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scr device with high trigger current and electrostatic discharge circuit structure

An electrostatic discharge circuit, trigger current technology, applied in the direction of electric solid devices, circuits, electrical components, etc., can solve the problems of increasing the trigger current, process incompatibility, etc., to achieve the effect of improving the trigger current

Active Publication Date: 2022-05-17
江苏应能微电子股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an SCR device with a high trigger current and an electrostatic discharge circuit structure, which solves the problems in the related art that the increase of the trigger current leads to process incompatibility, etc.

Method used

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  • scr device with high trigger current and electrostatic discharge circuit structure
  • scr device with high trigger current and electrostatic discharge circuit structure
  • scr device with high trigger current and electrostatic discharge circuit structure

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Embodiment Construction

[0041] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0042] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments of some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0043] It should be noted that the terms "f...

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Abstract

The present invention relates to the field of semiconductor technology, and specifically discloses an SCR device with high trigger current, which includes: a substrate of a first conductivity type; a well of a second conductivity type; a low-voltage well of the second conductivity type and a low-voltage well of the first conductivity type ; the first N+ region and the first P+ region; the second N+ region and the second P+ region; a trigger structure is set at the junction of the low-voltage second conductivity type well and the low-voltage first conductivity type well, and the trigger structure includes alternately arranged trigger N+ region and the triggering P+ region; all triggering N+ regions are respectively connected with the first N+ region and the first P+ region, and form the anode metal terminal of the SCR device after being connected; all triggering P+ regions are respectively connected with the second N+ region and the second P+ The area is connected, and the cathode metal terminal of the SCR device is formed after the connection. The invention also discloses an SCR device with high trigger current and an electrostatic discharge circuit structure. The SCR device with high trigger current provided by the invention can increase the trigger current without changing the technology.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an SCR device with high trigger current and an electrostatic discharge circuit structure. Background technique [0002] ESD (Electro-static discharge, electrostatic discharge) is ubiquitous in the process of chip manufacturing, packaging, testing and use. When released, the instantaneous power is as high as tens or hundreds of watts, which is extremely destructive to the chips in the circuit system. According to statistics, more than 35% of chip failures are caused by ESD damage. Therefore, in the design of chips or systems, the design of electrostatic protection modules is directly related to the functional stability of the circuit system and system reliability, which is extremely important for electronic products. [0003] For electrostatic protection, SCR (Silicon Controlled Rectifier, thyristor) structure (such as figure 1 (shown) is a device with the strongest curr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/02
CPCH01L27/0248H01L27/0296H01L27/0262
Inventor 朱伟东赵泊然
Owner 江苏应能微电子股份有限公司