Patent ID: 8063325

Claim:
A keypad assembly comprising: a printed circuit board comprising a plurality of fixed contact points formed thereon, an elastic sheet disposed on the printed circuit board, the elastic sheet comprising a base and a plurality of switches fixed on the base above the fixed contact points correspondingly; a plurality of key buttons, each key button comprising a main portion, a connecting ring portion extending out from side surface of the main portion, and a pressing portion extending downward from the main portion; a light shielding sheet defining a plurality of through holes, the light shielding sheet integrally formed with the key buttons, and comprising at least one hooking member extending from a periphery of an inner surface of each of the through holes, the at least one hooking member inserted into the connecting ring portion, the key buttons respectively passing through each of the through holes of the light shielding sheet, wherein the light shielding sheet with the key buttons is disposed above the elastic sheet, each pressing portion of each key button corresponding to each switch.