Organic electroluminescence device with carrier transport multilayered body and organic electroluminescence display
US7045953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2005 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Feb 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/633
Abstract
An organic EL device includes a transparent substrate (31), an anode (32), a hole injection layer (33), a hole transport layer (34), an luminescent layer (35), an electron transport multilayered body (36), a cathode-side electron transport layer (37), and a cathode (38) formed on the substrate (31) in that order. The electron transport multilayered body (36) includes alternate layered two kinds of electron transport layers (36A, 36B) having electron affinities that are different from each other. Increasing the amount of electron current injected from the cathode (38) for balancing with the amount of hole current, and enhancing luminous efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.