Light-emitting device, method of fabricating the device, and LED lamp using the device
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United States of America Patent
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May 9, 2006
Grant Date -
Sep 30, 2004
app pub date -
Dec 22, 2003
filing date -
Dec 20, 2002
priority date (Note) -
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Abstract
A semiconductor light-emitting device has a substrate (1), a semiconductor layer (3) and a light-emitting layer (5), and the substrate is furnished on the surface thereof underlying the semiconductor layer with an irregular construction possessing inclined lateral surfaces forming an angle .theta. to the substrate in the range of 30.degree.<.theta.<60.degree., to provide a light-emitting device enhanced in the effect of fetching light.
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