Patent ID: 8913013

Claim:
A keyboard, comprising: a key module comprising: a key membrane having a space therein; a plurality of light-transmissive key caps disposed on the key membrane; and a reflection membrane received in the space, and formed with a plurality of through holes; a backlight module comprising: a light guide plate received in the space, disposed between the key membrane and the reflection membrane, and formed with penetrated holes respectively corresponding to one of the through holes; a plurality of elastic elements received in the space; at least one adhesive membrane received in the space, covering on a light output surface of the light guide plate being opposite to the reflection membrane, and respectively fixing each of the elastic elements in one of the penetrated holes; and an electric circuit substrate received in the space, disposed on a surface of the reflection membrane being opposite to the light guide plate, and formed with a plurality of electric switches respectively corresponding to one of the elastic elements.