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    Liquid crystal display device
    2.
    发明授权
    Liquid crystal display device 有权

    公开(公告)号：US09645438B2

    公开(公告)日：2017-05-09

    申请号：US14924879

    申请日：2015-10-28

    Applicant: FUJIFILM Corporation

    Inventor： Megumi Sekiguchi ,  Hiromichi Furukawa ,  Naoyoshi Yamada

    IPC: G02F1/1335 ,  G02B5/30 ,  G02F1/1333

    CPC classification number: G02F1/133528 ,  G02B5/305 ,  G02F1/133602 ,  G02F2001/133302 ,  G02F2001/133562 ,  G02F2001/133567 ,  G02F2201/50 ,  G02F2201/54 ,  G02F2202/28

    Abstract: Provided is a liquid crystal display device including a liquid crystal cell having a liquid crystal layer between two glass substrates, a front-side polarizing plate provided on a front side of the liquid crystal cell, a rear polarizer provided on a rear side of the liquid crystal cell, and a backlight provided on a rear side of the rear polarizer, in which the front-side polarizing plate has a first protective film, a polarizer, and a second protective film in this order from a surface side opposite to the liquid crystal cell, the first protective film in the front-side polarizing plate is a film including a polyester resin or a polycarbonate resin as a main component, an Re of the first protective film is 3000 nm or higher, an equilibrium moisture content of the second protective film at 25° C. and a relative humidity of 60% is in a range of 1% to 3%, and in the second protective film, a contractile force in a direction orthogonal to an absorption axis of the polarizer is 1.3 times or higher a contractile force in a direction parallel to the absorption axis of the polarizer which is capable of suppressing luminance unevenness at the four corners of the panel when a backlight is turned on after the liquid crystal display device has been stored in a hot and humid environment.

    Backlight unit and liquid crystal display device
    3.
    发明授权
    Backlight unit and liquid crystal display device 有权

    公开(公告)号：US11243343B2

    公开(公告)日：2022-02-08

    申请号：US16808070

    申请日：2020-03-03

    Applicant: FUJIFILM Corporation

    Inventor： Shinya Watanabe ,  Megumi Sekiguchi ,  Yujiro Yanai ,  Naoyoshi Yamada ,  Yukito Saitoh

    IPC: F21V8/00 ,  G02B3/00

    Abstract: Display performance can be improved by reducing light leak in an oblique direction at the time of black display while increasing front brightness. Provided is a backlight unit including: a light collimating member in which a lens array is formed on one surface of a transparent substrate and a plurality of truncated cones are arranged on another surface of the transparent substrate; a light guide plate; and a light source, in which the truncated cone on the light collimating member has a shape in which a width decreases away from the transparent substrate in a height direction, a position of each of lenses of the lens array deviates from a position of the truncated cone corresponding to the lens to move away from the light source in a direction that connects a center of the lens and the light source most adjacent to the lens, an optical axis of the lens is arranged to pass through a slope of the truncated cone corresponding to the lens, the light guide plate and a surface of the truncated cone opposite to the transparent substrate are in contact with each other, and the shape of the truncated cone of the light collimating member satisfies specific expressions.

    Phosphor-containing film and backlight unit
    4.
    发明授权
    Phosphor-containing film and backlight unit 有权

    公开(公告)号：US10982135B2

    公开(公告)日：2021-04-20

    申请号：US16288503

    申请日：2019-02-28

    Applicant: FUJIFILM Corporation

    Inventor： Tatsuya Oba ,  Natsuru Chikushi ,  Kenichi Kakishita ,  Masayuki Kusumoto ,  Ryo Satake ,  Megumi Sekiguchi

    IPC: H01L33/50 ,  C09K11/02 ,  G02B5/20 ,  F21V8/00

    Abstract: A phosphor-containing film capable of suppressing deterioration of phosphor and capable of suppressing generation of luminescent spots and the reduction in luminance due to a defect of the resin layer. The film includes: a phosphor-containing layer having a resin layer which has impermeability to oxygen and is provided with a plurality of discretely arranged concave portions, and a plurality of fluorescent regions, each of which is arranged in the concave portion of the resin layer and contains a phosphor that deteriorates through a reaction with oxygen when exposed to oxygen; and a first substrate film and a second substrate film, which are respectively laminated on one main surface and the other main surface of the phosphor-containing layer, in which the fluorescent regions contain a binder and quantum dots serving as the phosphor.

    Fingerprint recognition sensor and optical element
    5.
    发明授权
    Fingerprint recognition sensor and optical element 有权

    公开(公告)号：US12118819B2

    公开(公告)日：2024-10-15

    申请号：US18474861

    申请日：2023-09-26

    Applicant: FUJIFILM Corporation

    Inventor： Ryoji Himeno ,  Shinichi Morishima ,  Yuki Hirai ,  Makoto Kamo ,  Megumi Sekiguchi

    IPC: G06V40/13 ,  G02B5/20

    CPC classification number: G06V40/1318 ,  G02B5/208

    Abstract: A fingerprint recognition sensor having an excellent S/N ratio and capable of realizing thinning and an optical element including the fingerprint recognition sensor. The fingerprint recognition sensor includes a light-receiving element; and an optical element including a near infrared absorbing dichroic substance, in which a fingerprint reading surface is positioned on a side of the optical element opposite to the light-receiving element side. The optical element has an absorption axis with respect to near infrared light in an in-plane direction. When linearly polarized light of near infrared light orthogonal to the absorption axis is radiated from a normal direction of the optical element and from a direction inclined by 45° from the normal direction at an azimuthal angle orthogonal to the absorption axis, an absorbance during the radiation from the direction inclined by 45° from the normal direction is more than an absorbance during the radiation from the normal direction.

