A portable computing device, including a keyboard illumination device and
system may include a light emitter housing incorporated into the hinge
element of a portable computing device. The light emitter housing may
include an aperture and a light emitter and may be configured to
illuminate a keyboard while keeping the source of the emitted light
hidden from the user and others who may be in the vicinity of the
portable computing device. The light emitter, which illuminates the
keyboard, may be driven by a different light source than the light source
that illuminates a display panel of the portable computing device. It
follows that the brightness of the light emitter may be adjusted without
having any effect on the brightness of the display panel.