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PCB expansion and contraction compensation method

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

Active Publication Date: 2017-02-15
GUANGZHOU FASTPRINT CIRCUIT TECH +2
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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] like 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 PC...

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Abstract

A compensation method for PCB expansion and contraction, comprising the following steps: a PCB (100) is divided into a plurality of areas; at least two reference targets (110) are arranged on each area; after the PCB (100) has been pressed, the actual positions of the reference targets (110) on each area are measured and compared with theoretical positions, and an expansion and contraction value of each area is converted. The expansion and contraction of a PCB is inconsistent at different positions. Partition area measurement significantly reduces expansion and contraction deviation of the PCB, and partition area compensation is performed on subsequent processes via the obtained expansion and contraction value of each area, thereby reducing production errors in the subsequent processes, and increasing the manufacturing precision of the PCB.

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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Patent Type & Authority Patents(China)
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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