Organic light emitting device
US7595118B2 · kind B2 · utility
2Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2005 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Nov 13, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
An organic light emitting device including a first electrode, a second electrode, and an emission layer arranged between the first electrode and the second electrode, the emission layer comprising at least two electron transport materials adapted to serve as a host and a phosphorescent dopant. The use of at least two electron transport materials as a host facilitates the re-combination of holes and electrons in neighboring organic layers, thus improving the luminous efficiency and the lifetime of the organic light emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.