Fluorene-based alternating copolymers for electroluminescence element and electroluminescence element using such copolymers as light emitting materials
US5807974A · kind A · utility
85Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Nov 26, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a fluorene-based alternating copolymer to be used as light emitting materials of electroluminescent elements having the following formula (I), and further relates to electroluminescent elements having an anode/luminescent layer/cathode structure, in which the fluorene-based alternating copolymer used as light emitting materials of the luminescent layer, or having a transporting and/or reflection layer added thereto, if necessary, is ##STR1## where R, R', X, Ar and n are defined in the text.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.