CN101662270A - Quartz-crystal resonator - Google Patents
Quartz-crystal resonator Download PDFInfo
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- CN101662270A CN101662270A CN200910190132A CN200910190132A CN101662270A CN 101662270 A CN101662270 A CN 101662270A CN 200910190132 A CN200910190132 A CN 200910190132A CN 200910190132 A CN200910190132 A CN 200910190132A CN 101662270 A CN101662270 A CN 101662270A
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Abstract
The invention relates to a quartz-crystal resonator, comprising a base, an upper cover and a quartz crystal. The base and the upper cover form a crystal containing space. The quartz crystal is sealedin the containing space. The quartz crystal is provided with a connecting pole. The base is provided with an external connecting terminal. The connecting pole is electrically connected to the externalconnecting terminal. The base is a PCB board. Adhesive agent is provided at the joint of the upper cover and the base. The quartz-crystal resonator of the invention adopts a PCB board as base and uses ceramic or plastic materials as upper cover. The upper cover is adhered with the base. Compared with the current quartz-crystal resonator formed by sealing a metallic ceramic base with a metallic upper cover, the invention greatly decreases the cost of the quartz-crystal resonator, decreases the processing difficulty. The quartz-crystal resonator of the invention is significant.
Description
Technical field
The present invention relates to quartz-crystal resonator, more particularly, relate to a kind of SMD quartz-crystal resonator (Surface Mounted Devices surface mount device).
Background technology
Quartz-crystal resonator is called quartz crystal again, is commonly called as crystal oscillator, is to utilize the piezoelectric effect of quartz crystal and the resonant element made, and it uses with semiconductor device and Resistor-Capacitor Unit, just can constitute quartz oscillator.Quartz oscillator is the oscillator of high accuracy and high stability, be widely used in all kinds of oscillating circuits such as colour TV, computer, remote controller, and be used for frequency generator in the communication system, provide reference signal for the data processing equipment clocking with for particular system.
On surface-mounted integrated circuit, often can use SMD quartz-crystal resonator (Surface MountedDevices surface mount device); shown in Fig. 1 a～Fig. 1 c; 1 this class SMD quartz-crystal resonator 10 generally comprises base of ceramic 11, metal top cover 12 and quartz crystal 13.Base of ceramic 11 forms seal cavity 111 with metal top cover 12 by the welding of roll welding equipment, and quartz crystal 13 is positioned at sealing space 111.Base of ceramic 11 can cut down ring (KOVAR) 14 by metal and form with the ceramic body soldering by silver-bearing copper welding material 15, and first external terminal 17 connects circuit 16 with second external terminal 18 by metallization circular hole side and connects.The shortcoming of the SMD quartz-crystal resonator of this structure is:
1, metal top cover and metallized ceramic pedestal cost are higher, and the metallized ceramic pedestal only has Japanese several company to provide, hold at high price and supply controlled;
2, the welding of metal top cover and metallized ceramic pedestal needs special-purpose roll welding equipment, cost an arm and a leg and dependence on import, and roll welding equipment requires quite strict to operating parameters such as roll welding electric current, pressure, speed, be easy to cause product to leak waste products such as weldering or the gas leakage of pedestal pressure break, operative skill to the operating personnel requires than higher, entire product preparation process complexity, production cost is higher.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned defective of the quartz-crystal resonator of prior art, provide a kind of cost low, make simple quartz-crystal resonator.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of quartz-crystal resonator, comprise pedestal, loam cake and quartz crystal, constitute a crystal accommodation space between described pedestal and the loam cake, described quartz crystal sealing is in described accommodation space, described quartz crystal has connection electrode, described pedestal has external terminal, described connection electrode is electrically connected with described external terminal, it is characterized in that, described pedestal is a pcb board, and described loam cake and pedestal junction are provided with bonding agent.
In quartz-crystal resonator of the present invention, described pedestal is a tabular, and described loam cake has the storage tank of indent over against the one side of described pedestal.
