1. Introduction

Flexible printed circuit (FPC) is used for connecting electronic components. It has the advantages of being light, thin, soft, high in bending, stretch-resistant, and stable in signals. It is widely used in automotive electronics, smart homes, and consumer electronics, etc.

FPC board is made of polyimide (PI) film or polyacetic acid (PAS) film as the base material. It is produced through chemical etching, plating conductive materials, surface polishing, pattern exposure, and deposition of non-conductive materials.

Compared with rigid printed circuit boards, FPC can maintain original electrical properties under extreme working conditions. There will be more complex three-dimensional circuits. Therefore, FPC has broad market prospects in the future. It is an important representative of new materials.

2. Production process

FPC board is a kind of flexible circuit board. Due to its high degree of flexibility and tearability, it's suitable for applications such as curved displays and folding screens. However, compared with rigid boards, the production process of FPC boards is more complicated.

When producing FPC boards, it is necessary to prepare a series of materials, such as flexible substrates, conductive copper foil, preservatives, adhesives, covering layers, etc., and choose good production line equipment.

What is production process of FPC board? Material preparation, equipment selection, pattern production, copper laying, anti-corrosion treatment, re-drawing, welding components, covering layer production, cutting and inspection. Among these steps, patterning, copper laying, soldering components, and cutting require special attention to ensure that the quality, performance, and reliability of the component meet the requirements.

3. Applications

FPC board is widely applied in various fields, for example, automotive electronics, smart home, consumer electronics, etc.

In automotive electronics, flexible printed circuits are widely used in high-end technology such as audio systems, car navigation, car displays, and automatic driving control systems.

For smart home, FPC boards are used in various devices, such as smart lighting, smart access control, smart sockets, etc.

For consumer electronics, FPC boards are also widely used in smartphones, smart watches, smart speakers, wearable devices, etc.

4. Advantages

Compared with rigid circuit boards, there are some advantages of FPC boards.

Thin and soft

FPC boards use flexible materials as the base. They have excellent flexibility and plasticity. They can be easily bent, folded, curled, etc., and are suitable for various scenarios that require smaller volume, light weight and thin thickness.

High curvature

FPC boards have high curvature. They can adapt to various complex three-dimensional spaces.

Resistant to stretching

FPC boards have extremely high tensile strength and durability. After repeated folding and stretching, they can still maintain original circuit performance, making them suitable for frequent movement and disassembly.

Stable signal

Compared with rigid boards, FPC boards have shorter signal distances and more stable signal transmission, reducing signal crosstalk and interference, thus improving signal quality and transmission speed.

Therefore, FPC board is widely used in various fields. It plays an important role. It's good circuit board material with excellent performance, and has very broad market prospects.