| 发明名称 |
Lighting device comprising at least two organic luminescent materials |
| 摘要 |
The invention provides a lighting device (100) comprising a light source (10) and luminescent materials (20). The luminescent materials (20) comprise a first organic luminescent material (120) and a second organic luminescent material (220), the light source (10) together with the luminescent materials (20) being configured to generate white lighting device light (101) during operation. The first organic luminescent material (120) degrades with time at a first degradation rate and the second organic luminescent material (220) degrades with time at a second degradation rate, wherein the first degradation rate is larger than the second degradation rate. The first organic luminescent material is configured in a first layer (130, 1020) and the second organic luminescent material is configured in a second layer (140, 1220). The first layer and/or the second layer is further configured to at least partly compensate for the difference in the first degradation rate and the second degradation rate in order to maintain the lighting device light (101) substantially white during operation time of the lighting device (100). |
| 申请公布号 |
US2015054401(A1) |
申请公布日期 |
2015.02.26 |
| 申请号 |
US201314388937 |
申请日期 |
2013.03.22 |
| 申请人 |
HIGH TECH CAMPUS 5 |
发明人 |
Van Bommel Ties;Hikmet Rifat Ata Mustafa;Wegh René Theodorus;Peeters Martinus Petrus Joseph;Van Dreumel Gerardus Wilhelmus Gerbe;Casper Lars Christian |
| 分类号 |
F21K99/00 |
主分类号 |
F21K99/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
1. A lighting device comprising a light source and luminescent materials, the luminescent materials comprising a first organic luminescent material and a second organic luminescent material, wherein the light source together with the luminescent materials is configured to generate white lighting device light during operation, wherein the first organic luminescent material degrades with time at a first degradation rate, wherein the second organic luminescent material degrades with time at a second degradation rate, wherein the first degradation rate is larger than the second degradation rate, characterized in that the first organic luminescent material is configured in a first layer, that the second organic luminescent material is configured in a second layer, and that the first layer and/or the second layer is further configured to at least partly compensate for the difference in the first degradation rate and the second degradation rate in order to maintain the lighting device light substantially white during operation time of the lighting device and wherein the first layer is enclosed by an oxygen barrier. |
| 地址 |
EINDHOVEN NL |
