Display device

Patent metadata

Field	Value
Publication number	US-10930867-B2
Application number	US-202016815117-A
Country	US
Kind code	B2
Filing date	Mar 11, 2020
Priority date	Mar 27, 2019
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

According to an embodiment of the present invention, a display device includes: a substrate including a through-hole, a peripheral area surrounding the through-hole, a wiring area surrounding the peripheral area, and a display area surrounding the wiring area; a gate insulating layer disposed on the substrate; a gate wire disposed in the wiring area and on the gate insulating layer; an interlayer insulating layer disposed on the gate wire; a data wire disposed in the wiring area and on the interlayer insulating layer; a middle insulating layer disposed on the data wire; and a first main insulating dam disposed in the wiring area and on the middle insulating layer, wherein the first main insulating dam includes an organic material, and wherein a width of a lower surface of the first main insulating dam is narrower than a width of an upper surface of the first main insulating dam.

First claim

What is claimed is:

1. A display device comprising:
a substrate including a through-hole, a peripheral area surrounding the through-hole, a wiring area surrounding the peripheral area, and a display area surrounding the wiring area;
a gate insulating layer disposed on the substrate;
a gate wire disposed in the wiring area and on the gate insulating layer;
an interlayer insulating layer disposed on the gate wire;
a data wire disposed in the wiring area and on the interlayer insulating layer;
a middle insulating layer disposed on the data wire; and
a first main insulating dam disposed in the wiring area and on the middle insulating layer,
wherein the first main insulating dam includes an organic material, and wherein a width of a lower surface of the first main insulating dam is narrower than a width of an upper surface of the first main insulating dam.

2. The display device of claim 1 , further comprising:
an emission layer disposed on the substrate; and
a cathode disposed on the emission layer,
wherein the emission layer and the cathode are disposed in the peripheral area and the wiring area, and
the emission layer and the cathode include a disconnection point based on the first main insulating dam.

3. The display device of claim 2 , further comprising:
an encapsulation layer disposed on the cathode,
wherein the encapsulation layer includes an inorganic encapsulation layer and an organic encapsulation layer.

4. The display device of claim 3 , wherein
the middle insulating layer and the inorganic encapsulation layer are in direct contact at the disconnection point.

5. The display device of claim 1 , further comprising:
a first sub-insulating dams disposed in the peripheral area and disposed on the middle insulating layer,
wherein the first sub-insulating dam includes a plurality of organic layers.

6. The display device of claim 5 , wherein
the plurality of organic layers include:
a planarization layer disposed on the middle insulating layer;
a partition disposed on the planarization layer; and
a spacer disposed on the partition.

7. The display device of claim 6 , further comprising
a second sub-insulating dams disposed in the wiring area and on the middle insulating layer,
wherein the second sub-insulating dams includes the plurality of organic layers.

8. The display device of claim 6 , wherein
the first main insulating dam is disposed on a same layer as one of the planarization layer, the partition, or the spacer.

9. The display device of claim 6 , further comprising
at least one second main insulating dam disposed in the peripheral area.

10. The display device of claim 1 , wherein
the through-hole is formed to penetrate the substrate, the gate insulating layer, the interlayer insulating layer, and the middle insulating layer.

11. A display device comprising:
a substrate including a through-hole, a first non-display area surrounding the through-hole, and a display area surrounding the first non-display area;
a gate insulating layer disposed on the substrate;
a gate wire disposed in the first non-display area and on the gate insulating layer;
an interlayer insulating layer disposed on the gate wire;
a data wire disposed in the first non-display area and on the interlayer insulating layer;
a middle insulating layer disposed on the data wire;
an emission layer disposed on the substrate; and
an encapsulation layer disposed on the emission layer and on the substrate,
wherein the encapsulation layer includes an inorganic encapsulation layer and an organic encapsulation layer,
the emission layer includes an opening formed in the first non-display area, and
the middle insulating layer is in direct contact with the inorganic encapsulation layer in the opening.

12. The display device of claim 11 , further comprising
a cathode disposed between the emission layer and the inorganic encapsulation layer,
wherein the cathode includes an opening formed in the first non-display area.

13. The display device of claim 12 , wherein
the first non-display area includes a peripheral area surrounding the through-hole and a wiring area surrounding the peripheral area, and
wherein the gate wire and the data wire are disposed in the wiring area.

14. The display device of claim 13 , further comprising
a sub-insulating dam disposed in the peripheral area and on the middle insulating layer.

15. The display device of claim 14 , wherein
the sub-insulating dam includes a plurality of organic layers, and
the plurality of organic layers include:
a planarization layer disposed on the middle insulating layer;
a partition disposed on the planarization layer; and
a spacer disposed on the partition.

16. A display device comprising:
a substrate including a through-hole, a peripheral area surrounding the through-hole, and a wiring area surrounding the peripheral area;
a gate insulating layer disposed on the substrate;
a gate wire disposed in the wiring area and on the gate insulating layer;
an interlayer insulating layer disposed on the gate wire;
a data wire disposed in the wiring area and on the interlayer insulating layer;
a middle insulating layer disposed on the data wire;
an organic layer disposed on the middle insulating layer; and
a first reverse insulating dam disposed in the wiring area and on the organic layer,
wherein the first reverse insulating dam has a tapered shape.

17. The display device of claim 16 , further comprising:
a second reverse insulating dam disposed on the middle insulating layer;
an emission layer disposed on the substrate; and
a cathode disposed on the emission layer,
wherein the emission layer and the cathode include a first disconnection point based on the first reverse insulating dams.

18. The display device of claim 17 , further comprising
an encapsulation layer disposed on the cathode,
wherein the encapsulation layer includes an inorganic encapsulation layer and an organic encapsulation layer.

19. The display device of claim 18 , wherein
the middle insulating layer and the inorganic encapsulation layer are in direct contact at the first disconnection point.

20. The display device of claim 16 , further comprising
a second reverse insulating dams disposed in the peripheral area.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Tae Woo
• Cho Seung-Hwan
• Choi Jong Hyun
• Lee Sang Hoon

Classifications

• H10K71/00

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

• H10K59/805

  Electrodes · CPC title

• H10K59/8722

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

• H10K59/8723

  Vertical spacers, e.g. arranged between the sealing arrangement and the OLED · CPC title

• H10K59/8731

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