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Abstract

A semiconductor device is disclosed which improves the breakdown voltage of a planar-type junction edge terminating structure. The device includes an n-type semiconductor substrate layer common to an active section and an edge terminating section. An n-type drift region is formed selectively on the n-type semiconductor substrate layer in the active section and a p-type partition region is formed selectively on the n-type semiconductor substrate layer in the active section. A p-type base/body region is formed on the n-type drift region and the partition region. A source electrode is connected electrically to the p-type base/body region. A p-type partition region is formed in the edge terminating section between the p-type base/body region and the scribe plane of the semiconductor device such that the p-type partition region in the edge terminating section surrounds the p-type base/body region. A drain electrode is connected electrically to the n-type semiconductor substrate layer.

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First Claim