| US 7,538,487 B2 | ||
| Organic EL display device including anomalous dispersion layer | ||
| Toshinori Hasegawa, Yokohama (Japan); Hiroshi Matsuda, Isehara (Japan); Masahiro Okuda, Sagamihara (Japan); Masataka Yashima, Tokyo (Japan); Koichi Fukuda, Tokyo (Japan); and Nobutaka Mizuno, Tokyo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Sep. 22, 2006, as Appl. No. 11/534,334. | ||
| Claims priority of application No. 2005-283896 (JP), filed on Sep. 29, 2005; and application No. 2006-250565 (JP), filed on Sep. 15, 2006. | ||
| Prior Publication US 2007/0069641 A1, Mar. 29, 2007 | ||
| Int. Cl. H05B 33/04 (2006.01); H05B 33/10 (2006.01) | ||
| U.S. Cl. 313—504 [313/506] | 5 Claims |
| 2. A display device comprising 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 comprising 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 minimum in a region from 535 nm to 575 nm,
wherein the material having anomalous dispersion comprises tungsten carbide.
|