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    Fingerprint recognition module, display panel and driving method, and display device
    3.
    发明授权
    Fingerprint recognition module, display panel and driving method, and display device 有权

    公开(公告)号：US11749010B2

    公开(公告)日：2023-09-05

    申请号：US17242928

    申请日：2021-04-28

    Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

    Inventor： Qijun Yao ,  Bo Zhang ,  Feng Lu

    IPC: G06V40/13 ,  B06B1/02 ,  B06B1/06 ,  G06F3/043

    CPC classification number: G06V40/1306 ,  B06B1/0207 ,  B06B1/0696 ,  G06F3/043 ,  B06B2201/56 ,  B06B2201/70

    Abstract: A fingerprint recognition module, a display panel and driving method, and a display device are provided. The fingerprint recognition module includes a first electrode layer including a plurality of first electrodes, and a piezoelectric layer disposed on a side of the first electrode layer. The fingerprint recognition module also includes a second electrode layer disposed on a side of the piezoelectric layer facing away from the first electrode layer. The second electrode layer includes a plurality of second electrodes that are arranged along a first direction, and one second electrode overlaps at least two first electrodes. Moreover, the fingerprint recognition module includes a flexible circuit board bonded and connected to the plurality of second electrodes. In a plane parallel to the first electrode layer, the plurality of second electrodes and the flexible circuit board are arranged along a second direction, and the first direction intersects the second direction.

    Ultrasonic transducer array and manufacturing method thereof
    4.
    发明授权
    Ultrasonic transducer array and manufacturing method thereof 失效
    超声波换能器阵列及其制造方法

    公开(公告)号：US5637800A

    公开(公告)日：1997-06-10

    申请号：US374251

    申请日：1995-01-18

    Applicant: P. Michael Finsterwald ,  Stephen J. Douglas ,  Ricky G. Just

    Inventor： P. Michael Finsterwald ,  Stephen J. Douglas ,  Ricky G. Just

    IPC: G01N29/24 ,  A61B8/00 ,  B06B1/02 ,  B06B1/06 ,  G10K11/32 ,  H04R17/00 ,  H04R31/00 ,  H01L41/00

    CPC classification number: G10K11/32 ,  B06B1/0622 ,  B06B1/0633 ,  B06B1/0692 ,  B06B2201/20 ,  B06B2201/50 ,  B06B2201/56 ,  Y10T29/42

    Abstract: An ultrasonic transducer array, and a method for manufacturing it, having a plurality of transducer elements aligned along an array axis in an imaging plane. Each transducer element includes a piezoelectric layer and one or more acoustic matching layers. The piezoelectric layer has a concave front surface overlayed by a front electrode and a rear surface overlayed by a rear electrode. The shape of each transducer element is selected such that it is mechanically focused into the imaging plane. A backing support holds the plurality of transducer elements in a predetermined relationship along the array axis such that each element is mechanically focused in the imaging plane.

    Abstract translation: 一种超声换能器阵列及其制造方法，具有沿成像平面中的阵列轴排列的多个换能器元件。 每个换能器元件包括压电层和一个或多个声匹配层。 压电层具有由前电极覆盖的凹前表面和由后电极覆盖的后表面。 选择每个换能器元件的形状使得其被机械地聚焦到成像平面中。 背衬支撑件沿着阵列轴将多个换能器元件保持在预定关系中，使得每个元件在成像平面中被机械地聚焦。

    Piezoelectric phase locked loop circuit
    5.
    发明授权
    Piezoelectric phase locked loop circuit 失效
    压电锁相环电路

    公开(公告)号：US4841256A

    公开(公告)日：1989-06-20

    申请号：US110260

    申请日：1987-10-20

    Applicant: Raymond F. Gastgeb

    Inventor： Raymond F. Gastgeb

    IPC: G01D5/243 ,  B06B1/02 ,  G01H13/00 ,  G08B13/16 ,  H03L7/06

    CPC classification number: G01H13/00 ,  B06B1/0238 ,  G08B13/1609 ,  B06B2201/56 ,  B06B2201/70 ,  Y10S331/02 ,  Y10S73/04

