Manufacturing method of display panel

1. A manufacturing method of a display panel, comprising:

forming a pattern of a first electrode layer on a first substrate;

forming a continuous retaining wall on the first substrate;

coating a nano particle solution on the pattern of the first electrode layer and the first substrate;

providing a second substrate formed with a pattern of a second electrode layer, wherein the second substrate is disposed opposite to the first substrate, and the pattern of the first electrode layer corresponds to the pattern of the second electrode layer;

connecting the pattern of the first electrode layer and the pattern of the second electrode layer to a power supply to perform a patterning treatment on the nano particle solution to make the nano particle solution form a pattern of a nano particle layer; and

removing the second substrate.

2. The manufacturing method of the display panel according to claim 1 , wherein the step of forming the pattern of the first electrode layer on the first substrate comprises:

providing the first substrate;

coating a first metal film layer on the first substrate; and

patterning the first metal film layer by a first mask process to make the first metal film layer form the pattern of the first electrode layer including at least two first electrode units.

3. The manufacturing method of the display panel according to claim 1 , wherein the retaining wall is disposed on an edge region of the first substrate, and the pattern of the first electrode layer is disposed within the retaining wall.

4. The manufacturing method of the display panel according to claim 3 , wherein the nano particle solution covers the pattern of the first electrode layer and the first substrate, and a thickness of the nano particle solution is less than a thickness of the retaining wall.

5. The manufacturing method of the display panel according to claim 1 , wherein nano particles in the nano particle solution comprise one of quantum dots, holes, or electrons.

6. The manufacturing method of the display panel according to claim 2 , wherein the step of providing the second substrate formed with the pattern of the second electrode layer, and wherein the second substrate is disposed opposite to the first substrate, comprises:

providing the second substrate;

coating a second metal film layer on the second substrate; and

patterning the second metal film layer by a second mask process to make the second metal film layer form the pattern of the second electrode layer including at least two second electrode units.

7. The manufacturing method of the display panel according to claim 6 , wherein an orthographic projection of the second electrode units on the first electrode units coincides with the first electrode units.

8. The manufacturing method of the display panel according to claim 1 , wherein the pattern of the nano particle layer comprises at least two nano particle units;

one of the nano particle units corresponds to one of the first electrode units or/and one of the second electrode units; and

a pattern of the nano particle units is same as patterns of the first electrode units and the second electrode units.

9. The manufacturing method of the display panel according to claim 1 , wherein the step of connecting the pattern of the first electrode layer and the pattern of the second electrode layer to the power supply to perform the patterning treatment on the nano particle solution to make the nano particle solution form the pattern of the nano particle layer comprises:

applying an alternating current to the pattern of the first electrode layer and the pattern of the second electrode layer to form an alternating current electric field between the pattern of the first electrode layer and the pattern of the second electrode layer;

the alternating current electric field making the nano particles in the nano particle solution aggregate between the pattern of the first electrode layer and the pattern of the second electrode layer; and

removing a solvent from the nano particle solution by a predetermined process to form the pattern of the nano particle layer.

10. The manufacturing method of the display panel according to claim 9 , wherein the step of removing the solvent from the nano particle solution by the predetermined process comprises:

removing the solvent from the nano particle solution by heating or vacuuming; or

adding a reactive monomer to the nano particle solution and removing the solvent from the nano particle solution by heating or UV curing.