Display apparatus with spaced shielding wall portions within display area and peripheral area

Patent metadata

Field	Value
Publication number	US-11991897-B2
Application number	US-202117336828-A
Country	US
Kind code	B2
Filing date	Jun 2, 2021
Priority date	Jun 5, 2020
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

A display apparatus includes a substrate including a first area, and a second area adjacent to the first area; first to third light-emitting diodes that are arranged in the first area and include a color emission layer; an encapsulation layer overlapping the first to third light-emitting diodes, and including an inorganic layer and an organic layer; a first light shielding wall portion disposed on the encapsulation layer, the first light shielding wall portion including a 1-1-th opening portion, a 1-2-th opening portion, and a 1-3-th opening portion corresponding to the first to third light-emitting diodes, respectively; and a second light shielding wall portion disposed on the encapsulation layer and overlapping the second area. The first light shielding wall portion and the second light shielding wall portion are spaced apart from each other in a plan view.

First claim

What is claimed is:

1. A display apparatus comprising:
a substrate comprising a first area, and a second area adjacent to the first area;
a first light-emitting diode, a second light-emitting diode, and a third light-emitting diode that are arranged in the first area of the substrate and include a color emission layer;
an encapsulation layer overlapping the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode, and comprising at least one inorganic layer and at least one organic layer;
a first light shielding wall portion disposed on the encapsulation layer and not overlapping the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode, the first light shielding wall portion comprising a 1-1-th opening portion, a 1-2-th opening portion, and a 1-3-th opening portion corresponding to the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode, respectively; and
a second light shielding wall portion disposed on the encapsulation layer and overlapping the second area of the substrate; and
a driver arranged in the second area of the substrate and providing electrical signals to the first, second, and third light-emitting diodes, wherein
the first light shielding wall portion and the second light shielding wall portion are spaced apart from each other in a plan views,
at least a portion of the second light shielding wall portion overlaps the driver in a plan view.

2. The display apparatus of claim 1 , wherein the second light shielding wall portion is arranged along an edge of the substrate.

3. The display apparatus of claim 1 , further comprising:
a first color conversion layer located in the 1-1-th opening portion;
a second color conversion layer located in the 1-2-th opening portion; and
a light transmission layer located in the 1-3-th opening portion.

4. The display apparatus of claim 3 , wherein
the first color conversion layer, the second color conversion layer, and the light transmission layer each comprise scattering particles,
the first color conversion layer and the second color conversion layer comprise a first quantum dot and a second quantum dot, respectively, and
the first quantum dot and the second quantum dot comprise a same material and have different sizes from each other.

5. The display apparatus of claim 3 , wherein the second light shielding wall portion comprises a plurality of second opening portions.

6. The display apparatus of claim 5 , further comprising a first dummy color conversion layer, a second dummy color conversion layer, and a dummy light transmission layer,
wherein each of the first dummy color conversion layer, the second dummy color conversion layer, and the dummy light transmission layer is located in corresponding one of the plurality of second opening portions.

7. The display apparatus of claim 5 , further comprising a dummy light transmission layer located in the plurality of second opening portions.

8. The display apparatus of claim 6 , wherein the dummy light transmission layer and the light transmission layer comprise a same material.

9. The display apparatus of claim 1 , wherein the first light shielding wall portion and the second light shielding wall portion comprise a same material.

10. The display apparatus of claim 9 , wherein the first light shielding wall portion and the second light shielding wall portion each comprise a colored pigment or dye, and/or at least one metal oxide selected from titanium oxide, chromium oxide, and molybdenum oxide.

11. The display apparatus of claim 1 , wherein the first light shielding wall portion and the second light shielding wall portion each have a thickness of about 8 μm to about 20 μm.

12. The display apparatus of claim 1 , wherein
the first light shielding wall portion and the second light shielding wall portion each comprise a first surface facing the substrate and a second surface opposite to the first surface, and
the second surface is hydrophobic.

13. The display apparatus of claim 1 , wherein the second area is a peripheral area completely surrounding the display area.

14. The display apparatus of claim 1 , wherein the second light shielding wall portion is spaced apart from each of the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode.

15. A display apparatus comprising:
a substrate comprising a first area, and a second area adjacent to the first area;
a first light-emitting diode, a second light-emitting diode, and a third light-emitting diode that are arranged in the first area of the substrate and include a color emission layer;
an encapsulation layer overlapping the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode, and comprising at least one inorganic layer and at least one organic layer;
a first light shielding wall portion disposed on the encapsulation layer and not overlapping the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode, the first light shielding wall portion comprising a 1-1-th opening portion, a 1-2-th opening portion, and a 1-3-th opening portion corresponding to the first light-emitting diode, the second light-emitting diode, and the third light-emitting diode, respectively;
a second light shielding wall portion disposed on the encapsulation layer and overlapping the second area of the substrate; and
a driver arranged in the second area of the substrate and providing electrical signals to the first, second, and third light-emitting diodes, wherein
the first light shielding wall portion and the second light shielding wall portion are integral with each other,
the second light shielding wall portion comprises a plurality of second opening portions, and
at least a portion of the second light shielding wall portion overlaps the driver in a plan view.

16. The display apparatus of claim 15 , further comprising:
a first color conversion layer located in the 1-1-th opening portion;
a second color conversion layer located in the 1-2-th opening portion;
a light transmission layer located in the 1-3-th opening portion;
a first dummy color conversion layer;
a second dummy color conversion layer; and
a dummy light transmission layer,
wherein each of the first dummy color conversion layer, the second dummy color conversion layer, and the dummy light transmission layer is located in corresponding one of the plurality of second opening portions.

17. The display apparatus of claim 16 , wherein the dummy light transmission layer and the light transmission layer comprise a same material.

18. The display apparatus of claim 15 , further comprising:
a first color conversion layer located in the 1-1-th opening portion;
a second color conversion layer located in the 1-2-th opening portion;
a light transmission layer located in the 1-3-th opening portion; and
a dummy light transmission layer located in the plurality of second opening portions.

19. A display apparatus comprising:
a light-emitting unit comprising a display area from which light of a single color is emitted, and a peripheral area adjacent to the display area; and
an optical unit that converts or transmits light emitted from the light-emitting unit into lights of different colors, wherein
the light-emitting unit comprises:
pixel electrodes arranged in the display area;
an opposite electrode disposed above the pixel electrodes; and
an emission layer disposed between the p

Assignees

• Samsung Display Co Ltd

Inventors

• Park Kyunghae
• Kim Minhee
• Youn Dokyung
• Kim Minjae
• Kim Taehoon
• Na Eunjeong
• Park Joonhyung
• Yang Danbi
• Yu Hanjun
• Yuk Simbum
• Lee Changhun
• Jeong Kangseob

Classifications

• H10K59/88

  Dummy elements, i.e. elements having non-functional features · CPC title

• H10K59/8792

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

• H10K59/877

  comprising scattering means · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K50/844 Primary

  Encapsulations · CPC title