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    Touch panel, touch recognition method and touch device
    15.
    发明授权
    Touch panel, touch recognition method and touch device 有权

    公开(公告)号：US11521417B2

    公开(公告)日：2022-12-06

    申请号：US17355776

    申请日：2021-06-23

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Liang Cui ,  Haisheng Wang ,  Xiaoliang Ding ,  Yingming Liu ,  Pengpeng Wang ,  Ping Zhang ,  Yubo Wang ,  Xiufeng Li ,  Yuanyuan Ma

    IPC: G06V40/13 ,  G06F3/041 ,  G06F3/043

    Abstract: The present disclosure provides a touch panel including: a touch region having a plurality of ultrasonic signal detection circuits and a reference region having a plurality of reference circuits, each ultrasonic signal detection circuit includes an ultrasonic sensor and a first driving circuit; the ultrasonic sensor includes a first electrode, a second electrode, and a dielectric layer between the first electrode and the second electrode, the first driving circuit is configured to drive the ultrasonic sensor; each of the plurality of reference circuits includes a reference transceiver and a second driving circuit, the reference transceiver includes a third electrode, a fourth electrode, and a dielectric layer between the third electrode and the fourth electrode; the second driving circuit is configured to drive the reference transceiver; the dielectric layer of the ultrasonic sensor has piezoelectric sensitivity; the dielectric layer of the reference transceiver does not have the piezoelectric sensitivity.

    A SENSOR CIRCUIT FOR GENERATING AND DETECTING ULTRASONIC SENSING SIGNAL, AN ULTRASONIC SENSING DISPLAY APPARATUS
    16.
    发明申请
    A SENSOR CIRCUIT FOR GENERATING AND DETECTING ULTRASONIC SENSING SIGNAL, AN ULTRASONIC SENSING DISPLAY APPARATUS 有权

    公开(公告)号：US20210406497A1

    公开(公告)日：2021-12-30

    申请号：US16762271

    申请日：2019-05-21

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Xiufeng Li ,  Yingming Liu ,  Xiaoliang Ding ,  Lijun Zhao ,  Haisheng Wang ,  Yanling Han

    IPC: G06K9/00 ,  G10K9/122 ,  G01S7/52 ,  G01S15/89

    Abstract: A circuit for generating and detecting ultrasonic sensing signals is provided. A piezoelectric device having a transmitting electrode and a receiving electrode is coupled to a biasing-and-sampling sub-circuit configured to set different bias voltages to the receiving electrode. The piezoelectric device is configured to transmit an ultrasonic signal upon applying an exciting pulse signal to the transmitting electrode and alternatively to generate a voltage signal at the receiving electrode upon receiving an echo signal based on the ultrasonic signal. A signal-collecting sub-circuit is coupled to the receiving electrode to determine a first sampling voltage based on the voltage signal at the receiving electrode in a first sampling period and a second sampling voltage based on the voltage signal at the receiving electrode in a second sampling period. An output sub-circuit is coupled to the signal-collecting sub-circuit for outputting the first sampling voltage and the second sampling voltage at a same time.

    Fingerprint Identification Module and Driving Method Thereof and Electronic Device
    17.
    发明申请
    Fingerprint Identification Module and Driving Method Thereof and Electronic Device 有权

    公开(公告)号：US20210209334A1

    公开(公告)日：2021-07-08

    申请号：US16771140

    申请日：2020-01-17

    Applicant: BOE Technology Group Co., Ltd.

    Inventor： Yingming Liu ,  Xiaoliang Ding ,  Xiufeng Li ,  Pengpeng Wang

    IPC: G06K9/00 ,  G06F3/043 ,  G06F3/041 ,  G06F3/044

    Abstract: A fingerprint identification module and a driving method thereof and an electronic device are provided. In the fingerprint identification module, a receiving electrode layer includes a plurality of receiving electrodes; a first driving electrode layer is arranged at a side of a piezoelectric material layer away from the receiving electrode layer and includes a plurality of first driving electrodes; a second driving electrode layer is arranged at a side of the receiving electrode layer away from the piezoelectric material layer and includes a plurality of second driving electrodes; the plurality of first driving electrodes and the plurality of second driving electrodes form a plurality of driving electrode pairs, and in each driving electrode pair, an orthographic projection of the first driving electrode on the piezoelectric material layer is at least partially overlapped with an orthographic projection of the second driving electrode on the piezoelectric material layer.

    Ultrasonic sensor, driving method thereof and manufacturing method thereof
    18.
    发明授权
    Ultrasonic sensor, driving method thereof and manufacturing method thereof 有权

    公开(公告)号：US12194495B2

    公开(公告)日：2025-01-14

    申请号：US17184709

    申请日：2021-02-25

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yuzhen Guo ,  Yingming Liu ,  Haisheng Wang ,  Xiufeng Li ,  Lijun Zhao ,  Peixiao Li ,  Yaqian Ji ,  Chenyang Zhang

    IPC: B06B1/02 ,  B06B1/06 ,  G01D5/48

    Abstract: The present disclosure provides an ultrasonic sensor, a method for driving the same, and a method for manufacturing the same. The ultrasonic sensor includes a back plate, a sounding structure on the back plate and a backing layer on a side of the sounding structure distal to the back plate; the sounding structure includes a plurality of emitting electrodes, an opposite electrode, a piezoelectric layer and a plurality of signal leads, and the plurality of emitting electrodes and the opposite electrode are respectively arranged on two sides of the piezoelectric layer; and the plurality of emitting electrodes are arranged in an array, and each of the emitting electrodes is individually coupled to one of the signal leads. The ultrasonic sensor may achieve an independent control for each patterned electrode such that the ultrasonic sensor may be used as a point sound source.

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