Light-controllable thyristor

Details Light-controllable thyristor Light-controllable thyristor

H - Electricity

01

L

345/24

H01L 29/74 (2006.01) H01L 31/111 (2006.01) H01L 31/16 (2006.01)

Patent

CA 1053354

ABSTRACT C A N A D A In a light-controllable thyristor, in order to avoid a small-area ignition in the event of inhomogeneous illumination, the photo-current is amplified by means of two auxiliary thyris- tors, it being ensured that the first auxiliary thyristor does not ignite until the two other systems have ignited. This is achieved by relating the effective emitter edge lengths of main thyristor to second auxiliary thyristor and relating the effect- ive emitter boundary length of the second auxiliary thyristor to the area of the region which is to be exposed.

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