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公开(公告)号：US11798308B2
公开(公告)日：2023-10-24
申请号：US17448037
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 , B06B1/0688 , H10K59/65 , B06B2201/70
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：US11436857B1
公开(公告)日：2022-09-06
申请号：US17446438
申请日：2021-08-30
Applicant: QUALCOMM Incorporated
Inventor： Jessica Liu Strohmann , Yipeng Lu , Hrishikesh Vijaykumar Panchawagh , Kostadin Dimitrov Djordjev
Abstract: An apparatus may include an ultrasonic sensor system having an ultrasonic transceiver layer, a thin-film transistor (TFT) layer and a frequency-differentiating layer. In some examples, the frequency-differentiating layer may include a first frequency-differentiating layer area corresponding to a lower-frequency area of the ultrasonic sensor system. The first frequency-differentiating layer area may include a first material having a first acoustic impedance. In some such examples, the frequency-differentiating layer may include a second frequency-differentiating layer area corresponding to a higher-frequency area of the ultrasonic sensor system. The second frequency-differentiating layer area may include a second material having a second acoustic impedance. The first acoustic impedance may, for example, be higher than the second acoustic impedance.
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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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Patent Agency Ranking
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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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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9.发明申请ACTIVE BEAM-FORMING TECHNIQUE FOR PIEZOELECTRIC ULTRASONIC TRANSDUCER ARRAY 有权用于压电超声波传感器阵列的主动波束形成技术公开(公告)号：US20160131747A1
公开(公告)日：2016-05-12
申请号：US14883585
申请日：2015-10-14
Applicant: QUALCOMM Incorporated
Inventor： Hao-Yen Tang , Yipeng Lu , Hrishikesh Vijaykumar Panchawagh
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: An apparatus includes an array of pixels, each pixel including in-cell pixel logic and a piezoelectric micromechanical ultrasonic transducer (PMUT) element, each in-cell pixel logic being communicatively coupled with at least one adjacent pixel in the array. Transceiver electronics may operate the array in a selectable one of a first mode and a second mode. In the first mode, the array may generate a substantially plane ultrasonic wave. In the second mode, the array may generate, from at least one superpixel region, a focused beam of relatively high acoustic pressure, each superpixel region including at least one inner pixel disposed in a central portion of the superpixel region and at least a first group of outer pixels disposed in an outer portion of the superpixel region. The transceiver electronics may be configured to operate the array by configuring at least one in-cell pixel logic.
Abstract translation: 一种设备包括像素阵列，每个像素包括单元内像素逻辑和压电微机械超声换能器（PMUT）元件，每个单元内像素逻辑与阵列中的至少一个相邻像素通信耦合。 收发器电子器件可以以第一模式和第二模式中的可选择的一个操作阵列。 在第一模式中，阵列可以产生基本平面的超声波。 在第二模式中，阵列可以从至少一个超像素区域产生相对高声压的聚焦光束，每个超像素区域包括设置在超像素区域的中心部分中的至少一个内像素和至少一第一组 设置在超像素区域的外部的外部像素。 收发器电子设备可以被配置为通过配置至少一个单元内像素逻辑来操作阵列。
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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
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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