US 11,723,251 B2
Display panel with improved luminance or efficiency and display device comprising the same
Sunmi Lee, Gyeonggi-do (KR); JungSun Baek, Gyeonggi-do (KR); NamYong Kim, Gyeonggi-do (KR); GoEun Lim, Gyeonggi-do (KR); Seongjoo Lee, Gyeonggi-do (KR); Seungpyo Hong, Gyeonggi-do (KR); and Hyojae Lee, Gyeonggi-do (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Nov. 6, 2020, as Appl. No. 17/91,327.
Claims priority of application No. 10-2019-0141087 (KR), filed on Nov. 6, 2019; and application No. 10-2020-0125663 (KR), filed on Sep. 28, 2020.
Prior Publication US 2021/0134893 A1, May 6, 2021
Int. Cl. H10K 59/35 (2023.01); H10K 50/84 (2023.01); H10K 50/818 (2023.01); H10K 59/40 (2023.01); H10K 59/122 (2023.01)
CPC H10K 59/352 (2023.02) [H10K 50/818 (2023.02); H10K 50/84 (2023.02); H10K 59/122 (2023.02); H10K 59/40 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display panel including a plurality of sub-pixels, comprising:
a substrate;
an insulating film on the substrate and including a concave portion having a flat portion and an inclined portion surrounding the flat portion in one or more of the plurality of sub-pixels;
a first electrode on the insulating film, on an upper portion of the concave portion, and on a periphery portion extending from the concave portion, in the one or more sub-pixels;
a bank on the first electrode and the insulating film, and having an opening corresponding to a part of the flat portion in the one or more sub-pixels;
a light emitting layer on the first electrode and in the opening of the bank in the one or more sub-pixels;
a second electrode on the light emitting layer and the bank;
an encapsulation layer on the second electrode; and
a plurality of touch electrodes disposed on the encapsulation layer, each one of the plurality of touch electrodes including an open area,
wherein, in a viewing plane, the open area of at least one of the sub-pixels includes a first area through which light from the light emitting layer exits, a non-emission area completely surrounding the first area, and a second area around the non-emission area through which light from the light emitting layer exits.