KR100798778B1 - Printed circuit board - Google Patents

Abstract

A printed circuit board is provided to efficiently increase a strength around an electronic apparatus by being equipped with a reinforcing member of a pattern most suitable the periphery of the electronic apparatus at the time of mounting a plurality of electronic components on the printed circuit board. A printed circuit board(110) includes a reinforcing member. The reinforcing member(130) has one or more linear member of which cross-section includes a horizontal portion and a vertical portion. The linear members are coupled with the peripheries of an electronic apparatus(120) so as to prevent distortion of the printed circuit board. The linear member is disposed in parallel to at least one portion of the electronic apparatus. The reinforcing members are blazed onto a surface of the printed circuit board. The reinforcing members are partially blazed so that a trace(111) can pass a lower portion of the reinforcing member. The reinforcing members have a rectangular hollow tube shape.

Description

Printed circuit board

1 is a plan view schematically showing the configuration of a printed circuit board according to a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line II of FIG. 1.

3 is a cross-sectional view taken along the line II-II of FIG. 1.

4A and 4B are cross-sectional views illustrating various cross-sectional shapes of reinforcing members provided in a printed circuit board according to the present invention.

5A to 5C are plan views schematically illustrating various embodiments of a printed circuit board according to the present invention.

<Description of Signs of Major Parts of Drawings>

110,210,310,410 ... Printed Circuit Board

111,211,311,411 ... Trace

120,220,320,420 ... electronic components

130,230,330,430 ... reinforcement member

The present invention relates to a printed circuit board, and more particularly, to a printed circuit board having a reinforcing member for preventing deformation such as bending, twisting, and damage.

In general, a printed circuit board (PCB) has electronic components such as a ball grid array (BGA), a chip scale package (CSP), a land grid array (LGA), and the like, such as home appliances, communication equipment, office equipment, It is widely used in various electronic products such as industrial devices and computer devices.

As various electronic products are pursuing miniaturization, slimming, and compactness, the thickness of printed circuit boards mounted thereon is gradually becoming thinner. As the thickness of the printed circuit board becomes thinner, the printed circuit board may be bent, twisted or damaged when an impact or an external force is applied to the printed circuit board. Therefore, when carrying a printed circuit board on which electronic components are mounted, Special care must be taken when handling printed circuit boards, such as when mounted on a wall.

In particular, when an external force is applied to a printed circuit board while the electronic component is mounted, and the printed circuit board is bent or twisted, the soldering part between the printed circuit board and the electronic component mounted thereon is damaged and thus not only the printed circuit board but also the electronic component is mounted. Problems that need to be discarded can arise.

In order to solve this problem, conventionally, a method of installing a reinforcing material on a board constituting an electronic component or manufacturing a printed circuit board with a high strength material has been proposed. However, the former has a problem of designing a new electronic component. There is a problem that the manufacturing cost of the printed circuit board is greatly increased.

The present invention is to solve the above problems, the printed circuit board is provided with a reinforcing member that can locally increase the strength of the printed circuit board in the vicinity of the electronic component to prevent deformation such as bending or torsion due to external force The purpose is to provide.

The printed circuit board according to the present invention for achieving the above object is provided with a reinforcing member on the surface of the printed circuit board to prevent deformation of the printed circuit board.

According to this, since the reinforcing member provided on the printed circuit board locally increases the strength of the printed circuit board, the printed circuit board can be prevented from bending or twisting because the printed circuit board is thinned and the printed circuit board is deformed by an external force to mount the printed circuit board. It is possible to prevent the electronic component from being short-circuited in the printed circuit board.

The reinforcing member may be coupled to the periphery of the electronic component mounted on the printed circuit board.

The reinforcing member may be disposed in parallel with at least one side of the electronic component.

In addition, the reinforcing member may include a plurality of linear members coupled to be perpendicular to each other.

In addition, the reinforcing member is preferably soldered to the surface of the printed circuit board.

In addition, the reinforcing member is preferably soldered only a portion so that the trace can pass through the bottom.

