Organic electroluminescent device
US10505118B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 1, 2015 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Feb 20, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/171
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to an OLED, comprising an anode, a cathode, and an organic layer, the organic layer at least contains one or more layers containing light emitting layer from the hole injection layer, hole transport layer, electron injection layer, electron transport layer, light emitting layer; the light emitting layer is a host guest doping system composed of host materials and guest materials. The light-emitting zone of the light emitting layer is blue 440-490 nm, and the host material or guest material has a structure with the formula (I). The OLED has the advantages of excellent light emitting efficiency, excellent color purity and long lifetime.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.