Arrangement for integration of key illumination into keymat of portable electronic devices
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 9, 2004
Grant Date -
N/A
app pub date -
Aug 17, 2000
filing date -
Aug 17, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An integrated keymat or keyboard to be used on an electronic device. The integrated keymat includes a plurality of individual emissive keypads each having a legend or symbol provided thereon. The emissive keypad has a light-emitting source and a plurality of electrodes, operatively connected to a power source, to activate the light-emitting source in order to illuminate the keypads, wherein the connection of the electrodes is controllable so that one or more keypads can be illuminated causing the key indicating marks on said one or more keypads to become more visible. Furthermore, the light-emitting source may include a plurality of segments of pixels which are individually addressable so that they can be selectively activated to form an alphanumeric symbol or pattern. Moreover, the integrated keymat further comprises one or more lens-like pads provided on the keypads to make the legend or symbol on the keypads more visible.
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