Organic light emitting diode display device with electrode disposed over convex portions of insulating layer

Patent metadata

Field	Value
Publication number	US-11925059-B2
Application number	US-202016917491-A
Country	US
Kind code	B2
Filing date	Jun 30, 2020
Priority date	Sep 29, 2016
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

An organic light emitting diode display device includes a substrate having an emitting area and a non-emitting area. An insulating layer is on the substrate, and the insulating layer includes a plurality of convex portions, a plurality of connecting portions and at least one wall in the emitting area. A height of the at least one wall is greater than a height of the plurality of convex portions. A first electrode is on the substream, emitting layer is on the first electrode, a second electrode is on the emitting layer. The first electrode, the emitting layer and the second electrode constitute a light emitting diode.

First claim

What is claimed is:

1. An organic light emitting diode display device, comprising:
a substrate having an emitting area and a non-emitting area;
an insulating layer over the substrate, the insulating layer having micro lenses including a plurality of convex portions in the emitting area;
a first electrode over the insulating layer;
a bank over the first electrode in the non-emitting area;
an emitting layer over the first electrode extending to a top surface of the bank in non-emitting area; and
a second electrode over the emitting layer,
wherein a portion of the plurality of convex portions extends from the emitting area to the non-emitting area,
wherein the first electrode extends to a slanting surface of the plurality of convex portions in the non-emitting area,
wherein a thickness of the insulating layer in the non-emitting area is greater than a thickness of the plurality of convex portions of the micro lens of the insulating layer in the emitting area,
wherein the bank covers the first electrode over the slanting surface of the convex portion of the insulating layer in the non-emitting area,
wherein the insulating layer further includes at least one wall in the emitting area, and
wherein the at least one wall extends from a top surface of the insulating layer, and a top surface of the at least one wall is exposed through the first electrode.

2. The device of claim 1 , further comprising: a color filter layer corresponding to the emitting area.

3. The device of claim 2 , wherein an edge of the color filter layer extends beyond an edge of the plurality of convex portions toward the non-emitting area, and
wherein the first electrode over the slanting surface of the plurality of convex portions of the non-emitting area overlaps with the color filter.

4. The device of claim 2 , wherein an edge of the plurality of convex portions, an edge of the bank and an edge of the color filter layer overlap each other in the non-emitting area.

5. The device of claim 1 , wherein the bank overlays an edge of the plurality of convex portions.

6. The device of claim 1 , wherein a boundary between the emitting area and the non-emitting area overlaps a portion of the plurality of convex portions of the micro lenses configured to improve a light extraction efficiency.

7. The device of claim 1 , wherein the plurality of convex portions are arranged in a line along a first direction and staggered along a second direction.

8. The device of claim 1 , wherein the insulating layer further includes at least one wall in the emitting area, and
wherein a top portion of the at least one wall is directly contacted byte the emitting layer in the emitting area.

9. The device of claim 8 , wherein portions of the first electrode around the at least one wall are electrically connected to each other in the emitting area.

10. The device of claim 1 , wherein the insulating layer further includes at least one wall,
wherein the first electrode is disposed in the emitting area to expose a side portion of the at least one wall, and
wherein the emitting layer and the second electrode are disposed on the first electrode and the at least one wall.

11. The device of claim 10 , wherein portions of the first electrode around the at least one wall are electrically connected to each other in the emitting area.

12. The device of claim 1 , wherein the insulating layer further includes at least one wall, and
wherein the first electrode is disposed in the emitting area to cover a top portion of the at least one wall.

13. The device of claim 12 , wherein portions of the first electrode around the at least one wall are electrically connected to each other in the emitting area.

14. The device of claim 12 , further comprising a light shielding pattern disposed over the first electrode over the at least one wall.

15. The device of claim 1 , wherein the convex portion of the insulating layer has a first height at the non-emitting area greater than a second height of the convex portion of the insulating layer at the emitting area.

16. An organic light emitting diode display device, comprising:
a substrate having an emitting area and a non-emitting area;
an insulating layer over the substrate, the insulating layer having micro lenses including a plurality of convex portions in the emitting area;
a first electrode over the insulating layer;
a bank over the first electrode in the non-emitting area;
an emitting layer over the first electrode extending to a top surface of the bank in non-emitting area; and
a second electrode over the emitting layer,
wherein a portion of the plurality of convex portions extends from the emitting area to the non-emitting area,
wherein the first electrode extends to a slanting surface of the plurality of convex portions in the non-emitting area,
wherein the convex portion of the insulating layer in the non-emitting area has a first height from a bottom surface to a top surface of the insulating layer,
wherein the convex portion of the insulating layer in the emitting area has a second height from a bottom surface to a top surface of the insulating layer,
wherein the first height is greater than the second height,
wherein the insulating layer further includes at least one wall in the emitting area, and
wherein the at least one wall extends from a top surface of the insulating layer, and a top surface of the at least one wall is exposed through the first electrode.

Assignees

• Lg Display Co Ltd

Inventors

• Lim Hyun-Soo
• Lee Kang-Ju
• Kim Soo-Kang
• Koo Won-Hoe
• Choi Min-Geun

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/879

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

• H10K59/878

  comprising reflective means · CPC title

• H10K59/80515

  characterised by their shape · CPC title

• H10K50/856 Primary

  comprising reflective means · CPC title