Organic light-emitting element and light-emitting device using the same
US8188500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2009 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Feb 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
Abstract
An organic light-emitting element includes a first electrode, a second electrode, and at least one organic compound layer disposed between the first electrode and the second electrode. The organic compound layer includes a light-emitting layer containing a light-emitting material and being configured to emit light toward the first electrode and the second electrode. The light emitted toward the first electrode is reflected from a reflection plane located at the first electrode to cause interference with the light emitted toward the second electrode. The interference provides an interference intensity distribution having a maximum peak at a wavelength λ1. The light-emitting material of the light-emitting layer exhibits a photoluminescence spectrum having a maximum peak at a wavelength λ2. The organic light-emitting element produces an electroluminescence spectrum having a maximum peak at a wavelength λ3. These wavelengths satisfy the relationships: λ2≠λ3 and |λ2−λ3|<|λ2−λ1|.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.