Efficient organic electroluminescent devices with red fluorescent dopants
US6838194B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jan 20, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescent (EL) device (10) in accordance with the present invention comprises, in sequence, a glass substrate (11), an anode layer (12), a hole-injecting layer (13), a hole-transporting layer (14), an luminescent layer (15), an electron-transporting layer (16), an electron-injecting layer (17) and a cathode layer (18). The luminescent layer (15) is doped with a guest fluorescent doping material, and the guest fluorescent doping material for the luminescent layer (15) comprises a compound represented by Formula I: wherein R1, R2, R3, R4, R5, and R6 each independently represents a linear or branched aliphatic group having from 1 to 10 carbon atoms or an aromatic group having from 5 to 20 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.