Display device and method of manufacturing a display device
US-2016293902-A1 · Oct 6, 2016 · US
Organic electroluminescent element
US9012902B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9012902-B2 |
| Application number | US-201214007440-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2012 |
| Priority date | Mar 31, 2011 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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Abstract
Official abstract text for this publication.
Provided is an organic electroluminescent element superior in long-term durability and lifetime characteristics. The organic electroluminescent element has a structure where plurality of light-emitting layers formed via an intermediate layer are interposed between a positive electrode and a negative electrode. The intermediate layer has a mixed layer, a first layer, and a hole-injection layer which are formed in this order from the positive electrode to the negative electrode, the mixed layer containing an electron-donating substance and an electron-transporting organic material, and the first layer being made of an electron-transporting material. The first layer has a thickness in a range of 0.2 to 2.0 nm. The hole-injection layer consists of an electro-accepting organic material.
First claim
Opening claim text (preview).
The invention claimed is: 1. An organic electroluminescent element, comprising: a plurality of light-emitting layers between positive and negative electrodes; and an intermediate layer interposed between the plurality of light emitting layers, wherein the intermediate layer includes a mixed layer, a first layer and a hole injection layer which are formed in order from the positive electrode to the negative electrode, the mixed layer containing an electron-donating substance an…
Assignees
Inventors
Classifications
Electricity · mapped topic
Electricity · mapped topic
- H01L51/5008Primary
Electricity · mapped topic
Electricity · mapped topic
- H10K50/131Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9012902B2 cover?
- Provided is an organic electroluminescent element superior in long-term durability and lifetime characteristics. The organic electroluminescent element has a structure where plurality of light-emitting layers formed via an intermediate layer are interposed between a positive electrode and a negative electrode. The intermediate layer has a mixed layer, a first layer, and a hole-injection layer w…
- Who is the assignee on this patent?
- Ide Nobuhiro, Ito Norihiro, Tsuji Hiroya, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H01L51/5008. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 21 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).