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    • 3. 发明申请
    • Bistable display device
    • 双稳态显示装置
    • US20060176438A1
    • 2006-08-10
    • US10549050
    • 2004-03-11
    • Ian Sage
    • Ian Sage
    • C09K19/02
    • G02B26/026G09F9/372
    • A bistable display device comprises two cell walls enclosing a sheet having a plurality of cavities each containing a rotatable bicoloured sphere within a liquid crystal material carrier (15), and electrodes for applying an electrical field. The spheres and cavities are provided with a surface alignment which imposes a substantially unidirectional director alignment on the liquid crystal material in contact with them. The elastic distortion free energy of the liquid crystal material in each cavity is arranged to be zero when the preferred direction of the suspended spheres coincides with that of the surrounding cavity, e.g. black upwards. It is also zero when the sphere is rotated through 180° to present its opposite hemisphere which has a contrasting optical appearance, e.g. black downwards. Between these two states, there is an energetic barrier determined by the elastic constants of the liquid crystal which provides both a threshold for switching and improved bistability. During production of the sheet, alignment may be enhanced by application of an electric or magnetic field during curing or cooling of the components. The display may be addressed in a known multiplexed manner.
    • 双稳态显示装置包括两个单元壁,其包围具有多个空腔的薄片,每个空腔在液晶材料载体(15)内包含可旋转的双色球,以及用于施加电场的电极。 球体和空腔具有表面对准,其在与它们接触的液晶材料上施加基本上单向的导向器对准。 当悬浮球体的优选方向与周围腔体的优选方向一致时,每个空腔中的液晶材料的弹性失真自由能被布置为零。 黑色向上。 当球体旋转180°时,它也为零,以呈现其相对的半球,其具有对比的光学外观,例如, 黑色向下 在这两种状态之间,存在由液晶的弹性常数确定的能量势垒,其提供了切换的阈值和改善的双稳态性。 在片材的制造过程中,可以通过在组件的固化或冷却期间施加电场或磁场来提高对准。 显示器可以以已知的多路复用方式来寻址。