Organic electroluminescent element
US9614166B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2013 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Mar 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, sufficiently secures driving stability, and has a simple construction. The organic electroluminescent device includes, between an anode and cathode laminated on a substrate, a plurality of organic layers. At least one layer of the organic layers contains a carbazole compound represented by the following general formula (1) having two to three structures in each of which a carbazole ring and a dibenzofuran or dibenzothiophene ring are bonded to each other at 1- and 4-positions. In the formula (1), A represents an n-valent aromatic hydrocarbon group or aromatic heterocyclic group, n represents an integer of 2 or 3, and X represents oxygen or sulfur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.