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PCB expansion compensation method

A technology of PCB board and compensation method, applied in electrical components, printed circuit parts, printed circuit manufacturing and other directions, can solve the problems of large expansion and shrinkage deviation of PCB board and low precision of PCB board.

Active Publication Date: 2014-04-23
GUANGZHOU FASTPRINT CIRCUIT TECH +2
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of the electronics industry, printed circuit boards, referred to as PCB boards, require higher and higher precision. For PCB board manufacturing, expansion and contraction control is a difficult point in the process. Usually, each manufacturer will carry out overall expansion of the PCB board. Shrinkage compensation, but the PCB board produced by this method has a large expansion and shrinkage deviation, resulting in low precision of the PCB board

Method used

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

[0021] Such as figure 1 Shown, a kind of PCB expansion and contraction compensation method comprises the following steps:

[0022] S100: Divide the PCB board into multiple areas;

[0023] S200: setting at least two reference targets on each area;

[0024] S300: Measure the actual position of the reference target on each area after pressing the PCB board, compare it with the theoretical position, and convert the expansion and contraction values ​​of each area;

[0025] S400: According to the expansion and contraction values ​​of each area, perform partition compensation for each subsequent process.

[0026] The above PCB board expansion and contraction compensation method divides the PCB board before lamination into multiple areas, and sets at least two reference targets on each area, measures the actual position of the reference target on each area of ​​the...

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Abstract

The invention discloses a PCB expansion compensation method which comprises the following steps: a PCB is divided into a plurality of areas; at least two reference targets are arranged on each zone; and after pressing of the PCB, actual positions of the reference targets on each zone are measured and are compared with theoretical positions, and expansion values of each zone are converted. According to the PCB expansion compensation method, the PCB is divided into a plurality of zones before being pressed, at least two reference targets are arranged on each zone; actual positions of the reference targets on each zone of the PCB are measured after pressing and are compared with theoretical positions so as to obtain expansion values of different zones of the PCB. The PCB has inconsistent expansions at different positions. Through zonal measurement, expansion deviation of the PCB can be reduced greatly. By obtaining the expansion values of each zone, zonal compensation is carried out on each follow-up process, and production errors of follow-up processes are reduced. Thus, accuracy of manufacturing the PCB is raised.

Description

technical field [0001] The invention relates to PCB board manufacturing technology, in particular to a PCB board expansion and contraction compensation method. Background technique [0002] With the development of the electronics industry, printed circuit boards, referred to as PCB boards, require higher and higher precision. For PCB board manufacturing, expansion and contraction control is a difficult point in the process. Usually, each manufacturer will carry out overall expansion of the PCB board. Shrinkage compensation, but the PCB board produced by this method has a large expansion and shrinkage deviation, resulting in low precision of the PCB board. Contents of the invention [0003] Based on this, the present invention overcomes the defects of the prior art and provides a method for compensating expansion and contraction of PCB boards, aiming at reducing the deviation of expansion and contraction of PCB boards and improving its manufacturing accuracy. [0004] Its ...

Claims

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Application Information

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IPC IPC(8): H05K3/00
CPCH05K1/0271
Inventor 任小浪陈蓓曾志军
Owner GUANGZHOU FASTPRINT CIRCUIT TECH
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