    Liquid crystal display device
    7.
    发明授权
    Liquid crystal display device 有权
    液晶显示装置

    公开(公告)号：US09229263B2

    公开(公告)日：2016-01-05

    申请号：US14133001

    申请日：2013-12-18

    Applicant: FUJIFILM Corporation

    Inventor： Megumi Sekiguchi ,  Shinichi Morishima ,  Takashi Yonemoto ,  Hiroshi Sato ,  Taketo Otani

    IPC: G02F1/1335

    CPC classification number: G02F1/133504

    Abstract: A liquid crystal display device includes first and second polarizers with absorption axes orthogonal to each other; first and second substrates between the first and second polarizers and at least one of which has a transparent electrode; and a twisted-nematic liquid crystal cell disposed between the first and second substrates, wherein a light scattering film is provided at a viewing side of the first and second polarizers and includes a support member and a liquid crystal layer composed of a liquid crystal compound, wherein the pitch of the liquid crystal compound ranges between 0.35 μm and 3 μm and is oriented at 45° relative to a liquid-crystal direction of the liquid crystal display device, wherein the liquid crystal layer has a thickness between 0.17 μm and 10 μm, and wherein a weighted scattering area ratio of a goniophotometer scattering profile of the light scattering film satisfies the following expression. S 60 / ( S 0 ) 2 × 1000 > 40 S 0 = ∑ S 0 ⁡ ( θ ) × θ ∑ S 0 ⁡ ( θ ) S 60 = ∑ S 60 ⁡ ( θ ) × exp ⁡ ( - 0.2 × θ ) ∑ S 60 ⁡ ( θ )

    Abstract translation: 液晶显示装置包括具有彼此正交的吸收轴的第一和第二偏振器; 第一和第二偏振器之间的第一和第二基板，并且其中至少一个具有透明电极; 以及设置在第一和第二基板之间的扭曲向列型液晶单元，其中在第一和第二偏振器的观察侧设置有光散射膜，并且包括支撑构件和由液晶化合物构成的液晶层， 其中液晶化合物的间距在0.35μm和3μm之间，相对于液晶显示装置的液晶方向取向为45°，其中液晶层的厚度为0.17μm至10μm， 并且其中光散射膜的测角光度计散射分布的加权散射面积比满足以下表达式。 S 60 /（S 0）2×1000> 40 S 0 =ΣS 0⁡（＆thetas;）×＆thetas; ΣS 0⁡（＆thetas;）S 60 =ΣS 60⁡（＆thetas）×exp⁡（ - 0.2×＆thetas;）ΣS 60⁡（＆Thetas;）

    Light guide film and backlight unit
    8.
    发明授权
    Light guide film and backlight unit 有权

    公开(公告)号：US11016240B2

    公开(公告)日：2021-05-25

    申请号：US16544303

    申请日：2019-08-19

    Applicant: FUJIFILM Corporation

    Inventor： Megumi Sekiguchi ,  Naoyoshi Yamada

    IPC: F21V8/00

    Abstract: A light guide film that is bendable, has a strong resistance to impact, and can perform the adjustment of the brightness per region, and a backlight unit. The light guide film includes a plurality of optical units each of which includes a light guide portion and an emission portion; and a resin portion that is filled between the optical units adjacent to each other, in which the light guide portion guides light incident from a light source to the emission portion, the emission portion emits light guided and incident from the light guide portion from a light emission surface, the plurality of optical units are arranged in a plane direction of the light emission surfaces such that the light emission surfaces of the emission portions are parallel to each other, and the light guide portions and the emission portions are arranged in the plane direction of the light emission surfaces.

    Phosphor-containing film and backlight unit
    10.
    发明授权
    Phosphor-containing film and backlight unit 有权

    公开(公告)号：US11136496B2

    公开(公告)日：2021-10-05

    申请号：US16287256

    申请日：2019-02-27

    Applicant: FUJIFILM Corporation

    Inventor： Megumi Sekiguchi ,  Tatsuya Oba ,  Kenichi Kakishita ,  Masayuki Kusumoto ,  Natsuru Chikushi

    IPC: C09K11/02 ,  F21V8/00 ,  C09K11/70 ,  H01L33/50 ,  G02B5/20 ,  C09K11/56

    Abstract: A phosphor-containing film contains a phosphor such as a quantum dot and is capable of suppressing deterioration of phosphor even where the film is formed into a laminated structure; and a backlight unit including the phosphor-containing film as a wavelength converting member. The film includes: a phosphor-containing layer in which a plurality of fluorescent regions, each of which contains a phosphor that deteriorates through reaction with oxygen when exposed to oxygen, are discretely arranged and a resin layer having impermeability to oxygen is arranged among the plurality of the discretely arranged fluorescent regions; and a first substrate film and a second substrate film, which are respectively laminated on both main surfaces of the phosphor-containing layer, in which the resin layer has a Knoop hardness of 115 N/mm2 to 285 N/mm2, a creep recovery rate of 22% or less, and an elastic recovery rate of 60% or more.

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