Organic electroluminescence element
US8129897B2 · kind B2 · utility
1Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2008 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Jul 26, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/80
Abstract
The present invention provides an organic electroluminescence element having at least a light-emitting layer disposed between a pair of electrodes, wherein the light-emitting layer includes at least two electron transporting materials and a hole transporting host material, with at least one of the electron transporting materials being an electron transporting light-emitting material, and a total concentration of the at least two electron transporting materials in the light-emitting layer decreases from a cathode side toward an anode side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.