Hereinafter, a printed circuit board according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a plan view schematically showing the configuration of a printed circuit board according to a preferred embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line I-I of FIG. 1, and FIG. 3 is a line II-II of FIG. It is a cross section taken along.

As shown in FIG. 1, a printed circuit board 110 according to a preferred embodiment of the present invention has electronics such as a ball grid array (BGA), a chip scale package (CSP), and a land grid array (LGA) on one surface thereof. The component 120 is mounted, and a reinforcement member 130 is provided around the electronic component 120 to prevent deformation of the printed circuit board 110.

The reinforcement member 130 is formed in a "c" shape in which a plurality of straight members 131, 132, 133 are connected to each other at right angles to surround a portion of the electronic component 120. The first linear member 131 is disposed in parallel with one side 121 of the electronic component 120, and the second linear member 132 is disposed in parallel with the other side surface 122 of the electronic component 120. The third straight member 133 is disposed in parallel with another side surface 123 of the electronic component 120.

As shown in FIG. 2, each of the linear members 131, 132 and 133 of the reinforcing member 130 has a bar shape having a rectangular cross section so as to withstand deformation such as bending and torsion. As the material of the reinforcing member 130, SUS, tungsten, iron, Cu, Al, PCB, etc. are preferable, but in addition to these materials, the material may be made of other materials having light weight and high strength.

The reinforcing member 130 is soldered to the surface of the printed circuit board 110 together with the electronic component 120 when the electronic component 120 is mounted. When the electronic component 120 is soldered to the printed circuit board 110 through a reflow process, the electronic component 120 is connected to the printed circuit board 110 to couple the reinforcing member 130 to the printed circuit board 110. Solder 112 is applied not only to the portion on which the 120 is mounted, but also to the portion to which the reinforcing member 130 is coupled. Here, not all parts of the reinforcing member 130 are soldered to the printed circuit board 110. That is, as shown in FIG. 3, the solder 112 is not applied even when the reinforcing member 130 is positioned in the portion where the trace 111 of the printed circuit board 110 passes, and the trace 111 passes. The lower part of the reinforcing member 130 is not soldered by the solder 112.

The reinforcing member 130 resistant to deformation such as bending and torsion is soldered around the electronic component 120 mounted on the printed circuit board 110, whereby the electronic component 120 is mounted on the printed circuit board 110. The local strength of some can be increased. Therefore, even when an external force is applied to the printed circuit board 110, it is possible to prevent deformation such as bending or torsion in the printed circuit board 110, and the electronic component (when the printed circuit board 110 is bent or twisted). 120 may prevent a short circuit from the printed circuit board 110.

 On the other hand, the reinforcing member 130 provided in the printed circuit board 110 according to the present invention is not limited to the cross-sectional shape thereof. That is, each of the linear members of the reinforcing member provided in the printed circuit board 110 according to the present invention may have a cross-section in various shapes so as to withstand bending or torsion. The reinforcing member 140 shown in Figure 4a is made of "I-shaped steel" shape, the reinforcing member 150 shown in Figure 4b is made of a hollow hollow hollow tube shape. In addition to the reinforcing member may be made of a variety of cross-sectional shapes that can withstand bending and torsion well.

5A to 5C are plan views schematically illustrating various embodiments of a printed circuit board according to the present invention.

First, in the printed circuit board 210 illustrated in FIG. 5A, the reinforcing member 230 is formed of one linear member 231, and the reinforcing member 230 may be any one of the mounted rectangular electronic components 220. Disposed parallel to the side surface 221. In this embodiment, the reinforcing member 230 may be formed in various forms such as a bar type, an I-shaped steel type, and a rectangular hollow tube type. The reinforcing member 230 is soldered together with the electronic component 220 by the solder 112 (see FIG. 2), and soldering is not performed at a portion through which the trace 211 passes.

