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公开(公告)号：WO2020150367A1
公开(公告)日：2020-07-23
申请号：PCT/US2020/013703
申请日：2020-01-15
Applicant: QUALCOMM INCORPORATED
Inventor： LU, Yipeng , PANCHAWAGH, Hrishikesh Vijaykumar , DJORDJEV, Kostadin Dimitrov , TSENG, Chin-Jen , BUCHAN, Nicholas Ian , KAO, Tsongming , SEO, Jae Hyeong
IPC: G06K9/00
Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with a thick electrically nonconductive acoustic layer and thin electrode layer coupled to a piezoelectric layer of an ultrasonic transmitter or transceiver. The thick electrically nonconductive acoustic layer may have a high density or high acoustic impedance value, and may be adjacent to the piezoelectric layer. The thin electrode layer may be divided into electrode segments. The ultrasonic fingerprint sensor system may use flexible or rigid substrates, and may use an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.
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公开(公告)号：WO2021242519A1
公开(公告)日：2021-12-02
申请号：PCT/US2021/031918
申请日：2021-05-12
Applicant: QUALCOMM INCORPORATED
Inventor： STROHMANN, Jessica Liu , PANCHAWAGH, Hrishikesh Vijaykumar , BUCHAN, Nicholas Ian , LU, Yipeng , DJORDJEV, Kostadin Dimitrov
Abstract: A mobile device includes one or more piezoelectric polymer layers underlying a display. The one or more piezoelectric polymer layers may be electrically driven to operate in either a d33 stretching mode or a d31 bending mode. The mobile device functions as an ultrasonic sensor in the d33 stretching mode and as an audio speaker/microphone or a proximity sensor in the d31 bending mode. The piezoelectric polymer layer operating in the d31 bending mode may be directly mechanically coupled to a display, indirectly mechanically coupled to the display and underlying an ultrasonic sensor stack, or integrated in the ultrasonic sensor stack. Signal performance of the piezoelectric polymer layer operating in the d31 bending mode may be enhanced or modulated by having a larger area, multiple layers, bi-pole or uni-pole driving with multiple layers, one or more stiff adhesives, a spacer layer, one or more mass features, a thin TFT layer, a thick piezoelectric polymer layer, or combinations thereof.
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公开(公告)号：WO2021102381A1
公开(公告)日：2021-05-27
申请号：PCT/US2020/061683
申请日：2020-11-20
Applicant: QUALCOMM INCORPORATED
Inventor： KITCHENS, Jack Conway , SCHNEIDER, John Keith , GOJEVIC, Stephen Michael , BRELOFF, Evan Michael , MIRANTO, James Anthony , BROOKS, Emily Kathryn , JOHN ARCHIBALD, Fitzgerald , STOIANOV, Alexei , KUMAR, Raj , SREERAM, Sai Praneeth , LNU, Nirma , D'SOUZA, Sandeep Louis , BUCHAN, Nicholas Ian , LU, Yipeng , TSENG, Chin-Jen , PANCHAWAGH, Hrishikesh Vijaykumar
Abstract: An apparatus may include a cover layer, a layer of first metamaterial proximate (or in) the cover layer, a light source system configured for providing light to the layer of first metamaterial and a receiver system. The first metamaterial may include nanoparticles configured to create ultrasonic waves when illuminated by light. The receiver system may include an ultrasonic receiver system configured to receive ultrasonic waves reflected from a target object in contact with, or proximate, a surface of the cover layer. The control system may be configured to receive ultrasonic receiver signals from the ultrasonic receiver system corresponding to the ultrasonic waves reflected from the target object and to perform an authentication process and/or an imaging process that is based, at least in part, on the ultrasonic receiver signals.
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公开(公告)号：WO2021034551A1
公开(公告)日：2021-02-25
申请号：PCT/US2020/045817
申请日：2020-08-11
Applicant: QUALCOMM INCORPORATED
Inventor： LU, Yipeng , STROHMANN, Jessica Liu , BADGE, Ila , PANCHAWAGH, Hrishikesh Vijaykumar , KAO, Tsongming
Abstract: A device and method for improved sensing with a biometric sensor assembly such as an ultrasound fingerprint sensor using an anti-fingerprint, oleophobic, or hydrophobic coating applied to a surface above the biometric sensor assembly. The coating improves the mechanical coupling of a human finger to the surface, helping to reduce acoustic loss through the finger to surface interface, improving at least the false-rejection ratio.
