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Multi-layer structured cover plate for improving drilling position precision of flexible PCB (printed circuit board)

A flexible printed circuit and hole position accuracy technology, applied in metal processing and other directions, can solve the problems of inability to obtain drilling hole position accuracy and quality, affecting the hole position accuracy of the flexible board, and bending deformation of the flexible board. The effect of drilling hole position accuracy, reducing slippage in drilling, and reducing compression deformation

Active Publication Date: 2015-04-29
DONGGUAN HUANGJIANG DASHUN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used flexible boards are drilled with aluminum sheets below 0.2mm or phenolic paper cold punched boards. Both cover plates can only solve some problems that affect the accuracy of the flexible board's hole position, so the best drilling hole position cannot be obtained. precision quality
The use of phenolic paper cold stamping board will produce such as figure 1 Severe drill bit bending deformation shown
The use of an aluminum-based cover will result in issues such as figure 2 The severe bending deformation of the flexible board shown

Method used

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  • Multi-layer structured cover plate for improving drilling position precision of flexible PCB (printed circuit board)
  • Multi-layer structured cover plate for improving drilling position precision of flexible PCB (printed circuit board)
  • Multi-layer structured cover plate for improving drilling position precision of flexible PCB (printed circuit board)

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The structure diagram of the present invention is as image 3 As shown, the multi-layer structure cover plate of the present invention that improves the accuracy of the drilling hole position of the flexible printed circuit board includes a drilling guide layer 1 and a hard cover plate 3, and the drilling guide layer 1 is arranged on the top of the hard cover plate 3 noodle. In this embodiment, the above-mentioned drilling guide layer 1 is attached to the substrate 2 to form a soft cover layer.

[0014] The soft cover layer composed of the above-mentioned drilling guide layer 1 attached to the substrate 2 is a thin layer with a thickness of less than 0.5mm. The soft cover layer is a material that is easy to drill into, and its function is to guide the drilling, reducing the figure 1 The amount of deformation shown increases the overall CPK value of flexible plate drilling.

[0015] The above-mentioned substrate 2 is an aluminum substrate. The thickness of the substra...

Embodiment 2

[0023] The structure diagram of the present invention is as Figure 4 As shown, the multi-layer structure cover plate of the present invention that improves the accuracy of the drilling hole position of the flexible printed circuit board includes a drilling guide layer 1 and a hard cover plate 3, and the drilling guide layer 1 is arranged on the top of the hard cover plate 3 noodle. The difference between this embodiment and Embodiment 1 is that no substrate 2 is provided.

[0024] The drilling guide layer 1 provided on the hard cover plate 3 is a thin layer with a thickness of less than 0.5mm. The drilling guide layer 1 is a material that is easy to drill into, and its function is to guide the drilling, reducing the figure 1 The amount of deformation shown increases the overall CPK value of flexible plate drilling.

[0025] In this embodiment, the above-mentioned drilling guide layer 1 and hard cover plate 3 can be stacked in multiple layers. In order to improve the drilli...

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Abstract

The invention relates to a multi-layer structured cover plate for improving the drilling position precision of a flexible PCB. The multi-layer structured cover plate comprises a drill-in guide layer and a hard cover plate, wherein the drill-in guide plate is arranged on the top surface of the hard cover plate and attached to a substrate to form a soft cover plate layer. The multi-layer structured cover plate for improving drilling position precision of the flexible PCB can improve the micro-drilling-in drilling position precision, reduce high-speed drilling temperature as well as wearing of tools, improve the machining efficiency and reduce the cost.

Description

technical field [0001] The invention is a multi-layer structure cover plate for improving the drilling hole position accuracy of a flexible printed circuit board, which belongs to the innovative technology of the multi-layer structure cover plate for improving the drilling hole position accuracy of the flexible printed circuit board. Background technique [0002] The accuracy of the microhole position is evaluated by the Complex process capability (CPK) index. CPK refers to the degree to which the process capability meets the requirements of product quality standards (such as specifications, scope, etc.), and the process capability refers to the actual working capability of the process in a controlled state (stable state) within a certain period of time. The larger the CPK value, the better the hole position accuracy. [0003] At present, flexible printed circuit boards are widely used in medical treatment, automation equipment, mobile communications and other industries to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26D7/00
Inventor 王成勇郑李娟李姗廖冰淼刘庆伦
Owner DONGGUAN HUANGJIANG DASHUN ELECTRONICS
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