The FPCB is Flexible Printed Circuits Board as abbreviation the electrical component becomes small-sized anger and the circuit board of hazard existing which confront in the tendency which comes to be complicated PCB the hazard which overcomes a ewakness it is a electronic component which is developed;

Flexible circuits are constructed by building up component layers, eg. base, copper, coverlay, stiffener. Bonding between each component layer is provided by an adhesive layer (epoxy or acrylic). The materials selected must be appropriate for either static (eg. one time bend into a camera) or dynamic applications (eg. hard disk drive). If components are to be attached, the base material must be selected to withstand solder temperatures, and a stiffener may be added. Flexible base materials are relatively dimensionally unstable and have to be processed on small step & repeated blanks, typically of a size only 20% of that used for rigid pcbs. They are significantly more expensive than rigid pcbs. Final profiling and test will often be carried out as single circuits. Mechanical tooling must be selected according to the volume and accuracy required. Tooling may be either CNC soft tooling (low cost but high unit costs), steel rule (volumes up to a few thousand pieces, medium cost, low dimensional stability), or hard steel punch & die sets (durable, accurate, & high cost).