Organic electroluminescence device
US11302875B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2019 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Sep 6, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/19
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is an organic electroluminescence device including an anode, a cathode, at least two light-emission sub-stacks and a charge generation layer. The charge generation layer is located between the light-emission sub-stacks, and the charge generation layer includes a stack of a n-type charge generation layer and a p-type charge generation layer. The n-type charge generation layer includes a Compound of Formula 1 and a Compound of Formula 2. The present organic electroluminescence device improves injection and transport properties of electrons to lower driving voltage of the device, improves efficiency and lifespan of the device, and has excellent thermal/electrical stability for long driving duration of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.