Naphthyl organic compounds
    3.
    发明授权
    Naphthyl organic compounds 失效
    萘基有机化合物

    公开(公告)号:US5496500A

    公开(公告)日:1996-03-05

    申请号:US283714

    申请日:1994-08-01

    摘要: Liquid crystal compounds of formula (I) are described, where formula (I) is given as R.sub.1 --A--(X.sub.m --(B).sub.n --R.sub.2 where A is selected from nathyl, flourinated naphthyl, brominated naphthyl, B is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine, R.sub.1 and R.sub.2 are independently selected from alkyl, alkoxy, alkynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, X is selected from C.tbd.C, COO and C.tbd.C, m is 0 or 1, n is 0 or 1 where m is 1 and n is 0 where m is 0; provided that where A is naphthyl, n is 1 and m is 0 then B is selected from methylated phenyl, brominated phenyl, thiophene, pyrimidine and pyridine; and further provided that where A is naphthyl, X is C.tbd.C, m is 1 and n is 1, then B is selected from thiophene, pyrimidine and pyridine. Also described are liquid crystal compounds suitable for inclusion in devices utilizing pretransitional characteristics of liquid crystalline materials in the isotropic phase and described by formula (II): R.sub.3 --J--(Y).sub.p --(Z).sub.q --R.sub. 4, where J is selected from nathyl, fluorinated naphthyl, brominated naphthyl, Z is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine, R.sub.1 and R.sub.2 are independently selected from alkyl, alkoxy, alkynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, Y is selected from C.dbd.C, COO and C.dbd.C, p is 0 or 1, q is 0 or 1 where p is 1 and q is 0 where p is 0.

    摘要翻译: 描述了式(I)的液晶化合物,其中式(I)为R1-A-(Xm-(B)n-R2,其中A选自萘基,氟化萘基,溴化萘基,B选自苯基 ,甲基化苯基,溴化苯基,氟化苯基,噻吩,嘧啶和吡啶,R1和R2独立地选自烷基,烷氧基,炔基,硫代烷基,Br,CN,SCN,NCS,全氟烷基,全氟烷氧基和氢,X选自C 3,C,COO和C 3 B C,m为0或1,n为0或1,其中m为1,n为0,其中m为0;条件是其中A为萘基,n为1,m为0,B为 选自甲基化苯基,溴化苯基,噻吩,嘧啶和吡啶;并且进一步规定,其中A为萘基,X为C 3 C 10,m为1,n为1,则B为噻吩,嘧啶和吡啶。 是适于包含在利用液晶材料的预过滤特性的器件中的液晶化合物 各向同性相并由式(II)描述:R3-J-(Y)对(Z)qR 4,其中J选自萘基,氟化萘基,溴化萘基,Z选自苯基,甲基化苯基,溴化苯基 ,氟化苯基,噻吩,嘧啶和吡啶,R1和R2独立地选自烷基,烷氧基,炔基,硫代烷基,Br,CN,SCN,NCS,全氟烷基,全氟烷氧基和氢,Y选自C = C,COO和C = C,p为0或1,q为0或1,其中p为1,q为0,其中p为0。

    Biphenyl esters and liquid crystal materials and devices containing them
    5.
    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。

    Smectic liquid crystal devices
    6.
    再颁专利
    Smectic liquid crystal devices 失效
    近晶体液晶装置

    公开(公告)号:USRE37509E1

    公开(公告)日:2002-01-15

    申请号:US08371035

    申请日:1995-01-10

    IPC分类号: G02F113

    摘要: A method, device, and material for providing a fast switching liquid crystal display employs the ferro electric effect of chiral smectic liquid crystal material. To provide a uniform appearance the liquid crystal material is arranged to have a long cholesteric pitch at a temperature close to a smectic/cholesteric phase transistion temperature. This long cholesteric pitch allows liquid crystal molecules to cool from the cholesteric to smectic phase with a uniform alignment. The smectic material is contained in a cell between wells (2, 3) bearing electrodes (5, 6) and surface treated to provide homogeneous alignment of liquid crystal material (7).

