Backlight Membrane Switches

Backlight Membrane Switches   Backlight Membrane Switches means that there is light source from the backside to light the graphic overlay and provide the indication information to users or when the product used in the night or dark environment it can light the graphic and make the users or workers make buttons press operation correctly and avoid pressing wrong buttons.There are several types of backlighting ways for the membrane switches. They are:   1) LED backlighting memmbrane switches;2) EL lamp backlighting membrane switches;3) LGF(Light Guide Film) backlighitng membrane switches;4) Fiber backlighting membrane switches (seldom used in nowadays due to its complex manufacturing process and very high cost.It has been replaced by EL lamp backlighting and LGF backlighting technology);For the LED backlighiting keypads, the graphic overlay lighted by the backside LEDs which assembled on the flex or rigid circuit layer. By this way, it is very simple and also economical. But it couldn't g