Organic electroluminescence device
US8871359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2005 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Jan 6, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An organic electroluminescence device wherein a light emitting layer exists between electrodes composed of an anode and a cathode, a layer (L) containing a polymer compound exists between the light emitting layer and the anode and the polymer compound contains a repeating unit of formula (1):wherein, Ar1, Ar2, Ar3 and Ar4 represent each independently an arylene group or divalent heterocyclic group; E1, E2 and E3 represent each independently aryl group (A) or heterocyclic group (B); a and b represent each independently 0 or 1, and 0≦a+b≦1; aryl group (A) is an aryl group having three or more substituents; and heterocyclic group (B) is a monovalent heterocyclic group having one or more substituents in which the sum of the number of the substituents and the number of hetero atoms of the heterocycle is 3 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.