Display device including dam and groove structure in non-display area

Patent metadata

Field	Value
Publication number	US-12075647-B2
Application number	US-202117467611-A
Country	US
Kind code	B2
Filing date	Sep 7, 2021
Priority date	Dec 9, 2020
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

A display device includes a display area including a light emitting element and an organic insulating layer on the light emitting element; and a non-display area adjacent to the display area in a first direction, the non-display area including a first dam spaced apart from the organic insulating layer in the first direction, and a first groove between the organic insulating layer and the first dam in the first direction.

First claim

What is claimed is:

1. A display device comprising:
a base layer comprising an inorganic insulating layer;
a display area including:
an organic insulating layer on the base layer, and
a light emitting element on the organic insulating layer;

a non-display area entirely surrounding the display area, the non-display area including:
dams including a first dam which is on the base layer, spaced apart from the organic insulating layer in a first direction and closest to the organic insulating layer among all the dams, and
a first groove which is defined in the base layer and between the organic insulating layer and the first dam in the first direction, the first groove disposed entirely along the non-display area.

2. The display device of claim 1 , wherein along the first direction, the first groove is spaced apart from each of the organic insulating layer and the first dam.

3. The display device of claim 1 , wherein within the non-display area:
the first dam which is spaced apart from the organic insulating layer in the first direction defines a first opening therebetween, and
the first groove is open to the first opening which is between the organic insulating layer and the first dam.

4. The display device of claim 3 , wherein within the non-display area the first opening which is between the organic insulating layer and the first dam extends in a second direction crossing the first direction.

5. The display device of claim 4 , wherein within the first opening of the non-display area, the first groove includes a plurality of groove patterns spaced apart from each other.

6. The display device of claim 5 , wherein the groove patterns are arranged along the second direction.

7. The display device of claim 4 , wherein within the non-display area the first groove has a stripe shape.

8. The display device of claim 7 , wherein the stripe shape of the first groove extends along the second direction.

9. The display device of claim 1 , wherein in the non-display area, the dams further include a second dam spaced apart from the first dam in the first direction.

10. The display device of claim 9 , wherein the non-display area further includes a second groove between the first dam and the second dam in the first direction.

11. The display device of claim 10 , wherein along the first direction, the second groove is spaced apart from each of the first dam and the second dam.

12. The display device of claim 10 , wherein
the second dam which is spaced apart from the first dam defines a second opening therebetween, and
the second groove corresponds to the second opening which is between the first dam and the second dam.

13. The display device of claim 1 , wherein
the base layer further comprises a substrate and the inorganic insulating layer which are in the display area and in the non-display area, and
the substrate, the inorganic insulating layer, the organic insulating layer and the light emitting element are in order in the display area.

14. The display device of claim 13 , wherein
the substrate includes a side surface and a bottom surface in the non-display area corresponding to a shape of the first groove, and
the inorganic insulating layer extends from the display area to cover the side surface and the bottom surface of the substrate at the first groove and to define the first groove.

15. The display device of claim 13 , wherein
the substrate includes a side surface and a bottom surface in the non-display area,
the inorganic insulating layer includes a side surface in the non-display area which defines a hole in the inorganic insulating layer,
the hole in the inorganic insulating layer exposes the substrate to outside the inorganic insulating layer, and
the side surface of the substrate, the bottom surface of the substrate and the side surface of the inorganic insulating layer together define the first groove.

16. The display device of claim 13 , wherein
the inorganic insulating layer includes a side surface in the non-display area which defines the first groove in the non-display area, and
the first groove defined by the inorganic insulating layer exposes the substrate to outside the inorganic insulating layer at the first groove.

17. The display device of claim 1 , further comprising:
the base layer, a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer in both the display area and the non-display area, and
the base layer, the light emitting element, the first inorganic encapsulation layer, the organic encapsulation layer and the second inorganic encapsulation layer in order in the display area,
wherein
the organic encapsulation layer includes an outer edge which is furthest from the display area in the first direction, and
the outer edge of the organic encapsulation layer is between the display area and the first dam.

18. The display device of claim 17 , wherein in the non-display area each of the first inorganic encapsulation layer and the second inorganic encapsulation layer extends further than the first dam in the first direction.

19. The display device of claim 18 , wherein
the base layer includes a side surface and a bottom surface in the non-display area which define the first groove in the non-display area, and
the first inorganic encapsulation layer extends from the display area to cover the side surface and the bottom surface of the base layer at the first groove.

20. The display device of claim 18 , wherein
the base layer includes a side surface and a bottom surface in the non-display area,
the first inorganic encapsulation layer includes a side surface in the non-display area which is aligned with the side surface of the base layer, and
the side surface of the base layer, the bottom surface of the base layer and the side surface of the first inorganic encapsulation layer together define the first groove.

21. The display device of claim 18 , wherein
the base layer further comprises:
a substrate and the inorganic insulating layer which is on the substrate, and
in the non-display area, a side surface defined by the inorganic insulating layer and a bottom surface defined by the substrate,

the first inorganic encapsulation layer includes a side surface in the non-display area,
the side surface of the first inorganic encapsulation layer, the side surface of the the inorganic insulating layer and the bottom surface of the substrate together define the first groove, and
the substrate is exposed to outside the first inorganic encapsulation layer at the first groove.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Daehong
• Lee Jeongmoon

Classifications

• H10W10/17

  formed using trench refilling with dielectric materials, e.g. shallow trench isolations · CPC title

• H10W10/0145

  of trenches having shapes other than rectangular or V-shape (H10W10/0143 takes precedence) · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K50/8445

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

• H10K71/00

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