Three-dimensional grip detection sensor
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United States of America Patent
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Jul 27, 2021
Grant Date -
Apr 30, 2020
app pub date -
Dec 20, 2019
filing date -
Jul 19, 2017
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Abstract
A three-dimensional grip detection sensor is provided that includes an outer wall. When a first region in the outer wall receives pressing operation, it undergoes first deformation recessed inward from the outer wall, and a second region undergoes second deformation opposite to first deformation and that projects outward from the outer wall. The three-dimensional grip detection sensor further includes a three-dimensional object that receives pressing operation, with a first sensor disposed on an outer wall and a second sensor disposed at a position asymmetric to the first sensor. Each of the first and second sensors includes a piezoelectric film deformed by the pressing operation, first and second electrodes on a first main surface of the piezoelectric film and disposed in parallel with the first electrode, and a reference electrode on a second main surface of the piezoelectric film.
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