The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2025
Filed:
Sep. 10, 2021
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Takashi Aiba, Nagoya, JP;
Keiji Kura, Chita, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
There is provided piezoelectric actuator including: vibration plate; first and second piezoelectric layers; a plurality of individual electrodes arranged on actuator surface, of the second piezoelectric layer, on first side in first direction of the second piezoelectric layer; first and second common electrodes; first surface electrode arranged on the actuator surface at an end portion in second direction orthogonal to the first direction; second surface electrode arranged on the actuator surface; and non-conductive electrodes arranged at end portions in the second direction of at least two of the actuator surface, and the first and second boundary surfaces, and which are not in conduction with any of the individual electrodes, and the first and second common electrodes. The non-conductive electrodes are arranged at least in an area of an end portion in the second direction of a stack of the vibration plate, and the first and second piezoelectric layers.