Efficient organic light-emitting diodes and fabrication of the same
US-2015041780-A1 · Feb 12, 2015 · US
Light-emitting element, light-emitting device, electronic device, and lighting device
US9203045B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9203045-B2 |
| Application number | US-201314090241-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 26, 2013 |
| Priority date | Nov 29, 2012 |
| Publication date | Dec 1, 2015 |
| Grant date | Dec 1, 2015 |
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Abstract
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Provided is a novel light-emitting element and a light-emitting element with high light emission efficiency. A light-emitting element at least includes a first electrode, a first light-emitting layer over the first electrode, a second light-emitting layer over and in contact with the first light-emitting layer, a third light-emitting layer over and in contact with the first light-emitting layer, and a second electrode over the third light-emitting layer. One of the first light-emitting layer and the second light-emitting layer contains at least a green-light-emitting phosphorescent compound. The other of the first light-emitting layer and the second light-emitting layer contains at least an orange-light-emitting phosphorescent compound. The third light-emitting layer contains at least a blue-light-emitting hole-trapping fluorescent compound and an organic electron-transport compound that disperses the fluorescent compound.
First claim
Opening claim text (preview).
What is claimed is: 1. A light-emitting device comprising: a first electrode; a hole-transport layer over the first electrode, the hole-transport layer comprising a first organic compound; a first light-emitting layer over the hole-transport layer, the first light-emitting layer comprising a first phosphorescent compound which is configured to emit one of green light or orange light and a second organic compound; a second light-emitting layer over the first light-emitting l…
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Electricity · mapped topic
- H01L51/504Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9203045B2 cover?
- Provided is a novel light-emitting element and a light-emitting element with high light emission efficiency. A light-emitting element at least includes a first electrode, a first light-emitting layer over the first electrode, a second light-emitting layer over and in contact with the first light-emitting layer, a third light-emitting layer over and in contact with the first light-emitting layer…
- Who is the assignee on this patent?
- Semiconductor Energy Lab
- What technology area does this patent fall under?
- Primary CPC classification H01L51/504. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 01 2015 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).