PIEZOELECTRIC VIBRATION DEVICE, AND JOINING STRUCTURE BETWEEN PIEZOELECTRIC VIBRATION DEVICE AND CIRCUIT BOARD

Title:

PIEZOELECTRIC VIBRATION DEVICE, AND JOINING STRUCTURE BETWEEN PIEZOELECTRIC VIBRATION DEVICE AND CIRCUIT BOARD

Document Type and Number:

WIPO Patent Application WO/2015/102080

Kind Code:

A1

Abstract:

[Problem] To enable the two main surfaces of a second sealing member to be electrically connected via through-holes while minimizing costs in a piezoelectric vibration device for a sandwich structure. [Solution] A crystal oscillator (101), provided with: a crystal vibration plate (2); a first sealing member (3) covering the first excitation electrode (221) of the crystal vibration plate (2); one external electrode terminal (431) covering the second excitation electrode (222) of the crystal vibration plate (2), the one external electrode terminal (431) being connected to the circuit board (61) using an electroconductive joining fluid (62); and the second sealing member (4), in which another external electrode terminal (432) is formed. A second through hole (441) and a third through hole (442) penetrating between one main surface (411) and the other main surface (412) are formed in the second sealing member (4). The one external electrode terminal (431) and the other external electrode terminal (432) are formed on the other main surface (412). Each of the second through hole (441) and the third through hole (442) has a penetrating portion (72), and has a through electrode (71) for electrically connecting electrodes formed on the one main surface (411) and the other main surface (412).

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Inventors:

IIZUKA MINORU (JP)
KOJO TAKUYA (JP)

Application Number:

PCT/JP2014/083995

Publication Date:

July 09, 2015

Filing Date:

December 22, 2014

Export Citation:

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Assignee:

DAISHINKU CORP (JP)

International Classes:

H03H9/02; H01L23/02; H01L23/08; H03B5/32

Foreign References:

JPS63104512A	1988-05-10
JP2011142374A	2011-07-21
JP2011009973A	2011-01-13

Attorney, Agent or Firm:

ARC PATENT ATTORNEYS' OFFICE (JP)
Patent business corporation ARC PATENT ATTORNEYS' OFFICE (JP)

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