Display apparatus comprising a first auxiliary wiring layer having a first tip protruding from a first side surface of an organic insulating layer

Patent metadata

Field	Value
Publication number	US-11605686-B2
Application number	US-202117202810-A
Country	US
Kind code	B2
Filing date	Mar 16, 2021
Priority date	Jul 7, 2020
Publication date	Mar 14, 2023
Grant date	Mar 14, 2023

Abstract

A display apparatus includes a substrate including a base portion and a plurality of connection portions extending from the base portion in different directions, a pixel circuit arranged on the base portion and including a thin-film transistor and a storage capacitor, an organic insulating layer on the pixel circuit, a pixel electrode arranged on the organic insulating layer and electrically connected to the pixel circuit, a first auxiliary wiring layer arranged on the organic insulating layer, an opposite electrode overlapping the pixel electrode, and an emission layer between the pixel electrode and the opposite electrode. The organic insulating layer includes a first recess portion, the first auxiliary wiring layer has a first tip protruding from a side surface of the organic insulating layer in a width direction of the first auxiliary wiring layer, and the side surface defines the first recess portion.

First claim

What is claimed is:

1. A display apparatus comprising:
a substrate including a base portion and a plurality of connection portions, the plurality of connection portions extending from the base portion in different directions from each other;
a pixel circuit arranged on the base portion and including a thin-film transistor and a storage capacitor;
an organic insulating layer on the pixel circuit;
a pixel electrode arranged on the organic insulating layer and electrically connected to the pixel circuit;
a first auxiliary wiring layer arranged on the organic insulating layer;
an opposite electrode overlapping the pixel electrode in a plan view; and
an emission layer between the pixel electrode and the opposite electrode,
wherein the organic insulating layer defines a first recess portion, the first auxiliary wiring layer has a first tip protruding from a first side surface of the organic insulating layer, in a width direction of the first auxiliary wiring layer and the first side surface defines the first recess portion.

2. The display apparatus of claim 1 , wherein the first auxiliary wiring layer includes a same material as the pixel electrode.

3. The display apparatus of claim 1 , wherein the first auxiliary wiring layer has a closed-loop shape to surround an entirety of the pixel electrode in the plan view.

4. The display apparatus of claim 1 , wherein the opposite electrode contacts a portion of the first auxiliary wiring layer.

5. The display apparatus of claim 4 , further comprising a pixel-defining layer arranged on the pixel electrode and defining an opening overlapping the pixel electrode in the plan view,
wherein the pixel-defining layer covers a part of the first auxiliary wiring layer such that the portion of the first auxiliary wiring layer is exposed.

6. The display apparatus of claim 4 , wherein the opposite electrode contacts the portion of the first auxiliary wiring layer above the first tip.

7. The display apparatus of claim 1 , further comprising a common power line arranged on the substrate,
wherein the first auxiliary wiring layer is electrically connected to the common power line.

8. The display apparatus of claim 7 , wherein the common power line includes:
a first portion located on the base portion; and
a second portion extending from the first portion toward at least one of the plurality of connection portions.

9. The display apparatus of claim 1 , wherein the opposite electrode includes portions separated by the first tip.

10. The display apparatus of claim 1 , further comprising a functional layer between the pixel electrode and the opposite electrode,
wherein the functional layer includes portions separated by the first tip.

11. The display apparatus of claim 1 , further comprising an inorganic insulating layer arranged between the organic insulating layer and the pixel electrode.

12. The display apparatus of claim 11 , wherein the inorganic insulating layer includes a portion protruding from the first side surface of the organic insulating layer in the width direction of the first auxiliary wiring layer, and the portion of the inorganic insulating layer is arranged below the first tip.

13. The display apparatus of claim 1 , further comprising an encapsulation layer covering the opposite electrode and including at least one inorganic encapsulation layer and at least one organic encapsulation layer.

14. The display apparatus of claim 1 , further comprising a second auxiliary wiring layer apart from the first auxiliary wiring layer.

15. The display apparatus of claim 14 , wherein the second auxiliary wiring layer includes a same material as the pixel electrode and the first auxiliary wiring layer.

16. The display apparatus of claim 14 , wherein the organic insulating layer further defines a second recess portion recessed in an opposite direction to the first recess portion.

17. The display apparatus of claim 16 , wherein the second auxiliary wiring layer includes a second tip facing the first tip of the first auxiliary wiring layer and protruding from a second side surface of the organic insulating layer, and the second side surface defines the second recess portion.

18. The display apparatus of claim 14 , further comprising a spacer arranged above the second auxiliary wiring layer and surrounding an entirety of the base portion in the plan view.

19. The display apparatus of claim 14 , further comprising an encapsulation layer covering the opposite electrode and including at least one inorganic encapsulation layer and at least one organic encapsulation layer.

20. The display apparatus of claim 19 , wherein a portion of the at least one organic encapsulation layer is arranged in the first recess portion.

Assignees

• Samsung Display Co Ltd

Inventors

• Won Byeonghee
• Park Junhyeong
• Shin Jaemin

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/80522

  combined with auxiliary electrodes · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10D86/481

  integrated with passive devices, e.g. auxiliary capacitors · CPC title

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title