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Low-power-consumption bidirectional SCR device for ESD protection, and electrostatic protection circuit

A technology of ESD protection and low power consumption, which is applied in the direction of circuits, electric solid state devices, semiconductor devices, etc., can solve the problems of increasing static power consumption of chips, large leakage current, energy consumption of semiconductor products, etc., and achieve good electrostatic protection effect, low Effect of Leakage Current, Low Static Power Consumption

Active Publication Date: 2020-08-28
SHENZHEN JINGYANG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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-consumption bidirectional SCR device for ESD protection, and electrostatic protection circuit
  • Low-power-consumption bidirectional SCR device for ESD protection, and electrostatic protection circuit
  • Low-power-consumption bidirectional SCR device for ESD protection, and electrostatic protection circuit

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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts 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...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positional relationship, movement conditions, etc., if the specific posture changes, the directional indication will also change accordingly.

[0050] In the present in...

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Abstract

The invention discloses a low-power-consumption bidirectional SCR device for ESD protection, and an electrostatic protection circuit. The device comprises: a first SCR device provided with an anode, afirst electrode, a gate, and a cathode; and a second SCR device provided with an anode, a second electrode, a gate and a cathode, wherein the anode of the first SCR device is electrically connected with the cathode of the second SCR device, the cathode of the first SCR device is electrically connected with the anode of the second SCR device, the first electrode of the first SCR device is electrically connected with the gate of the second SCR device, the gate of the first SCR device is electrically connected with the second electrode of the second SCR device, the first electrode and the secondelectrode are the same in polarity, and the first electrode or the second electrode is opposite to the gate in polarity. The low-power-consumption bidirectional SCR device for ESD protection is smallin leakage current and low in static power consumption.

Description

technical field [0001] The invention relates to the technical field of electrostatic protection, in particular to a low-power 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 Electro-Static Discharge (ESD) events is becoming more and more serious, which seriously restricts the reliability of semiconductor products. Therefore, it is very necessary to provide an effective on-chip (on chip) ESD protection design for the chip. And, generally speaking, the more advanced the manufacturing process, the more difficult the ESD protection project will be. [0003] Among many optional ESD protection devices, SCR (Silicon-Controlled-Rectifier, silicon-controlled rectifier) ​​has very high area efficiency and is widely used. However, in the "diode-triggered SCR (DTSCR, diode-triggered SCR)" and "directly-connected SCR (DCSCR, directly...

Claims

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Application Information

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Patent Type & Authority Applications(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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