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    Display device and method for selecting optical film of display device
    1.
    发明授权
    Display device and method for selecting optical film of display device 有权

    公开(公告)号：US10890704B2

    公开(公告)日：2021-01-12

    申请号：US16068541

    申请日：2017-01-06

    Applicant: DAI NIPPON PRINTING CO., LTD. ,  Yasuhiro Koike

    Inventor： Takashi Kuroda ,  Yasuhiro Koike

    IPC: G02B5/30 ,  G09F9/00 ,  H01L51/50 ,  H05B33/02 ,  G02F1/13363 ,  G02F1/1335

    Abstract: There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a polarizer a and an optical film X on a surface on a light emitting surface side of a display element, wherein L1, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L2, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition.

    Liquid crystal display apparatus
    2.
    发明授权
    Liquid crystal display apparatus 有权
    液晶显示装置

    公开(公告)号：US09261640B2

    公开(公告)日：2016-02-16

    申请号：US14378169

    申请日：2013-02-14

    Applicant: KEIO UNIVERSITY ,  DAI NIPPON PRINTING CO., LTD. ,  NITTO DENKO CORPORATION ,  NITTO JUSHI KOGYO CO., LTD.

    Inventor： Yasuhiro Koike ,  Runa Nakamura ,  Fumihiro Arakawa ,  Hiroshi Yamamoto ,  Takehito Fuchida ,  Shouhei Maezawa ,  Hiroyuki Takemoto ,  Nao Murakami ,  Tsuyoshi Ishikawa ,  Eizaburo Higuchi

    IPC: G02F1/1335 ,  F21V8/00

    CPC classification number: G02B6/0038 ,  G02B5/045 ,  G02B6/0053 ,  G02B6/0068 ,  G02F1/133528 ,  G02F1/133536 ,  G02F1/1336

    Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.

    Abstract translation: 一种液晶显示装置，包括在第一第二偏振片之间包括液晶单元的液晶显示面板; 和面光源装置。 表面光源装置包括光源单元，导光板，用于输出在第一方向上具有最大强度方向性的第一方向性光，该方向性光在与第一方向大致平行的平面中从光输出表面的法线方向形成预定角度 光的引导方向，并且具有在所述平面中振荡的偏振光分量的高比率;以及棱镜片，其被配置为将所述第一方向性光转换成从所述法线方向在预定角度内的沿第二方向指向的第二方向性光 的导光板的光输出表面，同时基本保持第一方向性光的偏振状态。

    Image display device
    5.
    发明授权
    Image display device 有权

    公开(公告)号：US11204524B2

    公开(公告)日：2021-12-21

    申请号：US16068044

    申请日：2017-01-05

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Yasuhiro Koike ,  Takashi Kuroda ,  Kana Yamamoto

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

    Abstract: The present invention aims to provide an image display device including an optical film having a thickness suitable for practical use without including any special inorganic material, wherein the image display device has high color rendering properties and is capable of minimizing the occurrence of blackout and interference colors (rainbow unevenness) even when the image display device includes light sources that emit light having a narrow emission spectrum. The present invention provides an image display device including an optical film having an in-plane birefringence and a polarizer in this order, wherein the optical film and the polarizer are disposed to form an angle of about 45° between a slow axis of the optical film and an absorption axis of the polarizer, the optical film has a retardation of 3000 nm or more, and light incident on the optical film provides at least 50% coverage of ITU-R BT.2020.

    Display device, and method for selecting optical film for display device
    6.
    发明授权
    Display device, and method for selecting optical film for display device 有权

    公开(公告)号：US10677975B2

    公开(公告)日：2020-06-09

    申请号：US16080260

    申请日：2017-02-22

    Applicant: DAI NIPPON PRINTING CO., LTD. ,  Yasuhiro Koike

    Inventor： Takashi Kuroda ,  Yasuhiro Koike

    IPC: G02F1/1335 ,  G02B5/30 ,  H01L51/50 ,  G02F1/13363

    Abstract: There is provided a display device exhibiting a good color reproducibility, even when observed through polarized sunglasses. A display device comprises a display element, and a polarizer a and an optical film X on a surface on a light emitting surface side of the display element, wherein L1, which is the light incident vertically on the optical film X, among light incident on the optical film X from the display element side, satisfies a specific condition, and L2, which is the light emitting vertically from the light emitting surface side of the optical film X, and passing through a polarizer b having the absorption axis parallel to the absorption axis of the polarizer a, satisfies a specific condition.

    LIQUID CRYSTAL DISPLAY APPARATUS
    7.
    发明申请
    LIQUID CRYSTAL DISPLAY APPARATUS 有权
    液晶显示装置

    公开(公告)号：US20150029442A1

    公开(公告)日：2015-01-29

    申请号：US14378169

    申请日：2013-02-14

    Applicant: KEIO UNIVERSITY ,  DAI NIPPON PRINTING CO., LTD. ,  NITTO DENKO CORPORATION ,  NITTO JUSHI KOGYO CO., LTD.

    Inventor： Yasuhiro Koike ,  Runa Nakamura ,  Fumihiro Arakawa ,  Hiroshi Yamamoto ,  Takehito Fuchida ,  Shouhei Maezawa ,  Hiroyuki Takemoto ,  Nao Murakami ,  Tsuyoshi Ishikawa ,  Eizaburo Higuchi

    IPC: F21V8/00 ,  G02F1/1335

    CPC classification number: G02B6/0038 ,  G02B5/045 ,  G02B6/0053 ,  G02B6/0068 ,  G02F1/133528 ,  G02F1/133536 ,  G02F1/1336

    Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.

    Abstract translation: 一种液晶显示装置，包括在第一第二偏振片之间包括液晶单元的液晶显示面板; 和面光源装置。 表面光源装置包括光源单元，导光板，用于输出在第一方向上具有最大强度方向性的第一方向性光，该方向性光在与第一方向大致平行的平面中从光输出表面的法线方向形成预定角度 光的引导方向，并且具有在所述平面中振荡的偏振光分量的高比率;以及棱镜片，其被配置为将所述第一方向性光转换成从所述法线方向在预定角度内的沿第二方向指向的第二方向性光 的导光板的光输出表面，同时基本保持第一方向性光的偏振状态。

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