Method of making schottky diode with guard ring

Details Method of making schottky diode with guard ring Method of making schottky diode with guard ring

1993-01-21

1995-05-23

Fourson, George

Fishing, trapping, and vermin destroying

437176, 257484, 148DIG139, 148DIG140, H01L 2991, H01L 2122

Patent

active

054181852

ABSTRACT:
A Schottky diode circuit 20 is formed on a semiconductor layer 24. A conductive contact 36 on the surface of the semiconductor layer 24 forms a Schottky barrier 40 at the junction of the conductive contact 36 and the semiconductor layer 24. A guard ring 26 in the semiconductor layer 24 is adjacent to the Schottky barrier 40 and is separated from the conductive contact 36 by a portion of the semiconductor layer 24. No direct electrical path exists between the guard ring 26 and the conductive contact 36.

REFERENCES:
patent: 4607270 (1986-08-01), Iesaka
patent: 4862244 (1989-08-01), Yamagishi
patent: 4874714 (1989-10-01), Eklund

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