Light-emitting element, light-emitting device
US12289936B2 · kind B2 · utility
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1References
20Claims
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Key dates
| Filing date | Sep 30, 2019 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Jan 29, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-emitting element includes a first light-emitting layer including a first quantum dot and a second light-emitting layer including a second quantum dot provided between the cathode electrode and an anode electrode in order from the cathode electrode, the first quantum dot has a core-shell structure including a first core and a first shell, the second quantum dot has a core-shell structure including a second core and a second shell, and an energy level at a lower end of a conduction band of the first core is higher than an energy level at a lower end of a conduction band of the second core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.