Light-emitting panel, light-emitting device using the light-emitting panel, and method for manufacturing the light-emitting panel

1. A light-emitting panel comprising:

at least two first electrodes adjacent to each other over a substrate;

a partition formed between the at least two first electrodes and covering partially top surfaces of the at least two first electrodes;

a layer containing a light-emitting compound over the at least two first electrodes and the partition; and

a second electrode over the layer containing the light-emitting compound, the second electrode overlapping with the at least two first electrodes and the partition,

wherein the layer containing the light-emitting compound includes a portion of a thickness A 0 over one of the at least two first electrodes, and a portion of a thickness A 1 over a side surface of the partition, the thickness A 1 being smaller than half of the thickness A 0 ,

wherein the second electrode includes a portion of a thickness B 0 over one of the at least two first electrodes, and a portion of a thickness B 1 over the side surface of the partition, a ratio B 1 /B 0 being higher than a ratio A 1 /A 0 , and

wherein a portion of the layer containing the light-emitting compound overlapping with a top surface of the partition is thicker than the portion of the thickness A 1 over the side surface of the partition.

2. The light-emitting panel according to claim 1 ,

wherein the side surface forms an angle of greater than or equal to 55° and less than or equal to 90° with the substrate.

3. The light-emitting panel according to claim 1 ,

wherein the partition includes a side surface having an angle of greater than or equal to 90° and less than or equal to 100° with respect to the substrate.

4. The light-emitting panel according to claim 1 ,

wherein B 1 is greater than B 0 .

5. The light-emitting panel according to claim 1 , further comprising a spacer formed over the partition,

wherein the spacer is covered with the layer containing the light-emitting compound and the second electrode.

6. The light-emitting panel according to claim 1 ,

wherein the light-emitting compound is an organic light-emitting compound.

7. The light-emitting panel according to claim 1 ,

wherein the at least two first electrodes are respectively part of a first light-emitting element and a second light-emitting element, each of the first and the second light-emitting elements comprising the layer containing the light-emitting compound and the second electrode.

8. The light-emitting panel according to claim 1 ,

wherein the layer containing the light-emitting compound includes a light-emitting unit and a charge generation layer, and

wherein the charge generation layer includes a substance having a high hole-transport property and an acceptor substance with respect to the substance having a high hole-transport property, and is provided between the light-emitting unit and one of the at least two first electrodes.

9. The light-emitting panel according to claim 1 ,

wherein the layer containing the light-emitting compound includes a light-emitting unit and an electron-injection buffer, and

wherein the electron-injection buffer includes a substance having a high electron-transport property and a donor substance with respect to the substance having a high electron-transport property, and is provided between the light-emitting unit and one of the at least two first electrodes.

10. The light-emitting panel according to claim 1 ,

wherein the layer containing the light-emitting compound includes at least two light-emitting units and at least one intermediate layer, and

wherein the at least one intermediate layer is provided with an electron-injection buffer including a substance having a high electron-transport property and a donor substance with respect to the substance having a high electron-transport property, and is provided between the at least two light-emitting units.

11. A light-emitting device comprising the light-emitting panel according to claim 1 .

12. A light-emitting panel comprising:

at least two first electrodes adjacent to each other over a substrate;

an insulating layer formed between the at least two first electrodes and covering partially top surfaces of the at least two first electrodes;

a layer containing a light-emitting compound over the at least two first electrodes and the insulating layer; and

a second electrode over the layer containing the light-emitting compound, the second electrode overlapping with the at least two first electrodes and the insulating layer,

wherein the layer containing the light-emitting compound includes a portion of a thickness A 0 over one of the at least two first electrodes, and a portion of a thickness A 1 over a side surface of the insulating layer, the thickness A 1 being smaller than the thickness A 0 , and

wherein the second electrode includes a portion of a thickness B 0 over one of the at least two first electrodes, and a portion of a thickness B 1 over the side surface of the insulating layer partition, a ratio B 1 /B 0 being higher than a ratio A 1 /A 0 , and

wherein a portion of the layer containing the light-emitting compound overlapping with a top surface of the insulating layer is thicker than the portion of the thickness A 1 over the side surface of the insulating layer.

13. The light-emitting panel according to claim 12 ,

wherein the thickness A1 is smaller than half of the thickness A 0 .

14. The light-emitting panel according to claim 12 ,

wherein the insulating layer comprises a partition and a spacer on top of and in direct contact with the partition.

15. The light-emitting panel according to claim 12 ,

wherein the insulating layer comprises a partition and a spacer on top of and in direct contact with the partition, the spacer comprising a rounded top surface.

16. The light-emitting panel according to claim 12 ,

wherein the at least two first electrodes are respectively part of a first light-emitting element and a second light-emitting element, each of the first and the second light-emitting elements comprising the layer containing the light-emitting compound and the second electrode.

17. A light-emitting device comprising the light-emitting panel according to claim 12 .

18. A method for manufacturing a light-emitting panel comprising:

forming at least two first electrodes adjacent to each other over a substrate;

forming a partition between the at least two first electrodes, the partition covering partially top surfaces of the at least two first electrodes;

forming a layer containing a light-emitting compound by a first deposition method, the first deposition method having directivity in a direction vertical to the substrate,

forming a second electrode by a second deposition method,

wherein the first deposition method is such that the layer containing the light-emitting compound includes a portion of a thickness A 0 over one of the at least two first electrodes, and a portion of a thickness A 1 over a side surface of the partition, the thickness A1 being smaller than half of the thickness A 0 ,

wherein the first deposition method is such that a portion of the layer containing the light-emitting compound overlapping with a top surface of the partition is thicker than the portion of the thickness A 1 over the side surface of the partition, and

wherein the second deposition method is such that the second electrode includes a portion of a thickness B 0 over one of the at least two first electrodes, and a portion of a thickness B 1 over the side surface of the partition, a ratio B 1 /B 0 being higher than a ratio A 1 /A 0 .

19. The method for manufacturing a light-emitting panel according to claim 18 ,

wherein the first deposition method is a resistance heating method and the second deposition method is a sputtering method.

20. The method for manufacturing a light-emitting panel according to claim 18 ,

wherein the side surface forms an angle of greater than or equal to 55° and less than or equal to 90° with the substrate.

21. The method for manufacturing a light-emitting panel according to claim 18 ,

wherein the side surface forms an angle of greater than or equal to 90° and less than or equal to 100° with the substrate.