Organic light-emitting device and apparatus including the same
US12289987B2 · kind B2 · utility
0Cited by
3References
18Claims
0Family size
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Key dates
| Filing date | Jul 21, 2020 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Sep 1, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An organic light-emitting device in which a hole transport region includes a first hole transport stack, a second hole transport stack between the first hole transport stack and an emission layer, and an electron blocking layer between the second hole transport stack and the emission layer, wherein a HOMO energy level of the hole transport region satisfies a certain equations. The organic light-emitting devices according to embodiments of the present disclosure may have high efficiency and a long lifespan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.