Membrane switch, known astact keyboard&switch, membrane keyboard & keypad, is an electrical switch for turning a circuit on and off. Membrane switch is made of soft materials, like silicone rubber, PC, PVC, PET, FPC, double-sided adhesive, etc.Membrane switchdiffers from mechanical switch, which is usually made of copper and plastic parts. Membrane switchis a circuit printed on PET or ITO. The ink used for screen printing is usually copper / silver / graphite filled and therefore it is conductive.
Membrane Switch-basic structure and materials Membrane Switchconsists ofoverlay, top adhesive, top circuit, spacer, floor circuit and adhesive.