Multi-directional light scattering LED and manufacturing method thereof
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United States of America Patent
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Jan 13, 2009
Grant Date -
Oct 25, 2007
app pub date -
Apr 24, 2006
filing date -
Apr 24, 2006
priority date (Note) -
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Abstract
A multidirectional light scattering LED and a manufacturing method thereof are disclosed. A metal oxide is irregular disposed over a second semiconductor layer and then is removed by etching. Part of the second semiconductor layer, part of a light-emitting layer or part of the first semiconductor layer is also removed so as to form a scattering layer. A transparent conductive layer is arranged over the second semiconductor layer while further a second electrode is disposed over the transparent conductive layer. A first electrode is installed on the scattering layer. Thus light output from the LED is scattered in multi-directions.
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