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Preparation method of vibration cavity of plate ceramic frequency device and special platform for adhering it

A technology of frequency devices and vibrating chambers, which is applied in the field of patch workbenches, can solve the problems of restricting product production and development, affecting product performance and pass rate, etc., and achieves the effects of low cost, simple complex process and high efficiency

Inactive Publication Date: 2008-06-04
SHANGHAI NISALIA ELECTRONICS ELEMENT
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Problems solved by technology

The biggest disadvantage of this preparation method is that the positioning accuracy of the pit is affected by the uneven shrinkage of ceramic sintering, and it is impossible to make it very high.
In addition, due to the small size of the product, the diameter of the vibration cavity is generally about 2 to 3 mm. Therefore, it is difficult to accurately align the positions of the pits on the upper and lower ceramic plates. If the positioning of the pits is not accurate, it will directly Affect the performance and qualification rate of the product
And the smaller the product, the bigger the problem, which greatly limits the production and development of the product

Method used

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  • Preparation method of vibration cavity of plate ceramic frequency device and special platform for adhering it
  • Preparation method of vibration cavity of plate ceramic frequency device and special platform for adhering it
  • Preparation method of vibration cavity of plate ceramic frequency device and special platform for adhering it

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Embodiment Construction

[0024] The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:

[0025] As shown in the drawings, the piezoelectric vibration cavity is composed of an upper ceramic plate 1 , a lower ceramic plate 2 , a piezoelectric vibrator 3 and a cavity 4 . The preparation processes of the upper ceramic plate 1 and the lower ceramic plate 2 are basically the same, the difference is that the upper ceramic plate 1 has tin electrodes 5 made by printing.

[0026] The sticky sheet workbench used is by a platform 6, and there is a protruding small platform 8 with many apertures 7 in the middle of the platform, and the protrusion of the small platform is to take and put for convenience of sticky paper and ceramic sheet. There are three positioning pins 9 on the two mutually perpendicular sides of the small platform, two of which are close to the long side, and one is close to the short side. There is an air extraction device ...

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Abstract

This invention discloses a preparation method for an oscillating cavity of a sheet piezoelectric ceramic frequency device and a specific sheeting stand characterizing in taking sticking paper as the mask of a ceramic board and forming pits on it by sand to avoid influence to the pit accuracy due to the uneven contraction in the process of the ceramic board sintering. The preparation is carried out on a special working stand to ensure the accuracy of the pits and the bind accuracy of the ceramic board and piezoelectric vibrator ensures the accuracy of the oscillating cavity.

Description

technical field [0001] The invention relates to a preparation method of a ceramic frequency device, in particular to a preparation method of a vibration cavity of a chip-type piezoelectric ceramic frequency device and a patch workbench used in the realization method. Background technique [0002] Piezoelectric ceramic frequency devices are mainly used in communication, television, computer, industrial automation and other fields, where they are used to generate time-base oscillation frequency or select frequency. [0003] Piezoelectric ceramic frequency devices are made using the principle that piezoelectric ceramics will generate mechanical vibrations under the action of an alternating electric field. Therefore, it is not affected by external electromagnetic interference. In use, there is no need for complex shielding to prevent electromagnetic interference like other frequency components. It is of great significance to the miniaturization and integration of electronic pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H3/02
Inventor 陈以公姚一滨
Owner SHANGHAI NISALIA ELECTRONICS ELEMENT
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