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Circuit board with static protection structure

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: 2013-09-04
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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  • Circuit board with static protection structure
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to figure 1 , a circuit board 100 with an electrostatic protection structure, which includes an I / O interface 106 , the circuit board 100 includes an electrostatic protection device, a discharge circuit, a protection area 101 and a working area 102 .

[0026] refer to figure 1 In the oblique shaded part, the protection ground area 101 is surrounded by the outside of the working ground area 102, and the discharge circuit is connected between the two; the protection ground area 101 contains four positioning holes; each The positioning holes are used to fix the circuit board 100 with screws and guide the static electricity of the protected ground area 101 into the ground wire or the ground.

[0027] For example, the protection ground area 101 is a metal conductive layer with a predetermined width provided with an opening, and is plated on each edge of a surface of the circuit board 100 . In the present embodiment, the circuit board 100 is a rectangular circuit boar...

Embodiment 2

[0038] In this embodiment, on the basis of Embodiment 1, the protection zone 101 has a first opening 108 and a second opening 107 respectively at the upper edge and the lower edge of the circuit board 100. In addition, in the On the left and right sides of an opening 108 and a second opening 107, a high-voltage capacitor 103 is respectively connected in parallel between the protected area 101 and the working area 102; that is, the upper edge of the circuit board 100 contains The first opening 108 has a high-voltage capacitor 103 connected in parallel to its left and right sides. Similarly, the lower edge of the circuit board 100 contains a second opening 107 and a high-voltage capacitor 103 is connected in parallel to its left and right sides.

[0039] The rest of the principles are the same as those in Embodiment 1, and will not be repeated here.

[0040] According to the solution of this embodiment, it can be seen that there is not only one opening in the protective ground a...

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Abstract

The invention discloses a circuit board with a static protection structure, which comprises an I / O interface, a static protection device, a discharge circuit, a protection ground area and a working ground area. The protection ground area surrounds the outer side of the working ground area, the discharge circuit is connected between the two areas, and the protection ground area at least comprises one positioning hole, wherein the positioning hole is used for fixing the circuit board and introducing the static electricity of the protection ground area into a ground line or the ground; and the ground wire end of the I / O interface is connected with a static protection device and the positioning hole in series in sequence. The danger of static electricity on the circuit can be effectively prevented by using the scheme; because the structure of the circuit board is provided with a circle of unclosed metal conducting layer, electromagnetic interference can also be effectively prevented, and the electromagnetic compatibility of the circuit board is enhanced.

Description

technical field [0001] The invention belongs to the technical field of circuit boards, in particular to a circuit board with an electrostatic protection structure. Background technique [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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K1/02H02H9/00H05F3/02H05K9/00
Inventor 邢伟邵寅亮张啸
Owner BEIJING ZHONGQING MICRO ELECTRIC TECH
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