Patent ID: 8263887

Claim:
A key assembly for use in an electronic device, comprising: a backing plate having a top surface which defines at least one recess; a key subassembly located above the top surface of the backing plate, including: a dome sheet having a number of dome switches on one side thereof; a flexible member formed of a light transmissive material having opposed first and second sides, the flexible member having a plurality of key stems located on the first side and a plurality of actuators located on the second side opposite the key stems and adjacent to the dome switches for actuating them; at least one keycap having a light transmitting portion attached to at least one of the key stems; and a flexible printed circuit board (PCB) received within the recess of the backing plate and connected to the dome sheet; a light emitting diode (LED) connected to the PCB; and a light diffuser positioned opposite the LED having a light incident surface and at least one light emitting surface, wherein the light diffuser is configured to receive light from the LED when activated and direct the light towards the flexible member to illuminate it, wherein the illuminated flexible member emits at least a portion of the light received from the light diffuser through the light transmitting portion of the keycap to illuminate it.