Semiconductor switching device

Details Semiconductor switching device Semiconductor switching device

1975-02-21

1977-02-08

Lynch, Michael J.

357 64, H01L 29747

Patent

active

040074757

ABSTRACT:
The present invention relates to switching devices integrated into a single semi-conductor block and constituted by a thyristor and a diode, their cathodes and anodes being connected head-to-tail in parallel.
In accordance with the invention, unwanted diffusion into the thyristor section (16) (17), of minority charge carriers coming from the diode section (7)(11), is prevented by the interposition of an insulating layer (31) beneath the connection M linking the anode of the diode with the cathode of the thyristor, this having the effect of limiting the lines of current flow through the diode, to the contour (10).
The applications are to be found in particular in the field of scanning devices for cathode-ray tubes.

REFERENCES:
patent: 3123750 (1964-03-01), Hutson et al.
patent: 3590346 (1971-06-01), Bilo et al.
patent: 3727116 (1973-04-01), Thomas et al.

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