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Package for piezoelectric resonator package, and piezoelectric resonator

A piezoelectric resonator, potential technology, applied in the direction of electrical components, electric solid devices, circuits, etc., can solve the problem of being supported at one end of the degree direction, or it is supported at both ends in the length direction, and achieves a small size. Effect

Active Publication Date: 2009-06-10
DAISHINKU CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, with the package structure disclosed in Patent Document 1, it is possible that the crystal plate is supported only at one end in the length direction, or it is supported at both ends in the length direction, which gives this structure wider applicability

Method used

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  • Package for piezoelectric resonator package, and piezoelectric resonator
  • Package for piezoelectric resonator package, and piezoelectric resonator
  • Package for piezoelectric resonator package, and piezoelectric resonator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0058] A first embodiment according to the present invention will be described below with reference to the drawings by using a surface mount crystal resonator device as an example.

[0059] figure 1 is an exploded perspective view of a surface mount crystal resonator device illustrating a first embodiment, figure 2 yes figure 1 base plan of the , and image 3 yes figure 2 Bottom view of substrate shown. Figure 4 yes figure 2 a plan view of the crystal plate in a state where one end is supported, and Figure 5 yes figure 2 A plan view of a crystal plate in a state where both ends are supported.

[0060] Such as figure 1 As shown, the crystal resonator has a base 1 holding a crystal plate (referred to as a piezoelectric resonator unit in the present invention) 3 with driving electrodes 31 and 32 formed on its front and back sides; and a cap, Used to hermetically seal the crystal plate 3 . More specifically, the crystal resonator according to this first embodiment ...

no. 2 example

[0085] A second embodiment according to the present invention will be described below with reference to the drawings by using a surface mount crystal resonator device as an example. Image 6 is a plan view illustrating the base of the second embodiment, and Figure 7 yes Image 6 Bottom view of substrate shown. The second embodiment differs from the first embodiment only in the starting structures of the terminal electrodes and link electrodes. Therefore, mutually identical parts will be numbered identically, and only their differences will be described. Therefore, all effects and modifications according to the same structure will be the same as those of the first embodiment given above.

[0086] The base 1 is configured such that it has a container 10 that is concave in cross-section, and a glass layer 11a is formed around the reservoir 11 around the notch. Terminal electrodes 12 , 13 , 18 and 19 (the terminal electrodes 18 and 19 are used as dummy connection electrodes) ...

no. 3 example

[0094] A third embodiment according to the present invention will be described below with reference to the drawings by using a surface mount crystal resonator device as an example. Fig. 9 is a plan view illustrating a base of a third embodiment. The third embodiment differs from the first embodiment only in the shape of the base and the avoidance means. Therefore, mutually identical parts will be numbered identically, and only their differences will be described. Therefore, all influences and modifications according to the same structure will be the same parts as those of the third embodiment given above.

[0095] According to the base 1 of this embodiment, for example, made of alumina ceramic material, it comprises a rectangular base bottom in plan view, and a frame whose external dimensions are substantially the same as the base bottom, but has a large opening in its central portion and having a stepped portion laminated at the bottom of the substrate. The layers are stac...

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PUM

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Abstract

A piezoelectric resonator element package has a base that holds a piezoelectric resonator element on which drive electrodes are formed, and a cap. Four electrode pads are formed in corners of an internal bottom surface of the base. Of the four electrode pads, the first electrode pad and second electrode pad have the different potential. The first electrode pad and third electrode pad have the same potential because of a first connecting electrode. The second electrode pad and fourth electrode pad have the same potential because of a second connecting electrode. An avoidance means is provided for avoiding electrical connection between electrode pads that have the different potential (the first electrode pad and second electrode pad) and the other electrode pads that have the same potential (the first electrode pad and third electrode pad, and the second electrode pad and fourth electrode pad).

Description

technical field [0001] The present invention relates to packages for piezoelectric resonator units such as crystal resonators, crystal filters, crystal oscillators, etc. and piezoelectric resonators, and more particularly, to piezoelectric Improvement of package electrode pads to which the electric resonator unit is mounted. Background technique [0002] Examples of electronic components requiring hermetic sealing include crystal resonators, crystal filters, crystal oscillators, and other such piezoelectric resonator devices. For all these products, a metal thin film electrode is formed on the surface of the crystal plate (piezoelectric resonator unit), and hermetic sealing is provided to protect this metal thin film electrode from the outside atmosphere. [0003] Because surface mounting of the components is required, these piezoelectric resonator devices are increasingly being placed hermetically in packages composed of ceramics. For example, Patent Document 1 discloses ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H9/02H01L23/08H03H9/10H10N30/00H10N30/88H01L23/055
CPCH03H9/1014H01L23/055H01L2924/0002H01L2924/00
Inventor 草井强
Owner DAISHINKU CORP