Semiconductor device
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United States of America Patent
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Aug 22, 2017
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N/A
app pub date -
Sep 4, 2015
filing date -
Mar 16, 2015
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Abstract
According to one embodiment, a semiconductor device includes a first electrode, a second electrode, a first semiconductor region, a second semiconductor region, a third semiconductor region, and a fourth semiconductor region. The first semiconductor region is provided between the first and second electrodes. The second semiconductor region is provided between the first semiconductor region and the second electrode. The third semiconductor region is provided between the first semiconductor region and the second electrode, is provided beside the second semiconductor region in a second direction crossing a first direction from the first electrode toward the second electrode, and a portion of the first semiconductor region is positioned between the third and second semiconductor regions. The fourth semiconductor region is provided between the portion of the first semiconductor region and the second electrode and has a greater impurity concentration than the second and third semiconductor regions.
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