Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CRYSTAL OSCILLATION ELEMENT, CRYSTAL OSCILLATION DEVICE, AND METHOD FOR MANUFACTURING CRYSTAL OSCILLATION ELEMENT
Document Type and Number:
WIPO Patent Application WO/2018/021296
Kind Code:
A1
Abstract:
An oscillation element comprises a crystal piece, a pair of excitation electrodes, and a pair of pad portions. The crystal piece includes a pair of main surfaces, and a side surface which connects the outer edges of the pair of main surfaces, and which at least partly comprises a crystal surface. The crystal piece also includes a mesa portion and an outer peripheral portion which surrounds the mesa portion in plan view and which is thinner than the mesa portion between the pair of main surfaces. The pair of excitation electrodes are respectively positioned on the pair of main surfaces in the mesa portion. The pair of pad portions are positioned on one of the pair of main surfaces in the outer peripheral portion, and are electrically connected to the pair of excitation electrodes. The crystal piece includes a protruding portion which, in an edge portion of the pair of main surfaces in contact with the crystal surface, protrudes from the outer peripheral portion by a height of not more than a height of the mesa portion from the outer peripheral portion.

Inventors:
MIYAZAKI, Shiro (6 Takeda Tobadono-cho, Fushimi-ku, Kyoto-sh, Kyoto 01, 〒6128501, JP)
GOTO, Masahiko (6 Takeda Tobadono-cho, Fushimi-ku, Kyoto-sh, Kyoto 01, 〒6128501, JP)
KAWAGUCHI, Yoshiyuki (6 Takeda Tobadono-cho, Fushimi-ku, Kyoto-sh, Kyoto 01, 〒6128501, JP)
HAYASHI, Hiroshi (6 Takeda Tobadono-cho, Fushimi-ku, Kyoto-sh, Kyoto 01, 〒6128501, JP)
Application Number:
JP2017/026840
Publication Date:
February 01, 2018
Filing Date:
July 25, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KYOCERA CORPORATION (6 Takeda Tobadono-cho, Fushimi-ku Kyoto-sh, Kyoto 01, 〒6128501, JP)
International Classes:
H03H9/19; H03H3/02
Attorney, Agent or Firm:
IIJIMA, YASUHIRO (Sohshin International Patent Office, SS building 2F 4-2, Nishi-Shinbashi 3-chome, Minato-k, Tokyo 03, 〒1050003, JP)
Download PDF: