Light-emitting device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10043989-B2
Application number	US-201715583058-A
Country	US
Kind code	B2
Filing date	May 1, 2017
Priority date	Dec 23, 2011
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A light-emitting device having a curved light-emitting surface is provided. Further, a highly-reliable light-emitting device is provided. A substrate with plasticity is used. A light-emitting element is formed over the substrate in a flat state. The substrate provided with the light-emitting element is curved and put on a surface of a support having a curved surface. Then, a protective layer for protecting the light-emitting element is formed in the same state. Thus, a light-emitting device having a curved light-emitting surface, such as a lighting device or a display device can be manufactured.

First claim

What is claimed is:

1. A display device comprising:
a substrate with plasticity, the substrate having a curved surface;
a light-emitting unit over the curved surface of the substrate;
a sealing layer covering a side surface and a top surface of the light-emitting unit; and
a protective layer over and in contact with the sealing layer,
wherein the light-emitting unit comprises a light-emitting layer between a pair of electrodes,
wherein a shape of the light-emitting unit comprises a figure drawn with a curve of a first curvature having a first center of curvature and a curve of a second curvature having a second center of curvature, and
wherein the substrate is between the first center of curvature and the second center of curvature.

2. The display device according to claim 1 , wherein the substrate comprises at least one of a metal material and an alloy material.

3. The display device according to claim 1 , wherein the substrate comprises at least one of aluminum, copper, iron, nickel, titanium, and magnesium.

4. The display device according to claim 1 , further comprising a planarization layer over the substrate,
wherein the planarization layer comprises a resin in which particles comprising at least one of a metal material and an alloy material are dispersed.

5. The display device according to claim 1 , wherein the light-emitting unit comprises a plurality of pixels.

6. The display device according to claim 1 , wherein the protective layer comprises a glass layer.

7. The display device according to claim 1 , wherein the protective layer is a stack in which a glass layer, a bonding layer, and a resin layer are stacked.

8. The display device according to claim 1 , wherein the light-emitting unit has a wave-shaped light-emitting surface.

9. The display device according to claim 1 , wherein the light-emitting unit has a convex-curved light-emitting surface.

10. The display device according to claim 1 , wherein the light-emitting unit has a concave-curved light-emitting surface.

11. A car comprising the display device according to claim 1 ,
wherein the car comprises an interior comprising a curved surface, and
wherein the display device is incorporated along the curved surface of the interior of the car.

12. A display device comprising:
a substrate with plasticity, the substrate having a curved surface;
a light-emitting unit over the curved surface of the substrate;
a sealing layer covering a side surface and a top surface of the light-emitting unit; and
a protective layer over and in contact with the sealing layer,
wherein the light-emitting unit comprises a light-emitting layer between a pair of electrodes,
wherein a shape of the light-emitting unit comprises a figure drawn with a curve of a curvature having a center of curvature and a straight line, and
wherein the substrate is over the center of curvature.

13. The display device according to claim 12 , wherein the substrate comprises at least one of a metal material and an alloy material.

14. The display device according to claim 12 , wherein the substrate comprises at least one of aluminum, copper, iron, nickel, titanium, and magnesium.

15. The display device according to claim 12 , further comprising a planarization layer over the substrate,
wherein the planarization layer comprises a resin in which particles comprising at least one of a metal material and an alloy material are dispersed.

16. The display device according to claim 12 , wherein the light-emitting unit comprises a plurality of pixels.

17. The display device according to claim 12 , wherein the protective layer comprises a glass layer.

18. The display device according to claim 12 , wherein the protective layer is a stack in which a glass layer, a bonding layer, and a resin layer are stacked.

19. The display device according to claim 12 , wherein the light-emitting unit has a wave-shaped light-emitting surface.

20. The display device according to claim 12 , wherein the light-emitting unit has a convex-curved light-emitting surface.

21. The display device according to claim 12 , wherein the light-emitting unit has a concave-curved light-emitting surface.

22. A car comprising the display device according to claim 12 ,
wherein the car comprises an interior comprising a curved surface, and
wherein the display device is incorporated along the curved surface of the interior of the car.

Assignees

• Semiconductor Energy Lab

Inventors

• Momma Yohei
• Suganoya Tomohiko
• Obana Saki

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/5237

  Electricity · mapped topic

• H01L51/0097 Primary

  Electricity · mapped topic

• H01L27/1225

  Electricity · mapped topic

• H01L27/3244

  Electricity · mapped topic