US 12,446,446 B2
Display panel and manufacturing method thereof with optical layers of different refractive indexes
Yiwen Li, Guangdong (CN); and Zhiyuan Yin, Guangdong (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
Filed on Mar. 31, 2023, as Appl. No. 18/129,513.
Claims priority of application No. 202211658548.6 (CN), filed on Dec. 22, 2022.
Prior Publication US 2024/0215407 A1, Jun. 27, 2024
Int. Cl. H10K 59/80 (2023.01); H10K 71/00 (2023.01)
CPC H10K 59/879 (2023.02) [H10K 71/00 (2023.02)] 14 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a substrate;
a first electrode layer located on the substrate;
an optical adjustment layer located on the first electrode layer, wherein the optical adjustment layer comprises a semiconductor oxide;
a light emitting functional layer located on the optical adjustment layer, wherein the light emitting functional layer comprises a plurality of light emitting units of different light emitting colors;
wherein the optical adjustment layer comprises a first optical layer and a second optical layer, the first optical layer corresponds to the light emitting units of a light emitting color, the second optical layer corresponds to the light emitting units of another light emitting color, and a refractive index of at least one film layer of the first optical layer is different from a refractive index of at least one film layer of the second optical layer;
wherein at least one of the first optical layer comprises a first sublayer and a second sublayer disposed adjacent to each other, and the second sublayer is located between the first sublayer and the light emitting functional layer;
wherein a refractive index of the second sublayer is greater than a refractive index of the first sublayer;
wherein the light emitting functional layer comprises a first organic sublayer, located on a surface of a side of the second sublayer away from the substrate, and the refractive index of the second sublayer is greater than a refractive index of the first organic sublayer.