Method of fabricating organic light emitting diode
US6489174B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Oct 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/236
Abstract
A method of fabricating an organic light emitting diode. A fluid is sprayed from a nozzle to dissolve organic material or a water-soluble material to be removed from a multi-layer structure of organic luminescent layer, hole transport layer, hole injection layer, electron transport layer and electron injection layer on a substrate. Using an air venting or pumping system such as a vacuum system, the dissolved organic or water-soluble material is removed. The multi-layer structure of organic luminescent layer, hole transport layer, hole injection layer, electron transport layer and electron injection layer can be patterned. After patterning, a step of encapsulation is performed. Thereby, the multi-layer structure is wrapped insulated from oxygen and water. The possibility for the cathode to react with oxygen or water molecules is reduced, and the device lifetime is effectively increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.