公开(公告)号：US20160107194A1

公开(公告)日：2016-04-21

申请号：US14883583

申请日：2015-10-14

Applicant: QUALCOMM Incorporated

Inventor： Hrishikesh Vijaykumar Panchawagh ,  Hao-Yen Tang ,  Yipeng Lu ,  Kostadin Dimitrov Djordjev ,  Suryaprakash Ganti ,  David William Burns ,  Ravindra Vaman Shenoy ,  Jon Bradley Lasiter ,  Nai-Kuei Kuo ,  Firas Sammoura

IPC: B06B1/06 ,  H01L41/047 ,  H01L41/053 ,  H01L41/04

CPC classification number: G01S7/5208 ,  B06B1/0207 ,  B06B1/0607 ,  B06B1/0644 ,  B06B1/0666 ,  B06B2201/20 ,  B06B2201/55 ,  G01S7/521 ,  G01S15/04 ,  G01S15/89 ,  G01S15/8915 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/043 ,  G06F3/0436 ,  G06F2203/04101 ,  G06K9/0002 ,  G06K9/00335 ,  G10K11/26 ,  G10K11/34 ,  G10K11/341 ,  G10K11/346 ,  H01L41/047 ,  H01L41/08

Abstract: A piezoelectric micromechanical ultrasonic transducer (PMUT) includes a diaphragm disposed over a cavity, the diaphragm including a piezoelectric layer stack including a piezoelectric layer, a first electrode electrically coupled with transceiver circuitry, and a second electrode electrically coupled with the transceiver circuitry. The first electrode may be disposed in a first portion of the diaphragm, and the second electrode may be disposed in a second, separate, portion of the diaphragm. Each of the first and the second electrode is disposed on or proximate to a first surface of the piezoelectric layer, the first surface being opposite from the cavity. The PMUT is configured to transmit first ultrasonic signals by way of the first electrode during a first time period and to receive second ultrasonic signals by way of the second electrode during a second time period, the first time period and the second time period being at least partially overlapping.

Abstract translation: 压电微机械超声换能器（PMUT）包括设置在空腔上方的隔膜，所述隔膜包括压电层堆叠，所述压电层堆叠包括压电层，与收发器电路电耦合的第一电极和与所述收发器电路电耦合的第二电极。 第一电极可以设置在隔膜的第一部分中，并且第二电极可以设置在隔膜的第二，分离的部分中。 第一和第二电极中的每一个设置在压电层的第一表面上或其附近，第一表面与空腔相对。 PMUT被配置为在第一时间段期间通过第一电极传输第一超声波信号，并且在第二时间段期间通过第二电极接收第二超声波信号，第一时间段和第二时间段至少是 部分重叠。

公开(公告)号：US20160019408A1

公开(公告)日：2016-01-21

申请号：US14553823

申请日：2014-11-25

Applicant: QUALCOMM Incorporated

Inventor： Jianwei Liu ,  Norman Satoru Himaka ,  Sherman Sebastian Antao ,  Micah Timothy Lawrence ,  David William Burns ,  Kostadin Dimitrov Djordjev

IPC: G06K9/00

CPC classification number: G06K9/0002 ,  G01R31/2829 ,  H01H11/0062

Abstract: Techniques for testing ultrasonic fingerprint sensors include operating a fingerprint impress simulator that may cyclically press a contact pad of the simulator against a platen of an ultrasonic sensor under test. A control electronics arrangement may operate the ultrasonic sensor under test and the fingerprint impress simulator, and may receive ultrasonic image data from the ultrasonic sensor under test. The ultrasonic sensor may include an ultrasonic transmitter and an ultrasonic sensor array disposed between the ultrasonic transmitter and the platen. The control electronics arrangement may cause the ultrasonic transmitter to emit an ultrasonic pulse, and may receive ultrasonic image data from the ultrasonic sensor array, the ultrasonic image data being converted from a detected portion of the ultrasonic pulse.

Abstract translation: 用于测试超声波指纹传感器的技术包括操作指纹打印模拟器，其可循环地将模拟器的接触垫压靠在被测超声波传感器的压板上。 控制电子装置可以操作被测超声波传感器和指纹打印模拟器，并且可以从被测超声波传感器接收超声波图像数据。 超声波传感器可以包括超声波发射器和设置在超声波发射器和压板之间的超声波传感器阵列。 控制电子装置可以使超声波发射器发射超声波脉冲，并且可以从超声波传感器阵列接收超声波图像数据，超声波图像数据从超声波脉冲的检测部分转换。

公开(公告)号：US12169977B2

公开(公告)日：2024-12-17

申请号：US18486914

申请日：2023-10-13

Applicant: QUALCOMM Incorporated

Inventor： Shiang-Chi Lin ,  Hrishikesh Vijaykumar Panchawagh ,  Jessica Liu Strohmann ,  Yipeng Lu ,  Chin-Jen Tseng ,  Kostadin Dimitrov Djordjev ,  Min-Lun Yang ,  Chia-Wei Yang

IPC: G06V40/13 ,  G01S7/52 ,  G06F21/32

Abstract: An apparatus may include an ultrasonic sensor stack, a foldable display stack and a transmission enhancement layer. The foldable display stack may include a display stiffener and display stack layers. The display stack layers may form one or more display stack resonators configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in a first ultrasonic frequency range. In some implementations, a transmission enhancement resonator may include the display stiffener and the transmission enhancement layer. In some examples, the transmission enhancement resonator may include at least a portion of the ultrasonic sensor stack. The transmission enhancement resonator may be configured to enhance the ultrasonic waves transmitted by the ultrasonic sensor stack in the first ultrasonic frequency range.

