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    • 61. 发明专利
    • Retardation plate, novel polymer, optical film and image display apparatus
    • 延迟板,新型聚合物,光学膜和图像显示装置
    • JP2006065258A
    • 2006-03-09
    • JP2004266757
    • 2004-09-14
    • Nitto Denko Corp日東電工株式会社
    • OMORI YUTAKASAKAMOTO MICHIENAKANO SHUSAKUKONISHI TAKAHISAUMEMOTO SEIJI
    • G02B5/30C08F16/38G02F1/13363
    • C08F216/38C08F8/48C08F216/06C08J5/18G02B5/3083Y10T428/1036C08F8/28C08F16/06
    • PROBLEM TO BE SOLVED: To provide a retardation plate which to made a relatively thin layer and exhibits wavelength dispersion of about λ/2 or λ/4 retardation with respect to light rays at a wavelength λ in approximately the entire visible region. SOLUTION: The retardation plate comprises a monolayer film having a birefringent chain polymer orientated, wherein the polymer has a repeating unit of the structure of general formula (V). In the general formula (V), R 3 represents a hydrogen atom or a 1-8C alkyl group; each of R 4 and R 8 independently represents a hydrogen atom, 1-4C linear or branched alkyl group, 1-4C linear or branched alkoxyl group, 1-4C linear or branched thioalkoxyl group, halogen, nitro group, amino group, hydroxyl group or thiol group (with the proviso that R 4 and R 8 are not simultaneously hydrogen atoms); and each of R 5 to R 7 independently represents a hydrogen atom or a substituent. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供相对于大致整个可见区域中的相对于波长λ的光线而言,具有相对薄的层并且具有约λ/ 2或λ/ 4延迟的波长色散的延迟板。 解决方案:相位差板包括具有双折射链聚合物取向的单层膜,其中聚合物具有通式(V)结构的重复单元。 在通式(V)中,R 3代表氢原子或1-8C烷基; 1-4个直链或支链烷基,1-4C直链或支链烷氧基,1-4C直链或支链烷氧基,1-4C直链或支链烷基,1-4C直链或支链烷氧基,1-4C直链或支链烷基, 支链硫代烷氧基,卤素,硝基,氨基,羟基或硫醇基(条件是R 4 和R 8 不同时为氢原子); 并且R 5 至R 7 中的每一个独立地表示氢原子或取代基。 版权所有(C)2006,JPO&NCIPI