Patent ID: 8186866

Claim:
A metallic panel assembly having multilayer arrays of micropores, the metallic panel assembly being disposed on a surface of an electronic device and comprising: a backlight module including a first light-guiding plate and a second light-guiding plate located on one side surface of the first light-guiding plate, the first and second light-guiding plates being provided with first and second light-guiding microstructures, the first light-guiding microstructures and the second light-guiding microstructures being arranged alternatively; a first set of light-emitting units and a second set of light-emitting units being arranged on one side of the first and second light-guiding plates respectively; a first shielding unit and a second shielding unit being arranged above the first and second light-guiding plates and the first and second sets of light-emitting units respectively; and a panel body arranged on the other side surface of the first light-guiding plate and having a plurality of stripe-like hollowed portions, each stripe-like hollowed portion encircling a key body of a predetermined shape, a plurality of micropores being provided on the surface of the key body, the plurality of micropores being arranged to form a pattern of the key body.