US 11,915,510 B2
Fingerprint sensor and a display device including the same
Kyo Won Ku, Seoul (KR); Young Sik Kim, Yongin-si (KR); Jung Hak Kim, Hwaseong-si (KR); Jeong Heon Lee, Yongin-si (KR); and Hee Yeon Choi, Cheonan-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Aug. 2, 2021, as Appl. No. 17/391,250.
Claims priority of application No. 10-2020-0096582 (KR), filed on Aug. 3, 2020.
Prior Publication US 2023/0267759 A1, Aug. 24, 2023
Int. Cl. G06V 40/13 (2022.01); G06F 21/32 (2013.01); H01L 27/146 (2006.01); G06F 21/84 (2013.01)
CPC G06V 40/1318 (2022.01) [G06F 21/32 (2013.01); H01L 27/14623 (2013.01); G06F 21/84 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A fingerprint sensor, comprising:
a substrate;
a light sensing element that includes a sensing electrode disposed on the substrate, a semiconductor layer disposed on the sensing electrode, and a common electrode disposed on the semiconductor layer;
a light-blocking conductive layer disposed on the common electrode and including light transmitting holes; and
a light guide unit disposed on the light-blocking conductive layer,
the fingerprint sensor further comprising an insulating layer disposed on the common electrode,
wherein the light-blocking conductive layer is disposed on the insulating layer, and
wherein the light-blocking conductive layer is electrically insulated from the common electrode.