Light-emitting device and manufacturing method thereof
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.
1. A lighting device comprising:
a switch; and
a light-emitting portion, the light-emitting portion comprising:
a substrate having a curved surface and with plasticity;
a planarization layer over the curved surface of the substrate;
a light-emitting element over the planarization layer, the light-emitting element comprising a light-emitting layer between a pair of electrodes;
a sealing layer covering the light-emitting element; and
a protective layer over and in contact with the sealing layer,
wherein the substrate does not comprise a flat top surface.
2. The lighting device according to claim 1 , wherein the light-emitting portion has a wave-shaped light-emitting surface.
3. The lighting device according to claim 1 , wherein the light-emitting portion has a convex-curved light-emitting surface.
4. The lighting device according to claim 1 , wherein the light-emitting portion has a concave-curved light-emitting surface.
5. The lighting device according to claim 1 , wherein the substrate comprises at least one of a metal material and an alloy material.
6. The lighting device according to claim 1 , wherein the substrate comprises at least one of aluminum, copper, iron, nickel, titanium, and magnesium.
7. The lighting device according to claim 1 , wherein the planarization layer comprises a resin in which particles comprising at least one of a metal material and an alloy material are dispersed.
8. The lighting device according to claim 1 , further comprising a plurality of pixels over the curved surface of the substrate.
9. The lighting device according to claim 1 , wherein the protective layer comprises a glass layer.
10. The lighting 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.
11. A mobile phone comprising:
a display portion incorporated in a housing, the display portion comprising:
a substrate having a curved surface and with plasticity;
a planarization layer over the curved surface of the substrate;
a light-emitting element over the planarization layer, the light-emitting element comprising a light-emitting layer between a pair of electrodes;
a sealing layer covering the light-emitting element; and
a protective layer over and in contact with the sealing layer,
wherein the substrate does not comprise a flat top surface.
12. The mobile phone according to claim 11 , wherein the substrate comprises at least one of a metal material and an alloy material.
13. The mobile phone according to claim 11 , wherein the substrate comprises at least one of aluminum, copper, iron, nickel, titanium, and magnesium.
14. The mobile phone according to claim 11 , wherein the planarization layer comprises a resin in which particles comprising at least one of a metal material and an alloy material are dispersed.
15. The mobile phone according to claim 11 , further comprising a plurality of pixels over the curved surface of the substrate.
16. The mobile phone according to claim 11 , wherein the protective layer comprises a glass layer.
17. The mobile phone according to claim 11 , wherein the protective layer is a stack in which a glass layer, a bonding layer, and a resin layer are stacked.
18. A wristband-type display device comprising:
a housing;
a display portion, the display portion comprising:
a substrate having a curved surface and with plasticity;
a planarization layer over the curved surface of the substrate;
a light-emitting element over the planarization layer, the light-emitting element comprising a light-emitting layer between a pair of electrodes;
a sealing layer covering the light-emitting element; and
a protective layer over and in contact with the sealing layer;
an operation button; and
a sending and receiving device,
wherein the substrate does not comprise a flat top surface.
19. The wristband-type display device according to claim 18 , wherein the substrate comprises at least one of a metal material and an alloy material.
20. The wristband-type display device according to claim 18 , wherein the substrate comprises at least one of aluminum, copper, iron, nickel, titanium, and magnesium.
21. The wristband-type display device according to claim 18 , wherein the planarization layer comprises a resin in which particles comprising at least one of a metal material and an alloy material are dispersed.
22. The wristband-type display device according to claim 18 , further comprising a plurality of pixels over the curved surface of the substrate.
23. The wristband-type display device according to claim 18 , wherein the protective layer comprises a glass layer.
24. The wristband-type display device according to claim 18 , wherein the protective layer is a stack in which a glass layer, a bonding layer, and a resin layer are stacked.