US 11,726,621 B2
Display device
Chi-Wan Kim, Paju-si (KR); Tae-Heon Kim, Paju-si (KR); Sung-Eui Shin, Paju-si (KR); Yong-Woo Lee, Paju-si (KR); Kyung-Yeol Ryu, Paju-si (KR); Yu-Seon Kho, Paju-si (KR); and Yong-Gyoon Jang, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Sep. 10, 2022, as Appl. No. 17/942,137.
Application 17/942,137 is a continuation of application No. 16/710,201, filed on Dec. 11, 2019, granted, now 11,460,960.
Claims priority of application No. 10-2018-0170856 (KR), filed on Dec. 27, 2018.
Prior Publication US 2023/0004246 A1, Jan. 5, 2023
Int. Cl. G06F 3/045 (2006.01); G06F 3/044 (2006.01); G06F 3/041 (2006.01); H10N 30/30 (2023.01); H10N 30/85 (2023.01); H10N 30/853 (2023.01); H10N 30/00 (2023.01)
CPC G06F 3/044 (2013.01) [G06F 3/0414 (2013.01); H10N 30/10516 (2023.02); H10N 30/302 (2023.02); H10N 30/852 (2023.02); H10N 30/853 (2023.02); G06F 2203/04105 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display device, comprising:
a thin film transistor over a substrate;
an overcoat layer on the thin film transistor;
a first electrode on the overcoat layer;
a light-emitting layer on the first electrode;
a second electrode on the light-emitting layer;
an encapsulation layer on the second electrode;
a piezoelectric element over the encapsulation layer;
a touch panel over the piezoelectric element; and
a polarizing plate over the encapsulation layer,
wherein the piezoelectric element includes an upper electrode, a lower electrode, and a piezoelectric layer,
wherein a display area displaying an image and a non-display area surrounding the display area are defined on the substrate, and
wherein each of the lower electrode and the upper electrode has a larger area than a total area of electrodes of the touch panel formed in the display area.