Display device

Patent metadata

Field	Value
Publication number	US-10862071-B2
Application number	US-201916582921-A
Country	US
Kind code	B2
Filing date	Sep 25, 2019
Priority date	Dec 30, 2014
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

A display device includes: a substrate; a display unit on the substrate; a first inorganic layer on the display unit; a first organic layer on an upper portion of the first inorganic layer; a first dam at an edge of the first organic layer; a second dam spaced from the first dam and at an outer area of the first dam with respect to the display unit; and a stress relieving layer between the first dam and the second dam.

First claim

What is claimed is:

1. A display device comprising:
a substrate;
a display unit on the substrate and configured to emit light;
a first inorganic layer encapsulating the display unit;
a first organic layer on the first inorganic layer;
a second inorganic layer on the first organic layer, the second inorganic layer directly contacting the first inorganic layer outside of the first organic layer;
a first dam overlapping with at least a portion of the first organic layer;
a second dam spaced from the first dam and at an outer region of the first dam with respect to the display unit; and
a second organic layer between the first dam and the second dam, the first inorganic layer and the second inorganic layer overlapping with the first dam and extending toward the second dam, the second organic layer being on the first inorganic layer.

2. The display device of claim 1 , wherein the second organic layer comprises an organic material.

3. The display device of claim 1 , wherein the second organic layer comprises the same material as that of the first organic layer.

4. The display device of claim 1 , wherein the second organic layer is formed using an inkjet process.

5. The display device of claim 1 , wherein the second organic layer is located above the first dam.

6. The display device of claim 1 , further comprising a protection film below the substrate.

7. The display device of claim 6 , wherein the protection film is spaced from a display area and is inside a display area of the display device.

8. The display device of claim 6 , wherein an upper edge of the protection film is rounded.

9. The display device of claim 6 , wherein the substrate has a notch, and
wherein the notch is spaced from an edge of the protection film.

10. The display device of claim 1 , wherein the second organic layer is between an ELVSS and the second dam.

11. The display device of claim 10 , wherein the first dam overlaps with an upper portion of the ELVSS.

12. A display device comprising:
a substrate;
a display unit on the substrate, the display unit comprising a pixel electrode, a pixel defining layer over the pixel electrode and having an opening exposing a portion of the pixel electrode, an intermediate layer on the pixel electrode, and an opposite electrode on the intermediate layer and the pixel defining layer;
a first inorganic layer over the substrate and on the display unit;
a first organic layer on the first inorganic layer;
a second inorganic layer on the first organic layer, the second inorganic layer directly contacting the first inorganic layer outside of the first organic layer;
a first dam overlapping with at least a portion of the first organic layer, the first inorganic layer overlapping with the first dam; and
a second organic layer on the substrate at an outer area of the first dam with respect to the display unit, the second organic layer being over the first inorganic layer.

13. The display device of claim 12 , further comprising:
a second dam spaced from the first dam and at an edge of the second organic layer.

14. The display device of claim 12 , further comprising:
a protection film below the substrate.

15. The display device of claim 14 , wherein the protection film has a rounded upper edge.

16. The display device of claim 14 , wherein the substrate has a notch at a lower surface, and
wherein the notch is spaced from an edge of the protection film.

17. The display device of claim 12 , further comprising:
a second dam spaced from the first dam and at an outer region of the first dam with respect to the display unit.

18. The display device of claim 17 , wherein the second organic layer is located between an ELVSS and the second dam.

19. The display device of claim 12 , wherein the second organic layer comprises an organic material.

20. The display device of claim 12 , wherein the second organic layer comprises the same material as that of the first organic layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Chang Seungwook
• Kim Mugyeom
• Park Heechang
• Lee Younghee

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/8731 Primary

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

• H10K50/844

  Encapsulations · CPC title

• H10K77/10 Primary

  Substrates, e.g. flexible substrates · CPC title

• Y02E10/549

  Organic PV cells · CPC title