US 12,457,846 B2
Display panel and display device
Yu Cai, Wuhan (CN); and Yaqi Kuang, Shanghai (CN)
Assigned to Hubei Yangtze Industrial Innovation Center of Advanced Display Co., LTD., Wuhan (CN)
Filed by Hubei Yangtze Industrial Innovation Center of Advanced Display Co., LTD., Wuhan (CN)
Filed on Mar. 22, 2022, as Appl. No. 17/701,465.
Prior Publication US 2023/0157062 A1, May 18, 2023
Int. Cl. H10K 59/38 (2023.01); H10K 50/858 (2023.01); H10K 50/86 (2023.01); H10K 59/122 (2023.01); H10K 59/173 (2023.01)
CPC H10K 50/858 (2023.02) [H10K 50/865 (2023.02); H10K 59/122 (2023.02); H10K 59/173 (2023.02); H10K 59/38 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display panel, comprising a first display area and a second display area, a light transmittance of the first display area being greater than a light transmittance of the second display area, wherein the display panel comprises:
a substrate;
a light emitting device layer, disposed on a side of the substrate, wherein the light emitting device layer comprises a pixel defining layer with a plurality of pixel openings and a plurality of light emitting units disposed in the plurality of pixel openings; and
a dimming layer, comprising at least one first dimming unit in the first display area, wherein the at least one first dimming unit comprises a first refraction section on a side of the light emitting device layer away from the substrate and a second refraction section covering the first refraction section on a side away from the substrate, a refractive index n1 of the first refraction section is smaller than a refractive index n2 of the second refraction section, the first refraction section comprises a first dimming opening corresponding to a first pixel opening in the first display area, and a projection of the first dimming opening along a direction perpendicular to the substrate overlaps a projection of the first pixel opening along the direction perpendicular to the substrate,
wherein the dimming layer further comprises at least one second dimming unit in the second display area, the at least one second dimming unit comprises a third refraction section on the side of the light emitting device layer away from the substrate and a fourth refraction section covering the third refraction section on the side away from the substrate, a refractive index n3 of the third refraction section is smaller than a refractive index n4 of the fourth refraction section, the third refraction section comprises a second dimming opening corresponding to a second pixel opening in the second display area, and a projection of the second dimming opening along the direction perpendicular to the substrate overlaps a projection of the second pixel opening along the direction perpendicular to the substrate, and
wherein (n2−n1)≥(n4−n3).