Capacitive sensor
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United States of America Patent
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Jul 30, 2002
Grant Date -
N/A
app pub date -
Apr 16, 1999
filing date -
Apr 17, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A capacitive sensor is described which includes a first electrode remote from a second electrode, wherein the first electrode and the second electrode form a measurement capacitance. The first electrode is arranged on a first substrate member and the second electrode is arranged on a second substrate member. At least one of the electrodes has a spatially resolved structure which allows a spatially resolved measurement of the capacitance. The spatial structure of the electrode may be implemented in form of several mutually parallel stripe-shaped elements or in form of a plurality of spaced-apart elements that are arranged in a two-dimensional pattern. Associated with the electrodes are electronic processing units integrated in the substrate members.
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