Circuit short/open testing method of flexible circuit boards

A flexible circuit board and line short-circuit technology, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem that the line short-circuit cannot be detected at the same time, and achieves the effect of high test efficiency and high test accuracy.

Inactive Publication Date: 2013-09-25
SHENZHEN ZHONGRUAN XINDA ELECTRONICS
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  • Abstract
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Problems solved by technology

[0003] At the same time, when the existing test fixtures test the open circuit of the flexible circuit board (FPC), the short circuit of the line cannot be d

Method used

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  • Circuit short/open testing method of flexible circuit boards

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Embodiment Construction

[0012] Below, the present invention will be described in detail with reference to the accompanying drawings.

[0013] A kind of circuit short circuit / open circuit test method of flexible circuit board, its flow chart sees attached figure 1 , including the following steps:

[0014] a. Select a flexible circuit board without short circuit / open circuit as the standard board, measure the inductance of the line to be tested, and obtain the standard inductance value;

[0015] b. Select a short-circuit / open-circuit flexible circuit board, measure the inductance of the same circuit to be tested, obtain a short-circuit / open-circuit inductance value, and obtain an inductance change threshold by comparing the short-circuit / open-circuit inductance value with the standard inductance value;

[0016] c. Select other flexible circuit boards to be tested, measure the inductance of the line to be tested, obtain the measured inductance value, compare the measured inductance value with the stan...

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Abstract

The invention provides a circuit short/open testing method of flexible circuit boards. The method comprises the following steps that a. a flexible circuit board without a short circuit/an open circuit is selected as a standard board, the inductance of a circuit to be tested is tested, a standard inductance value is obtained; b. a flexible circuit board with a short circuit/an open circuit is selected, an inductance changing threshold value is obtained; c. other flexible circuit boards to be tested are selected, and the inductance of circuits to be tested is tested, so that whether the circuits are short circuits/open circuits are judged. The method has the advantages that when a leading wire is a single wire and has multiple circles, if a short circuit exists between the circles, the short circuit can be tested. By testing the inductance value, the short circuit/the open circuit can be tested at one time, testing accuracy is high, and testing efficiency is high.

Description

technical field [0001] The invention relates to a testing technology of a flexible circuit board. Background technique [0002] In the short circuit test of the existing flexible printed circuit (FPC), the short circuit of the line is generally judged by designing test pins at both ends of the flexible printed circuit (FPC) and testing the conduction of the line by electrification. With this method, when the wire is a single wire with multiple turns, if there is a short circuit between the turns, it cannot be tested. [0003] At the same time, when the existing test fixtures test the open circuit of the flexible circuit board (FPC), the short circuit of the line cannot be detected at the same time, and the flexible circuit board (FPC) has thin lines, and the traditional fixture test method cannot distinguish out of this bad situation. Contents of the invention [0004] For this reason, the present invention provides a circuit short circuit / open circuit test method of a f...

Claims

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Application Information

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IPC IPC(8): G01R31/02
Inventor 赵红
Owner SHENZHEN ZHONGRUAN XINDA ELECTRONICS
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