Organic EL device as well as display apparatus, image pickup apparatus, communication apparatus, lighting apparatus, luminaire, and moving body each including the same
US11997858B2 · kind B2 · utility
4Cited by
0References
25Claims
0Family size
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Key dates
| Filing date | Dec 31, 2020 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Jan 28, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/311
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.