Piezoelectric vibration device and sip module including same
A piezoelectric vibration and device technology, which is applied in electric solid devices, piezoelectric/electrostrictive/magnetostrictive devices, electrical components, etc., and can solve problems such as difficulty in setting shielding electrodes
Pending Publication Date: 2019-05-03
DAISHINKU CORP
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- Application Information
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Problems solved by technology
However, in the surface mount type piezoelectric vibration device, since the mounting terminal for mounting on the circuit board is formed on the bottom surface of the device, it is difficult to provide a shield electrode for preventing capacitive coupling.
Method used
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Embodiment Construction
[0046] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0047] figure 1 It is a schematic configuration diagram schematically showing a crystal oscillator 101 as a piezoelectric vibration device according to the present invention. In the following description, an example is given in which the crystal oscillator 101 including an IC chip as a constituent element is used as a piezoelectric vibration device, but the present invention is not limited thereto. The piezoelectric vibration device according to the present invention also includes a crystal resonator that does not include an IC chip as a constituent element.
[0048] The crystal oscillator 101 according to the embodiment of the present invention is as figure 1As shown, a crystal vibrating piece (piezoelectric vibrating plate) 2 , a first sealing member 3 , and a second sealing member 4 are provided. In the crystal oscillator 101 , the crystal vibrating piec...
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This crystal oscillator (101) is provided with: a piezoelectric vibration plate (2), in which a first excitation electrode and a second excitation electrode are formed; a first sealing member (3) forcovering the first excitation electrode of the piezoelectric vibration plate (2); and a second sealing member (4) for covering the second excitation electrode of the piezoelectric vibration plate (2),wherein the first sealing member (3) and the piezoelectric vibration plate (2) are joined, and the second sealing member (4) and the piezoelectric vibration plate (2) are joined, thereby forming an internal space (13) in which a vibration part, of the piezoelectric vibration plate (2) having the first excitation electrode and the second excitation electrode, is tightly sealed. On the outer surface (one main surface (311)) of the first sealing member (3), an electrode pattern (371) including a mounting pad for wire bonding is formed.
Description
technical field [0001] The present invention relates to a piezoelectric vibration device such as a crystal oscillator and a SIP module equipped with the same. Background technique [0002] In recent years, various electronic devices are developing towards higher operating frequencies and miniaturization (especially lower profile) of packages. Accordingly, piezoelectric vibration devices (for example, crystal resonators, crystal oscillators, etc.) are required to be able to cope with high frequency and small packages along with high frequency and small packages. [0003] The casing of the above-mentioned piezoelectric vibration device is composed of an approximately rectangular parallelepiped package. The package includes, for example, a first sealing member and a second sealing member made of glass or quartz crystal, and a piezoelectric vibrating reed made of, for example, quartz crystal and having excitation electrodes formed on both main surfaces, the first sealing member...
Claims
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IPC IPC(8): H03B5/32H01L23/04H01L25/00H03H9/02
CPCH03B5/32H01L23/04H01L25/00H03H9/0595H03H9/1035H03H9/0547H01L2224/26175H03H9/0523H03H9/178H03H9/02H10N30/87H10N30/071H10N30/88H10N30/706
Inventor 古城琢也
Owner DAISHINKU CORP