Display apparatus
US-2024381702-A1 · Nov 14, 2024 · US
Light-emitting element, light-emitting device, lighting device, and electronic device
US9099682B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9099682-B2 |
| Application number | US-87439210-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 2, 2010 |
| Priority date | Sep 7, 2009 |
| Publication date | Aug 4, 2015 |
| Grant date | Aug 4, 2015 |
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Abstract
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A light-emitting element is provided, in which n (n is a natural number of two or more) EL layers are provided between an anode and a cathode. Between the m-th (in is a natural number, 1≦m≦n−1) EL layer and the (m+1)-th EL layer, a first layer containing any of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, and a rare earth metal compound, a second layer containing a substance having high electron-transport properties in contact with the first layer, and a charge-generation layer containing a substance having high hole-transport properties and an acceptor substance in contact with the second layer are provided in this order over the anode. The charge-generation layer does not have a peak of an absorption spectrum in a visible light region.
First claim
Opening claim text (preview).
The invention claimed is: 1. A light-emitting element comprising: n (n is a natural number of two or more) light-emitting layers between an anode and a cathode; a first layer between an m-th (in is a natural number, 1≦m≦n−1) light-emitting layer and an (m+1)-th light-emitting layer, wherein the first layer contains one selected from the group consisting of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, an…
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Classifications
Electricity · mapped topic
- H10K50/19Primary
Electricity · mapped topic
Electricity · mapped topic
- H01L51/5278Primary
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9099682B2 cover?
- A light-emitting element is provided, in which n (n is a natural number of two or more) EL layers are provided between an anode and a cathode. Between the m-th (in is a natural number, 1≦m≦n−1) EL layer and the (m+1)-th EL layer, a first layer containing any of an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, and a rare ea…
- Who is the assignee on this patent?
- Nowatari Hiromi, Seo Satoshi, Semiconductor Energy Lab
- What technology area does this patent fall under?
- Primary CPC classification H10K50/19. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 04 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).