The performance of the FPC thin film key switch is analyzed. The soft film between the thin film panel key switch and the thin film key lining is to reduce the pressure of the key, avoid failure and should be saved. Therefore, the soft film in the middle layer should not be removed in the production, the bubble film should be preserved. The performance of the Membrane Switch Keys 1, durability: Membrane switch life can generally reach more than 100 million times, so how long life, because the role of the switch only by the role of the Longitudinal Elastic Membrane; although the elastic membrane has one million peristalsis, but because the peristalsis is very small, only 0.10.3 mm (double stroke) , 2, sealing performance is good: because the membrane switch is a whole sealed structure, the contact point of the switch is not corroded by harmful gas, is not easy to oxidize, waterproof, dustproof, so it’s better suited to all kinds of harsh conditions. Rich color and elegant appearance: according to the user’s design, the film switch can be prominent in color and pattern scheme, decorative effect shows the comprehensive characteristics of material beauty, decorative beauty and craft beauty. Low cost electromechanical product support: Traditional mechanical switches are even strongly supported when the equipment is welded, while membrane key switches are adhesives that simply remove the backing paper and stick to the outside of the machine, the lead is inserted into the circuit socket of the whole machine to connect the circuit. 5. Small Size, light weight, reliable structure: The membrane switch can be installed in accordance with the procedures on the membrane keyboard accessories, structure density, by multi-layer film composition, thus reducing the volume, reduce quality, improve reliability.Installation and application method of membrane switch step: 1. Clean Membrane switch should be suitable for appearance (smooth, no rust, no oil, no dust) ;. Compare dimensions (place the film switch to see if the dimensions are in the correct position) ;. Detach the centrifuge paper from the bottom of the membrane switch by about 10 mm;. Then place the membrane switch in place and paste part of it, then gradually tear off the remaining centrifuge paper (angle is not more than 15 degrees) , then paste the appropriate position in turn. 5. In the bonding process, if the back of the Centrifugal paper need to remove the film switch, should be put back to prevent adhesive stick to other objects;. Note: Paste can not be repeated operation, need to complete a time; tear angle can not exceed 15 degrees; try to press the feeling, must be flat on the desktop pressure, can not release pressure in the hands, otherwise it will affect the life of the membrane switch.