Display apparatus

Patent metadata

Field	Value
Publication number	US-12082463-B2
Application number	US-202217957277-A
Country	US
Kind code	B2
Filing date	Sep 30, 2022
Priority date	Oct 30, 2019
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

A display apparatus includes a first power supply voltage line in a non-display area and including a first conductive layer, a first organic layer on the first conductive layer, and a second conductive layer on the first organic layer, a second power supply voltage line in the non-display area and including a third conductive layer spaced apart from the first conductive layer, and a fourth conductive layer on the first organic layer which is on the third conductive layer, a first dam portion adjacent to the first power supply voltage line, a second dam portion adjacent to the first dam portion, and a third dam portion between the first power supply voltage line and the first dam portion. The fourth conductive layer includes an opening exposing an upper surface of the first organic layer between the first power supply voltage line and the second dam portion.

First claim

What is claimed is:

1. A display apparatus comprising:
a substrate;
a display area comprising a plurality of pixels disposed on the substrate;
a non-display area adjacent to the display area;
a first power supply voltage line disposed in the non-display area and comprising:
a first conductive layer; and
a second conductive laver,

a first organic layer disposed on and directly above the first conductive layer, wherein the second conductive layer is disposed on and directly above the first organic layer;
a second power supply voltage line electrically separated from the first power supply voltage line, the second power supply voltage line disposed in the non-display area, the second power supply voltage line and the second conductive layer including a same material;
a first dam portion surrounding the display area and disposed adjacent to the first power supply voltage line;
a second dam portion disposed adjacent to the first dam portion; and
a third dam portion disposed between the first power supply voltage line and the first dam portion, wherein
the first organic layer continuously extends from the first power supply voltage line to directly under the third dam, and
the first organic layer has a substantially concave-convex pattern comprising at least one opening between the first power supply voltage line and the second dam portion.

2. The display apparatus of claim 1 , wherein the second power supply voltage line is disposed on the first organic layer along the substantially concave-convex pattern.

3. The display apparatus of claim 2 , wherein the second power supply voltage line is continuously connected between the third dam portion and the second dam portion in an extending direction of the third dam portion and the second dam portion.

4. The display apparatus of claim 1 , wherein the at least one opening comprises:
a first opening between the third dam portion and the first dam portion; and
a second opening between the first dam portion and the second dam portion.

5. The display apparatus of claim 4 , wherein the second dam portion overlaps an end of the second power supply voltage line at a predetermined distance from the second opening.

6. The display apparatus of claim 1 , wherein
the pixel comprises:
a first electrode;
an emission layer disposed on the first electrode; and
a second electrode disposed on the emission layer,

the second electrode is commonly disposed in the plurality of pixels, and
the second electrode extends toward the non-display area to overlap a part of the third dam portion.

7. The display apparatus of claim 1 , further comprising:
a second organic layer disposed on the first organic layer; and
a pixel defining layer disposed on the second organic layer, wherein
the first dam portion comprises:
a first layer including a part of the second organic layer; and
a second layer including a part of the pixel defining layer,

the second dam portion comprises:
a first layer including a part of the second organic layer; and
a second layer including a part of the pixel defining layer, and

the third dam portion includes:
a first layer including a part of the second organic layer; and
a second layer including a part of the pixel defining layer.

8. The display apparatus of claim 7 , further comprising a spacer disposed on the pixel defining layer, wherein
the second dam portion comprises a third layer on the second layer including the part of the pixel defining layer, and
the third layer and the spacer include a same material.

9. The display apparatus of claim 8 , wherein a height of the second dam portion is greater than a height of the first dam portion and a height of the third dam portion.

10. The display apparatus of claim 1 , wherein the third dam portion, the first dam portion, and the second dam portion overlap the second power supply voltage line.

11. The display apparatus of claim 1 , further comprising a thin-film encapsulation layer comprising:
a first inorganic encapsulation layer overlapping the display area;
an organic encapsulation layer on the first inorganic encapsulation layer; and
a second inorganic encapsulation layer on the organic encapsulation layer,
wherein the thin-film encapsulation layer overlaps the third dam portion and the first dam portion.

12. The display apparatus of claim 11 , wherein the first inorganic encapsulation layer and the second inorganic encapsulation layer are in direct contact with an edge of the second dam portion.

13. The display apparatus of claim 11 , wherein the first inorganic encapsulation layer is in direct contact with the second power supply voltage line in the at least one opening.

14. The display apparatus of claim 1 , wherein the first conductive layer is electrically connected to the second conductive layer through a first contact hole disposed in the first organic layer.

15. The display apparatus of claim 1 , wherein
the first conductive layer is disposed on and directly above an inorganic insulating layer,
the first conductive layer directly contacts the inorganic insulating layer in the non-display area, and
the second power supply voltage line directly contacts the inorganic insulating layer in the non-display area.

16. A display apparatus comprising:
a substrate;
a display area comprising a plurality of pixels disposed on the substrate;
a non-display area adjacent to the display area;
a first power supply voltage line disposed in the non-display area and comprising:
a first conductive layer; and
a second conductive layer;

a first organic layer disposed on and directly above the first conductive layer, wherein the second conductive layer is disposed on and directly above the first organic layer;
a second power supply voltage line electrically separated from the first power supply voltage line, the second power supply voltage line disposed in the non-display area;
a first dam portion surrounding the display area and disposed adjacent to the first power supply voltage line;
a second dam portion disposed adjacent to the first dam portion; and
a third dam portion disposed between the first power supply voltage line and the first dam portion, wherein
the first organic layer continuously extends from the first power supply voltage line to directly under the third dam,
the first organic layer has at least one opening between the first power supply voltage line and the second dam portion, and
the second power supply voltage line covers an inner surface of the at least one opening and is continuously connected between the third dam portion and the second dam portion.

17. The display apparatus of claim 16 , wherein the at least one opening comprises:
a first opening between the third dam portion and the first dam portion; and
a second opening between the first dam portion and the second dam portion.

18. The display apparatus of claim 16 , wherein the second dam portion overlaps an end of the second power supply voltage line at a predetermined distance from the second opening.

19. The display apparatus of claim 16 , further comprising a thin-film encapsulation layer comprising:
a first inorganic encapsulation layer overlapping the display area;
an organic encapsulation layer on the first inorganic encapsulation layer; and
a second inorganic encapsulation layer on the organic encapsulation layer,
wherein the thin-film encapsulation layer overlaps the third dam portion and the first dam portion.

20. The display apparatus of claim 19 , wherei

Assignees

• Samsung Display Co Ltd

Inventors

• Bang Kiho
• Kim Eunhye
• Park Youngwoo
• Park Yonghwan
• Ahn Saebom
• Lee Seongjun
• Jun Sanghyun

Classifications

• H10K59/1315

  comprising structures specially adapted for lowering the resistance · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/123

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/8731

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