Display apparatus and manufacturing method of the same

Patent metadata

Field	Value
Publication number	US-12382807-B2
Application number	US-202217967707-A
Country	US
Kind code	B2
Filing date	Oct 17, 2022
Priority date	Oct 28, 2021
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A display apparatus includes: an auxiliary line comprising a main sub-layer and an upper layer on the main sub-layer; an insulating layer comprising a first opening having a greater width than the auxiliary line, wherein the first opening overlaps the auxiliary line; a first electrode on the insulating layer; an intermediate layer overlapping the first electrode and comprising an emission layer; an auxiliary layer, at least a portion of which overlaps the auxiliary line; and a second electrode on the auxiliary layer, wherein the upper layer of the auxiliary line comprises a tip protruding, in a lateral direction, from a first point, in which a side surface and an upper surface of the main sub-layer meet each other, and being curved upwards from the first point, and the second electrode contacts the side surface of the main sub-layer through the first opening of the insulating layer.

First claim

What is claimed is:

1. A display apparatus comprising:
an auxiliary line comprising a main sub-layer and an upper layer on the main sub-layer;
an insulating layer comprising a first opening having a greater width than the auxiliary line, wherein the first opening overlaps the auxiliary line;
a first electrode on the insulating layer;
an intermediate layer overlapping the first electrode and comprising an emission layer;
an auxiliary layer, at least a portion of which overlaps the auxiliary line; and
a second electrode on the auxiliary layer,
wherein the upper layer of the auxiliary line comprises a tip protruding, in a lateral direction, from a first point, in which a side surface and an upper surface of the main sub-layer meet each other, and being curved upwards from the first point, and
the second electrode contacts the side surface of the main sub-layer through the first opening of the insulating layer.

2. The display apparatus of claim 1 , wherein the auxiliary layer comprises a transparent conductive material.

3. The display apparatus of claim 1 , wherein the auxiliary layer comprises:
a first portion on the upper layer of the auxiliary line; and
a second portion separated from the first portion by the tip.

4. The display apparatus of claim 3 , wherein the second portion of the auxiliary layer contacts the side surface of the main sub-layer.

5. The display apparatus of claim 1 , wherein the second electrode comprises a different material from the auxiliary layer.

6. The display apparatus of claim 1 , wherein the main sub-layer comprises at least one of copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or molybdenum (Mo).

7. The display apparatus of claim 1 , wherein the auxiliary line further comprises a lower layer under the main sub-layer, and
a thickness of the main sub-layer is greater than at least one of thicknesses of the upper layer or the lower layer.

8. The display apparatus of claim 7 , wherein at least one of the upper layer or the lower layer comprises at least one of indium tin oxide (ITO), titanium (Ti), molybdenum (Mo), or tungsten (W).

9. The display apparatus of claim 1 , wherein the intermediate layer overlaps the first electrode and the auxiliary line, and a portion of the intermediate layer is on the auxiliary line while separated, by the tip, from another portion of the intermediate layer around the auxiliary line.

10. The display apparatus of claim 1 , wherein the second electrode overlaps the first electrode and the auxiliary line, and a portion of the second electrode is on the auxiliary line while separated, by the tip, from another portion of the second electrode around the auxiliary line.

11. A display apparatus comprising:
an auxiliary line comprising a main sub-layer and an upper layer on the main sub-layer;
an insulating layer comprising a first opening having a greater width than the auxiliary line, wherein the first opening overlaps the auxiliary line;
a first electrode on the insulating layer;
an intermediate layer overlapping the first electrode and comprising an emission layer; and
a transparent conductive material layer overlapping the intermediate layer and the auxiliary line,
wherein the upper layer of the auxiliary line comprises a tip protruding, in a lateral direction, from a first point, in which a side surface and an upper surface of the main sub-layer meet each other, and curved upwards from the first point.

12. The display apparatus of claim 11 , wherein the transparent conductive material layer comprises:
a first portion on the upper layer of the auxiliary line; and
a second portion separated from the first portion by the tip,
wherein the second portion of the transparent conductive material layer directly contacts the side surface of the main sub-layer of the auxiliary line.

13. The display apparatus of claim 11 , further comprising a second electrode on the transparent conductive material layer.

14. The display apparatus of claim 13 , wherein the second electrode comprises a different material from the transparent conductive material layer.

15. The display apparatus of claim 11 , wherein the auxiliary line further comprises a lower layer under the main sub-layer, and
a thickness of the main sub-layer is greater than at least one of thicknesses of the upper layer or the lower layer.

16. The display apparatus of claim 11 , wherein the transparent conductive material layer comprises at least one of indium tin oxide (ITO), gallium zinc oxide (GZO), or indium zinc oxide (IZO).

17. A manufacturing method of a display apparatus, the manufacturing method comprising:
forming an auxiliary line comprising a main sub-layer and an upper layer on the main sub-layer;
forming an insulating layer comprising a first opening having a greater width than the auxiliary line, wherein the first opening overlaps the auxiliary line;
forming a first electrode on the insulating layer;
forming an intermediate layer overlapping the first electrode and comprising an emission layer;
forming a transparent conductive material layer overlapping the intermediate layer and the auxiliary line; and
forming a second electrode on the transparent conductive material layer,
wherein, in the forming of the second electrode on the transparent conductive material layer, the second electrode contacts a side surface of the main sub-layer of the auxiliary line, and the surface of the main sub-layer is located under a tip of the upper layer, the tip protruding, in a lateral direction, from a first point, in which the side surface and an upper surface of the main sub-layer meet each other, and curved upwards from the first point.

18. The manufacturing method of claim 17 , wherein the transparent conductive material layer is formed at a pressure equal to or greater than 7 mTorr.

19. The manufacturing method of claim 17 , wherein the second electrode comprises a different material from the transparent conductive material layer.

20. The manufacturing method of claim 17 , wherein the transparent conductive material layer is formed through sputtering.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Heemin
• Lee Joongu
• Gwark Hyejin
• Kim Arong
• Kim Jaeik
• Park Jungsun
• Lee Yeonhwa
• Hwang Kyuhwan

Classifications

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K71/00

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

• H10K59/1315 Primary

  comprising structures specially adapted for lowering the resistance · CPC title