公开(公告)号：US06291034B1

公开(公告)日：2001-09-18

申请号：US09150737

申请日：1998-09-10

申请人： Kenneth Johnson Toyne ,  John William Goodby ,  Alexander Seed ,  George William Gray ,  Damien Gerad McDonnel ,  Edward Peter Raynes ,  Sally Elizabeth Day ,  Kenneth John Harrison ,  Michael Hird

发明人： Kenneth Johnson Toyne ,  John William Goodby ,  Alexander Seed ,  George William Gray ,  Damien Gerad McDonnel ,  Edward Peter Raynes ,  Sally Elizabeth Day ,  Kenneth John Harrison ,  Michael Hird

IPC分类号： C09K1932

CPC分类号： C07D239/26 ,  C07C255/52 ,  C07C255/54 ,  C07C323/62 ,  C07C331/28 ,  C07D333/20 ,  C07D333/24 ,  C09K19/322 ,  C09K19/3441 ,  C09K19/3458 ,  C09K19/3461 ,  C09K19/3497 ,  C09K19/544 ,  Y10T428/10

摘要： Liquid crystal compounds of formula (I) are described, where formula (I) is given as R1—A—(X)m—(B)n—R2 where A is selected from naphthyl, fluorinated naphthyl, brominated naphthyl, B is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine. R1 and R2 are independently selected from alkyl, alkoxy, akynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, X is selected from C≡C, COO and C≡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≡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): R3—J—(Y)p—(Z)q—R4, where J is selected from nathhyl, fluorinated naphthyl, brominated naphthyl, Z is selected from phenyl, methylated phenyl, brominated phenyl, fluorinated phenyl, thiophene, pyrimidine and pyridine, R1 and R2 are independently selected from alkyl, alkoxy, alkynyl, thioalkyl, Br, CN, SCN, NCS, perfluoroalkyl, perfluoroalkoxy and hydrogen, Y is selected from C═C, COO and C═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： 描述式（I）的液晶化合物，其中式（I）给出为R1-A-（X）m-（B）n-R2，其中A选自萘基，氟化萘基，溴代萘基，B被选定 苯基，甲基化苯基，溴化苯基，氟化苯基，噻吩，嘧啶和吡啶。 R 1和R 2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 = C，COO和C = C，m为0或1，n 是0或1，其中m是1，n是0，其中m是0; 条件是其中A为萘基，n为1，m为0，则B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 = C，m为1且n为1，则B为噻吩，嘧啶和吡啶。 还描述了适于包含在利用各向同性相中并由式（II）表示的液晶材料的预过滤特性的装置中的液晶化合物：R3-J-（Y）对（Z）q-R4，其中J被选择 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。

公开(公告)号：US06222605B1

公开(公告)日：2001-04-24

申请号：US08727972

申请日：1996-10-09

申请人： Martin David Tillin ,  Edward Peter Raynes ,  Michael John Towler

发明人： Martin David Tillin ,  Edward Peter Raynes ,  Michael John Towler

IPC分类号： G02F1139

CPC分类号： G02F1/1395 ,  G02F2001/13775

摘要： A surface mode liquid crystal device is made by forming a cell containing a mixture of a liquid crystal and a pre-polymer. An electric field is applied across the cell to arrange the liquid crystal in a predetermined surface mode state, such as the V state in the case of a pi-cell configuration. The liquid crystal is held in this state by the field while the pre-polymer is polymerized or cross-linked, for instance by ultraviolet irradiation. The electric field is then removed. The polymer stabilizes the predetermined surface mode state, for instance preventing relaxation of the V state to twist or splay state in the pi-cell configuration.

摘要翻译： 通过形成含有液晶和预聚物的混合物的电池来制造表面模式液晶装置。 电场被施加在电池单元上以将液晶布置在预定的表面模式状态，例如在pi单元配置的情况下的V状态。 例如通过紫外线照射，预聚物聚合或交联时，液晶保持在该状态。 然后去除电场。 聚合物稳定预定的表面模式状态，例如阻止V状态的松弛，以便在pi细胞构型中扭转或张开状态。

公开(公告)号：US4084884A

公开(公告)日：1978-04-18

申请号：US768371

申请日：1977-02-14

申请人： Edward Peter Raynes

发明人： Edward Peter Raynes

IPC分类号： G02F1/1337 ,  G02F1/139 ,  G02F1/13

CPC分类号： G02F1/1396 ,  G02F1/1337

摘要： It has been found that twisted nematic liquid display devices can have a patchy appearance as a result of two problems concerned with degeneracy of the orientation of the molecules in the "on" and "off" states respectively. In the present invention these two problems are solved together by using as the liquid crystal material a naturally optically active material having a molecular helical pitch not less than twice the spacing between the substrates of the device cell, and(1) by treating and later arranging the surfaces of the substrates so that the molecules in the cell liquid crystal layer all lie generally obliquely to the plane of the substrates in the "off" state, or(2) by treating and later arranging the surfaces of the substrates so that the liquid crystal molecules adjacent to one substrate lie in the plane of the substrate but the molecules adjacent to the other substrate lie oblique to that substrate whereby the molecules in the interior of the layer lie slightly oblique to both substrates.In accordance with (1), the substrates may be rubbed in the conventional way and two unit vectors defined by the rubbing directions may be specially selected having regard to the natural molecular helix of the liquid crystal molecules to give the desired molecular arrangement in the cell.In the embodiment (2), both substrates may be deposited with a dielectric coating evaporated with an angle of incidence .theta. in the range 15.degree. .ltoreq..theta..ltoreq.45.degree. and one of the substrates may be rubbed before arranging the respective projections of the evaporation direction on the substrates to be perpendicular to one another.

