Organic electroluminescent device
US6303239A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Feb 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/8052
Abstract
An object of the invention is to achieve an organic EL device which has an extended life, weather resistance, high stability, and high efficiency, and is inexpensive as well. This object is accomplished by the provision of an organic EL device comprising a substrate, a pair of a hole injecting electrode and a cathode formed on the substrate, and an organic layer located between these electrodes and taking part in at least a light emission function, wherein between the organic layer and the cathode there is provided an inorganic insulating electron injecting and transporting layer comprising a first component comprising at least one oxide selected from the group consisting of lithium oxide, rubidium oxide, potassium oxide, sodium oxide and cesium oxide, a second component comprising at least one oxide selected from the group consisting of strontium oxide, magnesium oxide and calcium oxide, and a third component comprising silicon oxide and/or germanium oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.