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    • 5. 发明授权
    • Materials for aligning liquid crystals
    • 液晶校准材料
    • US5965691A
    • 1999-10-12
    • US886560
    • 1997-07-01
    • Wayne M. GibbonsPaul J. ShannonShao-Tang Sun
    • Wayne M. GibbonsPaul J. ShannonShao-Tang Sun
    • C08G73/10G02F1/1337C08G69/26
    • C08G73/1042C08G73/10C08G73/1039C08G73/1085G02F1/133723G02F1/133753G02F1/133788G02F2001/133742Y10S359/90Y10T428/1005Y10T428/1018Y10T428/1023Y10T428/31721
    • A process for aligning liquid crystals adjacent to a surface of an optical alignment layer comprising: exposing at least one optical alignment layer, comprising anisotropically absorbing molecules, to polarized light; the polarized light having a wavelength within the absorption band of said anisotropically absorbing molecules; wherein the exposed anisotropically absorbing molecules induce alignment of a liquid crystal medium at an angle + and - with respect to the direction of the polarization of the incident light beam and along the surface of the optical alignment layer; and applying a liquid crystal medium to said optical alignment layer; wherein said anisotropically absorbing molecules consist essentially of diaryl ketones, is described. The invention also is directed to a liquid crystal optical storage medium, a liquid crystal display element, and a liquid crystal diffractive optical element made by the process of the invention and to novel polyimide compositions that are useful as optical alignment layers in the process of the invention.
    • 一种用于使与液晶相邻的光学取向层的表面对准的方法,包括:将至少一个包括各向异性吸收分子的光学取向层暴露于偏振光; 所述偏振光具有在所述各向异性吸收分子的吸收带内的波长; 其中所述暴露的各向异性吸收分子相对于所述入射光束的偏振方向和沿着所述光学取向层的表面以+和 - 的角度引起液晶介质的对准; 以及向所述光取向层施加液晶介质; 其中所述的各向异性吸收分子基本上由二芳基酮组成。 本发明还涉及通过本发明的方法制造的液晶光学存储介质,液晶显示元件和液晶衍射光学元件,以及在该方法中可用作光学取向层的新型聚酰亚胺组合物 发明。