Organic electroluminescent device
US7611779B2 · kind B2 · utility
14Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2004 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Nov 16, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hole injection layer, a hole transport layer, a blue light emitting layer, an orange light emitting layer, an electron transport layer, an electron injection layer, and a cathode are formed in this order on an anode. The blue light emitting layer is composed of a host material doped with an assisting dopant and a luminescent dopant emitting blue light. A material used for the hole transport layer is used for the assisting dopant. The orange light emitting layer is composed of a host material doped with a luminescent dopant emitting orange light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.