Overview of FPC flex board products

FPC flex board is a basic product in the electronics industry, widely used in electronic products such as communication equipment, computers, automotive electronics and industrial equipment and various household appliances. Its main function is to support circuit components and interconnect circuit components. FPC soft board is a large category of printed circuit boards. According to the structure of FPC flexible printed circuit boards, FPC manufacturers can be divided into single-sided, double-sided and multi-layer boards according to the number of conductor layers.

FPC production process

Single-sided FPC:

Single-sided copper clad laminate → Cut Lamination → washing, drying → drilling or punching → screen printing line anti-etching pattern or using dry film → solidify inspection and repairing → etching copper → etching resist ink, drying → washing, drying →solder mask, UV curing → screen printing, UV curing → preheating, punching and Form → open short circuit test → washing, drying → pre-coated soldering anti-oxidant (dry) or spray hot air flattening → inspection packaging → finished product delivery.

Double-sided FPC:

Double-sided copper clad laminate → Cut Lamination → lamination → CNC drilling →inspection, burr cleaning → PTH → full plate electroplated thin copper → inspection,washing → screen negative Circuit pattern, curing (dry film or wet film, exposure, developing) → inspection, repairing → line pattern plating → electroplating tin (resistance nickel/gold) → resist ink(photosensitive film) → → etching copper → (DE-WETTING) → Clean → solder mask(adhesive dry film or wet film, exposure, development, heat curing) → cleaning, drying → screen printing, curing → (HASL) → Profile → cleaning, drying → open short circuit test → inspection packaging → finished product delivery.