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. 04, 2008
Filed:
Nov. 29, 2006
Hiroaki Kaida, Moriyama, JP;
Hitoshi Sakaguchi, Toyama, JP;
Takashi Hase, Yasu, JP;
Jiro Inoue, Omihachiman, JP;
Hiroaki Kaida, Moriyama, JP;
Hitoshi Sakaguchi, Toyama, JP;
Takashi Hase, Yasu, JP;
Jiro Inoue, Omihachiman, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
An energy-trapping-type thickness extensional piezoelectric resonator using a thickness extensional vibration mode having first and second resonance electrodes formed on portions of the top surface and the bottom surface of a piezoelectric substrate that is polarized in the thickness direction thereof, respectively, in which a portion where the first and second resonance electrodes oppose each other is formed as an energy-trapping-type vibration section, wherein, in order to suppress frequency changes of the thickness extensional vibration mode due to temperature, which is a main response using resonance characteristics, a suppression response having a frequency-temperature-change tendency for suppressing frequency changes of the main response due to temperature is brought into close proximity with the main response.