KR19990051165A - Pattern Structure of Printed Circuit Board for Antistatic and Damping - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs:

Antistatic protection technology.

I. The technical problem the invention is trying to solve:

It provides a pattern structure of a printed circuit board for improved antistatic and attenuation.

All. The gist of the solution of the invention:

The present invention absorbs the static electricity introduced into the signal line pattern as a ground line pattern by applying a soldering mask to a sawtooth shape in the middle of the signal line pattern and the ground line pattern on the printed circuit board or to a shape such as triangle and rhombus. To be.

la. Important uses of the invention:

Antistatic and Damping on Printed Circuit Boards

Description

Pattern Structure of Printed Circuit Board for Antistatic and Damping

The present invention relates to an apparatus for preventing static electricity, and more particularly, to a pattern structure of a printed circuit board (PCB) for preventing static electricity and attenuation.

In general, when static electricity (for example, peak noise of about 15 KV) is applied to a printed circuit board through an arbitrary port provided on the printed circuit board, the static electricity reaches the controller (circuit) provided in the printed circuit board. Antistatic measures are in place to prevent adverse effects of the system. As a general example of the antistatic measure, as shown in FIG. 1, the capacitors C1 and C2 are connected between the signal line patterns 4 and 6 and the ground line pattern 8b on the printed circuit board 2 to attenuate the amount of static electricity. Static electricity may be drawn through the external input or output jack 14 and the like shown in FIG. As an example of the external input or output jack 14 shown in FIG. 1, 10 and 12 are L channel and R channel jacks of an audio signal. And 8a, 8b, and 8c are ground line patterns.

However, antistatic measures such as the prior art may not be sufficiently prevented and attenuated.

Accordingly, an object of the present invention is to provide a pattern structure of a printed circuit board for antistatic and attenuation for improved antistatic and attenuation.

According to the above object, the present invention, in the pattern structure of the printed circuit board for the static electricity prevention and attenuation, the signal line pattern and the ground line pattern on the printed circuit board partially sawtoothed, and the signal line pattern and The sawtooth sharp portions of the ground line pattern are close to each other, and the sawtooth-shaped portions of the signal line pattern and the ground line pattern are soldered.

In addition, the present invention, in the pattern structure of the printed circuit board for preventing static electricity and attenuation, the width of the signal line pattern and the ground line pattern on the printed circuit board so that the opposite ground line pattern and the signal line pattern can be close to each other A lead mask is formed by forming a figure having a tip portion toward the opposite line pattern in the middle of the signal line pattern and the ground line pattern, wherein the lead masks of the figure shape in the adjacent signal line pattern and the ground line pattern It is characterized in that it faces close.

1 is a pattern structure diagram of a printed circuit board for antistatic and attenuation of the prior art;

2 is a pattern structure diagram of a printed circuit board for preventing and attenuating static electricity according to a first embodiment of the present invention;

Figure 3 is a pattern structure diagram of a printed circuit board for preventing and attenuating static electricity according to a second embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that like elements and like parts in the figures are denoted by the same reference numerals wherever possible. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted. And in the following description specific details will be disclosed to aid the understanding of the present invention, it should be noted that the present invention is not limited by these specific details.

2 is a pattern structure diagram of a printed circuit board for antistatic and attenuation according to the first embodiment of the present invention, and FIG. 3 is a pattern structure diagram of a printed circuit board for antistatic and attenuation according to a second embodiment of the present invention. to be.

First, a pattern structure of a printed circuit board for preventing and attenuating static electricity according to the first embodiment of the present invention will be described with reference to FIG. 2.

Referring to FIG. 2, in the signal line patterns 4 and 6 and the ground line patterns 8a, 8b, and 8c of the printed circuit board 2, jagged patterns 20 exist in the middle. The jagged points of the signal line patterns 4 and 6 and the ground line patterns 8a, 8b and 8c are very close to the jagged points of the side line pattern. The adjacent distance width t of the pointed teeth of the signal line patterns 4 and 6 and the ground line patterns 8a, 8b and 8c, which are the side line patterns thereof, is several hundred microns (µm), preferably about 0.25 mm. The distance width t of about 0.25 mm is a value that is easy to manufacture a printed circuit board without shorting between the line patterns at the present technical level. Therefore, as the level of technology increases, the distance t may be sufficiently narrowed within a range in which adjacent line patterns do not become short between each other. By forming the sawtooth-shaped patterns 20 in the signal line patterns 4 and 6 and the ground line patterns 8a, 8b, and 8c close to each other, the static electricity introduced into the signal line patterns 4 and 6 through the input and output jacks 14 It is transmitted from the sawtooth point of the sawtooth pattern 20 to the sawtooth point of the adjacent ground line pattern 8a, 8b, 8c. That is, it is absorbed into the ground.

