Optically controllable static induction thyristor device
CA 1161572 A · Owner: Handotai Kenkyu Shinkokai · Inventors: Nishizawa, Junichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a semiconductor device and in particular, discloses an optically controllable static induction, thyristor, The thyristor comprises a semiconductor substrate a, pair of main electrode regions formed in at least portions of opposite main surfaces of the substrate. The main electrode regions are of high impurity density of opposite conduction types and at least a portion of the electrode on at least one of the main surfaces is a transparent gate electrode which is provided between the main electrode regions. Means is also provided for irradiating the transparent electrode with light. Thus the, static induction thyristor is controlled optically. The device is used with …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 31, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 2001.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.