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    Sensor circuit for generating and detecting ultrasonic sensing signal, an ultrasonic sensing display apparatus
    32.
    发明授权
    Sensor circuit for generating and detecting ultrasonic sensing signal, an ultrasonic sensing display apparatus 有权

    公开(公告)号：US11361576B2

    公开(公告)日：2022-06-14

    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: G01S7/52 ,  G06V40/13 ,  G01S15/89 ,  G10K9/122

    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.

    Touch circuit, touch panel, display panel and display device
    33.
    发明授权
    Touch circuit, touch panel, display panel and display device 有权

    公开(公告)号：US11281325B2

    公开(公告)日：2022-03-22

    申请号：US16303961

    申请日：2018-04-03

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Xueyou Cao ,  Haisheng Wang ,  Xiaoliang Ding ,  Chihjen Cheng ,  Yuzhen Guo ,  Yanling Han ,  Wei Liu ,  Pengpeng Wang ,  Ping Zhang

    IPC: G09G3/32 ,  G06F3/041

    Abstract: Provided is a touch circuit including first and second voltage input terminals, a pressure sensing circuit and an output circuit, the first voltage input terminal is configured to input a first voltage signal, the second voltage input terminal is configured to input a second voltage signal, the first voltage signal is different from the second voltage signal, an input terminal of the pressure sensing circuit is coupled to the first voltage input terminal, an output terminal of the pressure sensing circuit is coupled to an input terminal of the output circuit, a control terminal of the output circuit is configured to receive a control signal, and the output circuit is configured to control on/off state between the input terminal of the output circuit and the output terminal of the output circuit according to the control signal. A touch panel, a display panel and a display device are also provided.

    Electrical signal detection module, driving method, pixel circuit and display device
    34.
    发明授权
    Electrical signal detection module, driving method, pixel circuit and display device 有权

    公开(公告)号：US11222590B2

    公开(公告)日：2022-01-11

    申请号：US16346358

    申请日：2018-10-17

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Wei Liu ,  Xue Dong ,  Haisheng Wang ,  Xiaoliang Ding ,  Yingming Liu ,  ChihJen Cheng ,  Xueyou Cao ,  Yanling Han ,  Changfeng Li ,  Pengpeng Wang ,  Ping Zhang ,  Rui Xu

    IPC: G09G3/3258 ,  H01L27/32 ,  G09G3/3233

    Abstract: An electrical signal detection module includes a photoelectrical signal application circuitry, an operational amplifier, a gain control circuitry and a master control circuitry. The gain control circuitry includes at least two gain control sub-circuitries connected in parallel to each other, and a discharge switching sub-circuitry connected in parallel to the gain control sub-circuitries. Each gain control sub-circuitry includes a gain switching sub-circuitry and a gain capacitive sub-circuitry connected in series to each other. The master control circuitry is configured to apply a discharge switching signal to the discharge switching sub-circuitry, and apply a gain switching control signal to the corresponding gain switching sub-circuitry. The gain switching sub-circuitry is configured to control a first end and a second end of the gain switching sub-circuitry to be electrically connected to each other in accordance with the gain switching control signal. The discharge switching sub-circuitry is configured to enable a first end of the gain capacitive sub-circuitry connected to the gain switching sub-circuitry to be electrically connected to, or electrically disconnected from, a second end of the gain capacitive sub-circuitry in accordance with the discharge switching signal.

    Sounding device, manufacturing method thereof and display device
    36.
    发明授权
    Sounding device, manufacturing method thereof and display device 有权

    公开(公告)号：US11134334B2

    公开(公告)日：2021-09-28

    申请号：US16529132

    申请日：2019-08-01

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Yanling Han ,  Xue Dong ,  Haisheng Wang ,  Yingming Liu ,  Lijun Zhao ,  Chenyang Zhang ,  Peixiao Li ,  Yuzhen Guo ,  Xiufeng Li

    IPC: H04R17/00 ,  H04R1/28 ,  H01L41/09 ,  H01L41/08

    Abstract: A sounding device, a manufacturing method thereof and a display device are provided. The sounding device includes at least two sounding units. Each of the sounding units includes: a transparent structural layer, including a recess and a supporting member located around the recess; and a piezoelectric vibrating film covering the recess, a cavity is formed by the piezoelectric vibrating film and the supporting member. The piezoelectric vibrating film includes a base film covering the recess; and at least one piezoelectric structure located on a side of the cavity away from the transparent structural layer. Each of the at least one piezoelectric structure includes: a first electrode; a piezoelectric material layer located on a side of the first electrode away from the cavity; and a second electrode located on a side of the piezoelectric material layer away from the first electrode.

    Current amplification circuitry and driving method thereof, and fingerprint detection device
    37.
    发明授权
    Current amplification circuitry and driving method thereof, and fingerprint detection device 有权

    公开(公告)号：US10979005B2

    公开(公告)日：2021-04-13

    申请号：US16332246

    申请日：2018-05-31

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Xiaoliang Ding ,  Haisheng Wang ,  Yingming Liu ,  Xueyou Cao ,  Ping Zhang ,  Yanling Han

    IPC: H03F3/08 ,  G06K9/00

    Abstract: Embodiments of the present disclosure provide a current amplification circuitry and a driving method thereof, and a fingerprint detection device. The current amplification circuitry includes a voltage control circuit, a plurality of first current amplification circuits, and a second current amplification circuit. The voltage control circuit provides a voltage control signal to the plurality of first current amplification circuits. The first current amplification circuit includes a current mirror, and the current mirror is coupled to a voltage input terminal, the voltage control circuit, and a first input terminal of the second current amplification circuit. The first current amplification circuit amplifies a current from the voltage input terminal according to the voltage control signal provided by the voltage control circuit, and provides the amplified current to the second current amplification circuit. The second current amplification circuit is coupled to the voltage input terminal via a second input terminal and amplifies the amplified current.

    Optical measurement module, optical measurement circuit, and electronic device
    38.
    发明授权
    Optical measurement module, optical measurement circuit, and electronic device 有权

    公开(公告)号：US10935422B2

    公开(公告)日：2021-03-02

    申请号：US16315561

    申请日：2018-04-09

    Applicant: BOE TECHNOLOGY GROUP CO., LTD.

    Inventor： Haisheng Wang ,  Xiaoliang Ding ,  Chihjen Cheng ,  Yanling Han ,  Wei Liu ,  Ping Zhang ,  Pengpeng Wang ,  Xueyou Cao ,  Yanan Jia

    IPC: G01J1/42 ,  G01J1/44

    Abstract: The present disclosure provides an optical measurement module which includes a detection sub-circuit, a comparison sub-circuit and a blocking layer, the blocking layer includes at least one blocking element, the detection sub-circuit comprises a first photosensitive element, and the detection sub-circuit is configured to output a detection signal according to light irradiation received by the first photosensitive element and an input signal of the detection sub-circuit; the comparison sub-circuit includes a second photosensitive element, the at least one blocking element in the blocking layer covers at least the second photosensitive element, the comparison sub-circuit is configured to output a comparison signal according to an input signal of the comparison sub-circuit; wherein the first photosensitive element and the second photosensitive element have a same structure, so that they have a same response to light irradiation and a same response to environment.

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