Round Embossing Tactile Single Layer FPC Membrane Keypad

Round embossing tactile single layer fpc membrane keypad vtms00801 luphitouch is a professional designer and manuafcturer for different kinds of copper flex circuit membrane switches and membrane keypads. The buttons can be flat, round embossing, rim embossing, plateau embossing etc. The fpc circuit usually are single side or double sided fpcs. By fpc circut the membrane keypads can have much better reliability and lower loop reistance, but its cost is also much higher thanthe normal silver printed pet circuit.    production description > construction: a membrane switch typically has 6 or more or less layers. The top layer of a membrane switch is the graphic overlay interface between the user and the machine. The other critical layer is a the circuit layer. It can also be pet, fpc or pcb. All the layers are normally assembled using pressure-sensitive adhesives. Contact between two traces can be made through a printed shorting pad or through a metal dome that stands on legs. > membrane keypad structure1) 4 layers structure: graphic overlay + spacer + circuit(can be pet circuit or fpc circuit) + back adhesive2) 6 layers structure: graphic overlay + spacer: dome retainer + spacer + circuit(can be pet circuit or fpc circuit) + back adhesive;3) other structure     3.1) overlay + rubber adhesive + rubber keypad + rubber adhesive + retainer + spacer + circuit + back adhesive;