Touch type input device having a piezoelectric sensor connected to a displacement detector and a sound emission controller by a switch
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United States of America Patent
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Feb 28, 2017
Grant Date -
Jul 2, 2015
app pub date -
Mar 16, 2015
filing date -
Sep 17, 2012
priority date (Note) -
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Abstract
A touch panel having a piezoelectric sensor and an electrostatic sensor that are integrally formed. The piezoelectric sensor is connected to a displacement detector and a sound emission amplifier through a relay switch. A controller performs switch control on the relay switch. The piezoelectric sensor emits sound while the sound emission amplifier and the piezoelectric sensor are connected to each other by the relay switch. When the operation input is detected through the electrostatic sensor and the touch position detector, the controller performs the switch control on the relay switch to connect the piezoelectric sensor to the displacement detector. A detection voltage is input from the piezoelectric sensor to the displacement detector to also detect the pressing amount.
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