Semiconductor apparatus and protection circuit

Details Semiconductor apparatus and protection circuit Semiconductor apparatus and protection circuit

2005-02-22

2005-02-22

Nelms, David (Department: 2818)

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

Regenerative type switching device

Device protection

C438S133000

Reexamination Certificate

active

06858885

ABSTRACT:
A protection circuit for use in a semiconductor apparatus includes a first conductivity type semiconductor substrate, a second conductivity type first diffusion region formed on the semiconductor substrate, and a second conductivity type second diffusion region formed on the semiconductor substrate. The second diffusion region is distanced at a prescribed interval from the first diffusion region. The first diffusion region is electrically connected to a pad for electrically connecting the semiconductor apparatus to an outside region. The second diffusion region is electrically connected to a power supply voltage. At least a portion of each of the first and second diffusion regions is entirely formed right under a pad area having the pad.

REFERENCES:
patent: 6130117 (2000-10-01), Walker et al.

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