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    • 1. 发明专利
    • Protection film for polarizer plate lamination, and protection film laminating polarizer plate
    • 偏光板层压保护膜和保护膜层压偏光板
    • JP2008009413A
    • 2008-01-17
    • JP2007142605
    • 2007-05-29
    • Toyo Kohan Co Ltd東洋鋼鈑株式会社
    • FUJII YUKIHARUTANAKA TATSUHIKOMAEDA TAKESHITAGUMA KOJIOTA KAZUHIDE
    • G02B5/30B32B27/36
    • PROBLEM TO BE SOLVED: To provide a protection film having no bright point defect even when flaws or the like adhere on a surface, and to provide a protection film laminating polarizer plate laminated with the protection film.
      SOLUTION: A polyester film 9 is laminated on the one-side face of a polycarbonate film 8 having optical isotropy. A releasing protection film 6 composed by applying a releasing agent 12 on the polyester film surface of a three-layer film with no extension and non-alignment laminated with a low photo-elastic resin film 10 having photo-elastic coefficient of 50×10
      -12 m
      2 /N or less in an absolute value on the other face. The releasing protection film 6 is laminated on the one-side face of a polarizer plate 3 so that the releasing agent application face comes into contact with the polarizer plate 3. A surface protection film 5 is laminated on the other one-side face of the polarizer plate 3 to produce a protection film laminating polarizer plate.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使当表面上附着有瑕疵等时,也提供没有亮点缺陷的保护膜,并且提供与保护膜层压的保护膜层压偏振片。 解决方案:聚酯膜9层压在具有光学各向同性的聚碳酸酯膜8的单面上。 通过在光弹性系数为50×10 5的低光弹性树脂膜10上层压有三层膜的聚酯膜表面而不延伸和不对准地层叠脱模剂12, SP> -12 m 2 / N或更小的绝对值。 剥离保护膜6层压在偏光板3的一侧面上,使得防粘剂涂布面与偏振片3接触。表面保护膜5层叠在 偏光板3制成保护膜层压偏光板。 版权所有(C)2008,JPO&INPIT