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:
Nov. 19, 2019
Filed:
Dec. 16, 2016
Dai-ichi Seiko Co., Ltd., Kyoto-shi, Kyoto, JP;
DAI-ICHI SEIKO CO., LTD., Kyoto, JP;
Abstract
An array speaker device (A) includes a vibrator () arranged on one face of a substrate having a uniform thickness, the vibrator being formed of a base material layer (), a first electrode layer (), a piezoelectric element layer (), and a second electrode layer (), each of which has a uniform thickness, and which are layered in the order mentioned on the substrate. A hole through which a sound wave is outputted in the thickness direction of the substrate is provided on the substrate at a position corresponding to the vibrator (), the sound wave being generated by vibration of the vibrator () to which a voltage signal is applied via the first electrode layer () and the second electrode layer (). Scallops (S) made of an indentation and a projection alternating in the thickness direction of the substrate are formed on the inner circumferential wall of the hole.