Protective element and electrostatic discharging protection device having the same

Abstract

The invention discloses a protective element and an electrostatic discharging protection device having the same. The electrostatic discharging protection device comprises a protective element and an element controller. The protective element comprises first and second P-type well regions which are configured in a N-type deep well region, a first N-type transistor which is formed in the N-type deep well region and a first P-type well region, and a second N-type transistor which is formed in the N-type deep well region and a second P-type well region. When an electrostatic pulse occurs in a first welding pad or a second welding pad, the element controller is used to conduct one of the first-type transistor and the second N-type transistor to release the electrostatic pulse. When first and second operating signals are supplied to the first and second welding pads, the element controller is used to close the first and second N-type transistors according to the first and second operating signals to make a current path cannot be formed by the protective element.

Description

technical field [0001] The invention relates to a protection element and an electrostatic discharge protection device with the protection element, in particular to an electrostatic discharge protection element provided with an N-type transistor and an electrostatic discharge protection device with the protection element. Background technique [0002] In order to avoid damage caused by electrostatic discharge (ESD), existing integrated circuits are often designed with electrostatic discharge protection devices. In addition, a silicon controlled rectifier (silicon controlled rectifier, SCR) is a common protection component, and is widely used in various types of electrostatic discharge protection devices. [0003] A bidirectional silicon controlled rectifier (dual direction SCR) is a bidirectionally triggered silicon controlled rectifier. Therefore, for some specific integrated circuits, since they must deal with positive and negative input signals, using a bidirectional sili...

AI Technical Summary

Problems solved by technology

[0004] However, like most silicon-controlled rectifiers, bi-directional silicon-controlled rectifiers are often not fast enough in operation, which affects the protection ability of electrostatic discharge protection devices.

Images