Electroluminescent composition containing organopolysiloxane and electroluminescent device usable as a back-lighting unit for liquid crystal display
US4882517A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1989 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Feb 7, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electroluminescent device of the dispersion type exhibiting high brightness of electroluminescence and having excellent heat resistance and flexibility, and usable as a backlighting unit for liquid crystal displays and as a plane light-emitting body, can be prepared by using, as the matrix material of the particulate electroluminescent material, a specific cyanoalkyl group-containing organopolysiloxane represented by the average unit formula R.sup.1.sub.a R.sup.2.sub.b SiO.sub.(4-a-b)/2, in which R.sup.1 is a cyanoalkyl group having 3 to 5 carbon atoms, R.sup.2 is a monovalent hydrocarbon group, a is 0.8 to 1.8 and b is 0 to 1.0 with the proviso that a+b is 1.1 to 1.98.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.