摘要翻译： 已经发现，扭曲向列液体显示装置由于分别在“开”和“断”状态的分子的取向的简并性的两个问题的结果可能具有斑驳的外观。 在本发明中，通过将液晶材料用作分子螺距不小于器件单元的基板间距的两倍的天然光学活性材料，以及（1）通过处理和后处理 基底的表面，使得细胞液晶层中的分子在“关闭”状态下一般对基底的平面不利，或者（2）通过处理和降低基底的表面，使得液体 在基片平面附近的一个基片上的晶体分子，但与其他基底相似的分子偏离到底层中的分子在层内轻轻偏离到两个基底上的分子。

公开(公告)号：US3974087A

公开(公告)日：1976-08-10

申请号：US451547

申请日：1974-03-15

申请人： George William Gray ,  Kenneth John Harrison ,  David Sanderson Hulme ,  Edward Peter Raynes

发明人： George William Gray ,  Kenneth John Harrison ,  David Sanderson Hulme ,  Edward Peter Raynes

IPC分类号： C07C205/06 ,  C07C205/11 ,  C07C205/12 ,  C07C205/35 ,  C09K19/12 ,  C09K19/54 ,  C09K3/34 ,  G02F1/13

CPC分类号： C09K19/54 ,  C07C205/06 ,  C07C205/11 ,  C07C205/12 ,  C07C205/35 ,  C09K19/12 ,  C09K19/126 ,  C07C2103/18

摘要： A range of eutectic mixtures containing at least three compounds having the formula ##SPC1##Where X.sup.1 is an alkyl group, an alkoxy group or a substituted phenyl group ##SPC2##Where R is an alkyl or alkoxy group, are described. The eutectic mixtures extend the temperature ranges over which their constituent compounds exhibit liquid crystal properties and are thus useful in liquid crystal devices operating in those temperature ranges.

摘要翻译： 描述了含有至少三种具有式WHERE X1的化合物的一系列共晶混合物，其中烷基，烷氧基或取代的苯基，其中R是烷基或烷氧基。 共晶混合物延长了其组成化合物表现出液晶性质的温度范围，因此可用于在这些温度范围内工作的液晶装置。

公开(公告)号：US3944817A

公开(公告)日：1976-03-16

申请号：US414097

申请日：1973-11-08

申请人： Cyril Hilsum ,  Frederick Alistair Johnson ,  Edward Peter Raynes

发明人： Cyril Hilsum ,  Frederick Alistair Johnson ,  Edward Peter Raynes

IPC分类号： G02F1/133 ,  G02F1/135 ,  H01J31/50

CPC分类号： G02F1/135 ,  G02F1/13318

摘要： An optical intensity adjustment device for adjusting the intensity of optical radiation incident thereon includes a first transparent conducting electrode, a second transparent conducting electrode, a layer of a twisted nematic liquid crystal material contained between the first electrode and the second electrode, an optical polarisation polariser located adjacent to the first electrode for linearly polarising optical radiation incident on the said layer, via the first electrode, an optical polarisation analyser located adjacent to the second electrode for analysing the plane of polarisation of optical radiation emergent from the said layer, means for applying a voltage between the first electrode and the second electrode and, electrically connected to said means for applying a voltage, photoelectric means for sampling the intensity of optical radiation incident on the device and for allowing the voltage applied between the first electrode and the second electrode to be adjusted in response to a change in the intensity of optical radiation sampled by the photoelectric means. The device may be incorporated within and as part of an optical image intensifier or a television camera.

摘要翻译： 用于调节入射到其上的光辐射强度的光强度调节装置包括第一透明导电电极，第二透明导电电极，包含在第一电极和第二电极之间的扭转向列型液晶材料层，光偏振极化器 位于所述第一电极附近，用于通过所述第一电极入射到所述层上的线偏振光学辐射，邻近所述第二电极定位的光学偏振分析器，用于分析从所述层出射的光辐射的偏振平面， 第一电极和第二电极之间的电压，并且与所述用于施加电压的装置电连接，用于对入射在该装置上的光辐射的强度进行采样的光电装置，并允许施加在第一电极和第二电极之间的电压 调整在res 对由光电装置采样的光辐射的强度的变化的响应。 该装置可以并入作为光学图像增强器或电视摄像机的一部分内。