Organic electroluminescent device
US11158811B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 1, 2015 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Aug 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/6574
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In the organic electroluminescent device having at least an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole injection layer includes an arylamine compound of the following general formula (1) and an electron acceptor. In the formula, Ar1 to Ar4 may be the same or different, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.