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    VIDEO DISPLAY DEVICE
    1.
    发明公开
    VIDEO DISPLAY DEVICE 审中-公开

    公开(公告)号：EP3346322A1

    公开(公告)日：2018-07-11

    申请号：EP16841116.3

    申请日：2016-08-30

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： KUMAMOTO, Yasuhiro ,  SHINYA, Takeichi ,  HIGA, Koujirou ,  OFUJI, Masaaki ,  TAKEUCHI, Taizou ,  KUGIMARU, Tadahiro

    IPC: G02F1/13357 ,  F21S2/00 ,  F21V7/00 ,  G02F1/1333 ,  G09F9/00

    CPC classification number: G02F1/133608 ,  F21S2/00 ,  F21V7/00 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133606 ,  G09F9/00 ,  G09G3/3426

    Abstract: Provided is a video display device capable of improving contrast achieved by local dimming. The video display device includes: a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed; an optical member that is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate; and support members each of which is provided between the light source substrate and the optical member, and supports the optical member. The reflection sheet includes intersection portions where the partitioning walls formed in a first direction and the partitioning walls formed in a second direction crossing the first direction cross each other, and further includes linear portions formed in parallel with the first direction or the second direction. Each of the support members is disposed in a recess portion formed in a corresponding linear portion.

    BACKLIGHT DEVICE AND LIQUID-CRYSTAL DISPLAY DEVICE
    2.
    发明公开
    BACKLIGHT DEVICE AND LIQUID-CRYSTAL DISPLAY DEVICE 审中-公开
    背光装置和液晶显示装置

    公开(公告)号：EP3318792A1

    公开(公告)日：2018-05-09

    申请号：EP16817419.1

    申请日：2016-06-06

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： YAMANO, Yoshikazu ,  SASAKI, Hisanori ,  KUMAMOTO, Yasuhiro

    IPC: F21S2/00 ,  G02F1/13357 ,  F21Y115/10

    CPC classification number: G02F1/133611 ,  F21S2/00 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133606 ,  G02F1/133608

    Abstract: A backlight device includes a plurality of light sources arranged in a shape of a matrix, a reflective sheet having partition walls arranged to surround each of the plurality of light sources in four directions and reflecting light emitted from the plurality of light sources, a luminance uniformity plate located above the reflective sheet and uniforming luminance of the light emitted from the plurality of light sources and light reflected by the reflective sheet, and a support member supporting the luminance uniformity plate. The reflective sheet has an opening portion in a portion, of at least one partition wall of the partition walls arranged in the four directions, which is other than four corners, and the support member has a shield portion disposed in the opening portion and shielding the opening portion.

    Abstract translation: 本发明提供一种背光源装置，其特征在于，具备：矩阵状配置的多个光源;反射片，其具有隔壁，该多个光源在四个方向上分别包围所述多个光源，并反射从所述多个光源射出的光; 位于所述反射片上方并且使从所述多个光源发射的光和由所述反射片反射的光的亮度均匀的平板以及支撑所述亮度均匀板的支撑构件。 所述反射片在除了四个角之外的沿四个方向排列的所述隔壁的至少一个隔壁中的至少一个隔壁的部分中具有开口部，并且所述支撑构件具有设置在所述开口部中的屏蔽部， 开口部分。

    BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE
    5.
    发明公开
    BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE 有权
    背光装置和液晶显示装置

    公开(公告)号：EP3318793A1

    公开(公告)日：2018-05-09

    申请号：EP16817420.9

    申请日：2016-06-06

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： SASAKI, Hisanori ,  YAMANO, Yoshikazu ,  KUMAMOTO, Yasuhiro

    IPC: F21S2/00 ,  G02F1/13357 ,  F21Y115/10

    Abstract: A backlight device includes a plurality of light sources arranged in a shape of a matrix, a reflective sheet having partition walls arranged to surround each of the plurality of light sources in four directions and reflecting light emitted from the plurality of light sources, a luminance uniformity plate located above the reflective sheet and uniforming luminance of the light emitted from the plurality of light sources and light reflected by the reflective sheet, and a diffuser panel located above the luminance uniformity plate and diffusing light exiting from the luminance uniformity plate. A gap between the partition wall and the luminance uniformity plate is 5% to 30% of an optical distance defined by a distance between the reflective sheet and the diffuser panel, and a gap between the luminance uniformity plate and the diffuser panel is not greater than 50% of the optical distance.

    Abstract translation: 本发明提供一种背光源装置，其特征在于，具备：矩阵状配置的多个光源;反射片，其具有隔壁，该多个光源在四个方向上分别包围所述多个光源，并反射从所述多个光源射出的光; 位于所述反射片上方并且使从所述多个光源发射的光和由所述反射片反射的光的亮度均匀的平板以及位于所述亮度均匀板上方并且漫射从所述亮度均匀板出射的光的扩散板。 分隔壁与亮度均匀板之间的间隙为由反射片与扩散板之间的距离限定的光学距离的5％至30％，并且亮度均匀板与扩散板之间的间隙不大于 50％的光学距离。

    BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS
    7.
    发明公开
    BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS 审中-公开

    公开(公告)号：EP3396233A1

    公开(公告)日：2018-10-31

    申请号：EP16877918.9

    申请日：2016-08-24

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： YAMANO, Yoshikazu ,  SASAKI, Hisanori ,  KUMAMOTO, Yasuhiro

    IPC: F21S2/00 ,  F21V3/00 ,  F21V3/04 ,  G02F1/13357 ,  F21Y115/10

    CPC classification number: G02F1/133611 ,  G02F1/133605 ,  G02F1/133606 ,  G02F1/133608 ,  G02F2001/133601

    Abstract: A backlight device (20) includes: a reflection sheet (23) having a reflection surface which is divided into a plurality of reflection regions (232) by a plurality of partitions (231) that are each a ridge-shaped projection; light sources (21) disposed in the respective reflection regions (232); a luminance uniformizing plate (24) that transmits light incident from a first surface opposed to the reflection surface, and emits the light from the second surface; and a diffusion plate (25) that diffuses and emits the light emitted from the second surface. The luminance uniformizing plate (24) includes a high light-transmittance region between a region opposed to each of the light sources (21) and a region opposed to a vertex portion of a corresponding one of the plurality of partitions (231), the high light-transmittance region being higher in light-transmittance per unit area than the region opposed to the light source (21) and the region opposed to the vertex portion.

    VIDEO DISPLAY DEVICE
    8.
    发明公开
    VIDEO DISPLAY DEVICE 审中-公开

    公开(公告)号：EP3346324A1

    公开(公告)日：2018-07-11

    申请号：EP16841118.9

    申请日：2016-08-30

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： KUMAMOTO, Yasuhiro ,  SHINYA, Takeichi ,  HIGA, Koujirou ,  OFUJI, Masaaki ,  TAKEUCHI, Taizou ,  KUGIMARU, Tadahiro

    IPC: G02F1/13357 ,  F21S2/00 ,  F21V7/00 ,  G02F1/1333 ,  G09F9/00

    Abstract: Provided is a video display device capable of reducing luminance lowering or luminance non-uniformity caused at an end of an effective area of a display panel. A video display device includes: a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed; and an optical member that has a plate shape, is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate. The reflection sheet extends to an outside of an outer peripheral edge of the optical member as viewed from the front side.

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