The light guide film short for LGF, a membrane switch with LGF and also with the LEDs lighting design, then can build a LGF membrane switch.
With our LGF membrane switch design, we assembly with a 0.4mm thickness side visual LEDs. When lighting the LEDs, the LGF will help lighting the patterns/text that we want to. We can design lighting the each patterns/texture separate, we can design that light a big windows, we also can design that lighting the press buttons, we also can design lighting the same area with difference colors. The LGF membrane switch can be very easy for the end terminal design, there you don't need to design the extra complex control IC on the end terminal machine. The LGF membrane switch can have a much longer life time than the EL-Panel lighting membrane switch.