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:
May. 25, 1999
Filed:
Jun. 14, 1996
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
A piezoelectric element comprises a metallic plate-shaped diaphragm, a plate-shaped piezoelectric body, and electrodes provided on both surfaces of the piezoelectric body, wherein one electrode is fixed to a main surface of the diaphragm. An extension electrode is extended onto a projection projecting from the diaphragm while it is insulated from the diaphragm. The extension electrode is extended from the diaphragm to the projection while it is insulated from the diaphragm. The extension electrode is electrically connected to the electrode which is not fixed to the diaphragm of the piezoelectric body. The piezoelectric element is attached to a case while allowing a main surface of the projection on which the extension electrode is provided to be directed outward. The case is fixed inside a housing of an electronic device, and the projection and the extension electrode are respectively electrically connected to circuit patterns of a printed circuit board mounted inside the housing by way of conductive portions provided on an elastic connection block. With such an arrangement, the case attaching the piezoelectric element thereto can be easily fixed to the electronic device and is easily connected to a circuit without trouble.