Organic electroluminescence element
US7847479B2 · kind B2 · utility
2Cited by
0References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2008 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Dec 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescence element including an organic layer including a light-emitting layer between a pair of electrodes, wherein the light-emitting layer contains at least two light-emitting materials having different Ea values and at least one host material, a concentration of a light-emitting material having a larger Ea value in the light-emitting layer gradually decreases from a cathode side toward an anode side, and a concentration of a light-emitting material having a smaller Ea value in the light-emitting layer gradually decreases from the anode side toward the cathode side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.