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:
Oct. 15, 2024
Filed:
Nov. 20, 2018
Nitto Denko Corporation, Ibaraki, JP;
Yusuke Komoto, Osaka, JP;
Kohei Oto, Osaka, JP;
Saori Yamamoto, Osaka, JP;
Ryohei Oban, Osaka, JP;
Tomoaki Hishiki, Osaka, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
A piezoelectric speaker () includes a piezoelectric film (), a first joining layer (), and an interposed layer (). The piezoelectric film () includes a first electrode (), a second electrode (), and a piezoelectric body () sandwiched by the first electrode () and the second electrode (). The first joining layer () is a layer having pressure-sensitive adhesiveness or adhesiveness. The interposed layer () is disposed between the piezoelectric film () and the first joining layer (). Both principal surfaces of the piezoelectric film () vibrate up and down as a whole.