Organic electoluminescent device with inorganic insulating hole injecting layer
US6222314A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jan 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/17
Abstract
An organic EL device has a hole injecting electrode, an electron injecting electrode, an organic layer between the electrodes, and an inorganic insulating hole injecting layer between the hole injecting electrode and the organic layer. The inorganic insulating hole injecting layer contains silicon oxide or germanium oxide or a mixture thereof as a main component, and the main component is represented by (Si.sub.1-x Ge.sub.x)O.sub.y wherein 0.ltoreq.x.ltoreq.1 and 1.7.ltoreq.y.ltoreq.2.2. The hole injecting layer further contains Cu, Fe, Ni, Ru, Sn, Au or a mixture thereof, The device has advantages including a long lifetime, improved efficiency, low operating voltage, and low cost, and is suited for use as high-performance flat-panel color displays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.