1: Uniform backlight;

2: Thin (.007" typ>);

3: Flexible, and can be put on top of tactile domes;

4: Low power (.5 mA per sq in typ.);

5: EL backlighting solution is best suited for low to no-light applications, where the backlight is not always on.  That is due to the properties of phosphors that tend to decay with extended use at high voltages and frequencies.