Quartz crystal resonator and processing method thereof

A quartz crystal and processing method technology, applied in the direction of electrical components, impedance networks, etc., can solve the problems of increasing the processing and manufacturing cost of resonators, difficult to achieve welding and fixing, and high power of laser welding torch, so as to achieve low matching tolerance, reduce processing and manufacturing costs, The effect of reducing manufacturing costs

Pending Publication Date: 2018-01-26
HEFEI JINGWEITE ELECTRONICS CO LTD
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  • Claims
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Problems solved by technology

This method of molten pool sealing and welding not only requires a higher power of the laser torch (because it needs to melt through the metal cover plate), but also requires the contact surface between the metal cover plate and the metal Kovar ring to be extremely smooth without gaps. When the flatness of the plate is d

Method used

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  • Quartz crystal resonator and processing method thereof
  • Quartz crystal resonator and processing method thereof
  • Quartz crystal resonator and processing method thereof

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Embodiment 2

[0045] Such as Picture 9 As shown, the metal Kovar ring 3 includes an integral inner ring and an outer ring, the top surface of the metal Kovar ring 3 is stepped, and the height of the inner ring of the metal Kovar ring 3 is lower than that of the outer ring. The height of the top surface of the ring, the metal cover plate 4 is arranged on the top surface of the inner ring of the metal Kovar ring 3, and a gap is provided between the inner wall of the outer ring of the metal Kovar ring 3 and the outer wall of the metal cover plate 4.

[0046] Specifically, the inner ring and the outer ring are actually a whole, only the height of the top surface is different.

[0047] Such as Figure 7 , 8 As shown in 9, the metal Kovar ring 3 in this embodiment is arranged on the upper part of the base 1. The outer circumferential size of the metal cover plate 4 is smaller than the inner size of the outer ring of the metal Kovar ring 3 and larger than the inner size of the inner ring of the metal...

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Abstract

The invention belongs to the field of the electronic components, and specifically relates to a quartz crystal resonator and a processing method thereof. The quartz crystal resonator comprises a base,a wafer, a metal kovar ring and a metal cover plate, wherein the wafer is arranged in the base; the metal kovar is sintered at the gate of the base; the metal cover plate is held in an intra-ring region formed by the metal kovar ring and placed at the gate of the base; and the metal cover plate is fixedly connected with the metal kovar ring through laser slit bonding. The processing method disclosed by the invention comprises the following steps: S1, crystal sorting; S2, crystal cutting; S3, crystal grinding; S4, polishing, S5, chemical corrosion; S6, crystal silver-plating; and S7, encapsulating and forming, thereby obtaining the quartz crystal resonator. The quartz crystal resonator disclosed by the invention adopts a brand-new structure, the structure reduces the processing precision onthe metal cover plate and the metal kovar ring; the welding technology becomes simple and efficient, and the processing manufacturing cost of the resonator is obviously reduced.

Description

Technical field [0001] The invention belongs to the field of electronic components, and specifically relates to a quartz crystal resonator and a processing method thereof. Background technique [0002] The quartz crystal resonator is a piezoelectric device made of piezoelectric quartz (ie, crystal). It not only has highly stable physical and chemical properties, but also has extremely low elastic vibration loss. Compared with other electronic components, piezoelectric quartz crystal also has a high frequency stability and high Q value, making it an important component for frequency stabilization and frequency selection. [0003] In the prior art, the metal cover plate and the metal Kovar ring are welded and fixed by means of molten pool sealing, that is, the metal cover plate is pressed on the metal Kovar ring, and then the metal cover plate is melted through with a laser welding gun The welding connection between the metal cover plate and the metal Kovar ring is realized. This m...

Claims

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Application Information

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IPC IPC(8): H03H3/02H03H9/19
Inventor 查晓兵陈维彦董书霞潘小龙汪鑫曾丽军许韦
Owner HEFEI JINGWEITE ELECTRONICS CO LTD
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