Organic electroluminescence device having at least an a node, a hole injection layer, a first hole transport layer. A second hole transport layer a luminous layer, an electron transport layer, and a cathode
US10276800B2 · kind B2 · utility
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17References
9Claims
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Key dates
| Filing date | Nov 12, 2015 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Nov 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides an organic EL device having at least an anode, a hole injection layer, a first hole transport layer, a second hole transport layer, a luminous layer, an electron transport layer, and a cathode in order of description. The second hole transport layer includes an arylamine compound having a specific structure, and the electron transport layer includes a pyrimidine derivative having a specific structure. The organic EL device of the present invention has a high efficiency, a low driving voltage, and a longer life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.