Patents by Inventor Yipeng Lu

Yipeng Lu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240046691
    Abstract: Methods, devices and systems for providing extended reality effects are disclosed. In some examples, a control system may control a structure to provide extended reality effects and also may control an ultrasound-based haptic system to create haptic effects via transmitted ultrasonic waves. The ultrasound-based haptic system may include one or more arrays of ultrasonic transducers, such as piezoelectric micromachined ultrasonic transducers (PMUTs), mounted in or on the structure. The haptic effects may be created via air-coupled ultrasonic waves.
    Type: Application
    Filed: August 3, 2022
    Publication date: February 8, 2024
    Inventors: Yipeng LU, Hrishikesh Vijaykumar PANCHAWAGH, Kostadin Dimitrov DJORDJEV
  • Publication number: 20240037979
    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.
    Type: Application
    Filed: October 13, 2023
    Publication date: February 1, 2024
    Inventors: Shiang-Chi LIN, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Yipeng LU, Chin-Jen TSENG, Kostadin Dimitrov DJORDJEV, Min-Lun YANG, Chia-Wei YANG
  • Patent number: 11823483
    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.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: November 21, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh, Nai-Kuei Kuo, Yipeng Lu, Ali Lopez, Kostadin Dimitrov Djordjev
  • Patent number: 11798307
    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.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: October 24, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Shiang-Chi Lin, Hrishikesh Vijaykumar Panchawagh, Jessica Liu Strohmann, Yipeng Lu, Chin-Jen Tseng, Kostadin Dimitrov Djordjev, Min-Lun Yang, Chia-Wei Yang
  • Patent number: 11798308
    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.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: October 24, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh, Nai-Kuei Kuo, Yipeng Lu, Ali Lopez, Kostadin Dimitrov Djordjev
  • Publication number: 20230252816
    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.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 10, 2023
    Inventors: Shiang-Chi LIN, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Yipeng LU, Chin-Jen TSENG, Kostadin Dimitrov DJORDJEV, Min-Lun YANG, Chia-Wei YANG
  • Patent number: 11703578
    Abstract: Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: July 18, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Jessica Liu Strohmann, Kostadin Dimitrov Djordjev
  • Publication number: 20230177863
    Abstract: Disclosed are methods, devices, apparatuses, and systems for an under-display ultrasonic fingerprint sensor. A display device may include a platen, a display underlying the platen, and an ultrasonic fingerprint sensor underlying the display, where the ultrasonic fingerprint sensor is configured to transmit and receive ultrasonic waves via an acoustic path through the platen and the display. A light-blocking layer and/or an electrical shielding layer may be provided between the ultrasonic fingerprint sensor and the display, where the light-blocking layer and/or the electrical shielding layer are in the acoustic path. A mechanical stress isolation layer may be provided between the ultrasonic fingerprint sensor and the display, where the mechanical stress isolation layer is in the acoustic path.
    Type: Application
    Filed: January 30, 2023
    Publication date: June 8, 2023
    Inventors: Hrishikesh Vijaykumar Panchawagh, IIa Ravindra Badge, Yipeng LU, Kostadin Dimitrov Djordjev, Suryaprakash Ganti, Chin-Jen Tseng, Nicholas Ian Buchan, Tsongming Kao, Leonard Eugene Fennell, Firas Sammoura, Jessica Liu Strohmann, David William Burns
  • Publication number: 20230086418
    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.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 23, 2023
    Inventors: Jessica Liu STROHMANN, Hrishikesh Vijaykumar PANCHAWAGH, Nai-Kuei KUO, Yipeng LU, Ali LOPEZ, Kostadin Dimitrov DJORDJEV
  • Publication number: 20230088820
    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.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 23, 2023
    Inventors: Jessica Liu STROHMANN, Hrishikesh Vijaykumar PANCHAWAGH, Nai-Kuei KUO, Yipeng LU, Ali LOPEZ, Kostadin Dimitrov DJORDJEV
  • Publication number: 20230063693
    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.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 2, 2023
    Inventors: Shiang-Chi LIN, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Yipeng LU, Chin-Jen TSENG, Kostadin Dimitrov DJORDJEV, Min-Lun YANG, Chia-Wei YANG
  • Patent number: 11436857
    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.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: September 6, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jessica Liu Strohmann, Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Kostadin Dimitrov Djordjev
  • Patent number: 11438703
    Abstract: An ultrasonic sensor array includes a plurality of ultrasonic transducers, each transducer including a piezoelectric member. Each of the transducers includes an electret member, a receive (Rx) layer configured to exhibit a first d33 resonating mode coefficient and a transmit (Tx) layer configured to exhibit a second d33 resonating mode coefficient, the first coefficient being different from the second coefficient. The transducers are disposed on a flexible substrate.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: September 6, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Yuri Kusano, Yipeng Lu, Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh
  • Publication number: 20220268906
    Abstract: Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.
