Electrochromic display devices comprising substituted fluorene compounds
US4139276A · kind A · utility
28Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1978 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Mar 27, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1503
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Electrochromic display devices having very desirable stability and reversibility are obtained using as the oxidant certain fluorene compounds substituted with at least two alkoxy groups per molecule. The display device comprises a reactive medium between two electrically conductive electrodes at least one of which is transparent. The reactive medium comprises an anhydrous solvent and an oxidant/reductant pair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.