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    OPTICAL STRUCTURE AND DISPLAY DEVICE
    1.
    发明申请
    OPTICAL STRUCTURE AND DISPLAY DEVICE 有权

    公开(公告)号：US20210191196A1

    公开(公告)日：2021-06-24

    申请号：US17194683

    申请日：2021-03-08

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Yosuke UEBA ,  Tatsuaki INOUE

    IPC: G02F1/13357 ,  G02B30/27 ,  F21V8/00 ,  G02B27/01 ,  G02B27/09 ,  G02F1/1335

    Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.

    OPTICAL STRUCTURE AND DISPLAY DEVICE
    3.
    发明申请
    OPTICAL STRUCTURE AND DISPLAY DEVICE 有权

    公开(公告)号：US20220197089A1

    公开(公告)日：2022-06-23

    申请号：US17654830

    申请日：2022-03-15

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Yosuke UEBA ,  Tatsuaki INOUE

    IPC: G02F1/13357 ,  G02B30/27 ,  F21V8/00 ,  G02B27/01 ,  G02B27/09 ,  G02F1/1335

    Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.

    OPTICAL STRUCTURE AND DISPLAY DEVICE
    5.
    发明申请
    OPTICAL STRUCTURE AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200124909A1

    公开(公告)日：2020-04-23

    申请号：US16605642

    申请日：2018-04-19

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Yosuke UEBA ,  Tatsuaki INOUE

    IPC: G02F1/1335 ,  G02B5/02

    Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.

    SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE
    6.
    发明申请
    SURFACE LIGHT SOURCE DEVICE AND DISPLAY DEVICE 审中-公开
    表面光源装置和显示装置

    公开(公告)号：US20170003436A1

    公开(公告)日：2017-01-05

    申请号：US15125717

    申请日：2015-03-27

    Applicant: DAI NIPPON PRINTING CO., LTD.

    Inventor： Tatsuaki INOUE ,  Masahiro GOTOU ,  Hiroki MATSUSHITA

    IPC: F21V8/00

    CPC classification number: G02B6/0053 ,  G02B5/0215 ,  G02B5/0226 ,  G02B5/0278 ,  G02B5/045 ,  G02B6/00 ,  G02B6/0038 ,  G02B6/0043 ,  G02B6/0051 ,  G02B6/0061

    Abstract: A surface light source device (20) includes a light guide plate (30), an optical sheet (60) and a light source (24). The optical sheet has unit prisms projecting toward the light guide plate and arranged in a first direction. The unit prism is composed of a first prism surface (71) facing the first direction, and a second prism surface (72) facing the other side of the first direction. The second prism surface (72) includes element surfaces (73) of different inclining angles. An inclining angle (θt) of each element surface, a length (Wt) of each element surface along the first direction and a length (Wb2) of the second prism surface (72) along the first direction satisfy predetermined conditions.

    Abstract translation: 表面光源装置（20）包括导光板（30），光学片（60）和光源（24）。 光学片具有朝向导光板突出并且沿第一方向布置的单位棱镜。 单位棱镜由面向第一方向的第一棱镜面（71）和面向第一方向另一侧的第二棱镜面（72）构成。 第二棱镜面72具有不同倾斜角的元件面73。 每个元件表面的倾斜角（θt），沿着第一方向的每个元件表面的长度（Wt）和第二棱镜表面（72）沿着第一方向的长度（Wb2）满足预定条件。

    OPTICAL STRUCTURE AND DISPLAY DEVICE
    7.
    发明申请
    OPTICAL STRUCTURE AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200292883A1

    公开(公告)日：2020-09-17

    申请号：US16891424

    申请日：2020-06-03

    Applicant: Dai Nippon Printing Co., Ltd.

    Inventor： Yosuke UEBA ,  Tatsuaki INOUE

    IPC: G02F1/13357 ,  G02B30/27 ,  F21V8/00 ,  G02B27/01 ,  G02B27/09 ,  G02F1/1335

    Abstract: An optical structure includes a high refractive-index layer and a low refractive-index layer laminated on the high refractive-index layer and having a refractive index lower than that of the high refractive-index layer, and is disposed on a display surface of a display device. An interface between the layers has a concave-and-convex shape, and each of a concavity and a convexity in the shape has a flat portion extending in a surface direction of the layers. A side surface of the concave-and-convex shape, which extends between the flat portions of the concavity and convexity, is a curved surface or a folded surface that is convex to the low refractive-index layer. A difference between a maximum angle and a minimum angle, which are defined between the side surface of the concave-and-convex shape and a normal direction of the layers, is not less than 3 degrees and not more than 60 degrees.

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