号:US411095

    申请日:1982-08-24

    IPC分类号: C09B1/58 G02F1/13 C09K3/34

    CPC分类号: C09B1/58 C09B1/585

    摘要: A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye wherein the pleochroic dye comprises at least one anthraquinone compound free from water solubilizing and ionic substituents and having the formula: ##STR1## wherein P is OH or NH.sub.2 ; each group X.sup.A is independently selected from OH, NO.sub.2, SR and NZ.sub.1 Z.sub.2 provided that one group X.sup.A is SR and the other group X.sup.A is OH, NO.sub.2 or NZ.sub.1 Z.sub.2 is 1 or 2; each group Q.sub.1 is independently alkyl having from 1 to 20 carbon atoms; each group R is independently selected from alkyl having from 1 to 20 carbon atoms, aryl having up to 15 carbon atoms and cycloalkyl having from 4 to 8 carbon atoms.

    摘要翻译: 适用于客体主体液晶装置的材料包括液晶材料和多色染料的溶液,其中多色染料包含至少一种不含水溶解和离子取代基的蒽醌化合物,具有下式:其中P 是OH或NH 2; 只要一组XA为SR,另一组XA为OH,NO2或NZ1Z2为1或2,则各基团XA独立地选自OH,NO 2,SR和NZ 1 Z 2。 每个基团Q1独立地为具有1至20个碳原子的烷基; 每个基团R独立地选自具有1至20个碳原子的烷基,具有至多15个碳原子的芳基和具有4至8个碳原子的环烷基。

    Liquid crystal compositions with pleochroic anthraquinone dyes
    9.
    发明授权
    Liquid crystal compositions with pleochroic anthraquinone dyes 失效
    具有多色性蒽醌染料的液晶组合物

    公开(公告)号:US4405211A

    公开(公告)日:1983-09-20

    申请号:US287118

    申请日:1981-07-27

    CPC分类号: C09B1/58 C09K19/603

    摘要: A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye wherein the pleochroic dye comprises at least one compound having a formula: ##STR1## wherein: R represents a group selected from optionally substituted alkyl and optionally substituted monocyclic aryl;Q represents a group selected from halo, OH, --NO.sub.2, alkyl, aryl and --NR.sub.1 R.sub.2, wherein each of R.sub.1 and R.sub.2 independently represents a group selected from H, alkyl and aryl;x represents an integer from 1 to 4; andy represents an integer from 0 to 4;x+y being in the inclusive range 2 to 4;provided that when x+y=2, x=1 and y=1.

    摘要翻译: 适用于客体主体液晶装置的材料包括液晶材料和多色染料的溶液,其中双色染料包含至少一种具有下式的化合物:其中:R代表所选的基团 从任选取代的烷基和任选取代的单环芳基; Q表示选自卤素,OH,-NO 2,烷基,芳基和-NR 1 R 2的基团,其中R 1和R 2各自独立地表示选自H,烷基和芳基的基团; x表示1〜4的整数, y表示0〜4的整数。 x + y在2〜4的范围内; 条件是当x + y = 2时,x = 1和y = 1。