In quartz-crystal resonator of the present invention, described pcb board is BT resin pcb board or epoxy resin pcb board.
In quartz-crystal resonator of the present invention, described loam cake is the loam cake of plastic cement or ceramic material.
In quartz-crystal resonator of the present invention, described loam cake is the PPS upper plastic cover.
In quartz-crystal resonator of the present invention, described bonding agent is an epoxy resin.
In quartz-crystal resonator of the present invention, described connection electrode comprises first electrode and second electrode, described external terminal comprises first external terminal and second external terminal, described quartz crystal have first surface and with this first surface opposing second surface, described first electrode is arranged on the first surface and with first external terminal and is electrically connected, and described second electrode is arranged on described second surface and is electrically connected with described second external terminal.
In quartz-crystal resonator of the present invention, also comprise first conductive lead wire and second conductive lead wire; Described first conductive lead wire, one end connects first electrode, and the other end connects first external terminal; Described second conductive lead wire, one end connects second electrode, and the other end connects external terminal.
In quartz-crystal resonator of the present invention, described first electrode is the metallic film that is formed at described first surface, and described first conductive lead wire is connected by conducting resinl with described first electrode; Described second electrode is the metallic film that is formed at described second surface, and described second conductive lead wire is connected by conducting resinl with described second electrode.
In quartz-crystal resonator of the present invention, described pedestal has at least two conductive pole of heavy copper of boring and filling perforation metallization formation, described first conductive lead wire and first external terminal are connected by a conductive pole wherein, and described second conductive lead wire is connected by another conductive pole with described second external terminal.
Implement quartz-crystal resonator of the present invention, have following beneficial effect: quartz-crystal resonator of the present invention adopts pcb board as pedestal, pottery or plastic material are as loam cake, the bonding connection between loam cake and the pedestal, existing relatively employing metallized ceramic pedestal is compared with the quartz-crystal resonator that metal top cover is welded, the cost of the quartz-crystal resonator that reduces has reduced difficulty of processing greatly, and good practical significance is arranged.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 a is that the master of the quartz-crystal resonator of prior art looks cutaway view;
Fig. 1 b is an x-x cutaway view among Fig. 1;
Fig. 1 c is the upward view of the quartz-crystal resonator among Fig. 1;
Fig. 2 a is that the master of first embodiment of quartz-crystal resonator of the present invention looks cutaway view;
Fig. 2 b be quartz-crystal resonator of the present invention first embodiment remove vertical view behind the loam cake;
Fig. 2 c be quartz-crystal resonator of the present invention second embodiment remove vertical view behind the loam cake;
Fig. 3 is the upward view of first embodiment of quartz-crystal resonator of the present invention;
Fig. 4 is the upward view of second embodiment of quartz-crystal resonator of the present invention.
Embodiment
As Fig. 2 a, Fig. 2 b and shown in Figure 3, in quartz-crystal resonator first embodiment of the present invention, quartz-crystal resonator 20 comprises pedestal 21, loam cake 22 and quartz crystal 23, wherein, pedestal 21 is flat pcb board, and this pcb board can be the pcb board of BT resin pcb board, epoxy resin pcb board or other materials; Loam cake 22 is the loam cake of plastic cement or ceramic material, PPS plastics for example, and loam cake 22 has the storage tank 112 of indent over against the one side of pedestal 21; Loam cake 22 covers on pedestal 21, the two junction is provided with bonding agent 24, this bonding agent is an epoxy resin, epoxide resin AB glue for example, loam cake 22 and pedestal 21 link together by bonding agent is bonding, form the crystal accommodation space of a sealing between the two, quartz crystal 23 is sealed in this accommodation space.
