Organic semiconductor element, strain sensor, vibration sensor, and manufacturing method for organic semiconductor element
US-12068093-B2 · Aug 20, 2024 · US
Organic electroluminescent display device
US9257664B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9257664-B2 |
| Application number | US-201514627439-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 20, 2015 |
| Priority date | Feb 20, 2014 |
| Publication date | Feb 9, 2016 |
| Grant date | Feb 9, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An organic EL display device includes an organic EL element having a first light-emitting portion, a second light-emitting portion, an n-type charge-generation layer, and a p-type charge-generation layer. The first light-emitting portion has a first light-emitting layer and a hole-injection layer. The first light-emitting layer is formed between an anode and a cathode. The hole-injection layer is made of amorphous carbon and in contact with the anode. The second light-emitting portion has a second light-emitting layer, which is formed between the first light-emitting portion and the cathode. The n-type charge-generation layer is formed between the first and second light-emitting portions. The n-type charge-generation layer is in contact with the first light-emitting portion. The p-type charge-generation layer is made of amorphous carbon and formed between the n-type charge-generation layer and the second light-emitting portion. The p-type charge-generation layer is in contact with the second light-emitting portion.
First claim
Opening claim text (preview).
What is claimed is: 1. An organic EL display device including an organic EL element, the organic EL element comprising: an anode electrode made of a conductive material; a cathode electrode made of a conductive material; a first light-emitting portion having a first light-emitting layer and a hole injection layer, the first light-emitting layer being formed between the anode electrode and the cathode electrode to emit light in response to a potential difference applied between the anode electrode and the cathode electrode, the hole injection layer being made of amorphous carbon and in contact with the anode electrode; a second light-emitting portion having a second light-emitting layer, the second light-emitting layer being formed between the first light-emitting portion and the cathode electrode to emit light in response to the potential difference applied between the anode electrode and the cathode electrode; an n-type charge generation layer formed between the first light-emitting portion and second light-emitting portion, the n-type charge generation layer being in contact with the first light-emitting portion to supply electrons to the first light-emitting portion; and a p-type charge generation layer made of amorphous carbon and formed between the n-type charge generation layer and the second light-emitting portion, the p-type charge generation layer being in contact with the second light-emitting portion to supply holes to the second light-emitting portion. 2. The organic EL display device according to claim 1 , further comprising a metal layer, made of metal, between the n-type charge generation layer and the p-type charge generation layer. 3. The organic EL display device according to claim 2 , wherein the metal layer is made of a material selected from the group consisting of Ag alloy, Al alloy, Ag, and Al. 4. The organic EL display device according to claim 1 , wherein the amorphous carbon is formed as a layer by sputtering in an atmosphere including argon gas.
Assignees
Inventors
Classifications
Carrier injection layers · CPC title
- H10K71/30Primary
Doping active layers, e.g. electron transporting layers · CPC title
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9257664B2 cover?
- An organic EL display device includes an organic EL element having a first light-emitting portion, a second light-emitting portion, an n-type charge-generation layer, and a p-type charge-generation layer. The first light-emitting portion has a first light-emitting layer and a hole-injection layer. The first light-emitting layer is formed between an anode and a cathode. The hole-injection layer …
- Who is the assignee on this patent?
- Japan Display Inc
- What technology area does this patent fall under?
- Primary CPC classification H10K71/30. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 09 2016 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).