Method and apparatus pertaining to keycap light guides

摘要

An apparatus (such as a keyboard) has a plurality of keycaps and a corresponding light guide film disposed on the underside of those keycaps. The light guide film has a periphery, and at least portions of that periphery are thicker than in an interior portion of the light guide film. So configured, more light can be made available for backlighting purposes in the thicker portions than at the thinner portions. These teachings include determining the various (different) thicknesses to employ for the light guide film based upon desired backlighting of one or more of the plurality of keycaps.

主权项

1. An apparatus comprising:
a plurality of keycaps; a light guide film disposed on an underside of the plurality of keycaps, the light guide film having a periphery and wherein at least portions of the periphery are thicker than an interior portion of the light guide film and are disposed in full registration with at least one of the plurality of keycaps.