    摘要翻译: 用于提供快速切换液晶显示器的方法,装置和材料采用手性近晶液晶材料的铁电效应。 为了提供均匀的外观,液晶材料被布置成在接近于近晶/胆甾醇相转移温度的温度下具有长的胆甾醇型沥青。 这种长的胆甾醇型间距允许液晶分子以均匀排列从胆甾醇相冷却到近晶相。 近晶材料包含在承载电极(5,6)的孔(2,3)之间的电池中,并进行表面处理以提供液晶材料(7)的均匀取向。

    Smectic liquid crystal devices
    7.
    发明授权
    Smectic liquid crystal devices 失效
    近晶体液晶装置

    公开(公告)号:US5061047A

    公开(公告)日:1991-10-29

    申请号:US279553

    申请日:1988-12-01

    摘要: A method, device, and material for providing a fast switching liquid crystal display employs the ferro electric effect of chiral smectic liquid crystal material. To provide a uniform appearance the liquid crystal material is arranged to have a long cholesteric pitch at a temperature close to a smectic/cholesteric phase transistion temperature. This long cholesteric pitch allows liquid crystal molecules to cool from the cholesteric to smectic phase with a uniform alignment. The smectic material is contained in a cell between walls (2, 3) bearing electrodes (5, 6) and surface treated to provide homogeneous alignment of liquid crystal material (7).

    摘要翻译: 用于提供快速切换液晶显示器的方法,装置和材料采用手性近晶液晶材料的铁电效应。 为了提供均匀的外观,液晶材料被布置成在接近于近晶/胆甾醇相转移温度的温度下具有长的胆甾醇型沥青。 这种长的胆甾醇型间距允许液晶分子以均匀排列从胆甾醇相冷却到近晶相。 近晶材料包含在承载电极(5,6)的壁(2,3)之间的电池中,并进行表面处理以提供液晶材料(7)的均匀排列。

    Smectic liquid crystal devices
    8.
    发明授权
    Smectic liquid crystal devices 失效
    近晶体液晶装置

    公开(公告)号:US4969719A

    公开(公告)日:1990-11-13

    申请号:US279555

    申请日:1988-12-01

    CPC分类号: G02F1/141

    摘要: A liquid crystal display is arranged to provide very low minimum light trmission in one of its two switchable states. This makes it useful for a shutter (FIG. 1) and for high contrast digital displays (FIG. 2). A layer of a chiral smectic liquid crystal material is contained between two cell walls carrying electrode structures. The liquid crystal material has the following phases with temperature: isotropic.revreaction.cholesteric.revreaction.chiral smectic.revreaction.solid. The cholesteric pitch is large. The cell walls are surface treated to provide a parallel alignment of liquid crystal molecules. Crossed polarizers are arranged either side of the cell walls, one aligned with its optical axis parallel to the surface alignment of the adjacent cell wall. The device is switched by means of .+-.-d.c. voltage pulses and utilizes the ferro electric effect.

    摘要翻译: 液晶显示器被布置成在其两个可切换状态之一提供非常低的最小光传输。 这使得它对于快门(图1)和用于高对比度数字显示器(图2)是有用的。 在携带电极结构的两个电池壁之间包含一层手性近晶液晶材料。 液晶材料具有以下温度:各向同性 - >胆固醇 - >手性近晶 - >固体。 胆甾醇沥青很大。 细胞壁被表面处理以提供液晶分子的平行取向。 交叉的偏振器布置在单元壁的任一侧,一个对准其光轴平行于相邻单元壁的表面对准。 该设备通过+ / - d.c进行切换。 电压脉冲并利用铁电效应。

    Integrated electro-optical liquid crystal device and method of using
such a device
    10.
    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。