Patent ID: 8441445

Claim:
An electrophoretic display keypad structure, comprising: a first printed circuit board comprising a circuit thereon; a plurality of metal domes disposed above the circuit, wherein, when the metal domes are pressed, the metal domes are electrically connected to the underlying circuit; a plurality of plungers disposed above the metal domes; the first printed circuit board is disposed below the metal domes; a second printed circuit board disposed above the plungers; an electrophoretic display film disposed above the second printed circuit board and sealed at a periphery thereof, wherein the electrophoretic display film and the second printed circuit board together perform a display function, the electrophoretic display film displays a plurality of figures when the display function is turned on, and the figures are located correspondingly to the metal domes; a front light unit disposed above the electrophoretic display film; and a keycap structure disposed above the front light unit.