Patent ID: 8357865

Claim:
A keypad comprising: a key plate member, wherein the key plate member has a plurality of keys formed thereon; a flexible light guide film disposed below the key plate member and configured to transmit light to the plurality of keys formed on the key plate member; at least one light source configured to emit light into the flexible light guide film; a plurality of plunging structures defined by portions of the flexible light guide film that are hardened to function as plungers, wherein the plurality of plunging structures are positioned beneath and correspond to all or some of the plurality of keys; a plurality of apertures formed within the flexible light guide film and positioned beneath and corresponding to all or some of the plunging structures; a reflective layer disposed below the flexible light guide film; a substrate disposed below the reflective layer; and a plurality of electrical switches on an upper surface of the substrate, wherein the plurality of electrical switches are positioned beneath and corresponding to all or some of the apertures.