Manufacturing method of display panel, display panel and display device

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

providing a base substrate;

forming a planarization layer on a side of the base substrate;

forming a first film layer on a side of the planarization layer facing away from the base substrate;

forming an anode via penetrating through the first film layer and the planarization layer;

forming an anode layer on a side of the first film layer facing away from the base substrate;

patterning the anode layer to form a first opening on the anode layer; and

after patterning the anode layer, patterning the first film layer to form a second opening on the first film layer;

wherein a material of the first film layer comprises a non-metallic material; the first opening penetrates through the anode layer, and the second opening at least partially penetrates through the first film layer; and an orthographic projection of the second opening on the base substrate at least partially overlaps an orthographic projection of the first opening on the base substrate.

2. The manufacturing method of a display panel according to claim 1 , wherein the patterning the anode layer to form a first opening comprises:

coating a photoresist layer on a side of the anode layer facing away from the base substrate;

patterning the photoresist layer to form a photoresist pattern; and

etching, by using the photoresist pattern as a mask plate, the anode layer to form the first opening on the anode layer.

3. The manufacturing method of a display panel according to claim 2 , wherein the material of the first film layer is different from a material of the photoresist layer.

4. The manufacturing method of a display panel according to claim 3 , wherein after patterning the anode layer, patterning the first film layer to form a second opening on the first film layer comprises:

etching, by using the photoresist pattern as a mask plate, the first film layer to form the second opening on the first film layer.

5. The manufacturing method of a display panel according to claim 3 , further comprising:

removing the photoresist layer;

wherein after patterning the anode layer, patterning the first film layer to form a second opening on the first film layer comprises:

etching, by using the anode layer formed with the first opening as a mask plate, the first film layer to form the second opening.

6. The manufacturing method of a display panel according to claim 3 , wherein the material of the first film layer comprises an organic material or an inorganic material.

7. The manufacturing method of a display panel according to claim 6 , wherein the first film layer comprises the organic material, and a material of the planarization layer is the same as the material of the first film layer; and the planarization layer and the first film layer are formed by a same manufacturing process.

8. The manufacturing method of a display panel according to claim 6 , wherein the first film layer comprises the organic material or the inorganic material; and

after patterning the anode layer, patterning the first film layer to form a second opening on the first film layer comprises:

after patterning the anode layer, dry etching the first film layer to form the second opening on the first film layer;

wherein a gas flow during a dry etching process is greater than a preset gas flow threshold.

9. The manufacturing method of a display panel according to claim 2 , wherein a material of the first film layer is the same as a material of the photoresist layer; and

after patterning the anode layer, patterning the first film layer to form a second opening on the first film layer comprises:

simultaneously removing the photoresist layer and a part of the first film layer exposed by the first opening to form the second opening on the first film layer.

10. A display panel manufactured by the method according to claim 1 , comprising:

the base substrate and the planarization layer, wherein the planarization layer is disposed on a side of the base substrate; and

the first film layer and the anode layer, wherein the first film layer is disposed on a side of the planarization layer facing away from the base substrate, and the anode layer is disposed on a side of the first film layer facing away from the base substrate; and the

anode via is provided in the first film layer and the planarization layer, and the anode layer is filled in the anode via;

the anode layer is provided with the first opening, and the first opening penetrates through the anode layer; and the first film layer is provided with the second opening, and the second opening at least partially penetrates through the first film layer; and

the material of the first film layer is a non-metallic material; and an orthographic projection of the second opening on the base substrate at least partially overlaps the orthographic projection of the first opening on the base substrate.

11. The display panel according to claim 10 , wherein a vertical projection of the second opening on the base substrate overlaps the vertical projection of the first opening on the base substrate.

12. The display panel according to claim 10 , wherein the material of the first film layer comprises an organic material or an inorganic material.

13. The display panel according to claim 12 , wherein the material of the first film layer comprises the inorganic material, and the second opening partially penetrates through the first film layer.

14. The display panel according to claim 12 , wherein the material of the first film layer comprises the organic material, and the second opening penetrates through the first film layer.

15. The display panel according to claim 12 , wherein the material of the first film layer comprises the organic material, and the material of the first film layer is the same as a material of the planarization layer.

16. The display panel according to claim 10 , further comprising:

a driver circuit layer, disposed between the base substrate and the first film layer;

a light-emitting layer, disposed on a side of the anode layer facing away from the base substrate; and

a cathode layer, disposed on a side of the light-emitting layer facing away from the base substrate.

17. The display panel according to claim 16 , further comprising a display region and a non-display region surrounding the display region;

wherein the driver circuit layer comprises a plurality of thin film transistors and a first power signal line; and

the anode layer comprises a connection electrode and a plurality of anodes, the plurality of anodes are disposed in the display region, the plurality of anodes are connected to the plurality of thin film transistors through vias, the connection electrode is at least partially disposed in the non-display region, the connection electrode is connected to the first power signal line through a via, and the connection electrode is connected to the cathode layer.

18. A display device, comprising the dispaly panel according to claim 10 .