Display device including corner display having cutouts and dams

Patent metadata

Field	Value
Publication number	US-12016195-B2
Application number	US-202117483629-A
Country	US
Kind code	B2
Filing date	Sep 23, 2021
Priority date	Sep 24, 2020
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A display device includes: a display panel having a front portion, a first bending portion, a second bending portion, and a corner portion, the display panel including a plurality of first pixels disposed in the front portion and a plurality of second pixels disposed in the corner portion. The display panel includes: a substrate; a first dam surrounding the plurality of first pixels; and a second dam surrounding the plurality of second pixels. The substrate includes a plurality of cutout patterns disposed in the corner portion, the plurality of second pixels and the second dam are disposed in each of the plurality of cutout patterns, and a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

First claim

What is claimed is:

1. A display device, comprising:
a display panel having a front portion, a first bending portion extending from a first side of the front portion, a second bending portion extending from a second side of the front portion, and a corner portion disposed between the first bending portion and the second bending portion, the display panel comprising a plurality of first pixels disposed in the front portion and a plurality of second pixels disposed in the corner portion,
wherein the display panel comprising:
a substrate;
a first dam disposed on the substrate and surrounding the plurality of first pixels; and
a second dam disposed on the substrate and surrounding the plurality of second pixels,
wherein the substrate comprises a plurality of cutout patterns disposed in the corner portion, at least some of the plurality of cutout patterns being separated from each other,
the plurality of second pixels and the second dam are disposed in each of the plurality of cutout patterns, and
a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

2. The display device of claim 1 , wherein the first dam comprises a plurality of first unit patterns and a plurality of second unit patterns, and wherein:
the plurality of first unit patterns are repeatedly arranged and spaced apart from each other, and
the plurality of second unit patterns are repeatedly arranged and spaced apart from each other.

3. The display device of claim 2 , wherein the plurality of first unit patterns and the plurality of second unit patterns are arranged in substantially parallel.

4. The display device of claim 3 , wherein each of the first unit patterns and the second unit patterns has a rectangular shape or a hexagonal shape.

5. The display device of claim 2 , further comprising a connection dam disposed on the substrate and connecting the second dam respectively disposed in the plurality of cutout patterns.

6. The display device of claim 1 , further comprising an organic encapsulation layer comprising:
a first organic layer disposed on the plurality of first pixels and covering the plurality of first pixels, and
a second organic layer disposed on the plurality of second pixels and covering the plurality of second pixels,
wherein the first organic layer overlaps the first dam and the second dam.

7. The display device of claim 6 , wherein the first organic layer covers an entire area of the first dam, and fills an area between the first dam and the second dam.

8. The display device of claim 7 , wherein a thickness of the first organic layer is greater than a thickness of the second organic layer.

9. The display device of claim 8 , wherein the thickness of the first organic layer is in a range of about 7 μm to about 9 μm, and the thickness of the second organic layer is in a range of about 3 μm to about 5 μm.

10. The display device of claim 1 , wherein each of the first dam and the second dam has an under-cut shape.

11. The display device of claim 1 , wherein:
the first bending portion has a first curvature,
the second bending portion has a second curvature, and
the corner portion has a double curvature bent by the first curvature and the second curvature.

12. The display device of claim 11 , wherein the first curvature is different from the second curvature.

13. A display device, comprising:
a display panel having a front portion, a first bending portion extending from a first side of the front portion, a second bending portion extending from a second side of the front portion, and a corner portion disposed between the first bending portion and the second bending portion, the display panel comprising a plurality of first pixels disposed in the front portion and a plurality of second pixels disposed in the corner portion,
wherein the display panel comprises:
a substrate;
a first dam disposed on the substrate and surrounding the plurality of first pixels;
a second dam disposed on the substrate and surrounding the plurality of second pixels; and
an organic encapsulation layer comprising a first organic layer disposed on the plurality of first pixels and covering the plurality of first pixels, and a second organic layer disposed on the plurality of second pixels and covering the plurality of second pixels,
wherein the substrate comprises a plurality of cutout patterns disposed in the corner portion and at least some thereof being separated from each other,
the plurality of second pixels and the second dam are disposed in each of the cutout patterns, and
the first organic layer overlaps the first dam and the second dam.

14. The display device of claim 13 , wherein the first organic layer covers an entire area of the first dam, and fills an area between the first dam and the second dam.

15. The display device of claim 14 , wherein a thickness of the first organic layer is in a range of about 7 μm to about 9 μm, and a thickness of the second organic layer is in a range of about 3 μm to about 5 μm.

16. The display device of claim 13 , wherein a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

17. The display device of claim 16 , wherein the first dam comprises a plurality of first unit patterns and a plurality of second unit patterns, and wherein:
the plurality of first unit patterns are repeatedly arranged, and
the plurality of second unit patterns are repeatedly arranged.

18. The display device of claim 17 , further comprising a connection dam disposed on the substrate and connecting the second dam respectively disposed in the plurality of cutout patterns.

19. A display device, comprising:
a substrate having a base portion and a plurality of cutout patterns protruding from the base portion;
a plurality of first pixels disposed on the base portion;
a plurality of second pixels disposed in each of the cutout patterns;
a first dam disposed on the base portion and surrounding the plurality of first pixels; and
a second dam disposed in each of the plurality of cutout patterns and surrounding the plurality of second pixels,
wherein a height of an upper surface of the first dam is higher than a height of an upper surface of the second dam, based on one surface of the substrate.

20. The display device of claim 19 , further comprising an organic encapsulation layer comprising:
a first organic layer disposed on the plurality of first pixels and covering the plurality of first pixels, and
a second organic layer disposed on the plurality of second pixels and covering the plurality of second pixels,
wherein the first organic layer overlaps the first dam and the second dam.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Hye Min
• Lee Hyoung Sub
• Hyun Jin Ho
• Sung Woo Yong

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/121 Primary

  characterised by the geometry or disposition of pixel elements · CPC title

• H10K50/8426 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/12 Primary

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/8731

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