Organic electroluminescence display device having sealing structure and method of fabricating the same
View Patent ↗An organic electroluminescence display device and a method of fabricating the same are disclosed in the present invention. The organic electroluminescence display device includes a substrate, a sealing element spaced apart from the substrate, a first sealant disposed between the substrate and the sealing element, the first sealant defining an array region and an airtight space between the substrate and the sealing element, a second sealant disposed between the substrate and the sealing element, the second sealant surrounding the first sealant, a first electrode in the array region on an inner surface of the substrate, an emissive layer on the first electrode, and a second electrode on the emissive layer.
1. An organic electroluminescence device, comprising:
a substrate;
a sealing element spaced apart from the substrate;
a first sealant disposed along a peripheral portion of the substrate between the substrate and the sealing element, the first sealant defining an array region and an airtight space between the substrate and the sealing element;
a second sealant disposed between the substrate and the sealing element, the second sealant surrounding the first sealant;
a first electrode in the array region on an inner surface of the substrate;
an emissive layer on the first electrode; and
a second electrode on the emissive layer.
2. The device according to claim 1 , wherein the substrate is formed of one of glass and plastics.
3. The device according to claim 1 , wherein the sealing element is formed of one of glass and plastics.
4. The device according to claim 1 , wherein the first electrode is formed of a transparent conductive material.
5. The device according to claim 1 , wherein the second electrode is formed of an opaque conductive material.
6. The device according to claim 1 , wherein the first electrode has a work function larger than the second electrode.
7. The device according to claim 1 , wherein the first electrode includes one of indium-tin-oxide and indium-zinc-oxide.
8. The device according to claim 1 , wherein the second electrode includes one of calcium, aluminum, and aluminum alloy.
9. The device according to claim 1 , further comprising a desiccant disposed on an inner surface of the sealing element.
10. The device according to claim 1 , wherein the sealing element includes a canister.
11. A method of forming an organic electroluminescence device, comprising:
providing a substrate;
forming a sealing element spaced apart from the substrate;
forming a first sealant disposed along a peripheral portion of the substrate between the substrate and the sealing element, the first sealant defining an array region and an airtight space between the substrate and the sealing element;
forming a second sealant disposed between the substrate and the sealing element, the second sealant surrounding the first sealant;
forming a first electrode in the array region on an inner surface of the substrate;
forming an emissive layer on the first electrode; and
forming a second electrode on the emissive layer.
12. The method according to claim 11 , wherein the substrate is formed of one of glass and plastics.
13. The method according to claim 11 , wherein the sealing element is formed of one of glass and plastics.
14. The method according to claim 11 , wherein the first electrode is formed of a transparent conductive material.
15. The method according to claim 11 , wherein the second electrode is formed of an opaque conductive material.
16. The method according to claim 11 , wherein the first electrode has a work function larger than the second electrode.
17. The method according to claim 11 , wherein the first electrode includes one of indium-tin-oxide and indium-zinc-oxide.
18. The method according to claim 11 , wherein the second electrode includes one of calcium, aluminum, and aluminum alloy.
19. The method according to claim 11 , further comprising forming a desiccant disposed on an inner surface of the sealing element.
20. The method according to claim 11 , wherein the sealing element includes a canister.
21. An organic electroluminescence device, comprising:
a substrate;
a sealing element spaced apart from the substrate;
a first sealant disposed between the substrate and the sealing element, the first sealant defining an array region and an airtight space between the substrate and the sealing element;
a second sealant disposed between the substrate and the sealing element, the second sealant surrounding the first sealant;
a first electrode in the array region on an inner surface of the substrate;
an emissive layer on the first electrode; and
a second electrode on the emissive layer,
wherein the first and second sealants are disposed on the second electrode.
22. A method of forming an organic electroluminescence device, comprising:
providing a substrate;
forming a sealing element spaced apart from the substrate;
forming a first sealant disposed between the substrate and the sealing element, the first sealant defining an array region and an airtight space between the substrate and the sealing element;
forming a second sealant disposed between the substrate and the sealing element, the second sealant surrounding the first sealant;
forming a first electrode in the array region on an inner surface of the substrate;
forming an emissive layer on the first electrode; and
forming a second electrode on the emissive layer,
wherein the first and second sealants are disposed on the second electrode.