Organic electroluminescence element, display device, and lighting device
US12185625B2 · kind B2 · utility
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Key dates
| Filing date | Nov 14, 2019 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Jan 4, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescent device having a light-emitting layer, wherein the light-emitting layer contains a host compound having a boron atom and an oxygen atom in the molecule as a first component, a thermally assisting delayed fluorescent material such that the energy difference ΔEST between the excited singlet energy level and the excited triplet energy level is 0.20 eV or less as a second component, and a fluorescent material as a third component, and has a high light emission efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.