Display Panel And Display Device

A display panel, comprising:

• a substrate;
• a plurality of light-emitting units located on a side of the substrate;
• a first organic layer located on a side of the plurality of light-emitting units facing away from the substrate;
• and
• a plurality of light extraction structures located between the plurality of light-emitting units and the first organic layer and in direct contact with the first organic layer,
• wherein each of the plurality of light extraction structures comprises a plurality of light extraction layers, refractive indexes of the plurality of light extraction layers gradually decrease in a direction facing towards the first organic layer, and a refractive index of any one of the plurality of light extraction layers is greater than a refractive index of the first organic layer,
• wherein the plurality of light extraction layers at least comprises a first light extraction layer, and a second light extraction layer located between the first light extraction layer and the first organic layer, the first light extraction layer has a first central axis and is symmetrical about the first central axis, the second light extraction layer has a second central axis and is symmetrical about the second central axis, and the first central axis and the second central axis are perpendicular to the substrate, and
• wherein a contact a surface of the second light extraction layer contacting the first light extraction layer is a first surface, a surface of the second light extraction layer facing away from the first light extraction layer is a second surface, and at least one of the first surface and the second surface comprises straight line in a cross-section perpendicular to the substrate.