公开(公告)号：CA3024317A1

公开(公告)日：2017-12-21

申请号：CA3024317

申请日：2017-06-05

Applicant: QUALCOMM INC

Inventor： BUCHAN NICHOLAS IAN ,  VELEZ MARIO FRANCISCO ,  TSENG CHIN-JEN ,  PANCHAWAGH HRISHIKESH VIJAYKUMAR ,  SAMMOURA FIRAS ,  STROHMANN JESSICA LIU ,  DJORDJEV KOSTADIN DIMITROV ,  BURNS DAVID WILLIAM ,  FENNELL LEONARD EUGENE ,  ADAY JON GREGORY

IPC: G06K9/00 ,  G01N29/22

Abstract: A fingerprint sensor device includes a sensor substrate, a plurality of sensor circuits over a first surface of the sensor substrate, and a transceiver layer located over the plurality of sensor circuits and the first surface of the sensor substrate. The transceiver layer includes a piezoelectric layer and a transceiver electrode positioned over the piezoelectric layer. The piezoelectric layer and the transceiver electrode are configured to generate one or more ultrasonic waves or to receive one or more ultrasonic waves. The fingerprint sensor device may include a cap coupled to the sensor substrate and a cavity formed between the cap and the sensor substrate. The cavity and the sensor substrate may form an acoustic barrier.

公开(公告)号：SG11201910414UA

公开(公告)日：2020-01-30

申请号：SG11201910414U

申请日：2018-06-14

Applicant: QUALCOMM INC

Inventor： PANCHAWAGH HRISHIKESH VIJAYKUMAR ,  BADGE ILA RAVINDRA ,  LU YIPENG ,  DJORDJEV KOSTADIN DIMITROV ,  GANTI SURYAPRAKASH ,  TSENG CHIN-JEN ,  BUCHAN NICHOLAS IAN ,  KAO TSONGMING ,  FENNELL LEONARD EUGENE ,  SAMMOURA FIRAS ,  STROHMANN JESSICA LIU ,  BURNS DAVID WILLIAM

IPC: G06K9/00 ,  G06F3/043

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.