Quartz crystal 23 has connection electrode, this connection electrode comprises first electrode 31 and second electrode 32, first electrode 31 and second electrode 32 are the metallic film of formation respectively and quartz crystal first surface 34 and second surface 35, and first surface 34 is two relative on the quartz crystal 23 planes with second surface 35; Pedestal 21 has external terminal, this external terminal comprises first external terminal 36 and second external terminal 37, first electrode 31 is connected conducting with first external terminal 36 by first conductive lead wire 25, and second electrode 32 is connected conducting with second external terminal 37 by second conductive lead wire 27; First conductive lead wire 25 is connected by conducting resinl 26 with first electrode 31, and second conductive lead wire 27 is connected by conducting resinl 28 with second electrode 32.
First external terminal 36 on the pedestal 21 and second external terminal 37 are made for the material with satisfactory electrical conductivity, be positioned on the side 33 of pedestal 21 away from crystal, in order to make first external terminal, second external terminal 37 respectively with first conductive lead wire 25, the sealing of the not broken ring quartz crystal of the connection of second conductive lead wire 27, can adopt heavy copper of boring and filling perforation metallization process to form at least two conductive pole, one of them conductive pole is used to connect first conductive lead wire 25 and first external terminal 36, and another conductive pole is used to connect second conductive lead wire 27 and second external terminal 37.
As Fig. 2 c and shown in Figure 4, second embodiment for quartz-crystal resonator of the present invention, the structure of the present embodiment and first embodiment is roughly the same, difference is only different with the shape of quartz crystal 23, and the position of lead-in wire slightly changes, comprise pedestal 21 equally, loam cake and quartz crystal 23, first electrode 31 on the quartz crystal 23 is connected conducting by first external terminal 36 on the side 33 of first conductive lead wire 25 and pedestal 21, second electrode 32 is connected conducting by second conductive lead wire 27 with second external terminal 37, by conducting resinl 26 conductings, pass through conducting resinl 28 conductings between second conductive lead wire 27 and second electrode 32 between first conductive lead wire 25 and first electrode 31.
Conducting resinl 26,28 in first embodiment and second embodiment is an elargol, and it plays the effect of conducting conductive lead wire 25,27 and electrode 31,32 on the one hand, also plays on the other hand quartz crystal 23 is bonded in effect on the PCB substrate.When quartz-crystal resonator of the present invention assembles, earlier quartz crystal 23 is bonded on the pedestal 21 by conducting resinl 26,28, coating adhesive 24 on loam cake 22 or pedestal 21 then, epoxy resin sealant for example, loam cake 22 covers after on the pedestal 22, bonding agent 24 is solidified, make loam cake 22 and pedestal 21 firm bonding together.
Quartz-crystal resonator 20 of the present invention only needs to get final product at loam cake 22 and pedestal 21 joint bonding agents 24 during fabrication, and is all lower to equipment and operating personnel's requirement in the manufacturing process, reduces operating cost.Bonding agent 24 also can be filled the gap between loam cake 22 and the pedestal 21, the seal cavity that loam cake 22 and pedestal 21 are formed has good sealing property and mechanical performance, prevent that introduced contaminants from entering in the accommodation space of sealing quartz crystal, can effectively improve the reliability of quartz-crystal resonator.
In conjunction with the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (10)
1, a kind of quartz-crystal resonator, comprise pedestal, loam cake and quartz crystal, constitute a crystal accommodation space between described pedestal and the loam cake, described quartz crystal sealing is in described accommodation space, and described quartz crystal has connection electrode, and described pedestal has external terminal, described connection electrode is electrically connected with described external terminal, it is characterized in that described pedestal is a pcb board, described loam cake and pedestal junction are provided with bonding agent.
2, quartz-crystal resonator according to claim 1 is characterized in that, described pedestal is a tabular, and described loam cake has the storage tank of indent over against the one side of described pedestal.
3, quartz-crystal resonator according to claim 1 is characterized in that, described pcb board is BT resin pcb board or epoxy resin pcb board.
4, quartz-crystal resonator according to claim 1 is characterized in that, described loam cake is the loam cake of plastic cement or ceramic material.
5, quartz-crystal resonator according to claim 1 is characterized in that, described loam cake is the PPS upper plastic cover.
