Piezoelectric laminate element, and load sensor and power supply using same

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United States of America Patent

PATENT NO 11417825
APP PUB NO 20190341541A1
SERIAL NO

16462379

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a piezoelectric laminate element that outputs a fixed output voltage even in response to a static load for which an output voltage could not be obtained using a conventional piezoelectric element. A piezoelectric laminate body in which a plurality of piezoelectric polymer film layers consisting of film such as polylactic acid film that exhibits piezoelectricity in the planar direction are laminated is used as a piezoelectric laminate element. The piezoelectric laminate body is given a cylindrical shape, rounded rectangle shape, or other partially curved shape. The output voltage follows the increase and decrease of the applied load, and if a fixed load is continuously applied, a fixed output voltage is continuously output, and a piezoelectric laminate element is obtained that outputs a fixed output voltage even if a load is static.

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Patent Owner(s)

  • MURATA MANUFACTURING CO LTD.; A SCHOOL CORPORATION KANSAI UNIVERSITY; PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kato, Atsuko Osaka-fu, JP 3 12
Shimasaki, Yukihiro Hyogo-ken, JP 50 305
Tajitsu, Yoshiro Osaka-fu, JP 31 454
Takeoka, Hiroki Nara-ken, JP 33 334
Yoshida, Tetsuo Tokyo-to, JP 132 1361

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