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    AREA LIGHT SOURCE AND DISPLAY DEVICE
    57.
    发明申请
    AREA LIGHT SOURCE AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200166680A1

    公开(公告)日：2020-05-28

    申请号：US16329456

    申请日：2018-06-11

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Xiandong MENG ,  Wei WANG ,  Xue DONG ,  Jing LV ,  Xiaochuan CHEN ,  Jifeng TAN ,  Jian GAO ,  Xianqin MENG

    IPC: G02B5/18 ,  G02F1/13357

    Abstract: A surface light source, comprising a waveguide layer and a grating structure; the waveguide layer has a first surface and a second surface opposite to each other; the grating structure is provided on the first or second surface of the waveguide layer; and the grating structure is used for guiding light incident to the grating structure to the waveguide layer and performing total reflection propagation in the waveguide layer. Such surface light source structure enables energy and direction of light emitted from a light field modulation layer to be distributed uniformly, and thus the thickness of the surface light source and the number of LEDs in the surface light source are reduced. Also disclosed is a display device.

    Backlight Unit, Method for Manufacturing the Same and Display Device
    58.
    发明申请
    Backlight Unit, Method for Manufacturing the Same and Display Device 审中-公开

    公开(公告)号：US20200018885A1

    公开(公告)日：2020-01-16

    申请号：US16338307

    申请日：2018-07-23

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Wei WANG ,  Xiandong MENG ,  Jifeng TAN ,  Jian GAO ,  Xiaochuan CHEN ,  Jing LV ,  Xue DONG

    IPC: F21V8/00

    Abstract: A backlight unit, a method for manufacturing the same and a display device are provided. The backlight unit includes a light guide plate, an LED layer and an optical microstructure layer. The light guide plate includes a light incident surface and a light exit surface opposite to the light incident surface. The LED layer is provided on the light incident surface of the light guide plate, and includes plural LED chips arranged in an array. The optical microstructure layer is provided on one of the light incident surface and the light exit surface of the light guide plate, and includes plural optical microstructures in one-to-one correspondence with the plural LED chips. Each of the plural optical microstructures is configured to cause at least a portion of light emitted from a corresponding LED chip to propagate in the light guide plate by total internal reflection.

    PIXEL CIRCUIT, DRIVING METHOD, DISPLAY PANEL AND DISPLAY DEVICE
    59.
    发明申请
    PIXEL CIRCUIT, DRIVING METHOD, DISPLAY PANEL AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190355305A1

    公开(公告)日：2019-11-21

    申请号：US16096138

    申请日：2018-04-24

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Shengji YANG ,  Xue DONG ,  Jing LV ,  Xiaochuan CHEN ,  Minghua XUAN ,  Lei WANG ,  Dongni LIU ,  Li XIAO ,  Jie FU ,  Pengcheng LU

    IPC: G09G3/3258

    Abstract: A pixel circuit, a driving method, a display panel and a display device. The pixel circuit includes: at least two pixel sub-circuits, a data line, a first scan line, a second scan line, a third scan line and a light-emitting control line. The pixel sub-circuit includes: a light-emitting control sub-circuit, a node reset sub-circuit, a drive control sub-circuit, a write sub-circuit and a light emitting device. The light-emitting control sub-circuit is configured to provide a signal provided by the first voltage signal end to a first node; the node reset sub-circuit is configured to form a conductive path between the first node and a second node; the write sub-circuit is configured to write a data signal provided by the data signal end and a threshold voltage to the second node; and the drive control sub-circuit is configured to drive the light emitting device to emit light.

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