Display panel

Patent metadata

Field	Value
Publication number	US-11737334-B2
Application number	US-202017119404-A
Country	US
Kind code	B2
Filing date	Dec 11, 2020
Priority date	Dec 17, 2019
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A display device includes a base layer, a first electrode on the base layer, a pixel defining layer on the base layer, the pixel defining layer including a display opening exposing the first electrode, a light emitting pattern on the first electrode, a second electrode on the light emitting pattern, a division pattern on the second electrode, the division pattern including a division opening overlapping the display opening, and a color filter in the division opening. The second electrode includes an electrode opening which overlaps the division opening and is spaced apart from the display opening.

First claim

What is claimed is:

1. A display device comprising:
a base layer;
a first electrode disposed on the base layer;
a pixel defining layer disposed on the base layer, the pixel defining layer including a display opening that exposes the first electrode;
a light emitting pattern disposed on the first electrode;
a second electrode disposed on the light emitting pattern, the second electrode including an electrode opening that passes completely though the second electrode;
a division pattern disposed on the second electrode, the division pattern including a division opening overlapping the display opening; and
a color filter disposed in the division opening, wherein
the electrode opening overlaps the division opening and is spaced apart from the display opening, and
a portion of the second electrode overlaps the division pattern.

2. The display device of claim 1 , wherein the second electrode comprises:
a first portion overlapping the light emitting pattern;
a second portion overlapping the division pattern; and
a third portion extending from the first portion to the second portion.

3. The display device of claim 2 , wherein the first portion has an area greater than an area of the third portion.

4. The display device of claim 2 , wherein the third portion is disposed in plurality in an area overlapping the division opening.

5. The display device of claim 4 , wherein the electrode opening is disposed in plurality in an area overlapping the division opening.

6. The display device of claim 1 , further comprising at least one of:
a hole transporting region disposed between the first electrode and the light emitting pattern; and
an electron transporting region disposed between the light emitting pattern and the second electrode.

7. The display device of claim 6 , wherein the electrode opening of the second electrode exposes a portion of one of the hole transporting region, the electron transporting region, and the pixel defining layer in an area overlapping the division opening.

8. The display device of claim 1 , wherein the division opening has an area greater than an area of the display opening.

9. The display device of claim 1 , wherein the pixel defining layer is a black pixel defining layer.

10. The display device of claim 1 , further comprising:
an encapsulation member disposed between the pixel defining layer and the color filter and overlapping the second electrode.

11. The display device of claim 10 , further comprising:
a detection sensor disposed between the encapsulation member and the color filter.

12. The display device of claim 1 , wherein the color filter comprises at least one of a red pigment or dye, a green pigment or dye, or a polymer photosensitive resin.

13. The display device of claim 1 , wherein
the light emitting pattern is disposed in plurality, and
the plurality of light emitting patterns have different areas from each other.

14. A display device comprising:
a base layer;
a first electrode disposed on the base layer;
a pixel defining layer disposed on the base layer, the pixel defining layer including a display opening that exposes the first electrode;
a light emitting pattern disposed on the first electrode;
a second electrode disposed on the light emitting pattern;
a division pattern disposed on the second electrode, the division pattern including a division opening overlapping the display opening; and
a color filter disposed in the division opening,
wherein the second electrode comprises:
a first portion overlapping the light emitting pattern;
a second portion overlapping the division pattern; and
a third portion extending from the first portion to the second portion, wherein
the second portion is spaced apart from the first portion with the third portion therebetween and the second portion surrounds at least a portion of the first portion.

15. The display device of claim 14 , wherein
an electrode opening, which overlaps the division opening and is spaced apart from the display opening, is defined in the second electrode, and
the electrode opening passes completely though the second electrode.

16. The display device of claim 14 , wherein the third portion is disposed in plurality in an area overlapping the division opening.

17. The display device of claim 16 , wherein the second electrode includes a plurality of electrode openings.

18. The display device of claim 14 , wherein the first portion has an area greater than an area of the third portion.

19. The display device of claim 14 , wherein the third portion is disposed in plurality in an area overlapping the division opening.

20. The display device of claim 14 , further comprising at least one of:
a hole transporting region disposed between the first electrode and the light emitting pattern; and
an electron transporting region disposed between the light emitting pattern and the second electrode.

21. The display device of claim 20 , wherein the electrode opening of the second electrode exposes a portion of one of the hole transporting region, the electron transporting region, and the pixel defining layer in an area overlapping the division opening.

22. The display device of claim 14 , wherein the division opening has an area greater than an area of the display opening.

23. The display device of claim 14 , wherein the pixel defining layer is a black pixel defining layer.

24. The display device of claim 14 , wherein the color filter comprises at least one of a red pigment or dye, a green pigment or dye, or a polymer photosensitive resin.

Assignees

• Samsung Display Co Ltd

Inventors

• Woo Junhyuk
• Choi Beohmrock

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/80521

  characterised by their shape · CPC title

• H10K59/80515

  characterised by their shape · CPC title

• H10K71/00

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