Light-emitting element having metal oxide and light-emitting device using the same
US7605534B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2004 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Sep 1, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
Abstract
It is an object of the invention is to provide a light-emitting element in which failure of the light-emitting element due to separation can be controlled and stable luminescence can be obtained with high-efficiency and for a long stretch of time by controlling separation of layers constituting the light-emitting element. According to one aspect of a light-emitting element of the invention, the light-emitting element sandwiches a plurality of layers between a pair of electrodes, wherein at least one layer of the plurality of layers is a layer containing a substance selected from bismuth oxide, cobalt oxide, chromium oxide, copper oxide, nickel oxide, and titanium oxide, or at least one layer of layers different from a light-emitting layer among the plurality of layers is a mixed region of one substance selected from bismuth oxide, cobalt oxide, copper oxide, magnesium oxide, nickel oxide, zinc oxide, and titanium oxide and an organic compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.