公开(公告)号：US20180373913A1

公开(公告)日：2018-12-27

申请号：US16006640

申请日：2018-06-12

Applicant: QUALCOMM Incorporated

Inventor： Hrishikesh Vijaykumar Panchawagh ,  Ila 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

IPC: G06K9/00 ,  G01S15/89 ,  G01S7/52 ,  H01L27/32 ,  H01L51/00 ,  B06B1/06

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.

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

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：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

IPC: G06V40/13 ,  G06F1/16

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

公开(公告)号：US20230177863A1

公开(公告)日：2023-06-08

申请号：US18103060

申请日：2023-01-30

Applicant: QUALCOMM Incorporated

Inventor： 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

IPC: G06V40/13 ,  G01S15/89 ,  G01S7/52 ,  B06B1/06 ,  H10K59/00 ,  H10K59/65

CPC classification number: G06V40/1306 ,  G01S15/8925 ,  G01S7/52079 ,  B06B1/0677 ,  G01S15/8913 ,  H10K59/00 ,  H10K59/65 ,  H10K77/111

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.

公开(公告)号：US11126814B2

公开(公告)日：2021-09-21

申请号：US16525030

申请日：2019-07-29

Applicant: Qualcomm Incorporated

Inventor： Yipeng Lu ,  Hrishikesh Vijaykumar Panchawagh ,  Kostadin Dimitrov Djordjev ,  Jae Hyeong Seo ,  Nicholas Ian Buchan ,  Chin-Jen Tseng ,  Tsongming Kao

IPC: G06K9/00 ,  G06F3/041 ,  H01L27/32 ,  H01L51/00 ,  G06F21/32

Abstract: An ultrasonic fingerprint sensor system of the present disclosure may be provided with a flexible substrate. The ultrasonic fingerprint sensor system may include a film stack disposed on the flexible substrate that provides acceptable acoustic coupling for fingerprint sensing. The ultrasonic fingerprint sensor system includes a high acoustic impedance layer in an acoustic path of ultrasonic waves through a display. The high acoustic impedance layer can be electrically conductive or electrically nonconductive. In some implementations, the ultrasonic fingerprint sensor system includes an ultrasonic transceiver or an ultrasonic transmitter separate from an ultrasonic receiver.