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    • 3. 发明授权
    • Organic polymer O-plate compensator for improved gray scale performance in twisted nematic liquid crystal displays
    • 有机聚合物O板补偿器,用于改善扭曲向列型液晶显示器的灰度级性能
    • US06320634B1
    • 2001-11-20
    • US09388131
    • 1999-09-01
    • Bruce K. WinkerHong-Son RyangLeslie F. Warren, Jr.Charles RosenblattZili LiYoung J. Chung
    • Bruce K. WinkerHong-Son RyangLeslie F. Warren, Jr.Charles RosenblattZili LiYoung J. Chung
    • G02F11335
    • G02F1/133636G02B5/3016G02F1/133632G02F1/133634G02F2413/10G02F2413/105
    • An O-plate compensator comprising an organic liquid crystal polymer, and methods for fabricating the same, are disclosed. The compensator is a uniaxial birefringent thin film with its extraordinary axis oriented obliquely with respect to the surface of the film. (It is noted that the birefringent thin film could be weakly biaxial.) The oblique orientation of the liquid crystal director, which is parallel to the films extraordinary axis, is achieved by casting an organic thin film onto a surface specially prepared for a orienting liquid crystals, such as obliquely deposited SiO, mechanically rubbed alignment agents. The film can either be cast from a solution of the liquid crystal polymer or from a reactive liquid crystal monomer having a nematic phase. Any solvent that may be used during the fabrication process is evaporated off and the organic thin film is held at a temperature in its nematic phase. If a reactive monomer is used, the film is then photopolymerized. Alternative embodiments of an organic O-plate include the use of smectic-A and smectic-C materials. Fabrication techniques employing these materials are described.
    • 公开了一种包含有机液晶聚合物的O板补偿器及其制造方法。 补偿器是单轴双折射薄膜,其非常轴相对于膜的表面倾斜定向。 (注意,双折射薄膜可以是弱双轴的)。通过将有机薄膜浇注到特别为取向液体制备的表面上来实现与膜异常轴平行的液晶指向矢的倾斜取向 晶体,如倾斜沉积的SiO,机械摩擦对准剂。 该膜可以由液晶聚合物的溶液或具有向列相的反应性液晶单体浇铸。 在制造过程中可以使用的任何溶剂被蒸发掉,有机薄膜保持在其向列相的温度。 如果使用反应性单体,则将该膜光聚合。 有机O板的替代实施方案包括使用近晶A和近晶C材料。 描述了采用这些材料的制造技术。
    • 7. 发明授权
    • Tractable silica sols and nanocomposites therefrom
    • 可从其中获得可溶性二氧化硅溶胶和纳米复合材料
    • US07253226B1
    • 2007-08-07
    • US11202293
    • 2005-08-11
    • Hong-Son Ryang
    • Hong-Son Ryang
    • C08K3/34
    • B01J21/08B82Y30/00C01B33/14
    • Disclosed are silica sols made by combining at least one hydrolysable silane, at least one organofunctional silane, at least one boron oxide compound, and a liquid, or silica sols made by combining at least one hydrolysable silane, at least one organofunctional silane, at least one acid catalyst, and a liquid to provide an intermediate sol and combining at least one base catalyst with the intermediate sol. Also disclosed are nanocomposites containing the silica sols and at least one of metal nanoparticle, metal-chalcogenide nanoparticle, metal oxide nanoparticle, and metal phosphate nanoparticle. Further disclosed are composites containing a polymer material and at least one of the silica sol and the nanocomposite.
    • 公开了通过将至少一种可水解硅烷,至少一种有机官能硅烷,至少一种氧化硼化合物和液体组合而成的二氧化硅溶胶,或通过将至少一种可水解硅烷,至少一种有机官能硅烷,至少 一种酸催化剂和液体,以提供中间体溶胶并将至少一种碱催化剂与中间体溶胶组合。 还公开了含有硅溶胶和金属纳米颗粒,金属硫属元素纳米颗粒,金属氧化物纳米颗粒和金属磷酸盐纳米颗粒中的至少一种的纳米复合材料。 还公开了包含聚合物材料和硅溶胶和纳米复合材料中的至少一种的复合材料。