Organic electroluminescence device
US5317169A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1992 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Apr 1, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/6565
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an organic electroluminescence device having a light emitting layer or a light emitting layer and a charge transport layer disposed between a pair of electrodes at least one of which is transparent or semi-transparent, the light emitting layer comprising a conjugated polymer having a repeating unit represented by the general formula (1): EQU --Ar.sub.1 --CH.dbd.CH-- (1) where Ar.sub.1 represents an aromatic hydrocarbon group having 6 to 14 carbon atoms or a nuclear-substituted group in which the aromatic hydrocarbon group is substituted by one or two selected from the group consisting of hydrocarbon groups having 1 to 22 carbon atoms and alkoxy groups having 1 to 22 carbon atoms. According to the present invention, the use of a polymer intermediate of the conjugated polymer or the conjugated polymer soluble to a solvent as a light emitting material, a charge transport material or a buffer layer to an electrode enables an EL device having a large area to be easily made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.