Organic EL element and organic EL display panel
US10283727B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2017 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Sep 28, 2037 |
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. Lowest unoccupied molecular orbital (LUMO) level of the electron transport layer is lower than at least one of LUMO level of the electron injection layer and Fermi level of a metal material included in the electron injection layer, and film thickness of the electron injection layer is greater than film thickness of the electron transport layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.