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公开(公告)号：WO2020263579A1
公开(公告)日：2020-12-30
申请号：PCT/US2020/037200
申请日：2020-06-11
Applicant: QUALCOMM INCORPORATED
Abstract: An ultrasonic sensor array includes a plurality of ultrasonic transducers, each transducer including a piezoelectric member. Each of the transducers includes an electret member, a receive (Rx) layer configured to exhibit a first d33 resonating mode coefficient and a transmit (Tx) layer configured to exhibit a second d33 resonating mode coefficient, the first coefficient being different from the second coefficient. The transducers are disposed on a flexible substrate.
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Patent Agency Ranking
公开(公告)号：WO2017192234A1
公开(公告)日：2017-11-09
申请号：PCT/US2017/026203
申请日：2017-04-05
Applicant: QUALCOMM INCORPORATED
Inventor： LU, Yipeng , BURNS, David William
Abstract: An apparatus may include an ultrasonic sensor array, a light source system and a control system. Some implementations may include an ultrasonic transmitter. The control system may be operatively configured to control the light source system to emit light that induces acoustic wave emissions inside a target object. The control system may be operatively configured to select a first acquisition time delay for the reception of acoustic wave emissions primarily from a first depth inside the target object. The control system may be operatively configured to acquire first ultrasonic image data from the acoustic wave emissions received by the ultrasonic sensor array during a first acquisition time window. The first acquisition time window may be initiated at an end time of the first acquisition time delay.
Abstract translation: 一种装置可以包括超声波传感器阵列，光源系统和控制系统。 一些实施可能包括超声波发射器。 控制系统可以可操作地配置为控制光源系统发射在目标物体内引起声波发射的光。 控制系统可以可操作地配置为选择用于主要从目标物体内部的第一深度接收声波发射的第一采集时间延迟。 控制系统可以可操作地配置为在第一获取时间窗口期间从超声波传感器阵列接收的声波发射获取第一超声波图像数据。 第一个采集时间窗口可以在第一个采集时间延迟结束时开始。
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17.发明申请
公开(公告)号：WO2023044511A1
公开(公告)日：2023-03-23
申请号：PCT/US2022/077113
申请日：2022-09-27
Applicant: QUALCOMM INCORPORATED
Inventor： STROHMANN, Jessica Liu , PANCHAWAGH, Hrishikesh Vijaykumar , KUO, Nai-Kuei , LU, Yipeng , LOPEZ, Ali , DJORDJEV, Kostadin Dimitrov
Abstract: Some disclosed implementations include an ultrasonic sensor stack and an acoustic resonator. The acoustic resonator may be configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in an ultrasonic frequency range that is suitable for ultrasonic fingerprint sensors. In some examples, the acoustic resonator may include one or more low-impedance layers residing between a first higher-impedance layer and a second higher-impedance layer. Each of the one or more low-impedance layers may have a lower acoustic impedance than an acoustic impedance of the first higher-impedance layer or an acoustic impedance of the second higher-impedance layer. At least one low-impedance layer may have a thickness corresponding to a multiple of a half wavelength at a peak frequency of the acoustic resonator. The peak frequency may be within a frequency range from 1 MHz. to 20 MHz.
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公开(公告)号：WO2018085853A1
公开(公告)日：2018-05-11
申请号：PCT/US2017/060441
申请日：2017-11-07
Applicant: QUALCOMM INCORPORATED
Inventor： STROHMANN, Jessica Liu , LU, Yipeng , HINGER, Ashish , BURNS, David William
IPC: G06K9/00
Abstract: A system may include a fingerprint sensor system and a control system. The system may be configured to transmit an ultrasonic wave including a first frequency. The control system may be configured to obtain dermis layer image data from a target object based on reflected portions of the ultrasonic waves received by the fingerprint sensor system. The dermis layer image data may correspond to ultrasonic waves received from the target object within a time interval corresponding with the dermis layer. The reflected portions of the ultrasonic wave corresponding to the dermis layer image data may include ultrasonic waves at a second frequency that is an integer multiple of the first frequency. The control system may be configured to determine whether a magnitude of the ultrasonic waves at the second frequency exceeds a harmonic threshold and, if the magnitude exceeds the harmonic threshold, the control system may perform an authentication process.
