Patent ID: 8338729

Claim:
A keypad apparatus for an electronic device, comprising: at least one light guide plate having a plurality of key buttons molded thereon in one body by Ultraviolet (UV) molding without a rubber sheet and a film sheet therebetween: at least one light source disposed on a surface of a printed circuit board (PCB) and facing one side of the light guide plate; a plurality of key input switches associated with the key buttons and pressing protrusions arranged under the light guide plate for pressing the key input switches, wherein light incidence preventing films are formed on a respective side of each of a first and second light guide plates of the light guide plates so that light irradiated from a first light source of the light sources is incident on the first light guide plate and not incident on the second light guide plate, and light irradiated from a second light source of the light sources is incident on the second light guide plate and not incident on the first light guide plate.