Darlington-connected semiconductor device

Details Darlington-connected semiconductor device Darlington-connected semiconductor device

1987-04-21

1990-06-05

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307280, 307300, 357 46, H03K 333, H01L 2702

Patent

active

049316664

ABSTRACT:
A Darlington-connected transistor circuit includes a drive stage transistor and an output stage transistor embodied in a semiconductor substrate having first and second elements in which the drive and output stage transistors are respectively disposed. The first element of the substrate has a shorter lifetime than the second substrate element, permitting higher switching speed to be achieved without affecting other characteristics of the circuit. The shorter lifetime can result from use of different semiconductor substrate materials or from selective diffusion of a lifetime killer.

REFERENCES:
patent: 4058825 (1977-11-01), Bonis et al.
patent: 4138690 (1979-02-01), Nawa et al.
patent: 4482811 (1984-11-01), Quoirin
patent: 4590395 (1986-05-01), O'Connor et al.
patent: 4649297 (1987-03-01), Vazehgoo
"Physics of Semiconductor Devices", S. M. Sze, John Wiley & Son Inc. 1987 p. 175, Copy Corp. 250.

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