Display device

Patent metadata

Field	Value
Publication number	US-12245453-B2
Application number	US-202217746289-A
Country	US
Kind code	B2
Filing date	May 17, 2022
Priority date	Sep 9, 2021
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A display device includes a substrate including a display area and a non-display area surrounding the display area, a light emitting structure disposed on the substrate in the display area, a thin film encapsulation layer disposed on the light emitting structure, an optical structure including a first refractive pattern and a second refractive pattern, and a partition wall disposed on the substrate in the non-display area and surrounding the second refractive pattern. The first refractive pattern is disposed on the thin film encapsulation layer, and overlaps the light emitting structure. The second refractive pattern covers the first refractive pattern, has a refractive index smaller than a refractive index of the first refractive pattern, and includes an organic material.

First claim

What is claimed is:

1. A display device comprising:
a substrate including a display area and a non-display area surrounding the display area;
a light emitting structure disposed on the substrate in the display area;
a thin film encapsulation layer disposed on the light emitting structure;
an optical structure disposed on the thin film encapsulation layer, wherein the optical structure includes:
a first refractive pattern disposed on the thin film encapsulation layer and overlapping the light emitting structure; and
a second refractive pattern covering the first refractive pattern, having a refractive index smaller than a refractive index of the first refractive pattern, and including an organic material; and

a partition wall disposed on the substrate in the non-display area and surrounding the second refractive pattern.

2. The display device of claim 1 , wherein a distance from an upper surface of the substrate to an upper surface of the partition wall is greater than or equal to a distance from the upper surface of the substrate to an upper surface of the second refractive pattern.

3. The display device of claim 1 , wherein a thickness of the partition wall is greater than or equal to a thickness of an end of the second refractive pattern.

4. The display device of claim 1 , wherein an upper surface of the second refractive pattern is flat.

5. The display device of claim 1 , wherein the partition wall is in contact with an end of the second refractive pattern.

6. The display device of claim 1 , wherein the partition wall has an inverted taper shape.

7. The display device of claim 1 , further comprising:
a dam disposed between the substrate and the partition wall in the non-display area and surrounding at least a portion of the thin film encapsulation layer.

8. The display device of claim 7 , wherein the partition wall overlaps the dam.

9. The display device of claim 1 , wherein the partition wall includes a photoacid generator.

10. The display device of claim 1 , further comprising:
a first touch electrode disposed on the thin film encapsulation layer;
a protective layer disposed on the first touch electrode; and
a second touch electrode disposed on the protective layer,
wherein the partition wall is disposed on the protective layer.

11. A display device comprising:
a substrate including a display area and a non-display area surrounding the display area;
a light emitting structure disposed on the substrate in the display area;
a thin film encapsulation layer disposed on the light emitting structure;
an optical structure disposed on the thin film encapsulation layer, wherein the optical structure includes:
a first refractive pattern disposed on the thin film encapsulation layer, wherein an opening is defined through the first refractive pattern to overlap the light emitting structure; and
a second refractive pattern disposed on the first refractive pattern and in the opening, having a refractive index greater than a refractive index of the first refractive pattern, and including an organic material; and

a partition wall disposed on the substrate in the non-display area and surrounding the second refractive pattern.

12. The display device of claim 11 , wherein a distance from an upper surface of the substrate to an upper surface of the partition wall is greater than or equal to a distance from the upper surface of the substrate to an upper surface of the second refractive pattern.

13. The display device of claim 11 , wherein a thickness of the partition wall is greater than or equal to a thickness of an end of the second refractive pattern.

14. The display device of claim 11 , wherein an upper surface of the second refractive pattern is flat.

15. The display device of claim 11 , wherein the partition wall is in contact with an end of the second refractive pattern.

16. The display device of claim 11 , wherein the partition wall has an inverted taper shape.

17. The display device of claim 11 , further comprising:
a dam disposed between the substrate and the partition wall in the non-display area and surrounding at least a portion of the thin film encapsulation layer.

18. The display device of claim 17 , wherein the partition wall overlaps the dam.

19. The display device of claim 11 , wherein the partition wall includes a photoacid generator.

20. The display device of claim 11 , further comprising:
a first touch electrode disposed on the thin film encapsulation layer;
a protective layer disposed on the first touch electrode; and
a second touch electrode disposed on the protective layer,
wherein the partition wall is disposed on the protective layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jungi
• Kim Jeong Won
• Kim Woongsik
• Bae Donghwan
• Byun Jin-Su

Classifications

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K50/858

  comprising refractive means, e.g. lenses · CPC title

• H10K50/844 Primary

  Encapsulations · CPC title