| 摘要 |
PURPOSE:To obtain excellent turn-ON and turn-OFF characteristics by minute gate power, and to control turn-ON and turn-OFF by an optical signal by adopting amplifying gate structure by separating gate electrodes for the turn-ON and the turn-OFF and forming both gate electrodes in a voltage driving type. CONSTITUTION:When a turn-ON gate electrode G1 is biassed so as to be brought to positive voltage to a layer P2 under the state in which voltage is applied so that an anode A is brought to positive voltage to a cathode K, a channel is formed in the layer P2, a path of a layer P1-N1-the P2 channel-N2 is formed, and the path of the layer P1-N1-P2-N2 is turned ON. When a turn-OFF gate electrode G2 is biassed to negative voltage to the cathode on an ON state, on the other hand, a channel is formed in a layer N2, anode currents flow through the layer P1-N1-P2-the N2 channel-P3, and anode currents are branched from a path of P1-N1-P2-N2. Accordingly, a current component flowing through the path of P1-N1-P2-N2 reduces, and the path is turned OFF when the current component reaches to holding currents or lower. |
