Polymeric fluorescent substance and polymer light-emitting device using the same
US7244515B2 · kind B2 · utility
3Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Mar 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymeric fluorescent substance showing fluorescence in the solid state, having a polystyrene reduced number-average molecular weight of 103 to 108, and comprising one or more repeating units of formula (1) and one or more repeating units of formula (2) which is different from formula (1),exhibits strong fluorescence and/or excellent charge transporting property, and a high performance polymer LED which can be driven at low voltage and high efficiency is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.