Importance

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Abstract

A semiconductor device includes a first electrode, a first semiconductor layer of a first conductivity type located on the first electrode, a second semiconductor layer of a second conductivity type located on the first semiconductor layer, a third semiconductor layer of the first conductivity type located on a portion of the second semiconductor layer, a second electrode located in the first semiconductor layer, the second semiconductor layer and the third semiconductor layer, the second electrode extending along and around an outer edge of the first semiconductor layer, and spaced from the second semiconductor layer by an insulating film, a wiring located on the third semiconductor layer and connected to the second electrode, and a third electrode connected to the second semiconductor layer and the third semiconductor layer.

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First Claim