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Title:
CRYSTAL UNIT
Document Type and Number:
WIPO Patent Application WO/2007/032444
Kind Code:
A1
Abstract:
A crystal oscillation plate consists of a rectangular planar AT cut crystal oscillation element operating in thickness slip oscillation and a pair of excitation electrodes are formed oppositely on the front and rear surfaces thereof. These excitation electrodes are formed to have a quadrilateral plan view and mass regulating portions are formed on at least two opposing sides of respective excitation electrodes formed on the front and rear surfaces.

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Inventors:
MAEDA HIROSHI (JP)
Application Number:
PCT/JP2006/318286
Publication Date:
March 22, 2007
Filing Date:
September 14, 2006
Export Citation:
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Assignee:
DAISHINKU CORP (JP)
MAEDA HIROSHI (JP)
International Classes:
H03H9/19; H01L41/09; H01L41/18
Foreign References:
JPH04276915A1992-10-02
JPH1098351A1998-04-14
JPS62118627A1987-05-30
Attorney, Agent or Firm:
KURAUCHI, Giro (14-3 Nishitemma 4-chome, Kita-k, Osaka-shi Kagawa 47, JP)
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