MOS semiconductor device having a surge protecting element

Details MOS semiconductor device having a surge protecting element MOS semiconductor device having a surge protecting element

Filed on

1991-07-12

Date issued

1993-04-20

Examiner

Munson, Gene M.

Patent Class

Active solid-state devices (e.g., transistors, solid-state diode

SubClass

Field effect device

SubSubClass

Having insulated electrode

Other Related Categories

257603, 257 49, H01L 2978, H01L 2904, H01L 2990

Type

Patent

Status

active

Patent number

052049884

Description

ABSTRACT:
A MOS semiconductor device having a surge protecting circuit comprising a semiconductor substrate having a major surface, a plurality of electrodes overlying the major surface, a MOS circuit in the major surface, and a bidirectional semiconductor surge absorber coupled between the gate of the MOS circuit and a reference electrode contacting the major surface of the substrate. In another embodiment, the MOS semiconductor device further comprises a bidirectional Zener diode connected in series with the bidirectional semiconductor surge absorber.

REFERENCES:
patent: 4831424 (1989-05-01), Yoshida et al.
patent: 5012317 (1991-04-01), Rountre
patent: 5025298 (1991-06-01), Fay et al.
patent: 5027251 (1991-06-01), Hirota et al.
patent: 5077591 (1991-12-01), Chen et al.

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