Method for solving problem of oil bleeding of anti-welding plug hole in single-side windowed PCB (printed circuit board)

A technology of PCB board and window opening, which is applied in the direction of electrical connection formation of printed components, etc., can solve the problems of easy expansion and penetration to the PAD or the nearby copper surface, preventing oil from solder plug holes, etc., so as to improve the quality and yield and avoid rubbing. flower, effect

Inactive Publication Date: 2014-03-26
SHENZHEN KINWONG ELECTRONICS
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Problems solved by technology

[0007] In view of the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a method for solving the problem of oil leakage from the anti-solder plug hole on the single-sided windowed PCB board, so as to solve the problems of the film light transmission point and the plug hole in the prior art. The problem that the ink in the unexposed space is easy to expand and seep to the PAD or the nearby copper surface under the action of high temperature

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  • Method for solving problem of oil bleeding of anti-welding plug hole in single-side windowed PCB (printed circuit board)
  • Method for solving problem of oil bleeding of anti-welding plug hole in single-side windowed PCB (printed circuit board)

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Embodiment Construction

[0020] The present invention provides a method for solving the problem of oil leakage from the anti-solder plug hole on the single-sided window opening PCB. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples . It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] Because the ink filled in the anti-solder plug hole is very easy to flow out from the single-sided window opening position during the curing process, and invade the pad (ie PAD), this phenomenon is called oil leakage. Oil leakage can easily lead to poor soldering between PCB and components or affect the appearance of the product.

[0022] In view of the above-mentioned technical defects, the present invention provides a method for solving...

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Abstract

The invention discloses a method for solving the problem of oil bleeding of an anti-welding plug hole in a single-side windowed PCB (printed circuit board). The method includes the steps: performing development processing on the single-side windowed PCB, performing light-sensitive curing on unexposed printing ink in the anti-welding plug hole in the single-side windowed PCB, and forming a layer of light-sensitive cured film so as to prevent oil bleeding in the subsequent curing process. In other words, the anti-welding plug hole is prevented from post-curing thermal expansion as a result of oil bleeding, so that quality and yield are improved. In addition, for the PCB, hardness of the printing oil is improved after one more time of UV (ultraviolet) curing, and the board is prevented from being scratched caused by carrying before post curing.

Description

technical field [0001] The invention relates to the technical field of printed circuit board processing and manufacturing, in particular to a method for solving the problem of oil leakage from solder-proof plug holes on a single-sided window-opening PCB. Background technique [0002] PCB (Printed Circuit Board), the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. Because it is made using electronic printing, it is called a "printed" circuit board. [0003] As the density of PCB board structure becomes higher and higher, PCB designers have increasingly designed via holes on the patch, and in order to consider PCB heat dissipation and avoid soldering short circuit, such structural boards are made in anti-soldering At the same time, more and more designs are choosing plug holes to open ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/40
Inventor 谢伦魁刘赟舒时豆
Owner SHENZHEN KINWONG ELECTRONICS
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