Organic electroluminescent element
US6180217A · kind A · utility
13Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1998 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Mar 16, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
Abstract
An organic electroluminescent element having excellent durability with increased luminescence intensity, low luminescence starting voltage, and excellent stability with repeated use. An organic electroluminescent element having at least a positive electrode, hole-injection layer, hole-transporting layer, luminescent layer, and negative electrode, wherein the positive electrode has an ionization potential of 5.18-5.35 eV, the hole-injection layer has an ionization potential of 4.80-5.18 eV, and the hole-transporting layer has an ionization potential of 5.20-5.70 eV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.