US 12,249,617 B2
Display panel and display device
Seungcheol You, Gyeonggi-do (KR); Wonrae Kim, Gyeonggi-do (KR); and SeungBum Lee, Gyeonggi-do (KR)
Assigned to LG Display Co., Ltd., (KR)
Filed by LG DISPLAY CO., LTD, Seoul (KR)
Filed on Nov. 17, 2021, as Appl. No. 17/528,762.
Claims priority of application No. 10-2020-0181589 (KR), filed on Dec. 23, 2020.
Prior Publication US 2022/0199678 A1, Jun. 23, 2022
Int. Cl. H01L 27/15 (2006.01); H01L 33/10 (2010.01); H01L 33/50 (2010.01)
CPC H01L 27/156 (2013.01) [H01L 33/10 (2013.01); H01L 33/502 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A display panel comprising:
a substrate on which a first subpixel expressing a first color, a second subpixel expressing a second color, and a third subpixel expressing a third color are defined;
a first reflector located on the substrate and having a hole corresponding to the first subpixel;
a planarization layer located on the substrate and occupying the hole;
a first transparent electrode located on the first reflector and the planarization layer;
an emissive layer located on the first transparent electrode and emitting light having the first color in the first subpixel, the second subpixel and the third subpixel;
a second transparent electrode located on the emissive layer;
a wavelength conversion layer located on the second transparent electrode, converting light having the first color into light having the second color in the second subpixel and converting light having the first color into light having the third color in the third subpixel; and
a second reflector located on the wavelength conversion layer,
wherein the first reflector reflects light having the first color and allows light having the second color and light having the third color to pass therethrough, and
wherein at least one of the first transparent electrode, the emissive layer and the second transparent electrode is disposed between the first reflector and the second reflector in a cross-sectional view.