| 摘要 |
A high voltage solid-state switch, which allows alternating or direct current operation and provides bidirectional blocking, consists of a first p type semiconductor body (16, 16a) on an n type semiconductor wafer substrate (12). A p+ type anode region (18, 18a) and an n+ type cathode region (24, 24a) exist in portions of the semiconductor body (16, 16a). A second p type region (22, 22a) of higher impurity concentration than the semiconductor body (16, 16a) encircles the cathode region (24, 24a). The anode region (18, 18a) and second p type region (22, 22a) are separated from each other by a portion of the semiconductor body (16, 16a). The semiconductor wafer substrate (12), which acts as a gate, is adapted to allow low resistance contact thereto. Separated low resistance contacts are made to the anode region (18, 18a) and to the cathode region (24, 24a). |
