Patent ID: 11882721
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A display panel, comprising:
a substrate; and
a light-emitting device and a packaging structure on the substrate, the packaging structure sealing the light-emitting device on the substrate;
wherein the light-emitting device comprises a cathode, an anode, and a light-emitting layer between the cathode and the anode;
the packaging structure comprises a first inorganic packaging layer, and the first inorganic packaging layer comprises a first inorganic packaging sublayer, a second inorganic packaging sublayer, and a third inorganic packaging sublayer that are sequentially stacked; and
a refractive index of the second inorganic packaging sublayer is greater than a refractive index of the first inorganic packaging sublayer, and a difference between the refractive index of the second inorganic packaging sublayer and the refractive index of the first inorganic packaging sublayer is greater than 0.1, the refractive index of the second inorganic packaging sublayer is greater than a refractive index of the third inorganic packaging sublayer, and a difference between the refractive index of the second inorganic packaging sublayer and the refractive index of the third inorganic packaging sublayer is greater than 0.1,
wherein a thickness of the third inorganic packaging sublayer is greater than 5 times a thickness of the first inorganic packaging sublayer and greater than 3.3 times a thickness of the second inorganic packaging sublayer,
wherein the display panel further comprises a light extraction layer between the light-emitting device and the packaging structure, and a refractive index of the light extraction layer is greater than the refractive index of the first inorganic packaging sublayer, and a difference between the refractive index of the light extraction layer and the refractive index of the first inorganic packaging sublayer is greater than 0.2.