Method for manufacturing light-emitting element, method for manufacturing display panel, and display panel

A method for manufacturing a display panel, comprising:

• forming a plurality of hollow nanospheres of different sizes, wherein the plurality of hollow nanospheres are each filled with a respective light-emitting material;
• disposing the plurality of hollow nanospheres of different sizes on a substrate;
• screening the plurality of hollow nanospheres of different sizes so that the plurality of hollow nanospheres of different sizes are stacked in layers on the substrate according to their sizes, wherein the smaller the size of a hollow nanosphere, the closer the hollow nanosphere is to the substrate;
• heating the plurality of hollow nanospheres of different sizes so that the plurality of hollow nanospheres sublime, and the respective light-emitting materials in the plurality of hollow nanospheres of different sizes are stacked and distributed in layers on the substrate to form a light-emitting element;
• and
• forming an encapsulation layer and a color filter layer to form the display panel;
• wherein the hollow nanospheres of an equal size are filled with an identical light-emitting material, and wherein the hollow nanospheres of different sizes are filled with different light-emitting materials;
• wherein the light-emitting materials are each an organic light-emitting material.

A display panel, comprising a light-emitting element manufactured by a method comprising:

• forming a plurality of hollow nanospheres of different sizes, wherein the plurality of hollow nanospheres are each filled with a respective light-emitting material;
• disposing the plurality of hollow nanospheres of different sizes on a substrate;
• screening the plurality of hollow nanospheres of different sizes so that the plurality of hollow nanospheres of different sizes are stacked in layers on the substrate according to their sizes, wherein the smaller the size of a hollow nanosphere, the closer the hollow nanosphere is to the substrate;
• heating the plurality of hollow nanospheres of different sizes so that the plurality of hollow nanospheres sublime, and the light-emitting materials in the plurality of hollow nanospheres of different sizes are stacked and distributed in layers on the substrate to form the light-emitting element;
• wherein the hollow nanospheres of an equal size are filled with an identical light-emitting material, and wherein the hollow nanospheres of different sizes are filled with different light-emitting materials;
• wherein the light-emitting materials are each an organic light-emitting material.