公开(公告)号：US11910716B1

公开(公告)日：2024-02-20

申请号：US18163714

申请日：2023-02-02

Applicant: QUALCOMM Incorporated

Inventor： Chin-Jen Tseng ,  Jessica Liu Strohmann ,  Ila Badge ,  Shiang-Chi Lin ,  Min-Lun Yang ,  Hrishikesh Vijaykumar Panchawagh

IPC: G06V40/13 ,  H10N30/00 ,  H10K59/90 ,  G06V40/12 ,  H10N39/00

CPC classification number: H10N30/10516 ,  G06V40/1306 ,  G06V40/1347 ,  H10K59/90 ,  H10N39/00

Abstract: An apparatus includes an ultrasonic sensor stack, a foldable display stack that includes a display stiffener, and an additional stiffener between the ultrasonic sensor stack and the foldable display stack. The additional stiffener forms an acoustic resonator with the display stiffener and an adhesive layer between the display stiffener and the additional stiffener in order to amplify transmission of ultrasonic waves transmitted by the ultrasonic sensor stack. The additional stiffener includes a material having a high modulus of elasticity, low density, and high acoustic impedance value. In some cases, the additional stiffener includes a metal, a ceramic, a glass, or a glass ceramic. The additional stiffener increases an overall stiffness and mechanical integrity of the apparatus so that a foam backer may be omitted from the ultrasonic sensor stack.

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：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.

公开(公告)号：US10817694B2

公开(公告)日：2020-10-27

申请号：US16362185

申请日：2019-03-22

Applicant: QUALCOMM Incorporated

Inventor： Yipeng Lu ,  Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh

IPC: G06K9/00

Abstract: The descried techniques may support a sensing scheme for reducing background signals in imaging sensors. A device may include a sensor configured to determine ridges and valleys of a fingerprint. The sensor may include a pixel array with each pixel of the pixel array having a set of electrodes. To reduce the background signals, the device may sense, e.g., during a transmit mode, a first set of signals associated with the pixel array using at least one electrode of the set of electrodes, and sense, e.g., during a receive mode, a second set of signals associated with the pixel array using the at least one electrode. The device may reduce a background signal associated with the sensor according to the sensing of the first set of signals and the second set of signals.

公开(公告)号：US20200302140A1

公开(公告)日：2020-09-24

申请号：US16362185

申请日：2019-03-22

Applicant: QUALCOMM Incorporated

Inventor： Yipeng Lu ,  Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh

IPC: G06K9/00

Abstract: The descried techniques may support a sensing scheme for reducing background signals in imaging sensors. A device may include a sensor configured to determine ridges and valleys of a fingerprint. The sensor may include a pixel array with each pixel of the pixel array having a set of electrodes. To reduce the background signals, the device may sense, e.g., during a transmit mode, a first set of signals associated with the pixel array using at least one electrode of the set of electrodes, and sense, e.g., during a receive mode, a second set of signals associated with the pixel array using the at least one electrode. The device may reduce a background signal associated with the sensor according to the sensing of the first set of signals and the second set of signals.

公开(公告)号：US20200279087A1

公开(公告)日：2020-09-03

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 ,  G01S15/89 ,  G01S7/52

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.