发明名称 |
Light-emitting diode device |
摘要 |
A LED device which has an excellent color rendering property and no toxicity and does not bring about an increase in production cost more than necessary, and a covering member used for such a LED device can be provided. The white LED device comprises a light-emitting element for emitting light of blue to green region and a fluorescent substance containing a red phosphor for converting a wavelength of the light emitted from the light-emitting element. The red phosphor is CaS or activated by Eu or a phosphor expressed by a general formula AEu(1-x)LnxB2O8 wherein A is an element selected from the group consisting of Li, K, Na and Ag; Ln is an element selected from the group consisting of Y, La and Gd; and B is W or Mo; and x is number equal to or larger than 0, but smaller than 1.
|
申请公布号 |
US2001050371(A1) |
申请公布日期 |
2001.12.13 |
申请号 |
US20010805461 |
申请日期 |
2001.03.14 |
申请人 |
ODAKI TSUTOMU;TASAKI MASUTSUGU;ICHIKAWA AKIRA;TAKAGI KAZUHISA;HASHIMOTO KAZUAKI |
发明人 |
ODAKI TSUTOMU;TASAKI MASUTSUGU;ICHIKAWA AKIRA;TAKAGI KAZUHISA;HASHIMOTO KAZUAKI |
分类号 |
G02F1/1335;G02F1/13357;H01L33/32;H01L33/50;H01L33/52;(IPC1-7):H01L33/00 |
主分类号 |
G02F1/1335 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|