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    • 1. 发明申请
    • ELECTRO-OPTICAL DEVICES FROM BANANA-SHAPED LIQUID CRYSTALS
    • 来自香蕉形液晶的电光装置
    • WO0234861A2
    • 2002-05-02
    • PCT/US0148021
    • 2001-10-26
    • UNIV KENT STATE OHIOJAKLI ANTALCHIEN LIANG CHYKRUERKE DANIELSAWADE HANSHEPPKE GERD
    • JAKLI ANTALCHIEN LIANG-CHYKRUERKE DANIELSAWADE HANSHEPPKE GERD
    • C09K19/02C09K19/20C09K19/22
    • C09K19/0266C09K19/02C09K19/0225C09K19/2007C09K19/22C09K2019/0481
    • A liquid crystal device comprising tilted smectic phases of banana-shaped liquid crystal molecules is disclosed. A method for fabricating a light modulating device is also disclosed. The method comprises the steps of providing a pair of substrates with a cell gap therebetween and permanently disposing at least one banana-shaped liquid crystal material into said cell gap. The present invention also provides a method of generating an image, comprising providing a pair of substrates with a cell gap therebetween, providing transparent electrodes on each of the substrates adjacent to the cell gap, disposing at least one banana-shaped liquid crystal material into the cell gap; and applying an electric field across the electrodes. The tilted smectic phases of banana-shaped liquid crystal may be in either a racemic or a chiral state. The application of a sufficiently high electric field transitions the banana-shaped liquid crystal material between the racemic and chiral states, and both the racemic and the chiral states are stable in the absence of an electric field.
    • 公开了一种包含香蕉形液晶分子的倾斜近晶相的液晶装置。 还公开了一种用于制造光调制装置的方法。 该方法包括以下步骤:提供其间具有单元间隙的一对基板,并将至少一种香蕉形液晶材料永久地置于所述单元间隙中。 本发明还提供了一种产生图像的方法,该方法包括提供其间具有单元间隙的一对衬底,在与单元间隙相邻的每个衬底上提供透明电极,将至少一种香蕉形液晶材料置于 细胞间隙; 并在电极上施加电场。 香蕉形液晶的倾斜近晶相可以是外消旋或手性状态。 足够高的电场的施加使香蕉形液晶材料在外消旋状态和手性状态之间转变,并且在没有电场的情况下外消旋状态和手性状态都稳定。
    • 9. 发明专利
    • ES2129463T3
    • 1999-06-16
    • ES92925047
    • 1992-10-30
    • UNIV KENT STATE OHIO
    • DOANE WILLIAM JYANG DENG-KECHIEN LIANG-CHY
    • C09K19/02C09K19/54C09K19/58G02F1/01G02F1/1333G02F1/1334G02F1/137
    • A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal having positive dielectric anisotropy and including chiral material in an amount effective to form focal conic and twisted planar textures, the polymer being distributed in phase separated domains in the liquid crystal cell in an amount that stabilizes the focal conic and twisted planar textures in the absence of a field and permits the liquid crystal to change textures upon the application of a field. In one embodiment, the material is light scattering in a field-OFF condition and optically clear in a field-ON condition, while in another embodiment, the material is optically clear in a field-OFF condition and light scattering in a field-ON condition. In still another embodiment, the material exhibits stability at zero field in a colored, light reflecting state, a light scattering state and multiple stable reflecting state therebetween, as well as being optically clear in the presence of a field.