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    • 18. 发明授权
    • Drive method for a dual-frequency, dielectric anisotropy liquid crystal
optical device
    • 双频,介电各向异性液晶光学器件的驱动方法
    • US4836654A
    • 1989-06-06
    • US066720
    • 1987-06-24
    • Koh FujimuraMasakatsu HigaHisashi Aoki
    • Koh FujimuraMasakatsu HigaHisashi Aoki
    • G02F1/133G02F1/139
    • G02F1/1392
    • An ON electric field for turning on (allowing light transmission) a liquid crystal optical device and an OFF electric field for turning off (shielding light) the liquid crystal optical device are selectively applied to a liquid crystal material of the liquid crystal optical device. The ON electric field is applied so as to obliquely align liquid crystal molecules with respect to substrates constituting the liquid crystal optical device, thereby obtaining an ON state. The ON electric field has an electric field for driving the liquid crystal molecules and a non-electric field for generating a state wherein no electric field is applied to the liquid crystal molecules. The OFF electric field has an electric field for homeotropically aligning the liquid crystal molecules with respect to the substrates.
    • 液晶光学器件的液晶材料选择性地施加用于使液晶光学器件导通(允许光透射)的ON电场和用于关闭(屏蔽光)的OFF电场。 施加ON电场以使液晶分子相对于构成液晶光学器件的基板倾斜取向,从而获得ON状态。 ON电场具有用于驱动液晶分子的电场和用于产生其中没有电场施加到液晶分子的状态的非电场。 OFF电场具有用于使液晶分子相对于基板垂直取向的电场。
    • 20. 发明授权
    • Liquid crystal composition
    • 液晶组成
    • US4740328A
    • 1988-04-26
    • US10862
    • 1987-02-04
    • Koh Fujimura
    • Koh Fujimura
    • C09K19/46C09K19/30F02B75/02G02F1/13
    • C09K19/3068F02B2075/025
    • A liquid crystal composition contains at a predetermined mixing ratio: a first liquid crystal material of at least one compound represented by general formula (I): ##STR1## (wherein each of R.sup.1 and R.sup.2 is independently an alkyl group having 1 to 5 carbon atoms) and a second liquid crystal material of at least a compound represented by general formula (VII) among compounds represented by general formulas (II) to (VII): ##STR2## (wherein each of R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 is independently an alkyl group having 2 to 7 carbon atoms). The liquid crystal composition may optionally contain at least one compound represented by the following general formula: ##STR3## (wherein each of R.sup.9 and R.sup.10 is independently an alkyl group having 2 to 5 carbon atoms).
    • 液晶组合物以预定的混合比含有:通式(I)表示的至少一种化合物的第一液晶材料:(I)(其中R1和R2各自独立地为具有1〜 (II)至(VII)表示的化合物中的至少一种由通式(VII)表示的化合物的第二液晶材料:图像(II)至(VII) (VII)(VII)(其中R 3,R 4,R 5,R 6,R 7和R 8各自独立地为具有2至7个碳原子的烷基) 。 液晶组合物可任选地含有至少一种由以下通式表示的化合物:其中R 9和R 10各自独立地为具有2至5个碳原子的烷基。