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    • 3. 发明授权
    • Manufacturing method of polarizing plate protective film, polarizing plate protective film, polarizing plate, and liquid crystal display device
    • 偏光板保护膜,偏光板保护膜,偏光板和液晶显示装置的制造方法
    • US08906279B2
    • 2014-12-09
    • US12308429
    • 2007-05-21
    • Kenzo KasaharaKoichi SaitoRumiko Yamada
    • Kenzo KasaharaKoichi SaitoRumiko Yamada
    • B29D11/00B29C47/88B29C47/00G02B1/10
    • B29C47/8845B29C47/0021B29C47/8805B29C47/886B29C47/887G02B1/105G02B1/14Y10T428/1036
    • A process for producing a cellulose-ester-resin-containing protective film for polarizers through film formation by melt casting. The protective film diminishes long-period optical unevenness and suffers no unevenness even after long-term storage. Also provided are a protective film for polarizers, a polarizer employing the film, and a liquid-crystal display. The process for producing a protective film for polarizers is a process for producing by the melt casting method a polarizer-protective film containing a cellulose ester resin. The process for producing a protective film for polarizers is characterized in that the protective film contains at least one compound selected among compounds represented by the following general formula (I) and compounds having an acrylate or methacrylate group and a phenolic hydroxy group in the same molecule and that the protective film extruded from a casting die at a draw ratio of 10-30 during film formation by melt casting is transferred while holding/pressing it between a touch roll having an elastic surface and a cooling roll.
    • 一种通过熔体浇铸通过成膜生产含纤维素酯树脂的偏光膜保护膜的方法。 保护膜即使在长时间保存后也会缩短长时间的光学不均匀性,也不会发生凹凸。 还提供了用于偏振器的保护膜,使用该膜的偏振器和液晶显示器。 用于制造偏光镜用保护膜的方法是通过熔融流延法制造含有纤维素酯树脂的偏振片保护膜的方法。 用于制造偏光镜保护膜的方法的特征在于,保护膜含有至少一种选自下述通式(I)表示的化合物和在同一分子中具有丙烯酸酯或甲基丙烯酸酯基和酚羟基的化合物 并且在通过熔融浇铸成膜期间以10-30的拉伸比从铸模中挤出的保护膜在将其压在具有弹性表面的接触辊和冷却辊之间的同时被转印。
    • 4. 发明申请
    • Manufacturing Method of Polarizing Plate Protective Film, Polarizing Plate Protective Film, Polarizing Plate, and Liquid Crystal Display Device
    • 偏光板保护膜,偏光板保护膜,偏光板和液晶显示装置的制造方法
    • US20100239787A1
    • 2010-09-23
    • US12308429
    • 2007-05-21
    • Kenzo KasaharaKoichi SaitoRumiko Yamada
    • Kenzo KasaharaKoichi SaitoRumiko Yamada
    • G02F1/1335B29C47/88C08K5/1535
    • B29C47/8845B29C47/0021B29C47/8805B29C47/886B29C47/887G02B1/105G02B1/14Y10T428/1036
    • A process for producing a cellulose-ester-resin-containing protective film for polarizers through film formation by melt casting. The protective film diminishes long-period optical unevenness and suffers no unevenness even after long-term storage. Also provided are a protective film for polarizers, a polarizer employing the film, and a liquid-crystal display. The process for producing a protective film for polarizers is a process for producing by the melt casting method a polarizer-protective film containing a cellulose ester resin. The process for producing a protective film for polarizers is characterized in that the protective film contains at least one compound selected among compounds represented by the following general formula (I) and compounds having an acrylate or methacrylate group and a phenolic hydroxy group in the same molecule and that the protective film extruded from a casting die at a draw ratio of 10-30 during film formation by melt casting is transferred while holding/pressing it between a touch roll having an elastic surface and a cooling roll.
    • 一种通过熔体浇铸通过成膜生产含纤维素酯树脂的偏光膜保护膜的方法。 保护膜即使在长时间保存后也会缩短长时间的光学不均匀性,也不会发生凹凸。 还提供了用于偏振器的保护膜,使用该膜的偏振器和液晶显示器。 用于制造偏光镜用保护膜的方法是通过熔融流延法制造含有纤维素酯树脂的偏振片保护膜的方法。 用于制造偏光镜保护膜的方法的特征在于,保护膜含有至少一种选自下述通式(I)表示的化合物和在同一分子中具有丙烯酸酯或甲基丙烯酸酯基和酚羟基的化合物 并且在通过熔融浇铸成膜期间以10-30的拉伸比从铸模中挤出的保护膜在将其压在具有弹性表面的接触辊和冷却辊之间的同时被转印。
    • 8. 发明申请
    • POLARIZING PLATE, LIQUID CRYSTAL DISPLAY, AND METHOD OF MANUFACTURING PROTECTIVE FILM FOR POLARIZING PLATE
    • 极化板,液晶显示器及制造用于极化板的保护膜的方法
    • US20110128478A1
    • 2011-06-02
    • US12999049
    • 2009-06-08
    • Rumiko Yamada
    • Rumiko Yamada
    • G02F1/1335G02B5/30G02B1/08
    • B32B27/08B32B23/08B32B27/30G02B1/105G02B1/14G02B5/3033G02F1/133528
    • Provided is a polarizing plate which is free from occurrence of cloudy unevenness appearing blurry on a screen of a liquid crystal display under heat and humidity conditions. The polarizing plate of the invention is characterized in that it comprises a first protective film, a second protective film and a polarizer sandwiched between the first and second protective films, wherein the first protective film is a laminated film composed of a cellulose ester resin layer (A) and an acryl resin layer (B), the cellulose ester resin layer (A) being a layer containing from 55 to 99% by mass of a cellulose ester resin and from 1 to 45% by mass of an acryl resin, provided that the total content of the cellulose ester resin and the acryl resin in the cellulose ester resin layer (A) is 100% by mass, and the acryl resin layer (B) being a layer containing from 1 to 45% by mass of a cellulose ester resin and from 55 to 99% by mass of an acryl resin, and wherein the second protective film contains a cellulose ester resin and a retardation adjusting agent, the cellulose ester resin layer (A) facing the polarizer.
    • 本发明提供一种偏振板,其在热和湿度条件下,在液晶显示器的屏幕上不出现模糊的混浊均匀性。 本发明的偏振片的特征在于,它包括第一保护膜,第二保护膜和夹在第一和第二保护膜之间的偏振片,其中第一保护膜是由纤维素酯树脂层( A)和丙烯酸树脂层(B),纤维素酯树脂层(A)为含有55〜99质量%的纤维素酯树脂和1〜45质量%的丙烯酸树脂的层,其条件是 纤维素酯树脂层(A)中的纤维素酯树脂和丙烯酸树脂的总含量为100质量%,丙烯酸树脂层(B)为含有1〜45质量%的纤维素酯 树脂和55〜99质量%的丙烯酸树脂,并且其中所述第二保护膜含有纤维素酯树脂和延迟调节剂,所述纤维素酯树脂层(A)面向所述偏振片。