Mitsubishi Electric Corporation

Toshiba Electronic Devices & Storage Corporation

The University of Tokyo

Kazuo Itou

Tomoko Matsudai

Kiyoshi Takeuchi

Shinichi Suzuki

Katsumi Satoh

Toshiro Hiramoto

Munetoshi Fukui

Takuya Saraya

Toshihiko Takakura

A semiconductor device includes an emitter layer of a first conductivity type, a collector layer of a first conductivity type, a drift layer of a second conductivity type provided between the emitter layer and the collector layer, an emitter electrode electrically connected to the emitter layer, a collector electrode electrically connected to the collector layer, one or a plurality of emitter-side gate electrodes arranged to face the emitter layer with an emitter-side gate insulating film interposed therebetween, a first high-concentration impurity layer of a second conductivity type provided between the emitter electrode and the emitter layer, the first high-concentration impurity layer having an impurity concentration higher than an impurity concentration of the emitter layer, an impurity layer of a first conductivity type provided between the drift layer and the collector electrode, one or a plurality of collector-side gate electrodes arranged to face the impurity layer with a collector-side gate insulating film interposed therebetween, and a second high-concentration impurity layer of a second conductivity type provided between the collector electrode and the impurity layer and having an impurity concentration higher than that of the impurity layer, in which a total length of a first facing region of the emitter-side gate electrode in a gate width direction, the first facing region facing the emitter layer with the emitter-side gate insulating film interposed therebetween, is longer than a total length of a second facing region of the collector-side gate electrode in a gate width direction, the second facing region facing the impurity layer with the collector-side gate insulating film interposed therebetween.

Semiconductor device

Growing community of inventors

Tokyo, Japan

Kazuo Itou