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Electrostatic discharge protecting equipment of connection pad and its method and structure

An electrostatic discharge protection and coupling technology, applied in the field of electrostatic discharge protection devices, can solve the problems of increasing circuit area and cost

Active Publication Date: 2008-05-07
MACRONIX INT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, adding an additional guard ring and control circuit design in the ESD protection circuit will increase the area of ​​the circuit during fabrication and further increase the cost

Method used

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  • Electrostatic discharge protecting equipment of connection pad and its method and structure
  • Electrostatic discharge protecting equipment of connection pad and its method and structure
  • Electrostatic discharge protecting equipment of connection pad and its method and structure

Examples

Experimental program
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Embodiment Construction

[0023] Please refer to Figure 2A , which is a circuit diagram of an electrostatic discharge protection device according to a preferred embodiment of the present invention. The ESD protection device 200 includes a regulation circuit 210 , a snapback component 220 and a control circuit 230 . The regulation circuit 210 includes a silicon controlled rectifier 212 . A silicon controlled rectifier 212 is coupled to the pad 20 , and the silicon controlled rectifier 212 includes a first diode 216 . The snapback component 220 can optionally be used with the diode circuit 214 . In the case of using the diode circuit 214, it is coupled to the N pole of the diode circuit 214 (such as Figure 2A As shown), in the case of not using the diode circuit 214, it is coupled to the N pole of the first diode 216 (not shown). The control circuit 230 is coupled to the N pole of the first diode 216 . In the normal operation mode, the control circuit 230 is used to provide a first voltage V1 (for...

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PUM

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Abstract

An electrostatic discharge protection device for a contact pad includes a regulating circuit, a snapback component and a control circuit. The regulating circuit includes a silicon controlled rectifier coupled to the pad. The silicon controlled rectifier includes a first diode. The snapback component is coupled to the N pole of the first diode when the second diode is not used, and is coupled to the N pole of the second diode when the second diode is used. The control circuit is coupled to the N pole of the first diode. In normal operation mode, the control circuit is used to provide a first voltage to the N pole of the first diode, so that the N pole of the first diode Collect a plurality of charged carriers, and make the silicon controlled rectifier not be turned on. In the electrostatic discharge mode, the control circuit does not provide the first voltage to the N pole of the first diode, so that the N pole of the first diode Charge carriers are not collected.

Description

technical field [0001] The present invention relates to an electrostatic discharge protection device and its method, and in particular to an electrostatic discharge protection device and its method for a contact pad. Background technique [0002] Electrostatic discharge (ElectroStatic Discharge, ESD) is a phenomenon in which static electricity accumulates and is transferred between different objects. Electrostatic discharge occurs for a very short time, only on the order of nanoseconds (ns). A very high current is generated during an ESD event, usually in the order of a few amperes. As a result, once the current generated during electrostatic discharge passes through the semiconductor integrated circuit, it will usually damage it. Therefore, in the semiconductor integrated circuit, the electrostatic discharge protection device between the power lines must provide a discharge path when high-voltage static electricity is generated, so that the semiconductor integrated circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/02H01L23/60H05F3/02
Inventor 赖纯祥
Owner MACRONIX INT CO LTD
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