Preparation method of display panel, display panel and displaying device

Patent metadata

Field	Value
Publication number	US-12342687-B2
Application number	US-202418584241-A
Country	US
Kind code	B2
Filing date	Feb 22, 2024
Priority date	Nov 14, 2019
Publication date	Jun 24, 2025
Grant date	Jun 24, 2025

Abstract

Disclosed are a display panel and a displaying device. The display panel includes a plurality of first-color subpixels, and each first-color subpixel includes a base, the base including a first driving electrode and a second driving electrode; at least one first electrode, disposed at a side of the base and is connected to the first driving electrode; at least one second electrode, disposed at a same side of the base with the first electrode and is connected to the second driving electrode; an intermediate layer, disposed between the first electrode and the second electrode; wherein the first electrode and the second electrode divide the first-color subpixel into a plurality of secondary pixels, the first electrode and the second electrode are insulated with each other via the intermediate layer, and are respectively connected to the first driving electrode and the second driving electrode, and control the secondary pixels independently.

First claim

The invention claimed is:

1. A display panel, comprising a plurality of first-color subpixels, wherein each first-color subpixel comprises:
a base, the base comprising a first driving electrode and a second driving electrode;
at least one first electrode, disposed at a side of the base and is connected to the first driving electrode;
at least one second electrode, disposed at a same side of the base with the first electrode and is connected to the second driving electrode;
an intermediate layer, disposed between the first electrode and the second electrode;
wherein the first electrode and the second electrode divide the first-color subpixel into a plurality of secondary pixels, the first electrode and the second electrode are insulated with each other via the intermediate layer, and are respectively connected to the first driving electrode and the second driving electrode, and control the secondary pixels independently;
wherein a front projection of the at least one first electrode on the base is adjacent to or partially overlaps with a front projection of an adjacent second electrode on the base;
wherein a front projection of a via hole of the first electrode on the base is located at a side of the front projection of electrodes of a secondary pixel on the base, and a front projection of a via hole of the second electrode on the base is located at an opposite side of the front projection of the electrodes of the secondary pixel on the base.

2. The display panel according to claim 1 , wherein there are multiple first electrodes and second electrodes, and front projections of the first electrodes on the base and front projections of the second electrodes on the base are alternately arranged.

3. The display panel according to claim 2 , wherein a number of the first electrodes and a number of the second electrodes are the same.

4. The display panel according to claim 1 , wherein the front projection of the at least one first electrode on the base partially overlaps with the front projection of the adjacent second electrode on the base, and an overlapping width is less than or equal to 2 μm.

5. The display panel according to claim 1 , wherein the intermediate layer comprises a passivation layer, a thickness of the passivation layer is greater than or equal to 50 nm and less than or equal to 250 nm.

6. The display panel according to claim 1 , wherein the intermediate layer comprises a passivation layer, the second electrode comprises a metal layer arranged on the side, away from the base, of the passivation layer, and ITO covering the side, away from the base, of the metal layer, and the metal layer is made of at least one of Ag, AlNd and Al.

7. The display panel according to claim 2 , wherein when the at least one first electrode is plural and the at least one second electrode is plural, front projections of via holes of at least two first electrodes on the base or front projections of via holes of at least two second electrodes on the base are located at one side of the front projection of the electrodes of the secondary pixel on the base.

8. The display panel according to claim 2 , wherein when the at least one first electrode is plural and the at least one second electrode is plural, the first electrodes and the second electrodes are arranged in array, and at least two first electrodes or at least two second electrodes are staggered in a row direction or in a column direction.

9. The display panel according to claim 1 , wherein the intermediate layer comprises a flat layer, the base comprises a substrate and a first thin film transistor and a second thin film transistor which are disposed on the side, near the flat layer, of the substrate, the first driving electrode is a source or drain of the first thin film transistor, and the second driving electrode is a source or drain of the second thin film transistor.

10. The display panel according to claim 1 , wherein shapes of front projections of the first electrode and the second electrode on the base are at least one of quadrangle, pentagon, hexagon and octagon.

11. The display panel according to claim 10 , wherein the front projections of the first electrode and the second electrode on the base are rectangular.

12. The display panel according to claim 1 , wherein each first-color subpixel further comprises a luminescent layer and a cathode which are disposed on the side, away from the base, of the first electrode and the second electrode, the luminescent layer is discontinuous at a junction of the first electrode and the second electrode, and the first electrode and the second electrode are anodes.

13. The display panel according to claim 1 , wherein the intermediate layer comprises a passivation layer and a flat layer, the base further comprises a third driving electrode;
a first passivation layer disposed on the side, away from the base, of the second electrode; and
at least one third electrode disposed on the side, away from the base, of the first passivation layer, the third electrode being connected with the third driving electrode through via holes penetrating the first passivation layer, the passivation layer and the flat layer.

14. The display panel according to claim 13 , wherein the base further comprises a fourth driving electrode;
a second passivation layer disposed on the side, away from the base, of the third electrode; and
at least one fourth electrode disposed on the side, away from the base, of the second passivation layer, the fourth electrode being connected with the fourth driving electrode through via holes penetrating the second passivation layer, the first passivation layer, the passivation layer and the flat layer.

15. The display panel according to claim 14 , wherein front projections of the at least one first electrode, the at least one second electrode, the at least one third electrode and the at least one fourth electrode on the base are distributed in an array along a first direction and a second direction, and the first direction and the second direction intersect.

16. The display panel according to claim 15 , wherein the front projections of the at least one first electrode, the at least one second electrode, the at least one third electrode and the at least one fourth electrode on the base are alternately arranged in the first direction.

17. The display panel according to claim 15 , wherein the combination of the front projections of the at least one first electrode, the at least one second electrode, the at least one third electrode and the at least one fourth electrode on the base is a continuously extending pattern.

18. The display panel according to claim 1 , wherein the intermediate layer comprises a flat layer and a patterned passivation layer, the patterned passivation layer is disposed at a side of the flat layer that is away from the base, the first electrode is connected to the first driving electrode via a via hole penetrating the flat layer, the second electrode is connected to the second driving electrode via a via hole penetrating the patterned passivation layer and the flat layer.

19. A displaying device, comprising the display panel according to claim 1 , wherein light emitted from a part of secondary pixels enters a left eye of a viewer, and light emitted from another part of secondary pixels enters a right eye of the viewer.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zhang Yongfeng
• Dong Xue
• Jiao Zhiqiang
• Zhao Lei
• Wang Jiushi

Classifications

• H10K59/80518

  Reflective anodes, e.g. ITO combined with thick metallic layers · CPC title

• H10K59/80515

  characterised by their shape · CPC title

• H10K59/35 Primary

  comprising red-green-blue [RGB] subpixels · CPC title

• H10K50/813

  characterised by their shape · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title