Backlit keypad assembly
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United States of America Patent
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Jan 27, 1998
Grant Date -
N/A
app pub date -
Sep 30, 1996
filing date -
Sep 30, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Light-reflecting structures are provided on the lower surface of a cover mounted over the keys of a keypad assembly. The light-reflecting structures reflect light from a vertical-emitting source, such as an LED, to the side surfaces of the individual keys of the keypad assembly. The keypad assembly embodying the present invention provides an efficient and low-cost structure for illuminating the keys of a keypad without the use of lightguides or separate sources of light for each key, thereby also providing a desirable low profile keypad assembly.
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