The printed circuit board 310 illustrated in FIG. 5B includes two straight members 331 and 332 in which the reinforcing members 330 are perpendicular to each other. The first linear member 331 is disposed to be parallel to one side 321 of the electronic component 320 mounted on the printed circuit board 310, the second linear member 332 is the end of the first linear member It is connected to the end of the 331 and is arranged to be parallel to the other side surface 322 of the electronic component (320). In this embodiment, each of the straight members 331 and 332 may be formed in various forms such as a bar type having a rectangular cross section, an I-shaped steel type, and a rectangular hollow tube type. Here, soldering is not performed on the lower portion of the first straight member 331 through which the trace 311 passes. The "a" shaped reinforcement member 330 has a simple shape when the size of the electronic component 320 mounted on the printed circuit board 310 is small and effectively increases the strength around the electronic component 320. Can be.

In the printed circuit board 410 illustrated in FIG. 5C, the reinforcing member 430 has a rectangular frame shape in which four linear members 431, 432, 433 and 434 are connected. The first to fourth linear members 431, 432, 433, and 434 constituting the reinforcing member 430 are respectively one side surfaces 421, 422, 423, and 424 of the rectangular electronic component 420. Are arranged to be parallel to each other. Here, the distances between the linear members 431, 432, 433 and 434 and the electronic component 420 may be the same.

Each of the linear members 431, 432, 433, and 434 may also be formed in various forms, such as a bar type of a rectangular cross section, an I-shaped steel type, and a rectangular hollow tube type, as disclosed in the above embodiments. Each of the linear members 431, 432, 433 and 434 is simultaneously soldered together with the electronic component 420, and the lower part of the first and third linear members 431 and 433 through which the trace 411 passes. There is no soldering. Since the rectangular frame reinforcing member 430 completely surrounds the periphery of the electronic component 420, local deformation of the peripheral portion of the electronic component 420 may be prevented.

In the embodiments illustrated and described above, one electronic component is mounted on the surface of the printed circuit board and one reinforcing member is provided around the same, but the present invention is not limited to this configuration.

That is, a plurality of electronic components may be mounted on a printed circuit board, and a reinforcing member having a form most suitable for each electronic component may be provided. In this case, since each reinforcing member locally increases the strength around each electronic component, and no deformation due to external force occurs in these portions, departure of the electronic component due to deformation of the printed circuit board can be effectively prevented.

According to the present invention described above, a reinforcing member including at least one linear member such as an "I" shape, a "b" shape, a "c" shape, and a "wh" shape is provided around the electronic component mounted on the printed circuit board. In order to increase the local strength around the electronic components of the printed circuit board, even if an external force is applied to the printed circuit board, the printed circuit board is not easily bent or twisted. Therefore, the short circuit phenomenon of the mounted electronic component due to the deformation of the printed circuit board as in the prior art can be prevented.

In addition, according to the present invention, when a plurality of electronic components are mounted on a printed circuit board, a reinforcing member having a shape most suitable for each electronic component can be partially installed, thereby effectively increasing the strength around each electronic component. Can be.

The present invention described above is not limited to the configuration and operation as illustrated and described. That is, the present invention is capable of various changes and modifications within the spirit and scope of the appended claims.

Claims (8)

In a printed circuit board in which an electronic component is mounted on the surface, Reinforcing members are provided on a surface of the printed circuit board, the reinforcing member having one or more linear members coupled to the periphery of the electronic component to prevent deformation of the printed circuit board and having a cross section and a vertical section thereof. Printed circuit board. delete The method of claim 1, The linear member is a printed circuit board, characterized in that disposed in parallel with at least one side of the electronic component. The method of claim 1, The linear member is a printed circuit board, characterized in that the plurality is coupled to be perpendicular to each other. The method of claim 1, The reinforcing member is a printed circuit board, characterized in that soldered to the surface of the printed circuit board. The method of claim 5, The reinforcing member is a printed circuit board, characterized in that only a portion is soldered so that the trace can pass through the bottom. The method of claim 1, The linear member is a printed circuit board, characterized in that the cross section of the I-shaped steel shape. The method of claim 1, The linear member is a printed circuit board, characterized in that the cross section is a rectangular hollow tube shape.

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