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.