Piezoelectric sensor including overlapping cutout sections in a signal electrode, a first ground electrode, and a second electrode
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United States of America Patent
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Sep 8, 2020
Grant Date -
Jun 2, 2016
app pub date -
Jul 4, 2014
filing date -
Jul 10, 2013
priority date (Note) -
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Abstract
A piezoelectric sensor including: a piezoelectric sheet; a first ground electrode integrally laminated on a first side of the piezoelectric sheet and having a first cutout section; a signal electrode integrally laminated on a second side of the piezoelectric sheet and having a third cutout section; and a second ground electrode integrally laminated on the signal electrode so as to be electrically insulated from the signal electrode and having a second cutout section. The cutout sections of the signal electrode, the first ground electrode, and the second ground electrode are at least partially overlapped with one another in a thickness direction of the piezoelectric sheet. A portion of the piezoelectric sheet exposed from a portion where the cutout sections of the signal electrode, the first ground electrode, and the second ground electrode are overlapped with one another serves as an exposed section.
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