CIRCUIT BOARD AND ELECTRONIC DEVICE
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United States of America Patent
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app pub date -
Oct 27, 2015
filing date -
Oct 27, 2015
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Abstract
Provided is a circuit board which includes a semiconductor substrate, a Zener diode, and a first vertical conductor and a second vertical conductor which configure a paired current path, wherein in the Zener diode, an N-type semiconductor region and a P-type semiconductor region being composed of the semiconductor substrate, with a PN junction extending in the thickness direction of the semiconductor substrate; and the first vertical conductor and the second vertical conductor penetrating the semiconductor substrate in the thickness direction, the first vertical conductor being brought into contact with the N-type semiconductor region, and the second vertical conductor being brought into contact with the P-type semiconductor region.
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