Printed circuit board and method for determining plugging state between printed circuit board and flexible circuit

Abstract

The invention discloses a printed circuit board and a method for determining the plugging state between a printed circuit board and a flexible circuit. The printed circuit board comprises a substrate,and a connector which is fixed on the substrate and is used for being connected with the flexible circuit board; an auxiliary golden finger is additionally arranged on the connector, and through thecooperation with a determination element which is additionally arranged on the substrate and connected with the auxiliary golden finger, the plugging state between the first golden finger of the connector and the second golden finger of the flexible circuit can be determined, so that in the actual application process, the power-on operation can be carried out on the equipment after the plugging state is determined to be normal, and furthermore, the risks of large current caused by plugging abnormity can be effectively prevented, therefore, the rejection loss is reduced, and the equipment yieldis improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a printed circuit board and a method for judging the insertion state between the printed circuit board and the flexible circuit board. Background technique [0002] With the rapid development of telecommunication technology, various electronic devices have gradually permeated people's lives. Printed circuit boards (Printed Circuit Board, PCB) and flexible circuit boards (Flexible Printed Circuit, FPC) are used as supports for electronic equipment to realize electrical connection of various components in the electronic equipment. With the development trend of diversification and complexity of electronic equipment structures and types in the market, printed circuit boards and flexible circuit boards are becoming more and more important. [0003] In the prior art, the flexible circuit board is mainly connected to the printed circuit board through the following methods: buckl...

AI Technical Summary

Problems solved by technology

However, the inventors found that in the process of inserting the flexible circuit board and the printed circuit board using the connector, it is inevitable that some insertion deviation or inclination will occur, such as figure 2 In this case, there may be abnormal conditions such as short circuit on the gold finger on the flexible circuit board. At this time, when the device is powered on, a large current may be generated, which may cause abnormalities such as circuit burnout, which will lead to product scrapping.

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