Organic electroluminescence device and aromatic compound for organic electroluminescence device
US11985893B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2020 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Mar 6, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode and containing an aromatic compound, wherein the aromatic compound includes a benzene ring, two unsubstituted carbazole groups directly bonded to the benzene ring, two substituted carbazole groups directly bonded to the benzene ring and each substituted with a nitrogen-containing ring group, and a substituent directly bonded to the benzene ring and selected from a cyano group, a fluorine, or a C1-C10 alkyl group substituted with a fluorine. The organic electroluminescence device may obtain good luminous efficiency and long life (long lifespan) characteristics while emitting blue light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.