FORCE SENSOR PATTERNS
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United States of America Patent
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Issued Date -
Aug 31, 2017
app pub date -
Feb 29, 2016
filing date -
Feb 29, 2016
priority date (Note) -
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Abstract
The present disclosure provides a capacitive sensing structure for detecting a force touch in a touchscreen application. Performance uniformity of the force touch sensor is improved by providing a capacitive force touch structure having sensing electrodes of varying thickness, wherein the variation in electrode thickness corresponds to a relative displacement potential of portions of the sensing electrode. This variation in thickness improves performance uniformity of the force sensor by compensating for the displacement potential (i.e., flexibility) of the sensing electrodes so that a force touch applied to the touch surface is measured consistently regardless of the location of the force touch on the touch surface.
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