Organic electroluminescent element, material for positive hole injecting layer, and organic electroluminescent display
US7250227B2 · kind B2 · utility
1Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2005 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Jul 29, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31515
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to highly reliable organic EL elements that can provide higher luminance with lower voltage and exhibit lower leak current at negative biases and appropriate diode properties. The organic EL element comprises a positive hole injecting layer, and a perfluoropolyether compound is incorporated into the positive hole injecting layer. Preferably, the perfluoropolyether compound is expressed by formula (1) or (2),R1—Rf—R2 formula (1)Rf—R3 formula (2)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.