Patent ID: 8085246

Claim:
A keypad panel assembly having a laterally-illuminated keypad surface, arranged on an electronic device and comprising: a light-guiding plate having a carrier thereon, a front surface of the carrier being provided with a plurality of protruding strips, each protruding strip enclosing a rectangular shape and a top surface of the protruding strip being provided with a reflective layer or a light-shielding layer; a plurality of light-guiding particles provided on a back surface and in the interior of the carrier at positions corresponding to each protruding strip; and a panel arranged on the front surface of the carrier and provided with a plurality of rectangular keypads thereon, each keypad surface being provided with an icon on top, a plurality of hollowed portions being provided between each keypad and the panel, the hollowed portion encircling a rectangular shape and corresponding to each protruding strip on the front surface of the carrier so that the protruding strip is protruded out of the panel, whereby light introduced by the light-guiding plate passes through the light-guiding particles to be focused on the protruding strip and reflected by the reflective layer or the light-shielding layer thereafter, the light illuminates the icon displayed on keypad surface from both sides of the protruding strip.