Organic EL display device including anomalous dispersion layer
US7538487B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2006 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Nov 15, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/186
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a display device which quenches ambient light by using only an optical interference effect without additionally using an optical filter such as a color filter, and can provide good visibility out of doors in the daylight. The display device includes a plurality of organic EL elements each having a light extraction electrode, a reflective electrode, and a plurality of organic compound layers disposed between the electrodes, wherein the plurality of organic EL elements include at least organic EL elements which emit a red light, a green light, and a blue light, respectively; a layer comprised of a material having anomalous dispersion is disposed at a location which is on a light extraction side with respect to the reflective electrode in each of the plurality of organic EL elements; and an ambient light reflectance of the display device shows a minimal in a region of 535 nm or more and 575 nm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.