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    OPTICAL FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE
    1.
    发明申请
    OPTICAL FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE 有权
    光学薄膜，偏光板和液晶显示装置

    公开(公告)号：US20150355491A1

    公开(公告)日：2015-12-10

    申请号：US14734528

    申请日：2015-06-09

    Applicant: FUJIFILM Corporation

    Inventor： Hirofumi TOYAMA ,  Yoshinori MAEDA ,  Isao FUJIWARA ,  Ryuji SANETO

    IPC: G02F1/13363 ,  G02F1/1335 ,  G02B1/04 ,  G02B5/30

    CPC classification number: G02B1/04 ,  B29D11/0073 ,  G02B5/3083 ,  G02F2001/133635 ,  Y10T428/10 ,  Y10T428/1036 ,  C08L1/02 ,  C08L33/08 ,  C08L33/10

    Abstract: A thin optical film with high hygrothermal durability and high front contrast, includes cellulose acylate whose degree of substitution of acyl group is from 2.0 to 2.6 and at least one optical performance developer, wherein the cellulose acylate has a mannose content of 0.2% by mass or less, and the optical film has a thickness of 40 μm or thinner and satisfies: MA≧MB×1.1  Formula I CA≧CB×1.1  Formula II wherein, A denotes the depthwise region ranging from one surface up to 2 μm depth of the optical film, and B denotes the depthwise region ranging from the other surface up to 2 μm depth, and MA and MB represent the mannose content in regions A and B; CA and CB represent the content of the optical performance developer in regions A and B; and MA, MB, CA and CB are given in % by mass.

    Abstract translation: 具有高湿热耐久性和高前向对比度的薄光学膜包括酰基取代度为2.0至2.6的纤维素酰化物和至少一种光学性能显影剂，其中酰化纤维素的甘露糖含量为0.2质量％，或 光学膜的厚度为40μm以下，满足：MA≥MB×1.1式ICA≥CB×1.1式II其中，A表示从光学的一个表面到2μm深度的深度方向 膜和B表示从另一个表面到2μm深度的深度区域，MA和MB表示区域A和B中的甘露糖含量; CA和CB表示A区和B区光学性能显影剂的含量; MA，MB，CA，CB为质量％。

    IMAGE DISPLAY APPARATUS, INFORMATION DISPLAY SYSTEM FOR VEHICLE, AND OPTICAL FILM
    4.
    发明申请
    IMAGE DISPLAY APPARATUS, INFORMATION DISPLAY SYSTEM FOR VEHICLE, AND OPTICAL FILM 有权

    公开(公告)号：US20220326424A1

    公开(公告)日：2022-10-13

    申请号：US17848764

    申请日：2022-06-24

    Applicant: FUJIFILM Corporation

    Inventor： Shinichi YOSHINARI ,  Isao FUJIWARA

    IPC: G02B5/30 ,  C09K19/56 ,  C09K19/38 ,  B60K35/00

    Abstract: Provided is a low-cost image display apparatus that has asymmetry in the display characteristics in the right-to-left direction, displays a clear image to the driver, exhibits an appropriate viewing angle control function that reduces reflected glare on the window glass, and is thinly made While causing no moire, and there are also provided an information display system for a vehicle, and an optical film. The image display apparatus includes a viewing-side polarizing plate, a liquid crystal cell, a backlight-side polarizing plate, an optical film, and a backlight in this order, in which the optical film includes an optically anisotropic layer and a polarizer in this order from the liquid crystal cell side, the absorption axis of the backlight-side polarizing plate and the absorption axis of the polarizer are parallel or orthogonal to each other, the optically anisotropic layer is optically uniaxially anisotropic, while in a case where the optic axis of the optically anisotropic layer is projected onto the polarizer as viewed from the viewing-side of the image display apparatus, the azimuthal angle of the optic axis is +50° to +70° or −50° to −70° with respect to the horizontal direction, the average tilt angle of the optic axis with respect to the main surface of the optically anisotropic layer is 20° to 45°, and the in-plane phase difference Re (550) of the optically anisotropic layer is 70 nm to 240 nm.

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