System including piezoelectric capacitor assembly having force-measuring, touch-sensing, and haptic functionalities

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United States of America Patent

PATENT NO 12022737
APP PUB NO 20210242393A1
SERIAL NO

17161591

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Abstract

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A system includes a piezoelectric capacitor assembly and signal processing circuitry coupled to the piezoelectric capacitor assembly. The piezoelectric capacitor assembly includes a piezoelectric member and piezoelectric capacitors located at respective lateral positions along the piezoelectric member. Each piezoelectric capacitor includes: (1) a respective portion of the piezoelectric member, (2) a first electrode, and (3) a second electrode. The first and second electrodes are positioned on opposite side of the piezoelectric member. The piezoelectric capacitors include piezoelectric force-measuring elements (PFEs). The PFEs are configured to output voltage signals between the respective first electrode and the respective second electrode in accordance with a time-varying strain at the respective portion of the piezoelectric member between the respective first electrode and the respective second electrode resulting from a low-frequency mechanical deformation. The signal processing circuitry is configured to read at least some of the PFE voltage signals.

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Patent Owner(s)

  • ULTRASENSE SYSTEMS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akhbari, Sina San Jose, US 27 285
Maghsoudnia, Mo San Jose, US 18 223
Tang, Hao-Yen San Jose, US 47 842

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