| 发明名称 |
LIGHT EMITTING DEVICE |
| 摘要 |
A light emitting device of an embodiment includes a light emitting element emitting near-ultraviolet light or blue light as exciting light; and a yellow color conversion layer including a yellow phosphor and a resin, the yellow phosphor represented by formula (1) and being capable of converting the exciting light to yellow light, the resin surrounding the yellow phosphor, the yellow color conversion layer containing the yellow phosphor at a volume concentration of at most 7%, the yellow color conversion layer having a region whose cross section parallel to a light emitting surface of the light emitting element has an area larger than the light emitting surface,;(Sr1-x1Cex1)a1AlSib1Oc1Nd1 (1);wherein x1, a1, b1, c1, and d1 satisfy following relations: 0<x1≦0.1, 0.6<a1<0.95, 2.0<b1<3.9, 0<c1<0.45, and 4.0<d1<5.0. |
| 申请公布号 |
US2015318451(A1) |
申请公布日期 |
2015.11.05 |
| 申请号 |
US201514696766 |
申请日期 |
2015.04.27 |
| 申请人 |
Kabushiki Kaisha Toshiba |
发明人 |
ISHIDA Kunio;Albessard Keiko;Hattori Yasushi;Kato Masahiro |
| 分类号 |
H01L33/50;H01L33/56 |
主分类号 |
H01L33/50 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A light emitting device comprising:
a light emitting element emitting near-ultraviolet light or blue light as exciting light; and a yellow color conversion layer including a yellow phosphor and a resin, the yellow phosphor represented by formula (1) and being capable of converting the exciting light to yellow light, the resin surrounding the yellow phosphor, the yellow color conversion layer containing the yellow phosphor at a volume concentration of at most 7%, the yellow color conversion layer having a region whose cross section parallel to a light emitting surface of the light emitting element has an area larger than the light emitting surface,
(Sr1-x1Cex1)a1AlSib1Oc1Nd1 (1) wherein x1, a1, b1, c1, and d1 satisfy following relations: 0<x1≦0.1, 0.6<a1<0.95, 2.0<b1<3.9, 0<c1<0.45, and 4.0<d1<5.0. |
| 地址 |
Minato-ku JP |
