Oblon, McClelland, Maier & Neustadt, L.L.P.
Semiconductor device
A semiconductor device includes a semiconductor body, first to third electrodes provided on the semiconductor body, and a control electrode. The control electrode is provided between the semiconductor body and the first electrode. The semiconductor body includes first to sixth layers. The second layer of a second conductivity type is selectively provided between the first layer of a first conductivity type and the first electrode. The third layer of the first conductivity type is selectively provided between the second layer and the first electrode. The fourth layer of the second conductivity type is provided between the first layer and the second and third electrodes. The fifth layer of the first conductivity type is selectively provided in the fourth layer and electrically connected to the first electrode. The sixth layer of the first conductivity type is provided in the fourth layer, and electrically connected to the third electrode.
KABUSHIKI KAISHA TOSHIBA TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
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Hisao Hiroaki Syotaro
Ichijo Yamashita Ono