US 12,322,202 B2
Display device and method of driving the same
Jong Tae Kim, Seoul (KR); and Sang Wook Yoo, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Dec. 17, 2021, as Appl. No. 17/555,367.
Application 17/555,367 is a continuation of application No. 16/738,854, filed on Jan. 9, 2020, granted, now 11,205,062.
Claims priority of application No. 10-2019-0027485 (KR), filed on Mar. 11, 2019.
Prior Publication US 2022/0114828 A1, Apr. 14, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/044 (2006.01); G06F 3/01 (2006.01); G06F 3/041 (2006.01); G06F 21/32 (2013.01); G06V 40/13 (2022.01); H10N 30/20 (2023.01); H10N 30/50 (2023.01); H05K 1/18 (2006.01)
CPC G06V 40/1306 (2022.01) [G06F 3/016 (2013.01); G06F 3/0412 (2013.01); G06F 21/32 (2013.01); H10N 30/20 (2023.02); H10N 30/50 (2023.02); H05K 1/189 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel;
a fingerprint sensor which is disposed on a surface of the display panel and emits ultrasonic waves; and
a vibration device which is disposed on a surface of the fingerprint sensor and generates vibrations,
wherein the vibration device includes a first vibration layer, and the fingerprint sensor includes a second vibration layer,
wherein the vibration device comprises:
a first electrode to which a first driving voltage is applied; and
a second electrode to which a second driving voltage is applied, wherein the first vibration layer is disposed between the first electrode and the second electrode, wherein the first vibration layer contracts or expands in response to the first driving voltage applied to the first electrode and the second driving voltage applied to the second electrode, and
wherein the fingerprint sensor comprises:
a third electrode to which a third driving voltage is applied; and
fourth electrodes to which a fourth driving voltage is applied, wherein the second vibration layer is disposed between the third electrode and the fourth electrodes, wherein the second vibration layer contracts or expands in response to the third driving voltage applied to the third electrode and the fourth driving voltage applied to the fourth electrodes.