CN206302624U - An electrostatic protection structure based on PCB circuit board - Google Patents

Abstract

The utility model discloses a kind of electrostatic protection structure based on PCB, including PCB main body, holding wire and ground wire are provided with the PCB main body, in the PCB main body, it is provided with some relative one by one signal tips and ground connection tip, the sophisticated and described ground connection tip of the signal connects the holding wire and the ground wire respectively, and the sophisticated and described ground connection tip of the signal surrounds and is provided with welding resistance windowing.The utility model uses the special shape corrosion technology of electronic circuit board copper sheet, extra electronic component is not increased, can reach the purpose of quick release electrostatic, save and use the cost of ESD components, production cost is reduce further, while the zigzag tip for using can further disperse Electro-static Driven Comb, Electro-static Driven Comb risk is reduced, simple structure, beneficial to the manufacturing.

Description

An electrostatic protection structure based on PCB circuit board

technical field

The utility model relates to the field of electronic circuit boards, in particular to an electrostatic protection structure based on a PCB circuit board.

Background technique

Static electricity is an objectively existing natural phenomenon, which can be produced in many ways, such as contact, friction, induction between electrical appliances, etc. Static electricity is characterized by long-term accumulation, high voltage, low battery, low current and short action time. Static electricity has irreversible damage to the components of our electronic equipment.

Electrostatic discharge electronic components are electronic components aimed at the rapid discharge of static electricity, which have a good protective effect on the electronic components of the system. However, if the number of electrostatic discharge electronic components is increased to protect the system, a certain cost will inevitably be increased. How to reduce the cost of products in the electronics industry has become a way of survival that enterprises pay more and more attention to.

The above defects are worth improving.

Contents of the invention

In order to overcome the deficiencies of the existing technology, the utility model provides an electrostatic protection structure based on a PCB circuit board.

The technical scheme of the utility model is as follows:

An electrostatic protection structure based on a PCB circuit board, comprising a PCB circuit board main body, a signal line and a grounding line are arranged on the PCB circuit board main body, and it is characterized in that, on the PCB circuit board main body, several The signal tip and the ground tip are opposite to each other, the signal tip and the ground tip are respectively connected to the signal line and the ground line, and the signal tip and the ground tip are wrapped with solder resist windows.

Further, the signal tip and the ground tip are equal in size.

Further, both the signal tip and the ground tip are conductive copper skins.

Further, both the signal tip and the ground tip are saw-toothed tips, and the saw-toothed tips of the signal tip and the saw-toothed tips of the ground tip are opposite to each other.

Further, the distance between the signal tip and the ground tip is at least 4mil.

Further, the edge width of the solder resist window is at least 3mil.

According to the utility model of the above scheme, its beneficial effect is that the utility model adopts the special shape corrosion technology of the copper skin of the electronic circuit board, and can achieve the purpose of quickly releasing static electricity without adding additional electronic components, saving the use of ESD components. The cost of the device further reduces the production cost, and at the same time, the serrated tip can further disperse the electrostatic discharge, reduce the risk of electrostatic discharge, and has a simple structure, which is beneficial to manufacturing.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure, 1. Signal tip; 2. Ground tip; 3. Solder mask opening.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figure 1, a kind of static protection structure based on PCB circuit board, comprises PCB circuit board main body, and described PCB circuit board main body is provided with signal wire and ground wire, is also provided with several on described PCB circuit board main body One opposite signal tip 1 and ground tip 2, the signal tip 1 and the ground tip 2 are respectively connected to the signal line and the ground line (not shown in the figure), and the signal tip 1 and the ground tip 2 are surrounded by a solder resist window 3 .

The signal tip 1 and the ground tip 2 have the same size, and both are conductive copper skins. In this embodiment, the signal tip 1 and the ground tip 2 are both serrated tips, and the serrated tip of the signal tip 1 and the ground tip 2 are The serrated tips are equal in size and opposite each other. The serrated tip can further disperse the electrostatic discharge and reduce the risk of electrostatic discharge.

In this embodiment, the spacing between the signal tip 1 and the ground tip 2 is at least 4 mils to ensure the processing spacing, and the edge width of the solder mask opening 3 is at least 3 mils to ensure the green oil bridge spacing.

The utility model utilizes the tip discharge principle to set the tip of the signal line and the grounding tip of the grounding line on the PCB circuit board. The charge at the tip of the signal tip is particularly dense, and the electric field in the air near it is particularly strong, so that These high-speed ions hit air molecules to ionize more molecules. At this time, the air becomes a conductor, so that the static electricity is quickly transmitted to the opposite grounding tip, and then to the grounding wire, so that the static electricity is very It is about to be released to the ground plane, and the whole system is protected by static electricity.

The utility model adopts the special shape corrosion technology of the copper skin of the electronic circuit board, and can achieve the purpose of quickly releasing static electricity without adding additional electronic components, which saves the cost of using ESD components and further reduces the production cost. The serrated tip can further disperse the electrostatic discharge, reduce the risk of electrostatic discharge, and has a simple structure, which is conducive to manufacturing.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

The utility model patent has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the implementation of the utility model patent is not limited by the above-mentioned methods, as long as various improvements made by the method concept and technical solutions of the utility model patent are adopted, or Directly applying the ideas and technical solutions of the utility model patent to other occasions without improvement is within the protection scope of the utility model.

Claims (6)

1. A static protection structure based on a PCB circuit board, comprising a PCB circuit board main body, said PCB circuit board main body is provided with a signal line and a grounding wire, it is characterized in that, on said PCB circuit board main body, several The signal tip and the ground tip are opposite to each other, the signal tip and the ground tip are respectively connected to the signal line and the ground line, and the signal tip and the ground tip are surrounded by solder resist windows. 2. The electrostatic protection structure based on a PCB circuit board according to claim 1, wherein the signal tip and the ground tip are equal in size. 3. The electrostatic protection structure based on PCB circuit board according to claim 1, characterized in that, both the signal tip and the grounding tip are conductive copper skins. 4. The electrostatic protection structure based on PCB circuit board according to claim 1, characterized in that, the signal tip and the grounding tip are jagged tips, and the jagged tip of the signal tip and the grounding tip The serrated tips of the tips are opposite each other. 5 . The PCB-based electrostatic protection structure according to claim 1 , wherein the distance between the signal tip and the ground tip is at least 4 mils. 6 . The electrostatic protection structure based on PCB circuit board according to claim 1 , wherein the edge width of the solder resist window is at least 3 mils.