Organic el element, organic el panel, organic el light-emitting apparatus, organic el display apparatus, and method of manufacturing organic el element
US9490445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2013 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | May 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic EL element includes a hole injection layer that yields excellent hole conduction efficiency. The organic EL element includes an anode, a cathode, and functional layers that include organic material between the anode the cathode. The functional layers include a hole injection layer that injects holes into the functional layers. The hole injection layer is a metal oxide film that includes a metal oxide. The metal atoms constituting the metal oxide include both metal atoms at a maximum valence thereof and metal atoms at a valence less than the maximum valence, and the metal oxide film includes metal oxide crystals having a particle diameter on the order of nanometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.