Translucent conductive substrate for organic light emitting devices
US-9222641-B2 · Dec 29, 2015 · US
Light scattering layer having particles for an organic EL light emitting device
US9871227B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9871227-B2 |
| Application number | US-201515327769-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 30, 2015 |
| Priority date | Jul 31, 2014 |
| Publication date | Jan 16, 2018 |
| Grant date | Jan 16, 2018 |
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Abstract
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An organic EL light-emitting device including: a light-emitting layer capable of generating light; a light-scattering structure capable of scattering the light; a first light-scattering layer containing first light-scattering particles having an average particle diameter of 0.1 μm to 2 μm and a first binder; and a concavo-convex structure in a streak array pattern, the light emitting layer, the light-scattering structure, the first light-scattering layer, and the concavo-convex structure being disposed in this order, wherein a mean free path L 1 of light scattering in the first light-scattering layer and a thickness D 1 of the first light-scattering layer satisfy D 1 /L 1 <15.
First claim
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The invention claimed is: 1. An organic EL light-emitting device comprising: a light-emitting layer capable of generating light; a light-scattering structure capable of scattering the light; a first light-scattering layer containing first light-scattering particles having an average particle diameter of 0.1 μm to 2 μm and a first binder; and a concavo-convex structure in a streak array pattern, the light emitting layer, the light-scattering structure, the first light-scattering layer, and the concavo-convex structure being disposed in this order, wherein a mean free path L 1 of light scattering in the first light-scattering layer and a thickness D 1 of the first light-scattering layer satisfy D 1 /L 1 <15. 2. The organic EL light-emitting device according to claim 1 , wherein the average particle diameter of the first light-scattering particles is 0.4 μm to 1 μm, and D 1/ L 1<6. 3. The organic EL light-emitting device according to claim 1 , wherein the light-scattering structure is a second light-scattering layer containing second light-scattering particles, and a mean free path L 2 of light scattering in the second light-scattering layer and a thickness D 2 of the second light-scattering layer satisfy (D 1 /L 1 +D 2 /L 2 )<6. 4. The organic EL light-emitting device according to claim 3 , wherein a ratio of the second light-scattering particles in the second light-scattering layer is 0.5% by weight or more and 40% by weight or less. 5. The organic EL light-emitting device according to claim 3 , wherein an average particle diameter of the second light-scattering particles is 0.2 μm or more and 2 μm or less. 6. The organic EL light-emitting device according to claim 1 , wherein the concavo-convex structure includes a prism. 7. The organic EL light-emitting device according to claim 6 , wherein the prism has an apex angle of 80° or smaller. 8. The organic EL light-emitting device according to claim 1 , wherein the first binder has a refractive index of 1.5 or more. 9. The organic EL light-emitting device according to claim 1 , wherein the first binder contains high refractive index nanoparticles. 10. The organic EL light-emitting device according to claim 9 , wherein the high refractive index nanoparticles are contained in a ratio of 20% by weight or more and 80% by weight or less relative to a total amount of the first binder. 11. The organic EL light-emitting device according to claim 1 , wherein the first light-scattering layer has adhesiveness.
Assignees
Inventors
Classifications
Electricity · mapped topic
- H01L51/5268Primary
Electricity · mapped topic
Details · CPC title
comprising refractive means, e.g. lenses · CPC title
- H10K50/854Primary
comprising scattering means · CPC title
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- What does patent US9871227B2 cover?
- An organic EL light-emitting device including: a light-emitting layer capable of generating light; a light-scattering structure capable of scattering the light; a first light-scattering layer containing first light-scattering particles having an average particle diameter of 0.1 μm to 2 μm and a first binder; and a concavo-convex structure in a streak array pattern, the light emitting layer, the…
- Who is the assignee on this patent?
- Zeon Corp
- What technology area does this patent fall under?
- Primary CPC classification H01L51/5268. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 16 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).