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公开(公告)号：US10943084B2
公开(公告)日：2021-03-09
申请号：US16502962
申请日：2019-07-03
Applicant: QUALCOMM Incorporated
IPC: G06K9/22 , G06K9/00 , H01L41/113 , H01L41/047 , G06F3/041
Abstract: Techniques described herein address these and other issues by providing an under-display sensor capable of providing fingerprint scanning over an entire display using optical and/or ultrasonic means. To do so, the sensor comprises an array of pixels, where each can pixel comprises a piezoelectric sensor element and a diode capable of being used as a photodetector during a light-sensing mode, and as a peak detector during a pressure-sensing mode. The sensor may further comprise a piezoelectric layer and one or more electrodes, which can generate a pressure wave during the pressure sensing mode.
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公开(公告)号：US10929636B2
公开(公告)日：2021-02-23
申请号：US16252408
申请日：2019-01-18
Applicant: QUALCOMM Incorporated
Inventor： Yipeng Lu , Hrishikesh Vijaykumar Panchawagh , Kostadin Dimitrov Djordjev , Chin-Jen Tseng , Nicholas Ian Buchan , Tsongming Kao , Jae Hyeong Seo
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：US20180336388A1
公开(公告)日：2018-11-22
申请号：US16049236
申请日：2018-07-30
Applicant: QUALCOMM Incorporated
IPC: G06K9/00
Abstract: This disclosure provides systems, methods and apparatus for a controller configured to switch operation of a fingerprint sensor among operational modes. In one aspect, a fingerprint sensor may switch from operating in a first operational mode to a second operational mode based on one or more characteristics of fingerprint image data generated with the fingerprint sensor operating in the first operational mode. One of the first operational mode or the second operational mode may be a capacitive sensing mode, and the other may be an ultrasonic sensing mode.
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公开(公告)号：US20180196982A1
公开(公告)日：2018-07-12
申请号：US15404893
申请日：2017-01-12
Applicant: QUALCOMM Incorporated
IPC: G06K9/00
CPC classification number: G06K9/0002 , G06K9/00073
Abstract: This disclosure provides systems, methods and apparatus for a controller configured to switch operation of a fingerprint sensor among operational modes. In one aspect, a fingerprint sensor may switch from operating in a first operational mode to a second operational mode based on one or more characteristics of fingerprint image data generated with the fingerprint sensor operating in the first operational mode. One of the first operational mode or the second operational mode may be a capacitive sensing mode, and the other may be an ultrasonic sensing mode.
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公开(公告)号：US10001552B2
公开(公告)日：2018-06-19
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: H01L41/09 , H01L41/113 , B06B1/06 , G01S7/52 , H01L41/047 , G10K11/34 , G06F3/041 , G06F3/043 , G06K9/00 , G10K11/26 , G01S7/521 , G01S15/04 , G01S15/89 , H01L41/08 , B06B1/02
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.
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Patent Agency Ranking
公开(公告)号：US09946914B1
公开(公告)日：2018-04-17
申请号：US15356424
申请日：2016-11-18
Applicant: QUALCOMM Incorporated
IPC: G06K9/00
CPC classification number: G06K9/0002 , G06K9/0008
Abstract: An apparatus may include an ultrasonic sensor system and a control system. The control system may be configured for controlling the ultrasonic sensor system to obtain first ultrasonic data from at least a part of a target object proximate a surface of the apparatus. The control system may be configured for receiving the first ultrasonic data from the ultrasonic sensor system and for identifying one or more fingerprint ridge features and one or more fingerprint valley features corresponding to the first ultrasonic data. The control system may be configured for determining, based on the first ultrasonic data, one or more fingerprint valley time intervals corresponding to a depth of one or more fingerprint valley features and for performing a spoof detection process based, at least in part, on the one or more fingerprint valley time intervals.
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公开(公告)号：US20170090028A1
公开(公告)日：2017-03-30
申请号：US14864555
申请日：2015-09-24
Applicant: QUALCOMM Incorporated
Inventor： Kostadin Dimitrov Djordjev , Christopher Mark William Daft , David William Burns , Ashish Hinger , Hrishikesh Vijaykumar Panchawagh
CPC classification number: G01S15/89 , G01S7/52079 , G01S7/521 , G01S15/8906 , G01S15/8956 , G06K9/0002
Abstract: Methods, systems and storage media are described, each of which may be used to generate an image of an object using ultrasonic plane waves. For example, the generated image may be of a target object positioned on a platen surface. The image may be derived from corrected output signals obtained from a plurality of selected sensor pixels. The corrected output signals may adjust for diffraction of reflected ultrasonic plane waves from a target object positioned on the platen surface. The target object may be a finger or a tip of a stylus.
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公开(公告)号：US12217530B2
公开(公告)日：2025-02-04
申请号：US18302241
申请日：2023-04-18
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
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.
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公开(公告)号：US12183113B2
公开(公告)日：2024-12-31
申请号：US17247734
申请日：2020-12-21
Applicant: QUALCOMM Incorporated
Inventor： Jessica Liu Strohmann , Hrishikesh Vijaykumar Panchawagh , Yipeng Lu , Chin-Jen Tseng , Kostadin Dimitrov Djordjev
Abstract: Various aspects of the present disclosure relate generally to ultrasonic fingerprint sensor. In some aspects, a device may include a flexible display. The device may include an ultrasonic fingerprint sensor that is configured to transmit and receive an ultrasonic signal in an acoustic path through the flexible display. The device may include an acoustics configuration layer that is situated between the display and the ultrasonic fingerprint sensor. The acoustics configuration layer may be configured to optimize a signal strength of the ultrasonic signal based at least in part on a configuration of one or more layers of the flexible display. Numerous other aspects are provided
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20.发明授权公开(公告)号：US11823483B2
公开(公告)日：2023-11-21
申请号：US17448031
申请日：2021-09-17
Applicant: QUALCOMM Incorporated
Inventor： Jessica Liu Strohmann , Hrishikesh Vijaykumar Panchawagh , Nai-Kuei Kuo , Yipeng Lu , Ali Lopez , Kostadin Dimitrov Djordjev
CPC classification number: G06V40/1306 , G06F21/32 , H03H9/17
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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