Electro luminescent element
US6777111B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2000 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Oct 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order to provide an electro luminescent element with high heat endurance and low crystallinity using functional molecules having functions of hole transporting, luminescence, and electron transporting, an electro luminescent element according to the present invention comprises one or more organic compound layers 14 between a first electrode 12 and a second electrode 16, wherein at least one of the organic compound layers 14 is a condensed ring compound derivative represented by the following chemical formula, in which A1 and A2 represent substituents, B1 through B6 represent directly connected or di functional substituents, and R1 and R2 represent functional units having each of the functions of hole transporting, luminescence, and electron transporting, such as triphenylamine, coumarin, and oxadiazole derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.