| 发明名称 |
LIGHT-EMITTING DEVICE |
| 摘要 |
Provided is a high-efficiency light-emitting device. Further, provided is a light-emitting device with high efficiency and less variation in the color temperature of emitted white light in the case of configuring, for example, a white light-emitting device combining a blue LED and a phosphor layer. The light-emitting device includes a phosphor layer that emits light having a predetermined wavelength, and the phosphor layer contains at least one selected from the group consisting of a phosphor represented by a general formula:;aYO3/2.(3−a)CeO3/2.bAlO3/2.cGaO3/2.fWO3 (2.80≦a≦2.99, 3.00≦b≦5.00, 0≦c≦2.00, 0.003≦f≦0.020, where 4.00≦b+c≦5.00), and a phosphor represented by a general formula: aYO3/2.(3−a)CeO3/2.bAlO3/2.cGaO3/2.gK2WO4 (2.80≦a≦2.99, 3.00≦b≦5.00, 0≦c≦2.00, 0.003≦g≦0.015, where 4.00≦b+c≦5.00). |
| 申请公布号 |
US2014339567(A1) |
申请公布日期 |
2014.11.20 |
| 申请号 |
US201414450044 |
申请日期 |
2014.08.01 |
| 申请人 |
Panasonic Corporation |
发明人 |
OKUYAMA Kojiro;OHBAYASHI Takashi;SHIRAISHI Seigo |
| 分类号 |
C09K11/77;H01L33/32;H01L33/50 |
主分类号 |
C09K11/77 |
| 代理机构 |
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代理人 |
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| 主权项 |
1. A light-emitting device comprising a phosphor layer that emits light having a predetermined wavelength,
wherein the phosphor layer contains at least one selected from the group consisting of a phosphor represented by a general formula: aYO3/2.(3−a)CeO3/2.bAlO3/2.cGaO3/2.fWO3 (2.80≦a≦2.99, 3.00≦b≦5.00, 0≦c≦2.00, 0.003≦f≦0.020, where 4.00≦b+c≦5.00), and a phosphor represented by a general formula:aYO3/2.(3−a)CeO3/2.bAlO3/2.cGaO3/2.K2WO4 (2.80≦a≦2.99, 3.00≦b≦5.00, 0≦c≦2.00, 0.003≦g≦0.015, where 4.00≦b+c≦5.00). |
| 地址 |
Osaka JP |
