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    ULTRASONIC FINGERPRINT SENSOR, DISPLAY SUBSTRATE AND DRIVING METHOD THEREOF, AND DISPLAY DEVICE
    72.
    发明申请
    ULTRASONIC FINGERPRINT SENSOR, DISPLAY SUBSTRATE AND DRIVING METHOD THEREOF, AND DISPLAY DEVICE 有权

    公开(公告)号：US20210334491A1

    公开(公告)日：2021-10-28

    申请号：US16316493

    申请日：2018-02-12

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Pinchao GU ,  Xue DONG ,  Haisheng WANG ,  Chunwei WU ,  Yingming LIU ,  Rui XU ,  Changfeng LI ,  Yanan JIA ,  Yuzhen GUO ,  Yunke QIN ,  Lijun ZHAO

    IPC: G06K9/00

    Abstract: The present disclosure provides an ultrasonic fingerprint sensor, a display substrate, a driving method thereof and a display device. The ultrasonic fingerprint sensor includes: a base substrate; a driving structure provided on the base substrate and configured to transmit an ultrasonic signal; a receiving structure provided on the base substrate and configured to receive the ultrasonic signal reflected by a finger, and convert the ultrasonic signal into an electrical signal for determining fingerprint information, the driving structure and the receiving structure are provided in a same plane. Since the driving structure and the receiving structure of the ultrasonic fingerprint sensor of the present disclosure are in a same plane, the driving structure can be closer to the touch body (for example, a finger), which is advantageous for the ultrasonic waves generated by the driving structure to reach the finger to improve the touch accuracy.

    ACTIVE PIXEL SENSOR AND DRIVING METHOD THEREOF, IMAGER AND ELECTRONIC DEVICE
    73.
    发明申请
    ACTIVE PIXEL SENSOR AND DRIVING METHOD THEREOF, IMAGER AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190281242A1

    公开(公告)日：2019-09-12

    申请号：US16071623

    申请日：2018-01-30

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Chih Jen CHENG ,  Pengpeng WANG ,  Wei LIU ,  Xiaoliang DING ,  Rui XU ,  Changfeng LI

    IPC: H04N5/374 ,  H04N5/378

    Abstract: An active pixel sensor, a driving method thereof, an imager and an electronic device are disclosed. The active pixel sensor includes: a photosensitive element, configured to convert a received light signal into an electrical signal; a follower circuit, connected with the photosensitive element and configured to convert the electrical signal into an output voltage, the follower circuit including a source follower transistor; and an adjustment circuit, connected with the follower circuit and configured to collect the output voltage of the follower circuit and to adjust a bias current of the source follower transistor according to the output voltage, so as to adjust the output voltage to a preset range.

    COLLIMATING STRUCTURE, METHOD FOR FABRICATING THE SAME AND DISPLAY DEVICE
    74.
    发明申请
    COLLIMATING STRUCTURE, METHOD FOR FABRICATING THE SAME AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190243154A1

    公开(公告)日：2019-08-08

    申请号：US16182937

    申请日：2018-11-07

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Xiaoquan HAI ,  Xue DONG ,  Haisheng WANG ,  Yingming LIU ,  Lei WANG ,  Rui XU

    IPC: G02B27/30 ,  G06K9/00

    CPC classification number: G02B27/30 ,  G06K9/0004 ,  G06K9/00046

    Abstract: A collimating structure, a method for fabricating the same and a display device are provided. The collimating structure includes a plurality of light-shielding layers with light-transmitting parts, and the distances between the respective light-shielding layers are adjusted using light-transmitting layers to thereby achieve a desirable depth-to-width ratio of a column of holes so as to define a light convergence angle of the collimating structure. At least one intermediate light-shielding layer is arranged between the top light-shielding layer and the bottom light-shielding layer, and the distances between the respective light-shielding layers are adjusted using the light-transmitting layers, so that crosstalk between light of the light-transmitting parts can be shielded to thereby improve the accuracy of recognized information about texture.

    TOUCH PANEL AND DISPLAY APPARATUS
    76.
    发明申请
    TOUCH PANEL AND DISPLAY APPARATUS 审中-公开

    公开(公告)号：US20190156097A1

    公开(公告)日：2019-05-23

    申请号：US15743583

    申请日：2017-07-07

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yingming LIU ,  Xue DONG ,  Jing LV ,  Haisheng WANG ,  Chunwei WU ,  Xiaoliang DING ,  Rui XU ,  Lijun ZHAO ,  Changfeng LI ,  Yanan JIA ,  Yuzhen GUO ,  Yunke QIN ,  Pinchao GU ,  Fanna MENG

