Display apparatus with a reduced peripheral area

Patent metadata

Field	Value
Publication number	US-10797121-B2
Application number	US-201816059553-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Jan 2, 2018
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

A display apparatus includes a display area in which a plurality of pixels are disposed to display an image and a peripheral area which is a non-display area. The display apparatus includes a first power line which is disposed in the peripheral area and provides a first voltage to the plurality of pixels, and a second power line which is disposed in the peripheral area and provides a second voltage different from the first voltage to the plurality of pixels. At least a portion of the first power line overlaps the second power line in the peripheral area.

First claim

What is claimed is:

1. A display apparatus comprising a display area in which a plurality of pixels are disposed to display an image and a peripheral area which is a non-display area, the display apparatus comprising:
a first power line disposed in the peripheral area and configured to provide a first voltage to the plurality of pixels; and
a second power line disposed in the peripheral area and configured to provide a second voltage different from the first voltage to the plurality of pixels, and
wherein at least a portion of the first power line overlaps the second power line in the peripheral area,
the second power line comprises a second_first portion and a second_second portion,
the second_first portion and the second_second portion of the second power line are formed from different layers,
an insulation layer is disposed between the second_first portion and the second_second portion of the second power line, and
the second_first portion and the second_second portion contact each other through a contact hole formed through the insulation layer.

2. The display apparatus of claim 1 , wherein
the second_second portion of the second power line overlaps the first power line, and
the second_first portion of the second power line and a portion of the first power line are formed from a same layer.

3. The display apparatus of claim 2 , wherein the first voltage is a driving voltage, and the second voltage is a common voltage.

4. The display apparatus of claim 3 , wherein the insulation layer comprises an organic insulation material.

5. The display apparatus of claim 4 , wherein the first power line comprises a first_first portion and a first_second portion,
the first_first portion and the second_first portion of the second power line are formed from a same layer, and
the first_second portion of the first power line and the second_second portion of the second power line are formed from a same layer.

6. The display apparatus of claim 5 , wherein the peripheral area comprises a first organic film area, a second organic film area spaced apart from the first organic film area and contacting the display area, and an non-organic film area between the first organic film area and the second organic film area.

7. The display apparatus of claim 6 , further comprising a base substrate on which the first power line, the second power line, and the plurality of pixels are formed,
wherein the first organic film area comprises a bending area, and the base substrate is configured to be bent at the bending area.

8. The display apparatus of claim 7 , further comprising an inorganic insulation layer disposed between the insulation layer and the first_first portion of the first power line.

9. The display apparatus of claim 2 , wherein the second voltage is a driving voltage, and the first voltage is a common voltage.

10. The display apparatus of claim 9 , further comprises an organic insulation layer disposed between the second_second portion of the second power line and the first power line, and comprising an organic insulation material.

11. The display apparatus of claim 10 , further comprising:
a base substrate on which the first power line, the second power line, and the plurality of pixels are formed,
wherein an inorganic insulation layer or a first organic insulation layer is disposed between the second_first portion of the second power line and the base substrate.

12. The display apparatus of claim 11 , wherein the peripheral area comprises a first organic film area, a second organic film area which is spaced apart from the first organic film area and contacts the display area, and a non-organic film area between the first organic film area and the second organic film area, and
between the base substrate and the first_first portion of the first power line or the second_first portion of the second power line, the inorganic insulation layer is formed in the second organic film area and the non-organic film area, and the first organic insulation layer is formed in the first organic film area.

13. The display apparatus of claim 12 , further comprising:
a second organic insulation layer between the second_first portion and the second_second portion of the second power line.

14. The display apparatus of claim 13 , further comprising:
an inorganic insulation film between the second_first portion of the second power line and the second organic insulation layer.

15. The display apparatus of claim 14 , wherein the inorganic insulation film is disposed in the non-organic film area, and the second organic insulation layer is disposed in the second organic film area.

16. The display apparatus of claim 1 , wherein each of the plurality of pixels comprises a thin film transistor, a pixel electrode electrically connected to the thin film transistor, an opposite electrode facing the pixel electrode, and an emission layer between the pixel electrode and the opposite electrode.

17. A display apparatus comprising a display area in which a plurality of pixels are disposed to display an image and a peripheral area which is a non-display area, the peripheral area comprising a first organic film area, a second organic film area spaced apart from the first organic film area adjacent to the display area, and a non-organic film area between the first organic film area and the second organic film area, the display apparatus comprising:
a base substrate;
a first power line formed along the first organic film area, the non-organic film area, and the second organic film area on the base substrate;
a second power line comprising a second_first portion which is spaced apart from the first power line on the base substrate, and formed along the first organic film area, the non-organic film area, and the second organic film area, and a second_second portion which is vertically spaced apart from and overlaps the first power line in the second organic film area;
an organic insulation layer formed between the second_first portion and the second_second portion of the second power line in the second organic film area, and not formed in the non-organic film area; and
an inorganic insulation film disposed in the second organic film area, the non-organic film area, and the first organic film area, and disposed on the first power line and the second_first portion of the second power line to cover at least a portion of the first power line and the second_first portion of the second power line.

18. The display apparatus of claim 17 , wherein the second_first portion and the second_second portion of the second power line are electrically connected to each other through a contact hole formed through the inorganic insulation film and the organic insulation layer in the second organic film area.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Dong-Hyun
• Kim Deukjong
• Lee Jaehak

Classifications

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/123

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

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10K59/1213 Primary

  the pixel elements being TFTs · CPC title

• Y02E10/549

  Organic PV cells · CPC title