US 12,327,426 B2
Ultrasonic fingerprint sensor for under-display applications
Hrishikesh Vijaykumar Panchawagh, Cupertino, CA (US); Ila Ravindra Badge, San Jose, CA (US); Yipeng Lu, Moraga, CA (US); Kostadin Dimitrov Djordjev, Los Gatos, CA (US); Suryaprakash Ganti, Los Altos, CA (US); Chin-Jen Tseng, Fremont, CA (US); Nicholas Ian Buchan, San Jose, CA (US); Tsongming Kao, Sunnyvale, CA (US); Leonard Eugene Fennell, San Jose, CA (US); Firas Sammoura, Dublin, CA (US); Jessica Liu Strohmann, Cupertino, CA (US); and David William Burns, San Jose, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jan. 30, 2023, as Appl. No. 18/103,060.
Application 18/103,060 is a continuation of application No. 16/006,640, filed on Jun. 12, 2018, abandoned.
Claims priority of provisional application 62/525,154, filed on Jun. 26, 2017.
Prior Publication US 2023/0177863 A1, Jun. 8, 2023
Int. Cl. G06V 40/13 (2022.01); B06B 1/06 (2006.01); G01S 7/52 (2006.01); G01S 15/89 (2006.01); H10K 59/00 (2023.01); H10K 59/65 (2023.01); H10K 77/00 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC G06V 40/1306 (2022.01) [B06B 1/0677 (2013.01); G01S 7/52079 (2013.01); G01S 15/8913 (2013.01); G01S 15/8925 (2013.01); H10K 59/00 (2023.02); H10K 59/65 (2023.02); H10K 77/111 (2023.02); H10K 2102/311 (2023.02)] 13 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a display;
an ultrasonic sensor system underlying the display and configured to transmit and receiving ultrasonic waves in an acoustic path through the display;
an electrical shielding layer between the ultrasonic sensor system and the display; and
a light-blocking layer between the display and the electrical shielding layer, wherein the light-blocking layer comprises an opaque plastic material, wherein each of the electrical shielding layer and the light-blocking layer is non-porous or substantially non-porous.