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Low power bidirectional scr device and electrostatic protection circuit for esd protection

A technology of ESD protection and low power consumption, applied in circuits, semiconductor devices, electric solid devices, etc., can solve the problems of increasing static power consumption of chips, energy consumption of semiconductor products, large leakage current, etc., and achieve good electrostatic protection effect, low Effect of Leakage Current and DC Blocking Capability Enhancement

Active Publication Date: 2022-06-21
SHENZHEN JINGYANG ELECTRONICS CO LTD
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Problems solved by technology

However, in the "diode-triggered SCR (DTSCR, diode-triggered SCR)" and "directly-connected SCR (DCSCR, directly-connected SCR)" widely used in the low-voltage field, since both of them introduce a diode string as an auxiliary trigger path, There is a problem of large leakage current, which greatly increases the static power consumption of the chip and causes unnecessary energy consumption for semiconductor products, which has a particularly serious impact on portable products

Method used

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  • Low power bidirectional scr device and electrostatic protection circuit for esd protection
  • Low power bidirectional scr device and electrostatic protection circuit for esd protection
  • Low power bidirectional scr device and electrostatic protection circuit for esd protection

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Embodiment Construction

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingl...

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Abstract

The invention discloses a low-power bidirectional SCR device for ESD protection and an electrostatic protection circuit. The low-power bidirectional SCR device for ESD protection includes: a first SCR device with an anode, a first electrode, a gate and a cathode and a second SCR device having an anode, a second electrode, a gate and a cathode; wherein the anode of the first SCR device is electrically connected to the cathode of the second SCR device; the cathode of the first SCR device is connected to the anode of the second SCR device Electrical connection; the first electrode of the first SCR device is electrically connected to the gate of the second SCR device; the gate of the first SCR device is electrically connected to the second electrode of the second SCR device; the polarity of the first electrode and the second electrode The same, and the polarity of the first electrode or the second electrode is opposite to that of the gate. The invention aims at a low-power bidirectional SCR device for ESD protection with small leakage current and low static power consumption.

Description

technical field [0001] The invention relates to the technical field of electrostatic protection, in particular to a low power consumption bidirectional SCR device and an electrostatic protection circuit for ESD protection. Background technique [0002] With the continuous development of integrated circuit technology, chip damage caused by electrostatic discharge (Electro-Static Discharge, ESD) events becomes more and more serious, which seriously restricts the reliability of semiconductor products. Therefore, it is necessary to provide an effective on-chip ESD protection design for the chip. And, on the whole, the more advanced the manufacturing process, the more difficult the ESD protection project is. [0003] Among the many optional ESD protection devices, SCR (Silicon-Controlled-Rectifier, silicon controlled rectifier) ​​has a very high area efficiency and is widely used. However, in the "diode string auxiliary trigger SCR (DTSCR, diode-triggered SCR)" and "directly-co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/02
CPCH01L27/0262
Inventor 高东兴杜飞波侯飞
Owner SHENZHEN JINGYANG ELECTRONICS CO LTD
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