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    • 9. 发明申请
    • RETARDATION FILM, A METHOD FOR PREPARING RETARDATION FILM AND POLARIZER COMPRISING THE RETARDATION FILM
    • 延迟膜,制备延迟膜的方法和包含延迟膜的偏振片
    • US20100068419A1
    • 2010-03-18
    • US12448754
    • 2008-04-23
    • Sin Young KimEun Kyung KimMoon Soo ParkYong Il ChoSung Ho ChunHee Jean LeeHeon Kim
    • Sin Young KimEun Kyung KimMoon Soo ParkYong Il ChoSung Ho ChunHee Jean LeeHeon Kim
    • C09K19/04
    • G02B5/3016Y10T428/1005Y10T428/1014
    • There is provided a retardation film capable of adjusting an angle between a proceeding direction of a film and an optical axis of liquid crystal by employing an alignment layer formed of polymers including norbornene and improving thermal stability and photoreaction rate, a method for preparing the retardation film and a polarizer comprising the retardation film. The retardation film includes a substrate, an alignment layer formed on the substrate and made of polymers including norbornene, and an alignment layer fixing layer formed on the alignment layer and made of liquid crystal materials; the method for preparing a retardation film includes: forming a polymer layer by coating a substrate with a polymer solution including norbornene and drying the polymer solution, forming an alignment layer by irradiating the copolymer layer with linearly polarized ultraviolet rays in a predetermined direction relative to a proceeding direction of a film to give an orientation to the copolymer layer, forming a liquid crystal layer on the alignment layer by coating the alignment layer with a nematic liquid crystal solution and drying the nematic liquid crystal solution, and fixing the orientation of the liquid crystal layer by curing the liquid crystal layer; and the polarizer includes the retardation film and a polarizer film, both of which are stacked with each other. The retardation film has improved thermal stability and light reaction speed, and the retardation film whose optical axis has a desired orientation angle relative to a proceeding direction of the retardation film may be easily prepared through the irradiation of polarized ultraviolet rays.
    • 提供一种能够通过使用由包含降冰片烯的聚合物形成的取向层并且提高热稳定性和光反应率来调节膜的行进方向和液晶的光轴之间的角度的延迟膜,制备相位差膜的方法 以及包括相位差膜的偏振片。 相位差膜包括:基板,形成在基板上的取向膜,由包含降冰片烯的聚合物构成;取向膜固定层,形成在取向膜上,由液晶材料制成; 制造相位差膜的方法包括:通过用包含降冰片烯的聚合物溶液涂布基材来形成聚合物层,并干燥聚合物溶液,通过在线性偏振紫外线沿预定方向照射共聚物层而相对于 膜的前进方向,以获得共聚物层的取向,在取向层上形成液晶层,通过用向列型液晶层涂布取向层并干燥向列型液晶溶液,并固定液晶的取向 通过固化液晶层; 并且偏振器包括彼此堆叠的延迟膜和偏光膜。 延迟膜具有改善的热稳定性和光反应速度,并且可以通过偏振紫外线的照射容易地制备相对于延迟膜的行进方向具有期望的取向角的延迟膜。