发明名称 |
Method for producing color-converting light-emitting device using electrophoresis |
摘要 |
A method for producing a color-converting light-emitting device is provided that can prevent the deposition of elements caused by ion migration during an electrophoresis process used to deposit a phosphor layer on the light emitting device. An anode and a light-emitting device having a semiconductor light-emitting element are disposed in a solution in which phosphor particles are dispersed. An auxiliary cathode can be disposed between the light-emitting device and the anode. A DC voltage can be applied between one electrode of the light-emitting device and the anode so that the electrical potential of the electrode is lower than that of the anode, thereby moving the particles to a surface of the semiconductor light-emitting element and allowing them to deposit thereon. The electrical potential of the auxiliary cathode is maintained lower than that of the surface of the semiconductor light-emitting element. In this manner, cations dissolved from metallic regions of the light-emitting device can be attracted to the auxiliary cathode and prevented from being deposited on a surface of the light emitting device.
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申请公布号 |
US7504272(B2) |
申请公布日期 |
2009.03.17 |
申请号 |
US20070935103 |
申请日期 |
2007.11.05 |
申请人 |
STANLEY ELECTRIC CO., LTD. |
发明人 |
AJIKI SHUICHI;KASHIMA TOSHINOBU;AKAGI TSUTOMU |
分类号 |
H01L21/00 |
主分类号 |
H01L21/00 |
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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