Organic electroluminescent element, display device, and illuminating device
US8242488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 28, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Nov 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is an organic electroluminescent device having high external quantum efficiency and long emission life and an illuminating device and a display device, each comprising the organic electroluminescent device. The organic electroluminescent device comprises at least an anode and a cathode arranged on a supporting substrate and at least two organic layers, namely a first layer and a second layer, between the anode and the cathode, in which the organic electroluminescent device is characterized in that the first organic layer contains a light emitting dopant and the second organic layer contains a charge-transporting material and a part of the material constituting the first organic layer, and the second organic layer is formed by coating after formation of the first organic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.