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Reworking method for copper-clad plate circuit manufacturing abnormal products and printed circuit board

A technology for circuit production and copper clad laminates, which is applied to the rework method for abnormal products of copper clad laminate circuits and the field of printed circuit boards, can solve problems such as short circuits, unclean etching, and increase of defective products, so as to reduce costs, achieve yield, The effect of reducing waste

Active Publication Date: 2020-10-20
广州杰赛电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the traditional printed circuit board manufacturing process, defects such as short circuits often occur during the manufacturing process of copper clad laminates. These defects can be detected by AOI inspection, mainly because the local etching is not clean due to the uneven thickness of the copper layer of the board, or Vignettes appear during the exposure process, seriously affecting the yield of printed circuit boards, increasing the number of defective products, and increasing the cost of processing printed circuit boards

Method used

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  • Reworking method for copper-clad plate circuit manufacturing abnormal products and printed circuit board

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0019] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0020] refer to figure 1 , the invention discloses a rework method for making abnormal products of copper-clad laminate circuits, comprising the following steps: pickling: clea...

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PUM

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Abstract

The invention discloses a reworking method of copper-clad plate circuit manufacturing abnormal products. The reworking method comprises the following steps of acid pickling, film pasting, engineeringdata compensation adjustment, secondary alignment exposure, development, secondary etching, film stripping and inspection. The reworked abnormal product is a copper-clad plate subjected to one-time circuit manufacturing, oxides, oil stains, fingerprints and the like on the surface of the plate are removed in the acid pickling step, and the copper surface of the plate is roughened, so that subsequent copper plating of the copper surface is facilitated. In the step of engineering data compensation adjustment and the step of secondary alignment exposure, it is guaranteed that a short-circuit areacan be etched off through secondary etching, meanwhile, the problems of line negligence, sawteeth, steps and the like after secondary etching can be avoided, and the quality of plate reworking is improved. The invention further discloses a printed circuit board, the printed circuit board is manufactured by adopting the reworking method for manufacturing the abnormal product through the copper-clad plate circuit, recycling of the abnormal product is achieved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of printed circuit boards, in particular to a method for reworking abnormal products made of copper-clad laminates and printed circuit boards. Background technique [0002] With the rapid development of social economy and the optimization and upgrading of economic structure, it means that a new round of technological revolution and industrial transformation in the world is emerging, which is bound to have a profound impact on the manufacturing industry worldwide. Printed circuit boards are the basic components of electronic equipment. , is the transmission carrier of current and signal, and plays a pivotal role in electronic equipment, so higher requirements are put forward for printed circuit boards. Under the traditional printed circuit board manufacturing process, defects such as short circuits often occur during the manufacturing process of copper clad laminates. These defects can be detected by AOI inspection, ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/22
CPCH05K3/225
Inventor 刘顺风谢国荣
Owner 广州杰赛电子科技有限公司
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