发明名称 |
PREPARATION OF WHITE LIGHT EMITTING DIODE USING A PHOSPHOR |
摘要 |
The present invention relates to a method for preparing a white light emitting diode (LED) using phosphors, especially to a white light emitting diode prepared by applying a tri-color phosphor material mixture of red, blue and green on a UV LED chip made of a packaging substrate, where white light is obtained by transmitting light through the tri-color phosphor mixture since the UV LED chip emits purple light. In particular, the present invention relates to a white light emitting diode prepared by laminating green and red or yellow and red phosphor materials on a blue LED chip, where white light is obtained as light is transmitted and absorbed by the phosphors. The method in accordance with the present invention is advantageous in that a white light emitting diode having superior photoluminescence efficiency can be provided using a single chip. |
申请公布号 |
EP1878063(A4) |
申请公布日期 |
2009.11.11 |
申请号 |
EP20060757533 |
申请日期 |
2006.04.25 |
申请人 |
KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY |
发明人 |
PARK, JOUNG KYU;KIM, CHANG HAE;KIM, KYUNG NAM;KIM. JAE MYUNG;CHOI, KYOUNG JAE |
分类号 |
C09K11/79;H01L33/50;C09K11/80;C09K11/84;H01L33/62;H05B33/14 |
主分类号 |
C09K11/79 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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