With the gradual development of electronic products towards short, small, light, and thin, FPC soft boards are becoming increasingly popular among design engineers, and the demand is also constantly increasing.

FPC overlay film is a commonly used functional thin film in the PCB industry. Its main function is to protect copper foil, prevent oxidation, and provide coverage for subsequent surface treatment and solder mask in SMT processes. Below, let me explain what FPC cover film window opening means.

What does FPC manufacturer cover film window mean

The meaning of opening a window in FPC cover film is to create a hole on the cover film in the exposed copper foil area according to the shape of the design data solder pad, so that the FPC circuit or finger circuit or solder pad is exposed, and then surface treatment is carried out to achieve the purpose of connection and attachment.

There are two common ways to open windows with FPC cover film: one is to punch the mold, and stamping is the preferred method. Although the cost of the first mold opening is high, a set of molds is very suitable for mass production.

Another method is UV laser cutting, which is more suitable for samples and small batches without the need for mold making.

The above is the question about FPC cover film opening windows that the editor has compiled. We hope it is helpful to everyone. If there are still any unclear areas, please contact QQ, WeChat or phone on the right, and we will have professional personnel to answer your questions.