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公开(公告)号：US20130342773A1
公开(公告)日：2013-12-26
申请号：US13978805
申请日：2012-01-09
IPC分类号： C09K19/58 , G02F1/1333
CPC分类号： G02F1/1333 , C09K19/02 , C09K19/408 , C09K19/52 , C09K19/582
摘要： A liquid crystal smectic A composition that can be switched by the application of different electric fields across it between a first stable state (left hand block in FIG. 4) and at least one second stable state (right hand block in FIG. 4) in which the composition is less ordered than in the first state. The radiation transmission properties of the first and second states are different. The composition comprises: (A) a liquid crystal material that has a positive dielectric anisotropy and that is a uniformly aligned smectic A structure when in the first state; (B) an ionic dopant giving a negative conductivity anisotropy in the liquid crystal material so that it is capable of disrupting the smectic A structure of the first state when subject to an electric field that causes the dopant to migrate through the composition, thereby causing the composition to switch into said at least one second state, and (C) optically anisotropic pigment particles having positive dielectric anisotropy dispersed in the composition, the largest dimension of the pigment particles being in the range of 10 nm to 1 μm. The composition, when in the first relatively stable state, is capable of undergoing smectic dynamic scattering due to electro-hydrodynamic instability under the influence of a sufficiently low frequency AC field, thereby disordering the liquid crystals and the pigment particles and thereby discouraging the pigment particles from aggregating together. The composition is suitable for use in displays and is especially resistant to degradation by ambient light and so can be used in outside applications.
摘要翻译： 液晶近晶A组合物，其可以通过在第一稳定状态（图4中的左侧块）和至少一个第二稳定状态（图4中的右侧块）之间施加不同的电场来切换 其组成不如第一状态那么有序。 第一和第二状态的辐射传播特性不同。 该组合物包含：（A）具有正介电各向异性且当处于第一状态时为均匀取向的近晶A结构的液晶材料; （B）在液晶材料中具有负电导率各向异性的离子掺杂剂，使得当受到使掺杂剂迁移通过组合物的电场时能够破坏第一状态的近晶A结构，从而导致 组成切换到所述至少一个第二状态，和（C）具有分散在组合物中的正介电各向异性的光学各向异性颜料颗粒，颜料颗粒的最大尺寸在10nm至1μm的范围内。 当处于第一相对稳定状态时，由于在足够低频率的AC场的影响下由于电流动力学不稳定性，组合物能够发生近晶的动态散射，从而使液晶和颜料颗粒失调，从而阻止颜料颗粒 从聚合在一起。 该组合物适用于显示器，并且特别耐环境光降解，因此可用于外部应用。
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公开(公告)号：US07916248B2
公开(公告)日：2011-03-29
申请号：US11664045
申请日：2005-09-27
IPC分类号： G02F1/1335
CPC分类号： G02F1/1347 , G02F1/133514 , G02F1/133553 , G02F1/13475 , G02F1/13476 , G02F1/1391 , G02F2203/34
摘要： A liquid crystal structure (200) comprising first and second reflective regions (214a, 214b, 214c) arranged to reflect respective first and second colours. The first and second reflective regions (214a, 214b, 214c) are disposed transversely to the direction of reflection (R). Each region includes a reflective back area and a selector (210) controllable to control light reflected from the region. Furthermore, a controllable reflector (212) is superposed over the reflective region in the direction of reflection (R) and controllable to transmit or scatter incident light.
摘要翻译： 一种液晶结构（200），包括布置成反射相应的第一和第二颜色的第一和第二反射区域（214a，214b，214c）。 第一和第二反射区域（214a，214b，214c）横向于反射方向（R）设置。 每个区域包括反射背部区域和可控制以控制从该区域反射的光的选择器（210）。 此外，可反射的反射器（212）在反射区域上沿反射方向（R）重叠并且可控制地传输或散射入射光。
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公开(公告)号：US20090015750A1
公开(公告)日：2009-01-15
申请号：US11664045
申请日：2005-09-27
IPC分类号： G02F1/13357 , G02F1/1335
CPC分类号： G02F1/1347 , G02F1/133514 , G02F1/133553 , G02F1/13475 , G02F1/13476 , G02F1/1391 , G02F2203/34
摘要： A liquid crystal structure (200) comprising first and second reflective regions (214a, 214b, 214c) arranged to reflect respective first and second colours. The first and second reflective regions (214a, 214b, 214c) are disposed transversely to the direction of reflection (R). Each region includes a reflective back area and a selector (210) controllable to control light reflected from the region. Furthermore, a controllable reflector (212) is superposed over the reflective region in the direction of reflection (R) and controllable to transmit or scatter incident light.
摘要翻译： 一种液晶结构（200），包括布置成反射相应的第一和第二颜色的第一和第二反射区域（214a，214b，214c）。 第一和第二反射区域（214a，214b，214c）横向于反射方向（R）设置。 每个区域包括反射背部区域和可控制以控制从该区域反射的光的选择器（210）。 此外，可反射的反射器（212）在反射区域上沿反射方向（R）重叠并且可控制地传输或散射入射光。
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公开(公告)号：US06191834B1
公开(公告)日：2001-02-20
申请号：US09091230
申请日：1998-10-07
IPC分类号： G02F11335
CPC分类号： G02F1/133617
摘要： A display device includes a shutter layer of liquid-crystal material arranged in cells to shutter input light selectively, a cover layer 5 on the shutter layer, and a set of phosphors 7 on the cover layer, corresponding to the cells, to be activated by the input light and provide the display image. To prevent crosstalk the active cell areas 10 defined by the electrode overlaps are smaller than the corresponding phosphors. This prevents crosstalk between cells even when input light that is not fully collimated is used and also allows space for thicker and/or broader electrodes 12 leading to the cells, reducing resistance, and for other components such as TFTs.
摘要翻译： 显示装置包括布置在单元中以选择性地快门输入光的液晶材料的快门层，快门层上的覆盖层5和对应于单元的覆盖层上的一组磷光体7，以被激活 输入光并提供显示图像。 为了防止串扰，由电极重叠限定的有源电池区域10比相应的荧光体小。 即使使用未完全准直的输入光，也可以防止单元之间的串扰，并且还允许用于导致电池的较厚和/或更宽的电极12的空间，降低电阻以及诸如TFT之类的其它部件。
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