Abstract translation: 系统可以包括指纹传感器系统和控制系统。 该系统可以被配置为发送包括第一频率的超声波。 控制系统可以被配置为基于由指纹传感器系统接收的超声波的反射部分来从目标物体获得真皮层图像数据。 真皮层图像数据可对应于在与真皮层相对应的时间间隔内从目标物体接收的超声波。 对应于真皮层图像数据的超声波的反射部分可以包括具有为第一频率的整数倍的第二频率的超声波。 控制系统可以被配置为确定第二频率处的超声波的幅度是否超过谐波阈值，并且如果幅度超过谐波阈值，则控制系统可以执行认证过程。
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公开(公告)号：WO2018044393A1
公开(公告)日：2018-03-08
申请号：PCT/US2017/041399
申请日：2017-07-10
Applicant: QUALCOMM INCORPORATED
Inventor： BURNS, David William , GRIFFITHS, Jonathan Charles , LU, Yipeng
IPC: A61B5/00 , A61B5/05 , A61B8/08 , A61B5/117 , A61B5/1172
Abstract: An apparatus or a system may include an ultrasonic sensor array, a radio frequency (RF) source system and a control system. Some implementations may include a light source system and/or an ultrasonic transmitter system. The control system may be capable of controlling the RF source system to emit RF radiation and of receiving signals from the ultrasonic sensor array corresponding to acoustic waves emitted from portions of a target object in response to being illuminated with the RF radiation. The control system may be capable of acquiring ultrasonic image data from the acoustic wave emissions received from the target object.
Abstract translation: 装置或系统可以包括超声波传感器阵列，射频（RF）源系统和控制系统。 一些实现可以包括光源系统和/或超声波发射器系统。 控制系统可以能够控制RF源系统发射RF辐射并且接收来自超声波传感器阵列的信号，该信号对应于响应于被RF辐射照射而从目标物体的部分发射的声波。 控制系统可以能够从目标物体接收到的声波发射中采集超声波图像数据。
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20.发明申请INTEGRATED PIEZOELECTRIC MICROMECHANICAL ULTRASONIC TRANSDUCER PIXEL AND ARRAY 审中-公开集成压电微机械超声波传感器像素和阵列
公开(公告)号：WO2017066612A1
公开(公告)日：2017-04-20
申请号：PCT/US2016/057104
申请日：2016-10-14
Applicant: QUALCOMM INCORPORATED
Inventor： PANCHAWAGH, Hrishikesh Vijaykumar , GANTI, Suryaprakash , DJORDJEV, Kostadin Dimitrov , BURNS, David William , DICKINSON, Timothy Alan , KIDWELL JR, Donald William , SHENOY, Ravindra Vaman , LASITER, Jon Bradley , TANG, Hao-Yen , LU, Yipeng
CPC classification number: H01L27/20 , B06B1/0207 , B06B1/0607 , G01S7/52028 , G06F3/0436 , G06K9/0002 , H01L27/1214 , H01L41/1132 , H01L41/311
Abstract: An ultrasonic sensor pixel includes a substrate, a piezoelectric micromechanical ultrasonic transducer (PMUT) and a sensor pixel circuit. The PMUT includes a piezoelectric layer stack including a piezoelectric layer disposed over a cavity, the cavity being disposed between the piezoelectric layer stack and the substrate, a reference electrode disposed between the piezoelectric layer and the cavity, and one or both of a receive electrode and a transmit electrode disposed on or proximate to a first surface of the piezoelectric layer, the first surface being opposite from the cavity. The sensor pixel circuit is electrically coupled with one or more of the reference electrode, the receive electrode and the transmit electrode and the PMUT and the sensor pixel circuit are integrated with the sensor pixel circuit on the substrate.
Abstract translation: 超声波传感器像素包括衬底，压电微机械超声波换能器（PMUT）和传感器像素电路。 所述PMUT包括压电层堆叠，所述压电层堆叠包括布置在空腔上方的压电层，所述空腔设置在所述压电层堆叠和所述衬底之间，设置在所述压电层和所述空腔之间的参考电极，以及接收电极和 设置在所述压电层的第一表面上或接近所述压电层的第一表面的发射电极，所述第一表面与所述腔相对。 传感器像素电路与参考电极，接收电极和发射电极中的一个或多个电耦合，并且PMUT和传感器像素电路与基板上的传感器像素电路集成。
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