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    ULTRASONIC IMAGING WITH ACOUSTIC RESONANT CAVITY
    42.
    发明申请
    ULTRASONIC IMAGING WITH ACOUSTIC RESONANT CAVITY 有权
    超声波成像与声学谐振腔

    公开(公告)号：US20150198699A1

    公开(公告)日：2015-07-16

    申请号：US14589783

    申请日：2015-01-05

    Applicant: QUALCOMM Incorporated

    Inventor： Nai-Kuei Kuo ,  Kostadin Dimitrov Djordjev ,  Ranjith Ranganathan ,  Nao Sugawara Chuei

    IPC: G01S7/52 ,  G01S15/02

    CPC classification number: G01S7/52017 ,  G01S15/02 ,  G06K9/0002

    Abstract: Techniques describe structures and methods for generating larger output signals and improving image quality of ultrasonic sensors by inclusion of an acoustic cavity in the sensor stack. In some embodiments, an ultrasonic sensor unit may be tuned during manufacturing or during a provisioning phase to work with different thicknesses and materials. In some embodiments, a standing wave signal may be generated using an acoustic cavity in the ultrasonic sensor unit for capturing an ultrasonic image of an object placed on a sensor surface. In some implementations, the ultrasonic sensor may include an ultrasonic transmitter, a piezoelectric receiver, a thin film transistor (TFT) layer and a TFT substrate positioned between the transmitter and the receiver, one or more adhesive layers, and optional cover materials and coatings. The thickness, density and speed of sound of the sensor materials and associated adhesive attachment layers may be used to attain the desired acoustic cavity and improved performance.

    Abstract translation: 技术描述了通过在传感器堆叠中包含声腔来产生更大输出信号和提高超声波传感器的图像质量的结构和方法。 在一些实施例中，超声波传感器单元可以在制造期间或在供应阶段期间被调整以使用不同的厚度和材料。 在一些实施例中，可以使用超声波传感器单元中的声腔来产生驻波信号，用于捕获放置在传感器表面上的物体的超声波图像。 在一些实施方案中，超声波传感器可以包括位于发射器和接收器之间的超声波发射器，压电接收器，薄膜晶体管（TFT）层和TFT衬底，一个或多个粘合剂层以及任选的覆盖材料和涂层。 可以使用传感器材料和相关联的粘合剂附着层的厚度，密度和声速来获得所需的声腔并提高性能。

    DISPLAY WITH PERIPHERALLY CONFIGURED ULTRASONIC BIOMETRIC SENSOR
    43.
    发明申请
    DISPLAY WITH PERIPHERALLY CONFIGURED ULTRASONIC BIOMETRIC SENSOR 有权
    显示与外围配置的超声波生物传感器

    公开(公告)号：US20140354596A1

    公开(公告)日：2014-12-04

    申请号：US14071362

    申请日：2013-11-04

    Applicant: QUALCOMM Incorporated

    Inventor： Kostadin Dimitrov Djordjev ,  Leonard Eugene Fennell ,  Nicholas Ian Buchan ,  David William Burns ,  Samir K. Gupta ,  Sanghoon Bae

    IPC: G06F3/042

    CPC classification number: G06F3/0421 ,  G06K9/0002

    Abstract: Various techniques and apparatuses are disclosed that provide for pixelated display modules that integrate an ultrasonic fingerprint or biometric sensing capability. In some implementations, the ultrasonic fingerprint sensor and the display components of the display module may share a common backplane. In some implementations, the ultrasonic fingerprint sensor may share a flex cable with other components in the display module. In some implementations, the ultrasonic fingerprint sensor may leverage conductive traces on a cover glass used to provide for touch input to the display module.

    Abstract translation: 公开了提供集成超声波指纹或生物特征感测能力的像素化显示模块的各种技术和装置。 在一些实施方案中，超声波指纹传感器和显示模块的显示部件可以共享共同的背板。 在一些实施方案中，超声波指纹传感器可以与显示模块中的其他部件共享柔性电缆。 在一些实施方案中，超声波指纹传感器可以利用用于提供对显示模块的触摸输入的盖玻片上的导电迹线。

    Ultrasonic protective film detection and ultrasonic sensor calibration
    47.
    发明授权
    Ultrasonic protective film detection and ultrasonic sensor calibration 有权

    公开(公告)号：US11335114B2

    公开(公告)日：2022-05-17

    申请号：US16947883

    申请日：2020-08-21

    Applicant: QUALCOMM Incorporated

    Inventor： Changting Xu ,  Soon Joon Yoon ,  Camilo Perez Saaibi ,  Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev

    IPC: G06V40/13 ,  H01L41/113 ,  G06F3/0487 ,  G02B1/14

    Abstract: Some disclosed methods involve acquiring, via an ultrasonic sensor system, first (reference) ultrasonic signals at a first time and acquiring second ultrasonic signals via the ultrasonic sensor system at a second time. Such methods may involve determining, based at least in part on a comparison of the first ultrasonic signals and the second ultrasonic signals, whether one or more layers reside on the cover glass at the second time. If it is determined that the one or more layers reside on the cover glass at the second time, some methods may involve determining one or more signal characteristics corresponding to properties of the one or more layers and determining, based at least in part on the one or more properties, whether the one or more layers are compatible with the ultrasonic sensor system. If so, the method may involve calibrating the ultrasonic sensor system.

    Anti-spoofing devices and methods involving acoustic shear waves
    50.
    发明授权
    Anti-spoofing devices and methods involving acoustic shear waves 有权

    公开(公告)号：US10956709B1

    公开(公告)日：2021-03-23

    申请号：US16682896

    申请日：2019-11-13

    Applicant: QUALCOMM Incorporated

    Inventor： Javier Frydman ,  Lior Maor ,  Gal Rotem ,  Changting Xu ,  Jessica Liu Strohmann ,  Soon Joon Yoon ,  Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev

    IPC: G06K9/00

    Abstract: A method of controlling an apparatus that includes an ultrasonic sensor system may involve controlling the ultrasonic sensor system to transmit a first ultrasonic compressional wave and receiving first signals from the ultrasonic sensor system. The first signals may include signals corresponding to reflections of the first ultrasonic compressional wave from a target object proximate a surface of the apparatus. The method may involve performing an authentication process based, at least in part, on the first signals. The method may involve controlling the apparatus to transmit a shear wave and receiving second signals from the ultrasonic sensor system. The second signals may include signals corresponding to reflections of the shear wave from the target object. The method may involve performing a spoof detection process based, at least in part, on the second signals.

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