DETECTION SENSOR AND DETECTION SENSOR FABRICATION METHOD
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United States of America Patent
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Dec 15, 2014
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Dec 18, 2013
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There is provided a technology making it possible to improve operability and reliability of a detection sensor. A detection sensor detecting a pressing state on an operation surface in a pressing direction, includes: a first electrode layer and a second electrode layer both configured to detect variation in electrostatic capacitance; and a displacement layer provided between the first electrode layer and the second electrode layer, the displacement layer being adapted to vary a distance between the first electrode layer and the second electrode layer in response to pressing of the operation surface, in which the displacement layer includes a rubbery elastic body and includes a plurality of columnar parts each stretchable in the pressing direction, one or both of a surface of the first electrode layer facing the displacement layer and a surface of the second electrode layer facing the displacement layer are provided with a bonding layer that is configured of a rubbery elastic layer or a coating layer containing a silane compound, and the columnar parts are integrally bonded to the bonding layer.
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