公开(公告)号：US20180276439A1

公开(公告)日：2018-09-27

申请号：US15469290

申请日：2017-03-24

Applicant: QUALCOMM Incorporated

Inventor： Jessica Liu Strohmann ,  Yair Karmi ,  Yipeng Lu ,  Hrishikesh Vijaykumar Panchawagh ,  David William Burns

IPC: G06K9/00 ,  G06F3/041 ,  G06F3/043

Abstract: A mobile device may include a first fingerprint sensor, including a platen, residing on a first side of the mobile device, and a display residing on a second side of the mobile device. The second side may be opposite from the first side. The mobile device may include a control system configured for communication with the first fingerprint sensor and the display. The control system may be further configured for receiving first fingerprint sensor signals from the first fingerprint sensor corresponding to a fingerprint contact area of a first finger positioned on the platen, for detecting one or more finger distortions corresponding to changes of the first fingerprint sensor signals and for controlling the mobile device based, at least in part, on the one or more finger distortions.

公开(公告)号：US20170323132A1

公开(公告)日：2017-11-09

申请号：US15149048

申请日：2016-05-06

Applicant: QUALCOMM Incorporated

Inventor： Yipeng Lu ,  David William Burns

IPC: G06K9/00

CPC classification number: G06K9/0002 ,  A61B5/0095 ,  A61B5/14532 ,  A61B5/14542 ,  A61B5/14546 ,  A61B5/6898 ,  A61B5/7225 ,  A61B2562/0204 ,  A61B2562/0242 ,  G06K9/00093 ,  G06K9/00107 ,  G06K9/00201 ,  G06K9/4638 ,  G06K2009/00932

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.

公开(公告)号：US20170110504A1

公开(公告)日：2017-04-20

申请号：US15292057

申请日：2016-10-12

Applicant: QUALCOMM Incorporated

Inventor： Hrishikesh Vijaykumar Panchawagh ,  Suryaprakash Ganti ,  Kostadin Dimitrov Djordjev ,  David William Burns ,  Timothy Alan Dickinson ,  Donald William Kidwell, JR. ,  Ravindra Vaman Shenoy ,  Jon Bradley Lasiter ,  Hao-Yen Tang ,  Yipeng Lu

IPC: H01L27/20 ,  H01L27/12 ,  G06F3/043 ,  G01S7/52 ,  G06K9/00 ,  H01L41/113 ,  H01L41/311

CPC classification number: H01L27/20 ,  B06B1/0207 ,  B06B1/0607 ,  G01S7/52028 ,  G06F3/0436 ,  G06K9/0002 ,  H01L27/1214 ,  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.

公开(公告)号：US20160132187A1

公开(公告)日：2016-05-12

申请号：US14883586

申请日：2015-10-14

Applicant: QUALCOMM Incorporated

Inventor： Yipeng Lu ,  Hao-Yen Tang ,  Hrishikesh Vijaykumar Panchawagh

IPC: G06F3/043 ,  G06F3/041 ,  G06K9/00 ,  G10K11/26

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 array of piezoelectric ultrasonic transducer elements includes a plurality of superpixel regions. Each superpixel region includes at least two pixel sets, a first pixel set of the at least two pixel sets being disposed in a central portion of the superpixel region, and at least a second pixel set being disposed in an outer portion of the superpixel region. An electrical coupling may be provided between the array and transceiver electronics. The transceiver electronics may be configured to operate the array in a selectable one of a first mode and a second mode. In the first mode, the array generates a substantially plane ultrasonic wave having a first acoustic pressure. In the second mode, the array generates, from each superpixel region, a focused beam having a second acoustic pressure that is substantially higher than the first acoustic pressure.

Abstract translation: 一组压电超声换能器元件包括多个超像素区域。 每个超像素区域包括至少两个像素组，所述至少两个像素组的第一像素组被布置在超像素区域的中心部分中，并且至少第二像素组被布置在超像素区域的外部部分中。 可以在阵列和收发器电子设备之间提供电耦合。 收发器电子设备可以被配置为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，阵列产生具有第一声压的基本平面的超声波。 在第二模式中，阵列从每个超像素区域产生具有明显高于第一声压的第二声压的聚焦光束。

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：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：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.