US 12,219,803 B2
Display panel and display apparatus
Yu Cai, Wuhan (CN)
Assigned to WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan (CN)
Filed by WUHAN TIANMA MICROELECTRONICS CO., LTD., Wuhan (CN)
Filed on Oct. 21, 2021, as Appl. No. 17/507,421.
Claims priority of application No. 202110966030.8 (CN), filed on Aug. 23, 2021.
Prior Publication US 2022/0045304 A1, Feb. 10, 2022
Int. Cl. H10K 50/858 (2023.01); H10K 59/12 (2023.01)
CPC H10K 50/858 (2023.02) [H10K 59/12 (2023.02)] 21 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate;
a light-emitting component layer provided at a side of the substrate facing towards a light-emitting surface of the display panel and comprising light-emitting components; and
a light-extraction layer provided at a side of the light-emitting component layer facing towards the light-emitting surface of the display panel and comprising light-extraction structures and a peripheral structure, wherein a film in which the light-extraction structures are located is at a side away from the light-emitting component layer, of a film in which the peripheral structure is located, and the peripheral structure surrounds the light-extraction structures and has a refractive index smaller than a refractive index of each of the light-extraction structures,
wherein the light-emitting components comprise first-color light-emitting components, and an orthographic projection of one of the first-color light-emitting components on the substrate overlaps with an orthographic projection of one of the light-extraction structures on the substrate;
wherein the light-extraction structures comprise first light-extraction structures, and an orthographic projection of one of the first light-extraction structures on the substrate overlaps with an orthographic projection of one of the first-color light-emitting components on the substrate; and
wherein the first light-extraction structures comprise first sidewalls, wherein the first sidewalls comprise first sub-sidewalls and second sub-sidewalls, wherein a maximum angle formed between a tangent plane of one of the first sub-sidewalls and a plane of the substrate is a first angle α1, and a maximum angle formed between a tangent plane of one of the second sub-sidewalls and the plane of the substrate is a second angle α2, where α1≥α2.