US 12,426,482 B2
Display panel and display apparatus
Shucheng Ge, Wuhan (CN)
Assigned to WuHan TianMa Micro-electronics Co., Ltd., Wuhan (CN)
Filed by WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., Wuhan (CN)
Filed on Mar. 28, 2023, as Appl. No. 18/191,361.
Claims priority of application No. 202211370871.3 (CN), filed on Nov. 3, 2022.
Prior Publication US 2023/0240121 A1, Jul. 27, 2023
Int. Cl. H10K 59/80 (2023.01); H10K 50/80 (2023.01); H10K 50/858 (2023.01); H10K 59/00 (2023.01); H10K 59/12 (2023.01)
CPC H10K 59/879 (2023.02) [H10K 59/12 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate; and
a light extraction layer disposed at a side of the substrate,
wherein the light extraction layer comprises light extraction structures and a peripheral structure surrounding the light extraction structures, and the peripheral structure has a refractive index smaller than the light extraction structure;
wherein each light extraction structure comprises a first portion and a second portion, the second portion is located at a side of the first portion away from the substrate, and an area of an orthographic projection of the second portion on the substrate is greater than an area of an orthographic projection of the first portion on the substrate, and wherein the first portion comprises a first sidewall, the second portion comprises a second sidewall, and the first sidewall and the second sidewall are both inclined; and
wherein in a direction from one end of the first sidewall adjacent to the substrate and to one end of the first sidewall away from the substrate, the first sidewall extends away from a first axis, and, in a direction from one end of the second sidewall adjacent to the substrate and to one end of the second sidewall away from the substrate, the second sidewall extends toward the first axis, wherein the first axis is perpendicular to the substrate, and passes through a center of an orthographic projection of the light extraction structure on the substrate.