Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
RESONATOR AND RESONATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/208568
Kind Code:
A1
Abstract:
The present invention inhibits a resonance frequency from being impacted by an electric charge charged to an insulator layer on a resonator or a conductive layer on the insulator layer. The present invention comprises: a first electrode; a second electrode; a piezoelectric film which is provided between the first electrode and the second electrode and has an upper surface facing the first electrode, the piezoelectric film oscillating in a predetermined oscillation mode when voltage is applied between the first electrode and the second electrode; a protective film comprising an insulator and provided facing the upper surface of the piezoelectric film with the first electrode therebetween; and a conductive film comprising a conductor and provided facing the upper surface of the piezoelectric film with the protective film therebetween, the conductive film being electrically connected to one of the first electrode and the second electrode.

Inventors:
YOSHII, Kentaro (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
GOTO, Yuichi (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
TAKEYAMA, Keisuke (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
NISHIMURA, Toshio (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
MORINAGA, Shungo (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
KAWAI, Ryota (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
INOUE, Yoshihisa (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2017/010605
Publication Date:
December 07, 2017
Filing Date:
March 16, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H03H3/04; H03H9/02; H03H9/24
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (TMI ASSOCIATES, 23rd Floor Roppongi Hills Mori Tower, 6-10-1, Roppongi, Minato-k, Tokyo 23, 〒1066123, JP)
Download PDF: