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    PIXEL CIRCUIT, ELECTROLUMINESCENT DISPLAY PANEL, DRIVING METHODS THEREOF, AND DISPLAY DEVICE
    101.
    发明申请
    PIXEL CIRCUIT, ELECTROLUMINESCENT DISPLAY PANEL, DRIVING METHODS THEREOF, AND DISPLAY DEVICE 有权

    公开(公告)号：US20210335235A1

    公开(公告)日：2021-10-28

    申请号：US16487376

    申请日：2019-01-14

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Shengji YANG ,  Xue DONG ,  Xiaochuan CHEN ,  Hui WANG ,  Pengcheng LU

    IPC: G09G3/3233

    Abstract: The disclosure discloses a pixel circuit, an electroluminescent display panel, driving methods thereof, and a display device. An initialization circuit, a photosensitive drive circuit, a photosensitive output circuit, and a photosensitive device are provided in the pixel circuit. Under the control of a second control signal terminal, an initialization signal provided by an initialization signal terminal is transmitted to a third node by the initialization circuit; under the control of a potential of the third node, the photosensitive drive circuit outputs a corresponding electrical signal; and under the control of a first gate signal terminal, the photosensitive output circuit transmits the electrical signal output by the photosensitive drive circuit to a reading signal terminal.

    DISPLAY PANEL, DISPLAY DEVICE AND METHOD FOR DISPLAYING BRAILLE INFORMATION
    103.
    发明申请
    DISPLAY PANEL, DISPLAY DEVICE AND METHOD FOR DISPLAYING BRAILLE INFORMATION 有权

    公开(公告)号：US20210183264A1

    公开(公告)日：2021-06-17

    申请号：US16080618

    申请日：2018-02-02

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Changfeng LI ,  Haisheng WANG ,  Yingming LIU ,  Xiaoliang DING ,  Rui XU ,  Pengpeng WANG ,  Wei LIU ,  Yuzhen GUO ,  Pengcheng LU ,  Yanan JIA ,  Pinchao GU

    IPC: G09B21/00 ,  G09G3/00

    Abstract: The embodiments of the present disclosure provide a display panel, a display device, and a method for displaying Braille information. The display panel includes a plurality of scan lines, data lines, and display circuits arranged at intersections of the plurality of scan lines and the plurality of data lines. The display circuit includes a switch configured to be turned on or off according to a scan signal from the scan line, and a dot element coupled to the switch. The dot element includes a substrate, an electrode provided on the substrate, a thermosensitive layer provided on the electrode, and a dot key arranged on the thermosensitive layer. The electrode is coupled to the switch, and configured to be applied with a data signal from the data line when the switch is turned on. The thermosensitive layer is configured to be heated by the electrode to protrude the dot.

    PIXEL DRIVING CIRCUIT, PIXEL DRIVING METHOD AND DISPLAY DEVICE
    104.
    发明申请
    PIXEL DRIVING CIRCUIT, PIXEL DRIVING METHOD AND DISPLAY DEVICE 有权

    公开(公告)号：US20210174736A1

    公开(公告)日：2021-06-10

    申请号：US17059922

    申请日：2020-04-16

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Shengji YANG ,  Xiaochuan CHEN ,  Hui WANG ,  Pengcheng LU ,  Kuanta HUANG

    IPC: G09G3/32

    Abstract: A pixel driving circuit, a pixel driving method and a display device are provided. the pixel driving circuit includes a driving circuit and a light-emitting duration control circuit, a first end of the driving circuit is connected to a first voltage end, a second end of the driving circuit is connected to the light-emitting element, and the driving circuit is configured to control the first end and the second end to connect to each other; the light-emitting duration control circuit is configured to switch on or switch off a connection between the second end of the driving circuit and the light-emitting element, according to a control data voltage input by a control data line and a control initial voltage input by a control initial voltage end.

