| US 7,541,734 B2 | ||
| Light emitting device having a layer with a metal oxide and a benzoxazole derivative | ||
| Shunpei Yamazaki, Setagaya (Japan); Junichiro Sakata, Atsugi (Japan); Hisao Ikeda, Atsugi (Japan); Yasuo Nakamura, Machida (Japan); and Keiko Saito, Atsugi (Japan) | ||
| Assigned to Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken (Japan) | ||
| Filed on Sep. 23, 2004, as Appl. No. 10/947,316. | ||
| Claims priority of application No. 2003-346053 (JP), filed on Oct. 03, 2003. | ||
| Prior Publication US 2005/0073247 A1, Apr. 07, 2005 | ||
| Int. Cl. H01J 63/04 (2006.01); H01J 1/62 (2006.01) | ||
| U.S. Cl. 313—503 [313/483; 313/498; 313/500; 313/501; 313/504; 313/505] | 7 Claims |
| 1. A light-emitting device comprising:
a first light-emitting element that emits red light;
a second light-emitting element that emits green light;
a third light-emitting element that emits blue light;
a color filter,
wherein the color filter comprises a first coloring layer that selectively transmits red light, a second coloring layer that
selectively transmits green light, a third coloring layer that selectively transmits blue light, and a shielding film,
wherein the first to third light-emitting elements respectively correspond to the first to third coloring layers,
wherein the first to third light-emitting elements are separated by a partition,
wherein the shielding film is overlapped with the partition,
wherein each of the first to third light-emitting elements has a first electrode, an electroluminescent layer formed on the
first electrode, and a second electrode formed on the electroluminescent layer, and
wherein the electroluminescent layer includes a layer in contact with the second electrode, and a metal oxide and a benzoxazole
derivative is included in the layer in contact with the second electrode.
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