Display device

Patent metadata

Field	Value
Publication number	US-10854845-B2
Application number	US-201916701795-A
Country	US
Kind code	B2
Filing date	Dec 3, 2019
Priority date	Jul 26, 2016
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A display device may include a substrate having a first pixel area, a first electrode on the substrate; a passivation layer between the substrate and the first electrode, a second electrode on the first electrode, and an organic emission layer between the first electrode and the second electrode. The first pixel area may include an emission area and a non-emission area surrounded by the emission area.

First claim

What is claimed is:

1. A display device, comprising:
a substrate having a first pixel area, a second pixel area, and a third pixel area that each emit a different color from each other with each pixel area including:
a first electrode on the substrate, including an opening that is surrounded by the first electrode;
a passivation layer between the substrate and the first electrode;
a second electrode on the first electrode; and
an organic emission layer between the first electrode and the second electrode.

2. The display device as claimed in claim 1 , wherein:
each of the first pixel area, the second pixel area, and the third pixel area includes an emission area and a non-emission area surrounded by the emission area,
the first electrode and the organic emission layer are in the emission area, and
the opening is in the non-emission area.

3. The display device as claimed in claim 2 , wherein the first pixel area, the second pixel area, the third pixel area, and the non-emission areas are substantially quadrangular.

4. The display device as claimed in claim 2 , wherein the non-emission area of at least one of the first pixel area, the second pixel area, and the third pixel area has a cross shape in a plan view.

5. The display device as claimed in claim 2 , wherein:
the first pixel area displays a blue color, the second pixel area displays a green color, and the third pixel area displays a red color,
the first pixel area is larger than the second pixel area, and
the second pixel area is larger than the third pixel area.

6. The display device as claimed in claim 5 , wherein:
the non-emission area of the first pixel area has a cross shape in a plan view,
the non-emission area of the second pixel area has a quadrangular shape in a plan view, and
the non-emission area of the third pixel area has a quadrangular shape in a plan view.

7. The display device as claimed in claim 2 , wherein a portion of the emission area disposed at one side of the non-emission area and a portion of the emission area disposed at an opposite side of the non-emission area are substantially symmetrical.

8. The display device as claimed in claim 2 , wherein:
the substrate further includes a transmissive area adjacent to the first pixel area, the second pixel area, and the third pixel area,
the second pixel area is between the first pixel area and the third pixel area, and
a first length from an upper edge of the first pixel area to a lower edge of the third pixel area is longer than a second length from an upper edge to a lower edge of the transmissive area.

9. The display device as claimed in claim 2 , wherein each of the first pixel area, the second pixel area, and the third pixel area further comprises:
a buried pattern in the non-emission area; and
a pixel defining layer that surrounds an edge of the first pixel area, the second pixel area, and the third pixel area, wherein the buried pattern overlaps the opening and an edge of the first electrode, wherein
a first height from the substrate to a top surface of the buried pattern is lower than a second height from the substrate to a top surface of the pixel defining layer.

10. The display device as claimed in claim 9 , wherein a width of the buried pattern is larger than a width of the opening.

11. The display device as claimed in claim 1 , wherein the first electrode is a unitary electrically-conductive body.

12. The display device as claimed in claim 11 , wherein the opening of at least one pixel area is completely enclosed by its respective first electrode in plan view.

13. The display device as claimed in claim 11 , wherein the opening of each pixel area is completely enclosed by its respective first electrode in plan view.

14. A display device, comprising:
a substrate having a first pixel area, a second pixel area, and a third pixel area that each emit a different color from each other with each pixel area including:
a first electrode on the substrate that includes multiple unitary electrically-conductive bodies that are in direct electrical contact with one another and an opening that is surrounded by the multiple unitary electrically-conductive bodies;
a passivation layer between the substrate and the first electrode;
a second electrode on the first electrode; and
an organic emission layer between the first electrode and the second electrode.

15. The display device as claimed in claim 14 , wherein the multiple unitary electrically-conductive bodies are in direct electrical contact with a common transistor drain electrode through different contact holes.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Won Se
• Kwak Won Kyu
• Kim Dong Wook
• Shin Ae
• Oh Sang Hun
• Yim Jang Kyu
• Choi Jun Ho

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K59/221 Primary

  Static displays, e.g. displaying permanent logos · CPC title

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/352

  the areas of the RGB subpixels being different · CPC title