Patent ID: 8217285

Claim:
A keyboard assembly comprising: a light source for emitting light; a light guide plate including a light incident surface facing the light source and a light emitting surface; and a plurality of keys mounted on the light guide plate, each key comprising a cap, a light guide portion coupled to the cap, and a spring member configured for biasing the light guide portion in a direction away from the light emitting surface of the light guide plate, each key being movable relative to the light guide plate, in response to manual manipulation thereto, between a depressed position where the light guide portion is attached to and optically coupled to the light emitting surface of the light guide plate thereby illuminating the cap, and a rest position where the light guide portion is spaced apart from the light emitting surface of the light guide plate; wherein each cap comprises a receiving cavity defined therein, the light guide portion being received in the receiving cavity.