Importance

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Abstract

A semiconductor device includes: a semiconductor substrate; a separation region in the substrate; an embedded layer; a channel forming region; a source region; a drain region; a first electrode for the source region; a second electrode for the channel forming region; a third electrode for the drain region; a trench penetrating the channel forming region between the source region and the drain region; a trench gate electrode in the trench; an offset layer on a portion to be a current path provided by the trench gate electrode; and an electric field relaxation layer under the channel forming region and the offset layer connected to the channel forming region and covering a bottom of the trench.

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First Claim