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    PHOSPHOR-CONTAINING FILM AND BACKLIGHT UNIT
    21.
    发明申请
    PHOSPHOR-CONTAINING FILM AND BACKLIGHT UNIT 审中-公开

    公开(公告)号：US20200032137A1

    公开(公告)日：2020-01-30

    申请号：US16590897

    申请日：2019-10-02

    Applicant: FUJIFILM Corporation

    Inventor： Akiko WATANO ,  Tatsuya OBA ,  Hirofumi TOYAMA

    IPC: C09K11/02 ,  F21V8/00

    Abstract: Provided is an organic electroluminescent display device that further suppresses reflection of external light when viewed in an oblique direction; a phase difference film; and a circularly polarizing plate. This display device has an organic electroluminescent display panel, and a circularly polarizing plate arranged on the display panel, in which the circularly polarizing plate has a polarizer and a phase difference film, the phase difference film has, from a side of the polarizer, a negative A-plate, and a positive A-plate, the in-plane retardation of the negative A-plate at a wavelength of 550 nm is more than 50 nm and less than 90 nm, and the in-plane retardation of the positive A-plate at a wavelength of 550 nm is 100 to 200 nm, and the angle formed by the in-plane slow axis of the negative A-plate and the in-plane slow axis of the positive A-plate is 45°±10°.

    PLANAR LIGHT SOURCE, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY DEVICE
    22.
    发明申请
    PLANAR LIGHT SOURCE, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190049762A1

    公开(公告)日：2019-02-14

    申请号：US16152801

    申请日：2018-10-05

    Applicant: FUJIFILM Corporation

    Inventor： Takashi YONEMOTO ,  Hirofumi TOYAMA ,  Tatsuya OBA

    IPC: G02F1/13357 ,  G02F1/1335

    Abstract: A thin planar light source, a backlight unit using the same, and a liquid crystal display device using the backlight unit includes: a heat radiation element; a reflective element; an excitation light source; a brightness conversion element; and a wavelength homogenizing element, wherein the excitation light source has a light emitting surface between the reflective element and an emission surface of the planar light source, emits a light having a first wavelength, the wavelength conversion element is positioned between the reflective element and the brightness homogenizing element, is thermally coupled to a heat radiation element, absorbs the light having a first wavelength, and emits light having a wavelength different from the light having a first wavelength, and reflectance of the brightness homogenizing element with respect to light on the excitation light source side has distribution in an in-plane.

    LIGHTING DEVICE
    23.
    发明申请
    LIGHTING DEVICE 审中-公开

    公开(公告)号：US20180314102A1

    公开(公告)日：2018-11-01

    申请号：US16012340

    申请日：2018-06-19

    Applicant: FUJIFILM Corporation

    Inventor： Hirofumi TOYAMA ,  Ryo SATAKE ,  Takashi YONEMOTO ,  Tatsuya OBA ,  Natsuru CHIKUSHI

    IPC: G02F1/1347 ,  G02F1/1335 ,  H01L33/50

    Abstract: There is provided a lighting device using a wavelength conversion sheet used in a liquid crystal display or the like, and an object of the invention is to provide a lighting device having satisfactory durability. The object is achieved by a lighting device including: a point light source; a wavelength conversion sheet; and a light intensity reduction member arranged between the point light source and the wavelength conversion layer, in which the light intensity reduction member reduces peak illuminance of light that is applied by the point light source on a light incident surface of a wavelength conversion sheet by 10% to 80%, and absorbance of light having a wavelength of 450 nm measured by using an integrating sphere is less than 5%.

    OPTICAL FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE
    27.
    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％。

    OPTICAL FILM, OPTICAL COMPENSATION FILM, POLARZING PLATE AND LIQUID CRYSTAL DISPLAY
    28.
    发明申请
    OPTICAL FILM, OPTICAL COMPENSATION FILM, POLARZING PLATE AND LIQUID CRYSTAL DISPLAY 审中-公开
    光学膜，光学补偿膜，偏光板和液晶显示

    公开(公告)号：US20140055732A1

    公开(公告)日：2014-02-27

    申请号：US14070773

    申请日：2013-11-04

    Applicant: FUJIFILM Corporation

    Inventor： Hajime NAKAYAMA ,  Hirofumi TOYAMA ,  Yuta TAKAHASHI

    IPC: G02F1/13363

    CPC classification number: G02F1/13363 ,  C08B3/00 ,  C08J5/18 ,  C08J2301/10 ,  G02B1/04 ,  G02B5/305 ,  G02B5/3083 ,  G02F1/133528 ,  G02F1/1393 ,  G02F2001/133531 ,  G02F2001/133637 ,  G02F2001/133638 ,  G02F2202/40 ,  G02F2413/02 ,  Y10T428/1036

    Abstract: An optical film is provided and has retardations satisfying relations (1) to (3): 0≦Re(550)≦10;  (1) −25≦Rth(550)≦25; and  (2) |I|+|II|+|III|+|IV|>0.5 (nm),  (3) with definitions: I=Re(450)−Re(550); II=Re(650)−Re(550); III=Rth(450)−Rth(550); and IV=Rth(650)−Rth(550), wherein Re(450), Re(550) and Re(650) are in-plane retardations measured with lights of wavelength of 450, 550 and 650 nm, respectively; and Rth(450), Rth(550) and Rth(650) are retardations in a thickness direction of the optical film, which are measured with lights of wavelength of 450, 550 and 650 nm, respectively.

    Abstract translation: 提供了一种光学膜，并具有满足关系式（1）至（3）的延迟：0 @ Re（550）@ 10;（1）-25 @ Rth（550）@ 25; 和（2）| I | + | II | + | III | + | IV |> 0.5（nm），（3）具有定义：I = Re（450）-Re（550） II = Re（650）-Re（550）; III = Rth（450）-Rth（550）; 并且IV = Rth（650）-Rth（550），其中Re（450），Re（550）和Re（650）分别是用波长为450,550和650nm的光测量的面内延迟; 和Rth（450），Rth（550）和Rth（650）分别是在450,550和650nm的波长的光下测量的光学膜的厚度方向的延迟。

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