Method of manufacturing organic EL element
US6727513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2003 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/11
Abstract
The invention ensures that a liquid is placed in a predetermined region (without being placed in an adjacent region) with a uniform thickness in the region, when a light emitting layer constituting an organic EL element is placed by, for example, ink jet process. Thin SiO2 film pattern having an opening is formed on an ITO electrode. Next, ultrathin organic film pattern having an opening is formed on a thin SiO2 film pattern. The surface of the ultrathin organic film pattern becomes repellent to liquid. Hole transporting layer is formed in the opening of the ultrathin organic film pattern, and then liquid containing a material for the formation of light emitting layer is discharged thereon by ink jet process. Fluid does not remain on the surface of the ultrathin organic film pattern and instead enters the opening of the ultrathin organic film pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.