In the first embodiment of the present invention, a portion of the sawtooth line pattern 20 is solder masked to increase the conductivity of the sawtooth line pattern 20. Accordingly, the static electricity introduced into the signal line patterns 4 and 6 will be absorbed (transmitted) much better into the ground line patterns 8a, 8b and 8c. Further, in the first embodiment of the present invention, the number of serrated line patterns 20 in the signal and ground line patterns 4, 6 and 8a, 8b, and 8c are formed on each line pattern, preferably about 2 to 3, to form the first order. Even the static electricity absorbed by the ground but weakly remaining in the signal line pattern is absorbed into the ground through the following serrated pattern 20.

Next, a pattern structure of a printed circuit board for preventing and attenuating static electricity according to a second embodiment of the present invention will be described with reference to FIG. 3.

Referring to FIG. 3, the width s of the signal line patterns 4 and 6 and the ground line patterns 8a, 8b and 8c on the printed circuit board 2 are widened to be close to each other. The width s is preferably about 0.5 mm, for example. In addition, the shape of a shape having a ridge on the opposite line pattern in the signal line patterns 4 and 6 and the ground line patterns 8a, 8b, and 8c face each other with the shape of the opposite line pattern, and each of the shape portions is a solder mask ( solder mask). Referring to FIG. 3 in detail, the leaded masks have a triangular shape (▲) 30 and a rhombus shape (◆) 32, and the leaded mask of the triangular shape (▲) 30 exists in the ground line patterns 8a and 8c at the outside. It can be seen that the solder mask having a rhombus shape (◆) 32 exists in the line pattern located between the line pattern and the line pattern. That is, in FIG. 3, a solder mask having a rhombus shape is present in the signal line patterns 4 and 6 and the ground line pattern 8b. As shown in the second embodiment, by forming a solder mask having a rhombus shape (◆) 32 or a triangle shape (▲) 30 in each line pattern, the static electricity introduced into the signal line patterns 4 and 6 through the input and output jacks 14 is a rhombus shape. (◆) It is transmitted from the vertex portion of the solder mask of 32 or triangle shape (▲) 30 to the vertex portion of the solder mask of adjacent ground line patterns 8a, 8b, and 8c. That is, it is absorbed into the ground.

Also in the second embodiment, several soldering masks (R) 32 or triangular (▲) 30 in the signal and ground line patterns 4, 6 and 8a, 8b, and 8c are formed on each line pattern, preferably 2 to 3 By forming the correction diagram, even the static electricity absorbed by the primary ground but weakly remaining in the signal line pattern is absorbed into the ground through the following serrated pattern 20.

As described above, in the present invention, a static mask introduced into the signal line pattern is grounded with a soldering mask in the middle of the signal line pattern and the ground line pattern in the middle of the signal line pattern and the ground line pattern, or in the shape of a triangle and a rhombus. To be absorbed into the line pattern.

In the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be defined by the equivalent of claims and claims.

Claims (2)

In the pattern structure of a printed circuit board for preventing static electricity and attenuation, The signal line pattern and the ground line pattern on the printed circuit board are partially serrated, and the sawtooth sharp portions of the signal line pattern and the ground line pattern are close to each other, and the sawtooth shape of the signal line pattern and the ground line pattern are close to each other. A pattern structure of a printed circuit board, characterized by soldering a portion. In the pattern structure of a printed circuit board for preventing static electricity and attenuation, The width of the signal line pattern and the ground line pattern on the printed circuit board is wide enough to allow the opposite ground line pattern and the signal line pattern to be close to each other, and the edge portion of the signal line pattern and the ground line pattern toward the opposite line pattern is intermediate. 2. A pattern structure of a printed circuit board, wherein a lead mask is formed by forming a figure shape, wherein the lead masks of the figure shape in adjacent signal line patterns and ground line patterns face each other.