Lighting apparatus

Patent metadata

Field	Value
Publication number	US-11239281-B2
Application number	US-201916726599-A
Country	US
Kind code	B2
Filing date	Dec 24, 2019
Priority date	Dec 28, 2018
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A lighting apparatus comprising a lighting part that includes a light emitting area having a plurality of first light emitting areas that are separated apart from each other and a plurality of second light emitting areas separated apart from each other and a non-light emitting area including a first non-light emitting area surrounding the plurality of first light emitting areas and the plurality of second light emitting areas and a plurality of second non-light emitting areas extending from the first non-light emitting area, the lighting apparatus comprises a substrate; a plurality of first electrodes disposed on the substrate in the light emitting area; an organic layer disposed on the plurality of first electrodes; a second electrode disposed on the organic layer; and an encapsulation part disposed on the second electrode; wherein the plurality of first light emitting areas are arranged in a first direction, and the plurality of second light emitting areas are arranged in a second direction intersecting with the first direction, and wherein the second non-light emitting areas correspond to an area in which a plurality of patterns are included.

First claim

What is claimed is:

1. A lighting apparatus comprising a lighting part that includes a light emitting area having a plurality of first light emitting areas that are separated apart from each other and a plurality of second light emitting areas separated apart from each other and a non-light emitting area including a first non-light emitting area surrounding the plurality of first light emitting areas and the plurality of second light emitting areas and a plurality of second non-light emitting areas extending from the first non-light emitting area, the lighting apparatus comprising:
a substrate;
a plurality of first electrodes disposed on the substrate in the light emitting area;
an organic layer disposed on the plurality of first electrodes;
a second electrode disposed on the organic layer; and
an encapsulation part disposed on the second electrode;
wherein the plurality of first light emitting areas are arranged in a first direction, and the plurality of second light emitting areas are arranged in a second direction intersecting with the first direction,
wherein each of the plurality of second non-light emitting areas corresponds to an area in which a plurality of patterns are included,
wherein at least two of the plurality of second non-light emitting areas have different sizes,
wherein the sizes of the plurality of patterns gradually increase or decreases from a center portion of the lighting part toward an outer side of the center portion; and
wherein the plurality of patterns is distributed more densely in the center portion of the lighting part than the outer side of the center portion.

2. The lighting apparatus according to claim 1 , further comprising:
a plurality of auxiliary electrodes disposed on the substrate in the light emitting area and the first non-light emitting area, the plurality of first electrodes overlapping and connecting with the plurality of auxiliary electrodes; and
an insulating film overlapping a part of the plurality of first electrodes.

3. The lighting apparatus according to claim 1 , wherein each of the plurality of first light emitting areas and the plurality of second light emitting areas includes a plurality of unitary light emitting parts.

4. The lighting apparatus according to claim 3 , wherein each of the plurality of unitary light emitting parts includes one first electrode among the plurality of first electrodes, the organic layer disposed on and in contact with the one first electrode, and the second electrode disposed on the organic layer.

5. The lighting apparatus according to claim 3 , further comprising a third non-light emitting area disposed between one unitary light emitting part and another unitary light emitting part adjacent to the one unitary light emitting part in each of the plurality of first light emitting area and the plurality of second light emitting areas.

6. The lighting apparatus according to claim 5 , wherein the third non-light emitting area corresponds to an area in which an insulating film is disposed.

7. The lighting apparatus according to claim 6 , wherein the insulating film is disposed in the plurality of first light emitting areas, the plurality of second light emitting areas, and the first non-light emitting area and is disposed in the third non-light emitting areas of the plurality of first light emitting areas and the plurality of second light emitting areas.

8. The lighting apparatus according to claim 1 , wherein the plurality of second non-light emitting areas are separated apart from each other.

9. The lighting apparatus according to claim 1 , wherein each of the plurality of patterns includes a hole.

10. The lighting apparatus according to claim 1 , wherein, a width of at least one of the plurality of patterns in a direction perpendicular to a force applied to the lighting apparatus is zero when the lighting apparatus is extended.

11. The lighting apparatus according to claim 1 , wherein a maximum value of a length by which the lighting apparatus extends corresponds to a sum of widths of the plurality of patterns when the lighting apparatus is extended.

12. The lighting apparatus according to claim 2 , wherein the plurality of auxiliary electrodes include at least one opening formed by arranging a plurality of first auxiliary electrodes extending in the first direction and a plurality of second auxiliary electrodes extending in the second direction.

13. The lighting apparatus according to claim 12 , wherein a part of one of the plurality of first electrodes is disposed inside the opening of the plurality of auxiliary electrodes, and the first electrode includes an area that is in contact with the plurality of auxiliary electrodes.

14. The lighting apparatus according to claim 13 , wherein a part area of the at least one opening corresponds to a unitary light emitting part.

15. The lighting apparatus according to claim 1 , wherein the substrate is a flexible substrate.

16. The lighting apparatus according to claim 2 , wherein an electric resistance of the plurality of first electrodes is higher than that of the plurality of auxiliary electrodes.

17. The lighting apparatus according to claim 1 , further comprising a pad part disposed on an outer side of the lighting part for applying signals to the lighting part.

18. The lighting apparatus according to claim 1 wherein the plurality of patterns is distributed more densely in a center portion of the lighting part than an outer side of the center portion.

19. The lighting apparatus according to claim 17 , further comprising:
a plurality of auxiliary electrodes disposed on the substrate in the light emitting area and the first non-light emitting area, the plurality of first electrodes overlapping and connecting with the plurality of auxiliary electrodes in the light emitting area; and
an insulating film overlapping a part of the first electrodes.

20. The lighting apparatus according to claim 19 , wherein the pad part comprises a first pad electrode extending from the auxiliary electrode, and a second pad electrode extending from the first electrode and connected with the first pad electrode.

21. The lighting apparatus according to claim 20 , wherein the pad part further comprises a third pad electrode extending from the second electrode and connected with the first pad electrode.

Assignees

• Lg Display Co Ltd

Inventors

• Park Joonwon

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/84

  Parallel electrical configurations of multiple OLEDs · CPC title

• H10K59/80516 Primary

  combined with auxiliary electrodes, e.g. ITO layer combined with metal lines · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title