    Type: Application
    Filed: May 13, 2022
    Publication date: August 25, 2022
    Inventors: Yipeng LU, Hrishikesh Vijaykumar PANCHAWAGH, Jessica Liu STROHMANN, Kostadin Dimitrov DJORDJEV
  • Patent number: 11393239
    Abstract: An ultrasonic sensor system may include an ultrasonic transceiver layer, a thin-film transistor (TFT) layer proximate a first side of the ultrasonic transceiver layer, a frequency-splitting layer proximate a second side of the ultrasonic transceiver layer and a high-impedance layer proximate the frequency-splitting layer. The frequency-splitting layer may reside between the ultrasonic transceiver layer and the high-impedance layer. The high-impedance layer may have a higher acoustic impedance than the frequency-splitting layer.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: July 19, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh, Nicholas Ian Buchan, Yipeng Lu, Kostadin Dimitrov Djordjev
  • Patent number: 11392249
    Abstract: An ultrasonic sensor includes a substrate, a platen and an acoustic stack disposed between the substrate and the platen, including at least one piezoelectric layer. The ultrasonic transducer exhibits a signal-to-noise ratio of at least 4 over a frequency range of at least 9 to 16 MHz.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: July 19, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Jessica Liu Strohmann, Yipeng Lu, Hrishikesh Vijaykumar Panchawagh
  • Publication number: 20220198172
    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.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 23, 2022
    Inventors: Jessica Liu STROHMANN, Hrishikesh Vijaykumar PANCHAWAGH, Yipeng LU, Chin-Jen TSENG, Kostadin Dimitrov DJORDJEV
  • Patent number: 11346927
    Abstract: Techniques for operating an ultrasonic sensor array, the ultrasonic sensor array disposed under a platen, include: making a determination whether or not to recalibrate the ultrasonic sensor array based on whether a first screen protector disposed above the platen has been removed or replaced by a second screen protector; and recalibrating the ultrasonic sensor array, when the determination is to recalibrate the ultrasonic sensor array. In some cases, the techniques include prompting a user to indicate whether or not the screen protector has been changed or removed, and recalibrating the ultrasonic sensor array only after confirmation from the user.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: May 31, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Yipeng Lu, Hrishikesh Vijaykumar Panchawagh, Jessica Liu Strohmann, Kostadin Dimitrov Djordjev
  • Patent number: 11238258
    Abstract: MEMS ultrasound fingerprint ID systems are provided. Aspects of the systems include the capability of detecting both epidermis and dermis fingerprint patterns in three dimensions. Also provided are methods of making and using the systems, as well as devices that include the systems.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: February 1, 2022
    Assignee: The Regents of the University of California
    Inventors: Yipeng Lu, David Horsley, Hao-Yen Tang, Bernhard Boser
  • Publication number: 20220004728
    Abstract: An ultrasonic sensor system may include an ultrasonic transceiver layer, a thin-film transistor (TFT) layer proximate a first side of the ultrasonic transceiver layer, a frequency-splitting layer proximate a second side of the ultrasonic transceiver layer and a high-impedance layer proximate the frequency-splitting layer. The frequency-splitting layer may reside between the ultrasonic transceiver layer and the high-impedance layer. The high-impedance layer may have a higher acoustic impedance than the frequency-splitting layer.
    Type: Application
    Filed: July 1, 2020
    Publication date: January 6, 2022
    Inventors: Jessica Liu Strohmann, Hrishikesh Vijaykumar Panchawagh, Nicholas Ian Buchan, Yipeng Lu, Kostadin Dimitrov Djordjev