Keypad illumination apparatus
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United States of America Patent
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Jan 22, 2013
Grant Date -
Apr 7, 2011
app pub date -
Oct 1, 2009
filing date -
Oct 1, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A keypad illumination apparatus having a key plate member, a flexible light guide film, a reflective layer, a plurality of metal domes, a light source and a substrate. The key plate member may have a plurality of keys formed thereon. The flexible light guide film is configured to transmit light from the light source and has a plurality of plunging structures and apertures to accommodate the plurality of metal domes, which may be configured to actuate a plurality of electrical switches on the substrate.
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