What protective film flexible circuit board FPC board used to protect it? Both dust and stain resistant anti-static, but also effective bonding board, the most appropriate anti-static PET protective film.
The flexible circuit board, also known as "FPC", that FPC board. A flexible printed circuit is an insulating substrate made of. Flexible circuits provide excellent electrical performance, designed to meet the needs of smaller and higher density mounting, and also helps to reduce the assembly process and enhance reliability. The flexible circuit board is the only solution to meet the miniaturization of electronic products and mobile requirements. Free to bend, winding, folding, can withstand millions of dynamic bending without damaging the wire, be in accordance with the requirements of any space layout arrangements, and any movement in three-dimensional space and flexibility, so as to achieve one of the components assembled and connected wires technology; flexible circuit board can greatly reduce the size and weight of electronic products, electronic products need to apply to high density, small size, high reliability direction of development.
Thus, FPC board aerospace, military, mobile communications, portable computers, computer peripherals, PDA, digital cameras and other products in the field or been widely used.
But the FPC board in the production process is prone to static electricity breakdown. Currently on the market to solve this problem mainly rely on anti-static mat, and the product against the inner-static agent added and migrate to the surface of the pad, and then the air to absorb water molecules form a conductive path, and thus the FPC board has an antistatic effect, while the product environmental factors susceptible to air, moisture and other effects, electrostatic discharge poor results. Especially in the north dry climate areas, the surface resistance value increases over time, ESD indicators decay more quickly, resulting in electrostatic discharge is unstable, so easy to breakdown FPC board circuit chip, resulting in damage to equipment operation. At the same time, the product can not carry along FPC board, at any time can not play a protective role. In the application part of the defect has been very clear, can not meet the current requirements of the FPC board technology development.
FPC board now is in the small but rapidly developing. Polymer thick film process is an efficient, low cost production process. The technology on inexpensive flexible substrates, selectively screen printed conductive polymer ink. Flexible substrate which is typically a PET. Polymer thick film conductor includes a metal screen printing packing filler or toner. Polymer thick film process itself is very clean, the use of lead-free SMT adhesives, do not etched. Its use of additive processes and low cost substrates, polymer thick film circuits are copper polyimide film circuit price 1/10; rigid circuit board price 1/2 ~ 1/3. Polymer thick film method is particularly applicable to the control panel of the machine. Mobile phones and other portable products, polymer thick film printing method is suitable for the components, switches and lighting devices on a circuit board into a polymer thick film circuits. Both to save costs and reduce energy consumption.