Organic electroluminescent element, material for organic electroluminescent element, and light emitting device, display device and lighting device each using organic electroluminscent element
US9876175B2 · kind B2 · utility
2Cited by
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16Claims
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Key dates
| Filing date | Aug 6, 2012 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | May 14, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/11
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic electroluminescent element including a substrate, a pair of electrodes including an anode and a cathode, disposed on the substrate, and at least one organic layer including a light emitting layer, disposed between the electrodes, in which a compound represented by the following formula (I) is contained in any layer of the at least one organic layer. The organic electroluminescent element has high luminous efficiency and a strong effect of improving the durability by driving aging:wherein X, A1, A2, A3, A4, and R1 to R8 are as defined herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.