Zhongshan flexible circuit board functions and uses and advantages and disadvantages

What is a flexible circuit board  

Speaking of flexible circuit boards, you certainly know or are familiar with what a flexible circuit board is?  According to the function of the flexible circuit board, can be divided into many kinds, such as flexible circuit board antenna, flexible circuit board touch screen, flexible circuit board, flexible circuit board capacitor screen, etc., flexible circuit board is one of them. Generally speaking, flexible circuit board is the connection line group that can be bent in a certain degree.  

Two, the function and use of flexible circuit board  

The function of a flexible circuit board is to connect two related parts or products.  Now, many products are used in the line, because it has a certain flexibility, in printers, mobile phones, notebooks and many other products have used flexible circuit boards.  Manufacturers of flexible circuit boards are mainly concentrated in the Pearl River Delta region, which is headed by Shenzhen.  

Three, flexible circuit board composition and parameters  

Flexible circuit board is a kind of circuit board, therefore, its composition and the composition of flexible circuit board is the same.  Flexible circuit boards are typically long strips with pluggable needles at both ends that can be directly connected to connectors or welded to the product.  The middle is generally the line, because the flexible circuit board needs a certain flexibility, therefore, the base material is generally calendered copper, tortuous resistance, flexible.  

Layout parameters:  

The minimum line width line spacing is 3mil/3mil.  

Minimum wire hole finished product up to 0.15mm.  

Four, flexible circuit board process  

The surface treatment process used for flexible circuit boards is usually gold immersion and occasionally oxidation prevention.  But the anti-oxidation process can not withstand high temperature, the environmental bearing capacity is worse than the gold sink, the two prices are similar, therefore, most of the gold sink process.  In addition, there are tin plating and tin spraying process, but FPC temperature is generally below 280 degrees Celsius, and tin spraying will have more than 300 degrees Celsius temperature, and tin paste hardness is smaller, so it is rarely used.  

Five, the advantages and disadvantages of flexible circuit board