Organic electroluminescence element having concentration variation of hole transporting light-emitting material
US8106581B2 · kind B2 · utility
2Cited by
1References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 23, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | May 6, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/917
Abstract
An organic electroluminescence element including an organic layer including a light-emitting layer disposed between a pair of electrodes, wherein the light-emitting layer contains at least one hole transporting light-emitting material and at least one electron-transporting host material, and a concentration of the hole transporting light-emitting material in the light-emitting layer decreases from an anode side toward a cathode side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.