Type species

1. Single-sided plate is completed by a single-sided PI-copper plate material, then covering a layer of protective film, forming a soft circuit board having only a single layer conductor.
2, ordinary double panel uses double-sided PI plate copper plate material after completion of the double-sided circuit, the two sides are added to a layer of protective film, and becomes a circuit board having a double conductor.
3. The substrate generates a single-panel using a pure copper foil material in the circuit process, and each of the protective films are added in both sides, respectively, and become a circuit board having only a single layer conductor but there is a conductor exposed on the circuit board.
Circuit board with high flex performance in a hierarchical area

shortcoming

1, advantages:
(1) It is possible to be bent, wound, folded, can be arbitrarily arranged in accordance with the space layout, and move and telescopic in three-dimensional space, thereby achieving the integration of component assembly and wire connections;
(2) Using the FPC to significantly reduce the volume and weight of the electronic product, the need for electronic products to develop in high density, miniaturization, and high reliability direction. Therefore, the FPC flexible panel has been widely used in space, military, mobile communications, laptop, computer peripherals, PDA, digital cameras, or products;
(3) The FPC flexible plate also has good heat dissipation and solderability and the advantages such as easy-to-containe, low cost, and the design of soft and hard binding also makes up for the flexible substrate in component carrying capacity. Slightly slightly. insufficient.
2. Diffility:
(1) Successful initial cost High due to soft PCB is designed for special applications, manufactured, so the cost required for the circuit design, wiring, and photographic end plates is high. It is best not to use a small amount of applications unless there is a special application of soft PCB.
(2) Changes and fixing comparison of soft PCBs After the soft PCB is made, the change must be started from the basemap or prepared light, so it is not easy to change. The surface covers a layer of protective film, and it is necessary to restore before repairing, which is difficult to work.
(3) The size is limited by the limited soft PCB in the case of still replan, and is usually manufactured by a batch process, so it is limited by the size of the production equipment, and it cannot be done very long.
(4) Improper operation is easy to damage the manipulation of the equipment to operate the damage to the soft circuit, and the soldering and rework requires training.

The FPC flexible plate has space, reducing weight and flexibility, and the global demand for flexible circuit boards will increase year by year. The unique characteristics of the flexible circuit board make it an alternative to the rigid circuit board and the traditional wiring scheme, and it also promotes the development of many new fields, the fastest growing part is the computer hard drive (HDD) inside The connection line, the growth rate is the second area is a new integrated circuit package, and the market potential of flexible line technology in portable equipment (such as mobile phones) is very large.

According to the binding method of the substrate and copper foil, the flexible circuit board can be divided into two types: adhesive flexible plate and adsorbable flexible plate. The price of the adhesive plate is much higher than that of the rubber flexible plate, but its flexibility, copper foil and substrate binding force, the plane of the pads, etc. are better than the rubber flexible plate. So it is generally only used for situations that require high, such as: COF (COF (CHIP ON FLEX, the bare chip on the flexible panel, which requires high pad flatness). Due to the high price, most of the flexible panels currently applied in the market still have adhesive flexible panels. Since the flexible plate is mainly used in the need for bending, it is easy to produce defects such as microcracking, welding, etc. if the design or process is unreasonable.

According to the number of layers of the conductive copper foil, it is divided into single-layer plate, double-layer plate, multi-layer plate, double panel, etc. Single-layer plate structure: This structure's flexible panel is the simplest structure of the flexible plate. Generally, the substrate transparent glue copper foil is a set of raw materials, protective film transparent glue is another raw material bought. First, the copper foil should be etched and other process processing to obtain the required circuitry, the protective film to be drilled to expose the corresponding pad. After cleaning, use the rolling method to combine both. Then protected by plating or tin or tin in the exposed pad portion. In this way, the big board is done. It is generally stamped into a small circuit board of the corresponding shape.