Light triggered triac device and method of driving the same
AssigneeKabushiki Kaisha Toshiba
InventorsYasunori Usui, Shinjiro Yano
Life of this patent
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Abstract
Disclosed is a semiconductor device comprising an output Triode AC switch with a vertical structure, which is provided in a silicon substrate and has a gate, a first output terminal and a second output terminal, and an input/driving photo Triode AC switch, which is provided in the substrate and has a light-receiving portion, a first terminal connected to the gate and a second terminal connected to the second output terminal. The output Triode AC switch with a vertical structure is turned on when light is input to the photo Triode AC switch.
Claims7
A semiconductor device comprising:
- a semiconductor substrate;
- an output Triode AC switch provided in said substrate, said output Triode AC switch having a gate, a first terminal and a second terminal, and having a vertical structure;
- and
- an input/driving Triode AC switch provided in said substrate and having a light-receiving portion, a third terminal connected to said gate of said output Triode AC switch and a fourth terminal connected to said first terminal of said output Triode AC switch.
A semiconductor device comprising:
- a semiconductor substrate having a top surface and a back surface;
- a first Triode AC switch provided in said substrate, said first Triode AC switch having a first terminal provided on said top surface of said substrate, a gate provided on said top surface of said substrate and a second terminal provided on said back surface of said substrate;
- and
- a second Triode AC switch provided in said substrate, and having a third terminal provided on said top surface of said substrate connected to said gate and a fourth terminal provided on said top surface of said substrate connected to said second output terminal, said second Triode AC switch being triggered by received light.
A method of driving a semiconductor device comprising a semiconductor substrate, an output Triode AC switch with a vertical structure, provided in said substrate and having a gate, a first terminal and a second terminal, and an input/driving Triode AC switch provided in said substrate and having a light-receiving portion, a third terminal connected to said gate of said output Triode AC switch and a fourth terminal connected to said first terminal thereof, said method comprising the steps of:
- applying an AC voltage between said first and second terminal of said output Triode AC switch;
- and
- irradiating light onto said light-receiving portion of said input/driving Triode AC switch.
Dependencies are inferred from the claim text.