    Abstract: A structural member having a piezoelectric transmitter film and a piezoelectric receiver film adhered thereto. The transmitter film produces a vibration upon activation by a voltage controlled oscillator which forms part of a phase-lock loop circuit. The vibrations of the structural member generate electric signals on the receiver film, which feed into a phase comparator. The other input of the phase comparator is the output signal of the voltage controlled oscillator. The phase comparator will output a dc signal proportional to the difference in phase between the two signals. When the structural member becomes damped, the phase comparator will go into saturation, thereby producing a voltage which can activate an alarm signal or other device.

    Abstract translation: 具有粘合到其上的压电发射器膜和压电接收膜的结构件。 发射机薄膜在通过形成锁相环电路的一部分的压控振荡器激活时产生振动。 结构构件的振动在接收器膜上产生电信号，其馈送到相位比较器中。 相位比较器的另一个输入是压控振荡器的输出信号。 相位比较器将输出与两个信号之间的相位差成比例的直流信号。 当结构件变阻尼时，相位比较器将进入饱和状态，从而产生可激活报警信号或其他装置的电压。

    ACOUSTIC AQUATIC TRACKING TRANSMITTER
    7.
    发明公开
    ACOUSTIC AQUATIC TRACKING TRANSMITTER 审中-公开

    公开(公告)号：US20230405635A1

    公开(公告)日：2023-12-21

    申请号：US18332544

    申请日：2023-06-09

    Applicant: BATTELLE MEMORIAL INSTITUTE

    Inventor： Zhiqun Deng ,  Huidong Li ,  Jun Lu ,  Bingbin Wu ,  Jayson J. Martinez ,  Jie Xiao

    IPC: B06B1/06 ,  G01S15/10 ,  G01S7/521

    CPC classification number: B06B1/0611 ,  B06B1/0688 ,  B06B2201/56 ,  G01S7/521 ,  G01S15/102

    Abstract: Aquatic tracking makes use of acoustics, rather than other signals that do not travel as well in water. Tracking devices are used to monitor species of fish and other aquatic animals to monitor how their populations and movements are in nature, and how or whether those populations and movements are affected by, for example, hydroelectric dams and other manmade structures and phenomena. Often, the trackers inserted in aquatic animals adversely affect the animals and can lead to mortality or changed behaviors. New solutions that decrease the size and weight of such tracking devices are disclosed herein, enabling better tracking of aquatic animals that is less likely to cause adverse effects to those populations.

    Piezoelectric diaphragm and piezoelectric speaker
    8.
    发明授权
    Piezoelectric diaphragm and piezoelectric speaker 有权
    压电隔膜和压电扬声器

    公开(公告)号：US06427017B1

    公开(公告)日：2002-07-30

    申请号：US09439347

    申请日：1999-11-15

    Applicant: Nozomi Toki

    Inventor： Nozomi Toki

    IPC: H04R2500

    CPC classification number: G02F1/133308 ,  B06B1/0688 ,  B06B1/0692 ,  B06B2201/56 ,  B06B2201/70 ,  G02F2001/133394 ,  H04M1/03 ,  H04N5/642 ,  H04R1/025 ,  H04R17/00 ,  H04R2499/11 ,  H04R2499/15

    Abstract: Disclosed is a piezoelectric diaphragm with a transparent piezoelectric member and a transparent electrode. Also disclosed is a portable electronic device that has a display means to display an image and a piezoelectric speaker having a transparent piezoelectric member and a transparent electrode. In this portable electronic device, the piezoelectric speaker is disposed in front of the display means.

    Abstract translation: 公开了具有透明压电元件和透明电极的压电振动膜。 还公开了具有显示图像的显示装置和具有透明压电元件和透明电极的压电扬声器的便携式电子设备。 在这种便携式电子设备中，压电扬声器设置在显示装置的前面。

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