    PIXEL CIRCUIT, DRIVING METHOD THEREOF, DISPLAY PANEL, AND DISPLAY DEVICE
    106.
    发明申请
    PIXEL CIRCUIT, DRIVING METHOD THEREOF, DISPLAY PANEL, AND DISPLAY DEVICE 有权

    公开(公告)号：US20210166627A1

    公开(公告)日：2021-06-03

    申请号：US15775431

    申请日：2017-11-08

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Li XIAO ,  Xiaochuan CHEN ,  Minghua XUAN ,  Shengji YANG ,  Jie FU ,  Lei WANG ,  Dongni LIU ,  Pengcheng LU ,  Han YUE

    IPC: G09G3/3258 ,  G09G3/3291 ,  G09G3/3266

    Abstract: A pixel circuit includes a light emitting element; a first switch transistor connected in series with the light emitting element between a first supply voltage terminal and a second supply voltage terminal, the first switch transistor including a gate electrode connected to a first node; and a storage circuit coupled to the first node and a reference voltage terminal for receiving a reference voltage, the storage circuit being configured to store the reference voltage in the storage circuit in response to an active signal on a scan line during a write phase, and to supply the stored reference voltage to the first node during a light emission phase in response to an active data signal on a data line to achieve light emission of the light emitting element, the active data signal having a duration indicating a magnitude of image data for the pixel circuit.

    BACKLIGHT MODULE AND MANUFACTURING METHOD THEREOF, DISPLAY DEVICE AND LIGHT GUIDE DEVICE
    108.
    发明申请
    BACKLIGHT MODULE AND MANUFACTURING METHOD THEREOF, DISPLAY DEVICE AND LIGHT GUIDE DEVICE 审中-公开

    公开(公告)号：US20200326465A1

    公开(公告)日：2020-10-15

    申请号：US16097503

    申请日：2018-02-01

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Jian GAO ,  Xiaochuan CHEN ,  Wei WANG ,  Jifeng TAN ,  Xiandong MENG ,  Xianqin MENG ,  Pengcheng LU

    IPC: F21V8/00

    Abstract: A backlight module, a manufacturing method thereof, a display device and a light guide device are provided. The backlight module includes: a light guide structure, including a volume grating layer, the volume grating layer including a plurality of volume grating portions and a light guide portion between adjacent volume grating portions, the plurality of volume grating portions being configured to introduce a beam of a specific wavelength into the light guide portion; and a light extraction structure, located on a light exit side of the light guide structure, wherein a refractive index of the light guide structure is greater than a refractive index of the light extraction structure, and an incident angle of the beam introduced into the light guide portion on a plane where the light guide portion is located is not less than a total reflection critical angle of the light guide structure.

    OLED DISPLAY PANEL, DRIVING METHOD THEREFOR, AND DISPLAY DEVICE
    109.
    发明申请
    OLED DISPLAY PANEL, DRIVING METHOD THEREFOR, AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200293739A1

    公开(公告)日：2020-09-17

    申请号：US16755966

    申请日：2019-06-27

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Shengji YANG ,  Xue DONG ,  Xiaochuan CHEN ,  Hui WANG ,  Pengcheng LU

    IPC: G06K9/00 ,  G09G3/3266 ,  G06K9/20 ,  H01L27/32

    Abstract: Disclosed in the present disclosure are an OLED display panel, a driving method therefor and a display device. A first light-blocking layer is disposed between a photosensitive unit and an organic electroluminescent structure, and the first light-blocking layer at least has a hollow area corresponding to a fingerprint identification area. When a finger touches a screen, the lights emitted by the organic electroluminescent structure are reflected by the finger to irradiate the photosensitive unit through small holes, such that fingerprint information of the finger is detected due to the brightness differences among the lights reflected by ridges and valleys of the finger. The small holes in the hollow area can function to improve the light intensity convergence, thus increasing the sensitivity to finger touches to the greatest extent.

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