Organic light-emitting display device

Patent metadata

Field	Value
Publication number	US-11844242-B2
Application number	US-202117379913-A
Country	US
Kind code	B2
Filing date	Jul 19, 2021
Priority date	Nov 19, 2018
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

An organic light-emitting display device including a substrate; a pixel in a display area of the organic light-emitting display device, the pixel being implemented by an organic light-emitting diode on the substrate; a first inclination structure surrounding the pixel; a second inclination structure at least partially surrounding the first inclination structure; and a planarization layer covering the first inclination structure and the second inclination structure and having a refractive index that is greater than a refractive index of the first inclination structure and is greater than a refractive index of the second inclination structure, wherein a height of the first inclination structure is greater than a height of the second inclination structure.

First claim

What is claimed is:

1. A display device, comprising:
a substrate comprising a display area and a peripheral area;
a display element on the display area;
a thin-film encapsulation layer covering the display element;
a first inclination structure on the thin-film encapsulation layer, the first inclination structure being adjacent to the display element, the first inclination structure residing in the display area, the first inclination structure spaced outside of an emission area of the display element in a plan view;
a second inclination structure at least partially surrounding the first inclination structure in a plan view, the second inclination structure residing in the display area, and being spaced from the first inclination structure on the thin-film encapsulation layer in a direction away from the display element in the plan view; and
a planarization layer covering the first inclination structure and the second inclination structure and having a refractive index that is different from a refractive index of the first inclination structure and is different from a refractive index of the second inclination structure,
wherein the planarization layer is between the first inclination structure, and
wherein the second inclination structure and the planarization layer covers a side surface of the first inclination structure facing the second inclination structure.

2. The display device as claimed in claim 1 , wherein a height of the first inclination structure is different from a height of the second inclination structure.

3. The display device as claimed in claim 1 , wherein a width of a wall of the first inclination structure is different from a width of a wall of the second inclination structure.

4. The display device as claimed in claim 1 , further comprising a third inclination structure at least partially surrounding the second inclination structure, wherein a height of the second inclination structure is substantially the same as a height of the third inclination structure.

5. The display device as claimed in claim 1 , further comprising a third inclination structure at least partially surrounding the second inclination structure, wherein a height of the second inclination structure is different from a height of the third inclination structure.

6. The display device as claimed in claim 1 , wherein the second inclination structure has a closed loop shape.

7. The display device as claimed in claim 1 , wherein a cross-sectional shape of the first inclination structure has a tapered inclination, and an upper surface of the first inclined structure is smaller than a lower surface of the first inclined structure.

8. The display device as claimed in claim 1 , further comprising a touchscreen layer on the thin-film encapsulation layer, wherein the first inclination structure and the second inclination structure are on the touchscreen layer.

9. The display device as claimed in claim 1 , further comprising a dam in a peripheral area,
wherein the thin-film encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, and
wherein the first inorganic encapsulation layer and the second inorganic encapsulation layer directly contact each other outside the dam.

10. The display device as claimed in claim 1 , wherein the display element comprises an organic light-emitting diode.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Woongsik
• Byun Jinsu
• Sugitani Koichi
• Cha Gwangmin
• Han Saehee

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/879 Primary

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