Organic light emitting diode display device and organic light emitting diode thereof

Patent metadata

Field	Value
Publication number	US-10468468-B2
Application number	US-201815969504-A
Country	US
Kind code	B2
Filing date	May 2, 2018
Priority date	Sep 23, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

There is provided an organic light emitting diode display device. The organic light emitting diode display device includes a substrate divided into an emission area and a non-emission area, an overcoating layer disposed on the substrate and including a plurality of micro lenses, a plurality of first electrode patterns disposed on the overcoating layer and spaced away from each other in the emission area, an organic emission layer disposed on the plurality of first electrodes, and a second electrode disposed on the organic emission layer.

First claim

What is claimed is:

1. An organic light emitting diode, comprising:
a first electrode pattern having at least one hole;
an overcoating layer disposed below the first electrode pattern and including a plurality of micro lenses including a recess overlapping with the at least one hole;
an organic emission layer disposed on the first electrode pattern; and
a second electrode disposed on the organic emission layer, the organic emission layer being disposed between the first electrode pattern and the second electrode,
wherein the organic emission layer is disposed in contact with the overcoating layer in an area corresponding to the recess.

2. The organic light emitting diode according to claim 1 , wherein:
each of the plurality of micro lenses further includes a protrusion and a slope,
a thickness of the organic emission layer in an area corresponding to the slope, and perpendicular to the slope, is smaller than the thickness of the organic emission layer in an area corresponding to the protrusion and the recess.

3. The organic light emitting diode according to claim 2 , wherein the first electrode pattern is disposed in an area corresponding to the protrusion and the slope.

4. The organic light emitting diode according to claim 1 , wherein the first electrode pattern includes at least two convex portions spaced away from each other by the at least one hole.

5. The organic light emitting diode according to claim 1 , further comprising a bank pattern exposing the at least one hole of the first electrode pattern.

6. The organic light emitting diode according to claim 1 , wherein the at least one hole penetrates through the first electrode pattern.

7. The organic light emitting diode according to claim 1 , wherein the first electrode pattern does not cover the recess of each of the plurality of micro lenses.

8. An organic light emitting diode, comprising:
a first electrode pattern having at least one hole;
an overcoating layer disposed below the first electrode pattern and including a plurality of micro lenses including a recess overlapping with the at least one hole;
an organic emission layer disposed on the first electrode pattern; and
a second electrode disposed on the organic emission layer, the organic emission layer being disposed between the first electrode pattern and the second electrode,
wherein the organic emission layer is disposed in contact with the overcoating layer through the at least one hole.

9. The organic light emitting diode according to claim 8 , wherein the first electrode pattern does not cover the recess of each of the plurality of micro lenses.

10. An organic light emitting diode display device comprising:
a substrate including a pixel area having a non-emission area and an emission area;
an overcoating layer disposed on the substrate;
a first electrode pattern disposed at the emission area on the overcoating layer and including at least one opening overlapping with the non-emission area;
an organic emission layer disposed on the first electrode pattern, the organic emission layer being in the at least one opening; and
a second electrode disposed on the organic emission layer, the organic emission layer being disposed between the first electrode pattern and the second electrode, and
wherein the organic emission layer is disposed in contact with the overcoating layer through the at least one opening.

11. The organic light emitting diode display device to claim 10 , wherein the overcoating layer includes a plurality of micro lenses including a protrusion overlapping with the emission area and a recess overlapping with the non-emission area.

12. The organic light emitting diode display device to claim 11 , wherein the first electrode pattern is disposed in an area corresponding to the protrusion.

13. The organic light emitting diode display device to claim 11 , wherein each of the plurality of micro lenses further includes a slope between the protrusion and the recess,
wherein a thickness of the organic emission layer in an area corresponding to the slope, and perpendicular to the slope, is smaller than the thickness of the organic emission layer in an area corresponding to the protrusion and the recess.

14. The organic light emitting diode display device to claim 13 , wherein the first electrode pattern is disposed in an area corresponding to the protrusion and the slope.

15. The organic light emitting diode display device to claim 13 , wherein the organic emission layer is disposed in contact with the overcoating layer in an area corresponding to the recess and the slope.

16. The organic light emitting diode display device to claim 10 , wherein the first electrode pattern includes at least two convex portions spaced away from each other by the at least one opening.

17. The organic light emitting diode display device to claim 10 , further comprising a thin-film transistor disposed on the substrate, and connected to the first electrode pattern,
wherein the overcoating layer covers the thin-film transistor.

18. The organic light emitting diode according to claim 10 , further comprising a bank pattern exposing the at least one opening of the first electrode pattern and defining the pixel area.

Assignees

• Lg Display Co Ltd

Inventors

• Joung Seungryong
• Han Changwook
• Lee Kangju
• Choi Hongseok
• Park Hansun
• Ahn Soyeon
• Jeon Seongsu
• Koo Wonhoe
• Park Jeaho

Classifications

• H01L51/5262

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L27/3244 Primary

  Electricity · mapped topic

• H01L51/5225

  Electricity · mapped topic

• H01L51/5209

  Electricity · mapped topic