Vertical semiconductor device including element active portion and voltage withstanding structure portion, and method of manufacturing the vertical semiconductor device

Aspects of the invention are directed to a vertical semiconductor device including an element active portion and a voltage withstanding structure portion that has a first main electrode and a gate pad electrode on a first main surface of the element active portion, includes first parallel pn layers...

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Hauptverfasser:	NIIMURA YASUSHI, SAKATA TOSHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY SEMICONDUCTOR DEVICES
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creator	NIIMURA YASUSHI SAKATA TOSHIAKI
description	Aspects of the invention are directed to a vertical semiconductor device including an element active portion and a voltage withstanding structure portion that has a first main electrode and a gate pad electrode on a first main surface of the element active portion, includes first parallel pn layers in a drift layer below the first main electrode, and includes second parallel pn layers below the gate pad electrode. The vertical semiconductor device includes a first conductivity type isolation region between the second parallel pn layers below the gate pad electrode and a p-type well region disposed in a surface layer of the drift layer, and by the repetition pitch of the second parallel pn layers being shorter than the repetition pitch of the first parallel pn layers, it is possible to obtain low on-state resistance, high avalanche withstand, high turn-off withstand, and high reverse recovery withstand.
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subjects	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY SEMICONDUCTOR DEVICES
title	Vertical semiconductor device including element active portion and voltage withstanding structure portion, and method of manufacturing the vertical semiconductor device
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