Organic electroluminescent device with high resistance inorganic hole injecting layer
US6373186B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jan 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/17
Abstract
To realize an organic EL device having an excellent hole injection efficiency, improved luminous efficiency, low operating voltage, and low cost, the invention provides an organic EL device comprising a hole injecting electrode, an electron injecting electrode, and at least one organic layer between the electrodes, at least one of the organic layer having a light emitting function. The device further has a high resistance inorganic hole injecting layer between the hole injecting electrode and the organic layer. The high resistance inorganic hole injecting layer is capable of blocking electrons and has conduction paths for carrying holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.