Electrostatic discharge device

Details Electrostatic discharge device Electrostatic discharge device

2006-05-09

2006-05-09

Pert, Evan (Department: 2826)

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

Regenerative type switching device

Device protection

C257S355000, C361S056000

Reexamination Certificate

active

07042028

ABSTRACT:
An electrostatic discharge (ESD) device, which functions like a diode during normal IC operation and like a SCR during an electrostatic discharge event, is provided. To form an equivalent SCR structure, the ESD device includes a plurality of N+ regions and a plurality of P+ regions formed inside an N-well. The P+ regions and the N+ regions are formed adjacent to each other in a sequence, and the regions located at both ends of the sequence are the N+ regions. In addition, the ESD device is integrated with a pad and is formed under the pad. Furthermore, since the pad has a large surface area and is plated to be a good electrical conductor, the current distribution in the ESD device is uniform.

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