Semiconductor device

Details Semiconductor device Semiconductor device

1987-12-23

1990-01-09

James, Andrew J.

357 13, 357 234, 357 238, 357 35, 357 41, 357 43, 357 51, H01L 2978, H01L 2702, H01L 2972

Patent

active

048931578

ABSTRACT:
A protective circuit consisting of a resistor and MOSFET in a diode form and a switching element are connected to a bonding pad in order to prevent destruction of an internal circuit consisting of one or more MOSFETs. The switching element may consist of a parasitic MOSFET whose source and drain regions are formed by well regions. One of the well regions is connected to a semiconductor region as a guard ring.

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patent: 4527213 (1985-07-01), Ariizumi
patent: 4656492 (1987-04-01), Sunami et al.
patent: 4733285 (1988-03-01), Ishioka et al.

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