Sensor-integrated illuminated key sheet
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United States of America Patent
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Oct 7, 2014
Issued Date -
N/A
app pub date -
Dec 21, 2010
filing date -
Dec 28, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
There is provided a technique which can reduce the entire thickness of a push-button switch while securing the brightness of the illumination and can increase the sensitivity and accuracy of a slide input. Use of a light guide sheet separating from a surface-type capacitance sensor is excluded, thereby being able to reduce the entire thickness of a sensor-integrated illuminated key sheet while a light guide sheet serves to secure the brightness of the illumination. A surface sheet is provided so as to contact the operation surface side of the light guide sheet as the substrate of the surface-type capacitance sensor. The distance between the operation surface of the surface sheet and the surface-type capacitance sensor can therefore decrease, which can enhance the sensitivity and accuracy of the slide input.
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