Organic EL devices
US7854998B2 · kind B2 · utility
5Cited by
0References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2005 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Mar 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/6576
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present organic EL devices have at least one luminescent layer and a cathode sequentially provided on their anode, which luminescent layer contains an electron-transporting material, a hole-transporting material, and a luminescent dopant. Preferably, an electron-transporting layer is further provided between the luminescent layer and the cathode. According to the present invention, organic EL devices can be provided giving improved whiteness, colour reproducibility, luminescent efficiency, and lifetime compared to conventional ones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.