Organic EL element and organic EL display panel
US10665806B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2019 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Mar 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
An organic EL element includes an anode, a cathode opposing the anode, a light-emitting layer disposed between the anode and the cathode, an electron transport layer disposed in contact with a cathode-side surface of the light-emitting layer, and an electron injection layer disposed between the electron transport layer and the cathode, in contact with the electron transport layer. A difference between the lowest unoccupied molecular orbital (LUMO) level of the light-emitting layer and the LUMO level of the electron transport layer is at least 0.5 eV. The film thickness of the electron injection layer is greater than the film thickness of the electron transport layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.