| US 7,528,418 B2 | ||
| Light-emitting device | ||
| Shunpei Yamazaki, Tokyo (Japan); Junichiro Sakata, Kanagawa (Japan); Takahiro Kawakami, Kanagawa (Japan); Yoshiaki Yamamoto, Kanagawa (Japan); Miki Katayama, Kanagawa (Japan); Kohei Yokoyama, Kanagawa (Japan); and Yasuyuki Arai, Kanagawa (Japan) | ||
| Assigned to Semiconductor Energy Laboratory Co., Ltd., (Japan) | ||
| Filed on Feb. 16, 2007, as Appl. No. 11/707,414. | ||
| Claims priority of application No. 2006-049322 (JP), filed on Feb. 24, 2006. | ||
| Prior Publication US 2007/0200112 A1, Aug. 30, 2007 | ||
| Int. Cl. H01L 33/00 (2006.01) | ||
| U.S. Cl. 257—96 [257/79; 257/E33.013] | 49 Claims |
| 1. A light-emitting device comprising:
a light-emitting element comprising a plurality of light-emitting units and an intermediate conductive layer between a pair
of electrodes,
wherein each of the plurality of light-emitting units comprises a light-emitting layer including a base material which is
an impurity element and a compound containing an element belonging to group 2 and an element belonging to group 16, and
wherein the plurality of light-emitting units are connected in series with the intermediate conductive layer interposed therebetween.
|