6, quartz-crystal resonator according to claim 1 is characterized in that, described bonding agent is an epoxy resin.
7, according to each described quartz-crystal resonator of claim 1 to 6, it is characterized in that, described connection electrode comprises first electrode and second electrode, described external terminal comprises first external terminal and second external terminal, described quartz crystal have first surface and with this first surface opposing second surface, described first electrode is arranged on the first surface and with first external terminal and is electrically connected, and described second electrode is arranged on described second surface and is electrically connected with described second external terminal.
8, quartz-crystal resonator according to claim 7 is characterized in that, also comprises first conductive lead wire and second conductive lead wire; Described first conductive lead wire, one end connects first electrode, and the other end connects first external terminal; Described second conductive lead wire, one end connects second electrode, and the other end connects external terminal.
9, quartz-crystal resonator according to claim 8 is characterized in that, described first electrode is the metallic film that is formed at described first surface, and described first conductive lead wire is connected by conducting resinl with described first electrode; Described second electrode is the metallic film that is formed at described second surface, and described second conductive lead wire is connected by conducting resinl with described second electrode.
10, quartz-crystal resonator according to claim 8, it is characterized in that, described pedestal has at least two conductive pole of heavy copper of boring and filling perforation metallization formation, described first conductive lead wire and first external terminal are connected by a conductive pole wherein, and described second conductive lead wire is connected by another conductive pole with described second external terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910190132A CN101662270A (en) | 2009-09-09 | 2009-09-09 | Quartz-crystal resonator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910190132A CN101662270A (en) | 2009-09-09 | 2009-09-09 | Quartz-crystal resonator |
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| CN101662270A true CN101662270A (en) | 2010-03-03 |
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| CN200910190132A Pending CN101662270A (en) | 2009-09-09 | 2009-09-09 | Quartz-crystal resonator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332890A (en) * | 2011-08-29 | 2012-01-25 | 应达利电子(深圳)有限公司 | Surface mounted quartz crystal oscillator of PCB (Printed Circuit Board) base and manufacture method thereof |
| CN102694522A (en) * | 2011-03-23 | 2012-09-26 | 日本电波工业株式会社 | Quartz-crystal devices |
| CN108900174A (en) * | 2018-08-23 | 2018-11-27 | 应达利电子股份有限公司 | A kind of quartz oscillator and the method for manufacturing the quartz oscillator |
| WO2020037858A1 (en) * | 2018-08-23 | 2020-02-27 | 应达利电子股份有限公司 | Quartz crystal oscillator and method for manufacturing the quartz crystal oscillator |
-
2009
- 2009-09-09 CN CN200910190132A patent/CN101662270A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694522A (en) * | 2011-03-23 | 2012-09-26 | 日本电波工业株式会社 | Quartz-crystal devices |
| CN102694522B (en) * | 2011-03-23 | 2014-11-19 | 日本电波工业株式会社 | Quartz-crystal devices |
| CN102332890A (en) * | 2011-08-29 | 2012-01-25 | 应达利电子(深圳)有限公司 | Surface mounted quartz crystal oscillator of PCB (Printed Circuit Board) base and manufacture method thereof |
| CN102332890B (en) * | 2011-08-29 | 2017-12-29 | 应达利电子股份有限公司 | A kind of quartz crystal oscillator pasted on surface and its manufacture method of PCB pedestals |
| CN108900174A (en) * | 2018-08-23 | 2018-11-27 | 应达利电子股份有限公司 | A kind of quartz oscillator and the method for manufacturing the quartz oscillator |
| WO2020037858A1 (en) * | 2018-08-23 | 2020-02-27 | 应达利电子股份有限公司 | Quartz crystal oscillator and method for manufacturing the quartz crystal oscillator |
| CN108900174B (en) * | 2018-08-23 | 2024-04-30 | 深圳市深汕特别合作区应达利电子科技有限公司 | Quartz crystal oscillator and method for manufacturing same |
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Application publication date: 20100303 |