    IPC: G06K9/00 ,  G06F3/041 ,  G06F3/042

    Abstract: The present application provides a touch panel and a display apparatus comprising the touch panel. The touch panel comprises an array substrate and a fingerprint identification substrate, the array substrate comprises a first base and a plurality of pixel units provided on the first base, each of the pixel units comprises a thin film transistor and an organic light emitting diode, the fingerprint identification substrate comprises a second base and a plurality of fingerprint identification devices provided on the second base, the fingerprint identification substrate is located at a side of the first base distal to the pixel units, the array substrate further comprises a light blocking layer and a via-hole provided between at least a portion of the pixel units adjacent to each other, the via-hole is formed in the light blocking layer so that light emitted by the organic light emitting diode is reflected by a surface of a touch terminal to irradiate onto more than one of the fingerprint identification devices, the surface of the touch terminal comprises ridges and valleys, light reflected by the ridges and the valleys of the surface of the touch terminal passes through the via-hole to irradiate onto different ones of the fingerprint identification devices respectively.

    PHOTOSENSITIVE MODULE, PHOTOSENSITIVE DEVICE AND DISPLAY PANEL
    77.
    发明申请
    PHOTOSENSITIVE MODULE, PHOTOSENSITIVE DEVICE AND DISPLAY PANEL 审中-公开

    公开(公告)号：US20190065812A1

    公开(公告)日：2019-02-28

    申请号：US15953431

    申请日：2018-04-14

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Rui XU ,  Haisheng WANG ,  Yingming LIU ,  Pinchao GU ,  Changfeng LI ,  Xueyou CAO ,  Wei LIU

    IPC: G06K9/00 ,  F21V8/00 ,  H01L27/146

    Abstract: A photosensitive module includes a plurality of photosensitive cells. Each of the photosensitive cells includes a selective light director having a first surface including a light entry region and a light exit region different from the light entry region, the selective light director being configured to selectively direct a collimated portion of light incident towards the light entry region to the light exit region to exit from the selective light director; and a photoelectric converter arranged in the light exit region and having a light receiving surface facing the light exit region to receive the collimation portion of the light exiting from the selective light director.

    TOUCH DISPLAY DEVICE AND DRIVING METHOD THEREOF
    78.
    发明申请
    TOUCH DISPLAY DEVICE AND DRIVING METHOD THEREOF 审中-公开

    公开(公告)号：US20190064955A1

    公开(公告)日：2019-02-28

    申请号：US15516072

    申请日：2016-09-05

    Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.

    Inventor： Haisheng WANG ,  Xue DONG ,  Hailin XUE ,  Xiaochuan CHEN ,  Shengji WANG ,  Xiaoliang DING ,  Yingming LIU ,  Weijie ZHAO ,  Changfeng LI ,  Wei LIU ,  Pengpeng WANG ,  Rui XU

    IPC: G06F3/044 ,  G06F3/041

    Abstract: A touch display device and a driving method are disclosed. The touch display device includes a liquid crystal display panel having a plurality of self-capacitive electrodes and an electroluminescent display panel arranged under the liquid crystal display panel. The self-capacitive electrodes in the liquid crystal display panel and a cathode in the electroluminescent display panel constitute capacitive structures. The driving method includes in a touch detection time period, applying a first touch detection signal to the self-capacitive electrodes and the cathode simultaneously, and detecting change of a capacitance value of a self capacitance corresponding to each self-capacitive electrode so as to determine a touch position; and in a pressure detection time period, applying a second touch detection signal to the self-capacitive electrodes or the cathode, and detecting changes of capacitance values of capacitances formed between the self-capacitive electrodes and the cathode to determine a pressure at the touch position.

    DISPLAY PANEL, DRIVING METHOD THEREFOR, AND DISPLAY DEVICE
    79.
    发明申请
    DISPLAY PANEL, DRIVING METHOD THEREFOR, AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190057236A1

    公开(公告)日：2019-02-21

    申请号：US15767358

    申请日：2017-09-30

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yingming LIU ,  Xue DONG ,  Haisheng WANG ,  Xiaoliang DING ,  Rui XU ,  Lijun ZHAO

    IPC: G06K9/00

    Abstract: There is disclosed a display panel and its driving method and a display device in the technical field of display. The display panel according to the disclosure includes a base substrate, a driving structure provided on the base substrate, a receiving structure provided above the driving structure, and a fingerprint detection module provided on the base substrate, wherein the driving structure is configured to create an ultrasonic signal, the receiving structure is configured to receive the ultrasonic signal reflected from a finger and transform the reflected ultrasonic signal into an electric signal which is input to the fingerprint detection module, and the fingerprint detection module is configured to determine fingerprint information from the electric signal output by the receiving structure.

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