Display apparatus

Patent metadata

Field	Value
Publication number	US-12193256-B2
Application number	US-202117558574-A
Country	US
Kind code	B2
Filing date	Dec 21, 2021
Priority date	Dec 30, 2020
Publication date	Jan 7, 2025
Grant date	Jan 7, 2025

Abstract

A disclosed display apparatus may include a first electrode on a substrate, a light emitting layer on the first electrode, a second electrode on the light emitting layer, and an encapsulation layer covering the second electrode. The encapsulation layer may include a plurality of metal patterns spaced apart from one another.

First claim

What is claimed is:

1. A display apparatus, comprising:
a first electrode on a substrate;
a light emitting layer on the first electrode;
a second electrode on the light emitting layer; and
an encapsulation layer covering the second electrode, the encapsulation layer including a plurality of metal patterns spaced apart from one another,
wherein the encapsulation layer further includes a first organic layer and a second organic layer overlapping each other,
wherein the metal patterns are disposed between the first organic layer and the second organic layer to be disposed within the encapsulation layer,
wherein the first organic layer includes a plurality of protrusion portions spaced apart from one another,
wherein a second organic layer includes a flat surface facing away from the first organic layer, and
wherein each of the metal patterns is provided on a sidewall of a corresponding one of the protrusion portions.

2. The display apparatus of claim 1 , wherein the encapsulation layer comprises:
a first encapsulation layer on the second electrode;
a second encapsulation layer on the first encapsulation layer and including the first organic layer, the second organic layer, and the metal patterns; and
a third encapsulation layer on the second encapsulation layer.

3. The display apparatus of claim 1 , wherein the protrusion portions:
protrude in a vertical direction on a plane of the first organic layer having a thickness,
are arranged in one row at a predetermined interval in a first direction, and
have a rectilinear shape extending in a second direction perpendicular to the first direction.

4. The display apparatus of claim 3 , wherein the predetermined interval is less than or equal to 400 nm.

5. The display apparatus of claim 1 , wherein the metal patterns are thicker toward upper end portions of the protrusion portions than toward lower end portions of the protrusion portions.

6. The display apparatus of claim 1 , wherein a width of each of the protrusion portions decreases from a lower portion thereof to an upper portion thereof.

7. The display apparatus of claim 1 , wherein:
an upper end portion of each of the protrusion portions includes a flat region, and
each of the metal patterns partially covers the upper end portion of the corresponding one of the protrusion portions.

8. The display apparatus of claim 1 , wherein the sidewall of each of the protrusion portions is flat.

9. The display apparatus of claim 1 , wherein each of the metal patterns covers a portion of a left sidewall and a portion of a right sidewall of the corresponding one of the protrusion portions based on a reference line passing through a center of the corresponding one of the protrusion portions in a vertical direction.

10. The display apparatus of claim 1 , wherein a height of each of the protrusion portions is greater than or equal to 50 nm and less than or equal to 200 nm.

11. The display apparatus of claim 1 , wherein the metal patterns are arranged at an interval of 400 nm or smaller.

12. The display apparatus of claim 1 , wherein:
the substrate includes an emission area, a transmission area, and a non-display area;
the first electrode is provided in the emission area;
the light emitting layer and the second electrode are provided in the emission area and the transmission area; and
the encapsulation layer covers the second electrode in the emission area and the transmission area and includes the plurality of metal patterns in the emission area.

13. A display apparatus, comprising:
a substrate including an emission area, a transmission area, and a non-display area;
a first electrode on the substrate in the emission area;
a light emitting layer on the first electrode;
a second electrode on the light emitting layer; and
an encapsulation layer covering the second electrode in the emission area and the transmission area, the encapsulation layer including a plurality of metal patterns spaced apart from one another in the emission area,
wherein the encapsulation layer further includes a first organic layer, and a second organic layer between the first organic layer and the second electrode,
wherein the metal patterns are disposed between the first organic layer and the second organic layer to be disposed within the encapsulation layer,
wherein the first organic layer comprises a plurality of protrusion portions in the emission area and a flat bottom surface in the transmission area,
wherein the protrusion portions are spaced apart from one another, and
wherein each of the metal patterns is on a sidewall of a corresponding one of the protrusion portions.

14. The display apparatus of claim 13 , wherein the protrusion portions:
protrude in a vertical direction on a plane of the first organic layer having a thickness,
are arranged in one row at a predetermined interval in a first direction, and
have a rectilinear shape extending in a second direction perpendicular to the first direction.

15. The display apparatus of claim 13 , wherein:
the metal patterns are thicker toward lower end portions of the protrusion portions than toward upper end portions of the protrusion portions, and
a width of each of the protrusion portions decreases from an upper portion thereof to a lower portion thereof.

16. The display apparatus of claim 13 , wherein:
a lower end portion of each of the protrusion portions includes a flat region, and
each of the metal patterns partially covers the lower end portion of the corresponding one of the protrusion portions.

Assignees

• Lg Display Co Ltd

Inventors

• Park Sangpil
• Kim Jong-Moo
• Ji Seokwon
• Lee Sanghoon

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/8731

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

• H10K50/844 Primary

  Encapsulations · CPC title