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Method For Fabricating Piezoelectric Device

A technology for piezoelectric devices and manufacturing methods, applied to circuits, piezoelectric/electrostrictive/magnetostrictive devices, electrical components, etc., capable of solving problems such as poor contact between lead terminals and substrates

Inactive Publication Date: 2014-09-10
NIHON DEMPA KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the lead terminals of the piezoelectric vibrator as disclosed in Patent Document 1, there is a problem that one of the lead terminals is not in good contact with the substrate due to differences in length between the lead terminals.

Method used

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  • Method For Fabricating Piezoelectric Device
  • Method For Fabricating Piezoelectric Device
  • Method For Fabricating Piezoelectric Device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0055] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In addition, there is no description intended to limit the present invention in particular in the following description, and the scope of the present invention is not limited to these embodiments.

[0056]

[0057] figure 1 is a schematic cross-sectional view of the piezoelectric device 100 . The piezoelectric device 100 mainly includes: a piezoelectric vibrator 110; a printed substrate 120 on which the piezoelectric vibrator 110 is placed; a base plate 140 on which the printed substrate 120 is placed; and a cover 130 covering the piezoelectric vibrator. The vibrator 110 and the printed substrate 120 . In the following description, the long-side direction of the piezoelectric vibrator 110 on the printed circuit board 120 is defined as the X-axis direction, and the short-side direction of the piezoelectric vibrator 110 on the printed circuit board 120, that is, the di...

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PUM

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Abstract

A method for fabricating a piezoelectric device is provided. A piezoelectric resonator is mounted on a solder applied over a surface of a substrate. The piezoelectric resonator includes a metal case and at least a pair of lead terminals extracted from the metal case. The lead terminal includes a first part, a second part, and a third part. The method includes: an applying step of applying solder cream at a case region and a lead region of a surface of the substrate, the case region corresponding to the metal case, the lead region corresponding to the third part; a setting step of placing a block solder with a smaller area than an area of the case region at the case region; an arranging step of arranging the metal case of the piezoelectric resonator to the case region, and arranging the third part to the lead region; and a heating step of heating the substrate and the piezoelectric resonator in a reflow furnace.

Description

technical field [0001] The present invention relates to a manufacturing method of a piezoelectric device (piezoelectric device) in which a piezoelectric vibrator (piezoelectric vibrator) is mounted on a printed board (printed board). Background technique [0002] A piezoelectric device is known in which a piezoelectric vibrator having a predetermined vibration frequency is bonded to a printed circuit board via solder. Such piezoelectric devices include, for example, an oven-controlled piezoelectric oscillator (OCXO: Oven Controlled Xtal Oscillator). Oven Oven Piezoelectric Oscillators (OCXO) are used as a reference signal source for Global Position System (GPS) frequency generators or base stations for mobile terminals. Stable oscillation output can be ensured even in harsh environments such as fluctuations or high temperature and humidity. For example, Patent Document 1 discloses a piezoelectric vibrator with a constant temperature bath in which lead terminals of the piez...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H3/02H10N30/063
CPCH03H9/0504H03H9/0509Y10T29/42H03H9/1014H01L41/293H10N30/063
Inventor 内田刚史吉村崇弘
Owner NIHON DEMPA KOGYO CO LTD