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Method and system for checking negative film of circuit board

An inspection method, a technology of board negative film, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problems of dependence on labor, difficulty in checking the width of power supply channels, unstable power supply of circuit boards, etc., and achieve the effect of ensuring stability

Inactive Publication Date: 2012-10-10
PEGATRON
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, whether the width of the power channel on the circuit board design is sufficient is also an important consideration. Different circuit board designs have different requirements for the minimum power channel width. When the power channel width is insufficient, it may cause the circuit board power supply unstable and affect the operational stability of circuit board products
The above-mentioned known software tools can only provide the inspection function of the general open circuit or short circuit state of the circuit board, and for the situation of insufficient power channel width, because it remains in the state of electrical connection, the aforementioned Netlist Open / Short inspection The function will still judge it as a normal connection, but cannot detect the problem of insufficient power channel width
At present, the inspection of insufficient power channel width in circuit board design still needs to be done manually and visually. Once the circuit board design is too complicated, it will greatly increase the difficulty of power channel width inspection

Method used

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  • Method and system for checking negative film of circuit board
  • Method and system for checking negative film of circuit board
  • Method and system for checking negative film of circuit board

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Embodiment Construction

[0014] In order to make the above and other objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention are listed below and described in detail in conjunction with the accompanying drawings.

[0015] Please refer to the following figure 1 is a partial schematic diagram of the negative image 12 of the circuit board. like figure 1 As shown, the circuit board negative film image 12 represents the power level of the circuit board, on which is provided an isolation pad (anti-pad) pattern 122 in an insulated state, and the isolation pad pattern 122 can be used to separate the setting of some circuits of the circuit board, And there may be a power channel S1 or S2 between two adjacent isolation pad patterns; the part outside the isolation pad pattern 122 is the power conduction area 126 plated with copper foil, and the circuit board negative image 12 also includes The power pin (VCC pin) 124 of the electronic compone...

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Abstract

The invention provides a method and a system for checking a negative film of a circuit board. The method for checking the negative film of the circuit board comprises the following steps: providing an image of the negative film of the circuit board, wherein the image of the negative film of the circuit board comprises a plurality of anti-pad figures, and every two adjacent anti-pad figures can have power supply channel; amplifying each anti-pad figure according to a set value; and judging whether the every two adjacent amplified anti-pad figures are mutually contacted or not so as to check whether the widths of the power supply channels are excessively narrow or not. Anti-pad figures of the images of the negative film of the circuit board are processed by a software program, and the statethat the power supply channels are not wide enough can be simultaneously judged during the checking of a closed circuit / open circuit of the circuit board, so the stability of a circuit board product can be ensured.

Description

technical field [0001] The invention relates to a circuit board negative inspection method and system, in particular to a circuit board negative inspection method and system capable of inspecting the width state of a power channel of the circuit board negative. Background technique [0002] In the process of circuit board manufacturing, the quality of circuit board products often depends on whether the circuit design and planning of the circuit board are perfect at the beginning, so as to avoid problems such as short circuit or unstable use of the circuit board. It is known that the method of judging the power signal state of the circuit board is to design one or more power plane layers (Power Plane Layers) in a negative way during the design process of the circuit board to represent the power / ground state of the circuit board, and then use The Netlist Open / Short inspection function provided by the circuit board design software or negative film inspection software detects th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/02G01R31/00
Inventor 林慧美
Owner PEGATRON
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