公开(公告)号：US11716566B2

公开(公告)日：2023-08-01

申请号：US17301061

申请日：2021-03-23

Applicant: QUALCOMM Incorporated

Inventor： Bernard Herrera ,  Jessica Liu Strohmann ,  Changting Xu ,  Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev

IPC: H04R3/12 ,  G10K11/178 ,  G06F3/041 ,  G06F3/043 ,  H04R1/02 ,  H04R1/40 ,  H04R17/00

CPC classification number: H04R3/12 ,  G06F3/0416 ,  G06F3/0436 ,  G10K11/17873 ,  H04R1/028 ,  H04R1/403 ,  H04R17/00 ,  G10K2210/3027 ,  H04R2499/15

Abstract: Some disclosed devices may include a display stack, a cover layer proximate a first side of the display stack and a segmented transducer array proximate a second side of the display stack. The segmented transducer array may include a plurality of separate transducer segments. Each of the separate transducer segments may include a piezoelectric layer and a thin-film transistor (TFT) layer. The separate transducer segments may include transmitter transducer segments and receiver transducer segments. In some examples, a spacing between at least a first plurality of the transmitter transducer segments may correspond to a display stack and cover layer oscillation mode frequency in a range from 20 Hz to 20 kHz, from 15 kHz to 200 kHz or from 20 kHz to 400 kHz.

公开(公告)号：US11695865B2

公开(公告)日：2023-07-04

申请号：US17813141

申请日：2022-07-18

Applicant: QUALCOMM Incorporated

Inventor： Sandeep Louis D'Souza ,  Vadim Winebrand ,  Mohamed Ahmed ,  Syed Fawad Ahmad ,  Nathan Felix Altman ,  Suhail Jalil ,  Livingstone Song ,  Raj Kumar ,  David Chandler ,  Masoud Roham ,  Xin Fan ,  Lennart Karl-Axel Mathe ,  Kostadin Dimitrov Djordjev ,  Deep Bhatia

IPC: H04M1/72448

CPC classification number: H04M1/72448 ,  H04M2250/12

Abstract: Various aspects of the present disclosure generally relate to control of a user device under a wet condition. In some aspects, a user device may determine whether the user device is operating under a wet condition; select, based at least in part on whether the user device is operating under the wet condition, a set of input components to control the user device, wherein the set of input components is selected from a plurality of different sets of input components; and configure a user interface of the user device according to the set of input components. Numerous other aspects are provided.

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.

公开(公告)号：US11087107B2

公开(公告)日：2021-08-10

申请号：US16545741

申请日：2019-08-20

Applicant: QUALCOMM Incorporated

Inventor： Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh ,  Yipeng Lu ,  Soon Joon Yoon ,  Kostadin Dimitrov Djordjev

IPC: G06K9/00 ,  G06F3/042 ,  H01L41/253 ,  H01L41/187 ,  H01L41/29

Abstract: A device and method for producing said device comprising an improved ultrasonic biometric sensor is disclosed. The ultrasonic biometric sensor is composed of a pixel array and multiple copolymer layers which are polarized in such a fashion as to increase the transmitting pressure and receiving sensitivity of the sensor. The copolymer layers may be polarized in the same direction, or in opposite directions, depending on the desired functionality.

公开(公告)号：US11003884B2

公开(公告)日：2021-05-11

申请号：US15430389

申请日：2017-02-10

Applicant: QUALCOMM Incorporated

Inventor： Nicholas Ian Buchan ,  Mario Francisco Velez ,  Chin-Jen Tseng ,  Hrishikesh Vijaykumar Panchawagh ,  Firas Sammoura ,  Jessica Liu Strohmann ,  Kostadin Dimitrov Djordjev ,  David William Burns ,  Leonard Eugene Fennell ,  Jon Gregory Aday

IPC: G06K9/00 ,  G01N29/22 ,  G01N29/24 ,  H01L41/047 ,  H01L41/107 ,  G02F1/1333 ,  H01L27/32

Abstract: A fingerprint sensor device includes a sensor substrate, a plurality of sensor circuits over a first surface of the sensor substrate, and a transceiver layer located over the plurality of sensor circuits and the first surface of the sensor substrate. The transceiver layer includes a piezoelectric layer and a transceiver electrode positioned over the piezoelectric layer. The piezoelectric layer and the transceiver electrode are configured to generate one or more ultrasonic waves or to receive one or more ultrasonic waves. The fingerprint sensor device may include a cap coupled to the sensor substrate and a cavity formed between the cap and the sensor substrate. The cavity and the sensor substrate may form an acoustic barrier.

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.

公开(公告)号：US10891458B2

公开(公告)日：2021-01-12

申请号：US16289394

申请日：2019-02-28

Applicant: QUALCOMM Incorporated

Inventor： Jae Hyeong Seo ,  Kostadin Dimitrov Djordjev ,  Hrishikesh Vijaykumar Panchawagh ,  Sameer Wadhwa ,  Nicholas Ian Buchan ,  Yipeng Lu

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

Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with an ultrasonic transmitter or ultrasonic transceiver having an electrode layer divided into a plurality of electrode segments. The ultrasonic fingerprint sensor system may detect an object over one or more electrode segments and provide a voltage burst to one or more selected electrode segments for localized generation of ultrasonic waves. The localized generation of ultrasonic waves may facilitate localized readout for imaging. In some implementations, the voltage burst may be provided in a single-ended drive scheme or differential drive scheme.