SCR-MOS circuit for driving electroluminescent displays

Details SCR-MOS circuit for driving electroluminescent displays SCR-MOS circuit for driving electroluminescent displays

1986-11-06

1988-09-27

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307570, 307631, 307633, 307637, H03K 1756, H03K 1772

Patent

active

047744200

ABSTRACT:
Disclosed is a small-area solid state driver (30) adapted for switching high voltages. The driver (30) includes a DMOS device (48) driving a bipolar SCR (58). A SCR NPN transistor (54) and PNP transistor (56) are parasitic in nature, thus reducing the wafer area of the driver (30). The SCR (58) provides current sink capabilities to the driver output (60). Current source capabilities are provided by a substrate input terminal (50) which is connected to the output (60) by diodes (84, 86). A third input (52) allows the SCR (58) to be disabled.

REFERENCES:
patent: 4551643 (1985-11-01), Russell et al.
patent: 4605872 (1986-08-01), Rung

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