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, 2013
Filed:
Mar. 17, 2009
Kazuo Murata, Saitama, JP;
Kazuhiro Toriumi, Nagano, JP;
Toshiya Kubo, Nagano, JP;
Takashi Maruyama, Nagano, JP;
Tomoyuki Nakazawa, Nagano, JP;
Taichi Tsuchiya, Nagano, JP;
Izumi Yamamoto, Saitama, JP;
Akiko Katoh, Tokyo, JP;
Sadao Horiuchi, Saitama, JP;
Hiroshi Miyauchi, Saitama, JP;
Isao Arai, Saitama, JP;
Akihiro Shioji, Tokyo, JP;
Tomoo Ikeda, Saitama, JP;
Maki Takizawa, Saitama, JP;
Keisuke Kigawa, Saitama, JP;
Kazuo Murata, Saitama, JP;
Kazuhiro Toriumi, Nagano, JP;
Toshiya Kubo, Nagano, JP;
Takashi Maruyama, Nagano, JP;
Tomoyuki Nakazawa, Nagano, JP;
Taichi Tsuchiya, Nagano, JP;
Izumi Yamamoto, Saitama, JP;
Akiko Katoh, Tokyo, JP;
Sadao Horiuchi, Saitama, JP;
Hiroshi Miyauchi, Saitama, JP;
Isao Arai, Saitama, JP;
Akihiro Shioji, Tokyo, JP;
Tomoo Ikeda, Saitama, JP;
Maki Takizawa, Saitama, JP;
Keisuke Kigawa, Saitama, JP;
Citizen Holdings Co., Ltd., Tokyo, JP;
Abstract
A piezoelectric device has a piezoelectric vibration element mounted in a package wherein the piezoelectric vibration element comprises two stick-like vibration legs; a central leg provided between the two vibration legs; a coupling portion that couples one end of each of the two vibration legs and one end of the central leg; and a protrusion portion that is coupled to another end of the central leg, has a predetermined angle, neither 0 nor 180 degrees, to the length direction of the central leg, and extends into a direction not interfering with the driving legs. In making the piezoelectric device smaller and thinner, this configuration avoids interference between a support point on the central leg, provided for supporting the vibration element, and conductive electrodes, improves insulation between the conductive electrodes, and reduces the generation of short-circuits between the conductive electrodes.