Patent ID: 8288673
Filing Date: 2012-10-16
Classification: G06F,H01H

Abstract:
1. A keyboard mounted on a keyboard housing of a laptop having a hinged cover and a display on an inner surface of the cover, comprising: a rectangular key printing film formed of an optically transmissive material and comprising a plurality of keys with characters printed thereon; a rectangular luminescent layer formed of optically transmissive silicone rubber, the luminescent layer being mounted below the key printing film and comprising a plurality of spaced bottom cavities, each cavity corresponding to the key thereabove; an LED (light-emitting diode) light source disposed to a side of the luminescent layer; and a capacitive layer mounted below the luminescent layer and comprising an insulative layer and a plurality of pairs of upper and lower conductors; wherein each cavity corresponds to the pair of upper and lower conductors therebelow; wherein a pressing of the key changes capacitance of the pair of upper and lower conductors for typing or performing a predetermined command; and wherein light emitted by the LED light source is directed to the luminescent layer which in turn directs the light upward toward the key printing film.