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    • 3. 发明授权
    • Liquid crystal display
    • 液晶显示器
    • US06602563B2
    • 2003-08-05
    • US09859906
    • 2001-05-17
    • Nobuyuki KobayashiTakeshi KitahoraFumie MotooriHideaki Ueda
    • Nobuyuki KobayashiTakeshi KitahoraFumie MotooriHideaki Ueda
    • C09K1920
    • C09K19/44C09K19/0208C09K19/42C09K19/46G02F1/13718Y10T428/10Y10T428/1036
    • A liquid crystal display which carries out matrix driving of a chiral nematic liquid crystal composition, which is capable of displaying an image theron continuously after an electric field applied thereto is turned off, by applying an electric field to the liquid crystal composition through a plurality of scan electrodes and a plurality of data electrodes which face and cross each other with the liquid crystal composition in-between. The nematic liquid crystal which is the main element of the liquid crystal composition mainly contains a liquid crystalline ester compound, a liquid crystalline stilbene compound, a liquid crystalline terphenyl compound or a liquid crystalline tolane compound. A driving section of the liquid crystal display drives the liquid crystal composition by a driving method which comprises a reset step of applying a reset pulse to cause the liquid crystal composition to come to a homeotropic state, a selection step of applying a selection pulse to select a final state of the liquid crystal composition and an evolution step of applying an evolution pulse to cause the liquid crystal composition to evolve to the selected final state and in which the selection of the final state of the liquid crystal composition is carried out by modulating the selection pulse.
    • 执行手性向列型液晶组合物的矩阵驱动的液晶显示器,其能够在施加电场后连续显示图像,通过对液晶组合物施加电场,通过多个 扫描电极和与液晶组合物相互面对并交叉的多个数据电极。 作为液晶组合物的主要成分的向列液晶主要含有液晶酯化合物,液晶二苯乙烯化合物,液晶三联苯化合物或液晶陶瓷化合物。 液晶显示器的驱动部分通过驱动方法驱动液晶组合物,该驱动方法包括施加复位脉冲以使液晶组合物达到垂直状态的复位步骤,施加选择脉冲以选择的选择步骤 液晶组合物的最终状态和施加放电脉冲以使液晶组合物放出到所选择的最终状态的演化步骤,并且其中通过调节液晶组合物的最终状态的选择来进行 选择脉冲。
    • 6. 发明授权
    • Liquid crystal composition and reflective type liquid crystal display
    • 液晶组成和反射型液晶显示
    • US06683672B2
    • 2004-01-27
    • US10154255
    • 2002-05-23
    • Hideaki UedaTakeshi KitahoraFumie Motoori
    • Hideaki UedaTakeshi KitahoraFumie Motoori
    • G02F11335
    • C09K19/586C09K19/02C09K19/0225C09K19/60G02F1/13718
    • A chiral nematic liquid crystal composition which contains a nematic liquid crystal mixture and a chiral agent, which exhibits a cholesteric phase at room temperature and which selectively reflects light of a specified wavelength, wherein the chiral agent has an anisotropy of dielectric constant within a range from 12 to 60. Such a chiral nematic liquid crystal composition may have a larger anisotropy of dielectric constant than the nematic liquid crystal mixture before being mixed with the chiral agent. Alternatively, in such a chiral nematic liquid crystal composition, the anisotropy of dielectric constant of the chiral agent may be larger than that of the nematic liquid crystal mixture. By filling such a chiral nematic liquid crystal composition between transparent substrates, a liquid crystal cell is fabricated, and by stacking such liquid crystal cells in three layers, a reflective type full-color liquid crystal display can be produced.
    • 一种含有向列液晶混合物和手性试剂的手征向列型液晶组合物,其在室温下显示出胆甾醇相,并选择性地反射特定波长的光,其中手性试剂的介电常数各向异性在 这种手性向列液晶组合物可以在与手性试剂混合之前具有比向列型液晶混合物更大的介电常数各向异性。 或者,在这种手性向列液晶组合物中,手性试剂的介电常数的各向异性可以大于向列型液晶混合物的各向异性。 通过在透明基板之间填充这样的手性向列液晶组合物,制造液晶单元,通过将这种液晶单元堆叠在三层中,可以制造反射型全色液晶显示器。