FPC is soft circuit board, flexible circuit board is made of polyimide or polyester film as a kind of printed circuit board with high reliability and excellent flexibility. Short for flexible board or FPC, with high wiring density, light weight, thin thickness. FPC is mainly used in mobile phone, laptop, PDA, digital camera, LCM and other products.
1、Bonding Layer
Usually refers to the film layer of a multilayer board, or TAB tape, or sheet of flexible board, the adhesive layer between copper sheet and polyimide (PI) substrate.
2、Acrylic
Is the common name of polyacrylic resin, most of the flexible board use its film, as the next film use.
3、Access Hole
Usually refers to the Coverlay (holes to be cut out first) of the surface of the flexible board, which is used to fit on the surface of the flexible board circuit as an anti-welding film. However, it is necessary to deliberately expose the hole ring hole wall or square welding pad for welding of parts. "Access holes "are holes in the surface that allow the outside world to "Access" the solder joints on the surface below the sheath. Some multilaminates also have such outings.
4、Anchoring Spurs
In the middle plate or single panel, in order to make the hole ring welding pad has stronger adhesion property on the plate surface, it can add some fingers on the extra space outside the hole ring to make the hole ring more consolidated, so as to reduce the possibility of floating away from the plate surface.
5、Adhesive
A substance, such as resin or paint, that makes two interfaces bond.
6、Bandability
One of the characteristics of a Dynamic Flex Board Board, such as the one that follows the Print Heads of a computer disk drive, should have a quality of one billion "flexability tests."
