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Electrostatic protection structure-containing circuit board

An electrostatic protection and circuit board technology, applied in emergency protection circuit devices, static electricity, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. and other problems to achieve the effect of solving electrostatic protection

Inactive Publication Date: 2014-11-05
BEIJING ZHONGQING MICRO ELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In daily life, due to the friction of hair, clothes, etc., people often accumulate a certain amount of static electricity; of course, on various electronic devices, due to the interaction between various components, it is also very easy to accumulate on the circuit board Static electricity; these static electricity are very dangerous to electronic components, and often break down and damage electronic devices on the circuit board. Sometimes, although electronic devices are not broken down, they will also affect their normal working life. Existence will have a serious impact on the normal operation of electronic devices
[0003] In addition, due to the broadband and high-voltage electromagnetic interference generated by static electricity, it can also be coupled to the circuit of the circuit board, which will interfere with the electronic device, and even cause the device to fail or malfunction, greatly reducing the reliability of the electronic device.

Method used

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  • Electrostatic protection structure-containing circuit board
  • Electrostatic protection structure-containing circuit board
  • Electrostatic protection structure-containing circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Refer to figure 1 , A circuit board 100 with an electrostatic protection structure, including a connector 104, the circuit board 100 includes a connecting hole 102, a protective ground area 101 (the shaded part in the figure) and a working ground area 103;

[0033] The protective ground area 101 is arranged on the two edges of a surface of the circuit board 100 and is arranged outside the working ground area 103 with a certain gap between the two; wherein, the protective ground area 101 is A copper skin layer with a certain width, the width can be 2mm, 3mm, 5mm, 1cm, etc. The width of the copper skin layer can be set according to the size of the circuit board, and the width can be set on the two edges of the circuit board.

[0034] The gaps can be set regularly, so that the distance between each part of the protected area 101 and the working area 103 is equal, that is, the gap has the same width, for example, the gap is a regular ring; or The gaps can be set irregularly, so ...

Embodiment 2

[0043] Refer to figure 2 In this embodiment, on the basis of embodiment 1, the circuit board 100 and the other circuit boards adopt a common ground connection mode, that is, the ground wire of the working ground area 103 of the circuit board 100 is connected to the other external circuit boards. The ground wire has a common ground terminal.

[0044] In addition, in the protected area 101, there is a solder joint 108 for guiding the static electricity of the protected area 101 into the ground. Wherein, in the gap between the protective ground area 101 and the working ground area, a varistor is connected to discharge the static electricity of the working ground area 103 to the protective ground area.

[0045] In this embodiment, the ground terminal of the connector 104 is connected to the ground terminal of the working ground area 103, and the signal line is connected with an ESD electrostatic protection device.

[0046] The rest is the same as the principle of Embodiment 1, and will...

Embodiment 3

[0049] Refer to image 3 In this embodiment, on the basis of embodiment 1, the protective ground area 101 is only plated on one edge of the circuit board 100, and the signal line end of the connector 104 is not connected to an electrostatic protection device. And no discharge circuit is installed between the protective ground area 101 and the work ground area 103. Wherein, the cable of the connector 104 is a cable containing a conductive layer, and one end of the conductive layer of the cable is connected to the protective ground area 101. The connection method can be welding, lap connection or snap connection.

[0050] The rest is the same as in Embodiment 1, and will not be repeated here.

[0051] The solution of this embodiment can still effectively prevent the connector from bringing external static electricity into the circuit board.

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Abstract

The invention discloses an electrostatic protection structure-containing circuit board. The circuit board comprises a connector and is characterized by comprising a protection area and a working area, wherein the protection area is arranged on at least one edge of any surface of the circuit board and is arranged outside the working area; a gap is reserved between the protection area and the working area; and the protection area at least is provided with a connection hole which is connected to an earth wire or the earth for conducting static electricity of the protection area into the earth wire or the earth. By the scheme of the invention, damage of the static electricity to the circuit board can be effectively prevented.

Description

Technical field [0001] The invention belongs to the technical field of circuit boards, and particularly relates to a circuit board containing an electrostatic protection structure. Background technique [0002] In people's daily life, due to the friction of hair, clothes, etc., a certain amount of static electricity often accumulates; of course, in various electronic equipment, due to the interaction between its various components, it is also very easy to accumulate on the circuit board. Static electricity; these static electricity are very dangerous to electronic components. They often break down and damage the electronic devices on the circuit board. Sometimes although the electronic devices are not broken down, they will also affect their normal working life. Therefore, static electricity Existence will have a serious impact on the normal operation of electronic devices. [0003] In addition, the broadband and high-voltage electromagnetic interference generated by static electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H05K1/11H05F3/02H02H9/00
Inventor 邢伟邵寅亮张啸
Owner BEIJING ZHONGQING MICRO ELECTRIC TECH
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