Pressure sensitive transducer with pressure sensitive layer including semi-conductive particles
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United States of America Patent
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Sep 19, 2000
Grant Date -
N/A
app pub date -
Jun 29, 1999
filing date -
Jul 28, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Pressure sensitive layers are disposed on respective resin films through electrodes to face each other, and include high conductivity flaky carbon particles and low conductivity amorphous-based carbon particles. The two kinds of carbon particles are bound together by a resin-system binder. Accordingly, when a pushing force is applied to the resin films, an average distance between the carbon particles is decreased to cause a tunnel conduction phenomenon, resulting in a decrease in conductive resistance between the electrodes. As a result, a pressure sensing property can be made gentle.
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