Indolocarbazole derivatives and organic electroluminescent devices using the same
US11456428B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Jul 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/171
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are indolocarbazole polycyclic aromatic derivatives that can be employed in various organic layers of organic electroluminescent devices. The indolocarbazole derivatives have a boron-containing structure. Also disclosed are organic electroluminescent devices including the indolocarbazole derivatives. The organic electroluminescent devices are highly efficient and long lasting and have greatly improved luminous efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.