Single Layer FPC/ Double-sided FPC/ Multi-layer FPC

- Jan 27, 2018-

Single layer FPC. With a layer of chemical etching, the conductive graphic layer on the flexible insulating substrate is pressed copper foil.The insulating substrate can be polyimide, polyethylene terephthalate, aromatic amide fiber ester and polyvinyl chloride.Single FPC can be divided into four sub-categories: 1. Uncoated veneer connection. The wire pattern is on the insulating substrate, and the wire surface is not covered, and the interconnection is realized by soldering, welding or welding, often in the early telephone. 2. Covered veneer connection. Compared with the previous class, it is only a layer of overlay on the surface of the wire.When covering, the welding disk should be exposed, and simple can not be covered in the end area.It is one of the most widely used and widely used in soft PCB. It is used in automobile instrument and electronic instrument. What are the three main types of FPC? 3. Uncoated double-sided connection. Connection plate interface in front and back of the wire can be connected, in the welding plate on the insulating substrate open a via hole, the via hole in the insulation substrate on the required position of the first strike, etching or other mechanical methods. 4. Covered double-sided connection. There is a layer of cover on the surface, and the covering layer has access holes, allowing both sides to be connected, and the covering layer is still covered, made of two insulating materials and one layer of metal conductor. What are the three main types of FPC? 2. Double-sided FPC. Double-sided FPC has an etched conductive pattern on both sides of the insulating base film, increasing the density of the wiring in the unit area.The metallized hole forms a conductive path to the two sides of the insulating material to meet the flexural design and function.The mulch can protect the single, double-sided conductor and indicate the position of the element.According to the requirements, the metallization hole and the covering layer are optional, and the FPC application is less. 3. Multi-layer FPC. The multi-layer FPC is a layer of single or double-sided flexible circuit layer which is composed of three layers or more layers, and the conductive path is formed between different layers by drilling the hole and forming the metallization hole.In this way, no complicated welding process is required.Multilayer circuits have great functional differences in higher reliability, better thermal conductivity and more convenient assembly performance. What are the three main types of FPC? Its advantage is that the substrate film is light weight and has excellent electrical characteristics, such as low dielectric constant.Made of polyimide film as the backing material multi-layer soft PCB, than rigid epoxy glass cloth light weight about one-third of the multilayer PCB, but it lost the single side, double side PCB excellent soft flexible, most of these products is not required can be flexible.The multi-layer FPC can be further divided into the following types: 1. Flexible insulating base material finished product. This class is made of flexible insulating substrate, and the finished product is provided for flexure.This structure is usually a combination of two sides of a single or two-sided microstrip flexible PCB, but the central part is bonded together, which is highly flexible.In order to be highly flexible, a thin layer of suitable coatings, such as polyimide, can be used on the wire layer instead of a thick layer covering layer. What are the three main types of FPC? 2. Soft insulation substrate finished product. This type is made on soft insulation substrate, and the final product specification can be flexibly.This type of multilayer FPC is made of soft insulating materials such as polyimide film, which is pressed into multilayer laminates and loses its inherent flexibility after lamination. Shenzhen Found Printed Circuit Board Company is a professional pcb manufacturer has over 10 years experience,we supply products with FR4 laminate(Aluminum Based and Copper Based) and high frequency board,which are used in Electronic Security,lighting,telecommunication,industrial control,Medical equipment and etc. And we have passed ISO9001,ISO14001,TS16949, SGS and UL certificates Our operation and management philosophy is "High Quality,Competitive Price and Mutual benefit",we are trying our best to serve customer and succeed in win-win cooperation!