Organic light emitting diode display device

Patent metadata

Field	Value
Publication number	US-12356796-B2
Application number	US-202418610551-A
Country	US
Kind code	B2
Filing date	Mar 20, 2024
Priority date	Oct 30, 2015
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

Disclosed is an organic light emitting diode display device. The disclosed organic light emitting diode display device includes an overcoat layer disposed on a substrate that is divided into an emissive area and a non-emissive area, and has multiple micro lenses in the emissive area and at least one depression in the non-emissive area. The organic light emitting diode display device further includes: a first electrode disposed on the overcoat layer, wherein the first electrode is disposed in the entire emissive area and in a part of the non-emissive area; a bank pattern disposed in the non-emissive area so as to be superposed on the depression; an organic light emitting layer disposed on the substrate; and a second electrode disposed on the organic light emitting layer. Accordingly, the organic light emitting diode display device may prevent light leakage.

First claim

What is claimed is:

1. An organic light emitting diode display device comprising:
a substrate including an emissive area and a non-emissive area;
an overcoat layer over the substrate in the emissive area and the non-emissive area;
a first electrode over the overcoat layer;
an organic light emitting layer over the first electrode; and
a second electrode over the organic light emitting layer,
wherein the first electrode includes at least one inclined portion and at least one plane portion in the non-emissive area, and
wherein a top surface of the overcoat layer in the emissive area is lower than a top surface of the overcoat layer in the non-emissive area.

2. The organic light emitting diode display device of claim 1 , further comprising:
a bank pattern over the overcoat layer in the non-emissive area,
wherein the at least one inclined portion and the at least one plane portion of the first electrode overlap the bank pattern.

3. The organic light emitting diode display device of claim 1 , wherein a shape of the overcoat layer in the non-emissive area is different from a shape of the overcoat layer in the emissive area.

4. The organic light emitting diode display device of claim 1 , wherein the overcoat layer includes at least one concave portion in the emissive area and a pattern in the non-emissive area,
wherein a distance between the substrate and the at least one concave portion is less than a distance between the substrate and the pattern, and
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the first electrode and at least one plane portion corresponding to the at least one plane portion of the first electrode.

5. The organic light emitting diode display device of claim 1 , wherein the overcoat layer includes a pattern in the non-emissive area,
wherein a height of the pattern in the non-emissive area is less than a height of the overcoat layer in the non-emissive area, and
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the first electrode and at least one plane portion corresponding to the at least one plane portion of the first electrode.

6. The organic light emitting diode display device of claim 1 , wherein the overcoat layer includes a pattern in the non-emissive area,
wherein a height of the pattern in the non-emissive area is a same as a height of the overcoat layer in the non-emissive area, and
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the first electrode and at least one plane portion corresponding to the at least one plane portion of the first electrode.

7. The organic light emitting diode display device of claim 1 , wherein the overcoat layer includes a pattern in the non-emissive area,
wherein the pattern is in a line shape in a plan view, and
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the first electrode and at least one plane portion corresponding to the at least one plane portion of the first electrode.

8. The organic light emitting diode display device of claim 1 , further comprising:
a thin film transistor in the non-emissive area, the thin film transistor covered by the overcoat layer,
wherein the overcoat layer includes a pattern in the non-emissive area,
wherein the first electrode is connected to the thin film transistor through a contact hole in the overcoat layer,
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the first electrode and at least one plane portion corresponding to the at least one plane portion of the first electrode, and
wherein the pattern has a different shape from a shape of the contact hole.

9. The organic light emitting diode display device of claim 1 , further comprising:
a color filter between the overcoat layer and the substrate,
wherein the overcoat layer includes a pattern in the non-emissive area,
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the first electrode and at least one plane portion corresponding to the at least one plane portion of the first electrode, and
wherein the organic light emitting layer is in contact with one side of the color filter in the pattern.

10. An organic light emitting diode display device comprising:
a substrate including an emissive area and a non-emissive area;
an overcoat layer over the substrate in the emissive area and the non-emissive area;
a first electrode over the overcoat layer;
an organic light emitting layer over the first electrode; and
a second electrode over the organic light emitting layer,
wherein the overcoat layer includes a plurality of micro lenses in the emissive area,
wherein the plurality of micro lenses comprise a plurality of concave portions and a connecting portion between the plurality of concave portions,
wherein the connecting portion has a hexagonal shape or a honeycomb structure in a plan view, and
wherein the first electrode has at least one inclined portion and at least one plane portion in the non-emissive area.

11. The organic light emitting diode display device of claim 10 , further comprising:
a bank pattern between the first electrode and the organic light emitting layer in the non-emissive area,
wherein the at least one inclined portion and the at least one plane portion of the first electrode overlap the bank pattern.

12. The organic light emitting diode display device of claim 10 , wherein a morphology of the overcoat layer in the non-emissive area is different from a morphology of the overcoat layer in emissive area.

13. The organic light emitting diode display device of claim 10 , wherein a top surface of the overcoat layer in the emissive area is lower than a top surface of the overcoat layer in the non-emissive area.

14. The organic light emitting diode display device of claim 10 , wherein the overcoat layer includes a pattern in the non-emissive area,
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the first electrode and at least one plane portion corresponding to the at least one plane portion of the first electrode, and
wherein a morphology of the plurality of micro lenses has different shapes from a morphology of the pattern.

15. The organic light emitting diode display device of claim 10 , wherein the plurality of micro lenses comprise a plurality of concave portions and a connecting portion between the plurality of concave portions, and
wherein a top surface of the overcoat layer in the emissive area is a top surface of the connecting portion.

16. The organic light emitting diode display device of claim 10 , wherein the plurality of micro lenses comprise a plurality of concave portions and a connecting portion between the plurality of concave portions, and
wherein a vertical length between a top surface of the connecting portion and a bottom surface of the plurality of concave portions in the emissive area is less than a vertical length between the top surface of the overcoat layer in the non-emissive area and the bottom surface of the plurality of concave portions.

17. The organic light emitting diode display device of claim 10 , wherein the overcoat layer includes a pattern in the non-emissive area,
wherein the pattern includes at least one inclined portion corresponding to the at least one inclined portion of the fi

Assignees

• Lg Display Co Ltd

Inventors

• Kim Jintae
• Kim Sookang
• Jo Soyoung
• Koo Wonhoe
• Jang Jihyang
• Lim Hyunsoo
• Choi Mingeun

Classifications

• H10K50/82

  Cathodes · CPC title

• H10K50/81

  Anodes · CPC title

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• H10K50/858

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

• H10K50/854 Primary

  comprising scattering means · CPC title