Optical semiconductor device
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United States of America Patent
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Oct 7, 2014
Grant Date -
Jul 3, 2014
app pub date -
Dec 18, 2013
filing date -
Dec 28, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An optical semiconductor device of one embodiment includes: a first semiconductor layer of a first conductivity type; an active layer provided on the first semiconductor layer and has a ring- or disk-like shape; a second semiconductor layer of a second conductivity type that is provided on the active layer and has a ring- or disk-like shape; a first electrode provided on the first semiconductor layer; and a second electrode provided on the second semiconductor layer. The first semiconductor layer includes a first region having a ring- or disk-like shape, and a second region provided around the outer circumference of the first region and has a smaller thickness than the first region. The first electrode is provided on the second region, and a groove or holes are provided in a portion of the second region located between the first region and the first electrode.
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