CN2459760Y - Ceramic casing chip type piezoelectric element - Google Patents
Ceramic casing chip type piezoelectric element Download PDFInfo
- Publication number
- CN2459760Y CN2459760Y CN00259228.2U CN00259228U CN2459760Y CN 2459760 Y CN2459760 Y CN 2459760Y CN 00259228 U CN00259228 U CN 00259228U CN 2459760 Y CN2459760 Y CN 2459760Y
- Authority
- CN
- China
- Prior art keywords
- piezoelectric vibrator
- electrode
- shell
- piezoelectric element
- external electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000919 ceramic Substances 0.000 title claims abstract description 27
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000003822 epoxy resin Substances 0.000 claims abstract description 9
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- 238000000605 extraction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
The utility model relates to a ceramic casing chip type piezoelectric element used for the surface installation, comprising an outer casing 1 and a piezoelectric vibrator 3. A cavity 2 is arranged on the outer casing. The piezoelectric vibrator 3 is positioned in the cavity 2. Outer electrodes 9 are arranged on the bottom surface 8 of the outer casing and the side surface 10 of the casing. An embedding epoxy resin layer 4 is arranged above the piezoelectric vibrator 3. A thin film 5 is divided between the epoxy resin layer 4 and the piezoelectric vibrator 3. The middle part of the outer electrode 9 on the bottom surface 8 of the outer casing 1 is provided with a conducting hole 7 communicated with the bottom surface. Conducting filler is filled in the hole. The electrode of the piezoelectric vibrator 3 and the outer electrode 9 on the outer casing are connected by the conducting filler. The utility model has the advantage of good air tightness. The electrodes are easy to lead out.
Description
The utility model relates to the structure of the ceramic package plate piezoelectric element that a kind of mounted on surface uses.
Existing mounted on surface has two kinds of patterns with the plate piezoelectric element.A kind of is to assemble piezoelectric vibrator on the ceramic bottom board of band external electrode, covers a ceramic cap then, seals with resin-bonding again.Another kind is that two cover plates that a plurality of cavitys are arranged are bonded on the above and below of piezoelectric vibrator of a plurality of vibrating electrode figures, cuts into discrete component then, again in side metalization.The plate piezoelectric element of these two kinds of structures, air-tightness is wayward, and side metal intensity is poor slightly, and electrode is drawn difficult.
The purpose of this utility model is that a kind of air-tightness of proposition is better, and electrode is drawn the structure of easier ceramic package plate piezoelectric element.
This ceramic package plate piezoelectric element comprises shell and piezoelectric vibrator, has cavity, piezoelectric vibrator to be in the cavity on the shell on the shell, and the electrode of piezoelectric vibrator is bonded in the shell with conductive adhesive, on the bottom surface of shell and the side external electrode is arranged.There is an encapsulated epoxy resin layer piezoelectric vibrator top, separate by film between above-mentioned epoxy resin layer and the piezoelectric vibrator, there is the conductive hole that connects the bottom surface at the middle part of the external electrode on the bottom surface of described shell, be filled with conducting filler in the hole, this conducting filler is electrically connected the electrode of piezoelectric vibrator and the external electrode on the shell.
This ceramic package plate piezoelectric element, because the cavity on the shell adopts epoxy sealing, and the electrode of piezoelectric vibrator is electrically connected by conducting filler in the conductive hole of shell bottom surface and external electrode, conducting filler plays the effect of sealing again, thereby air-tightness is better, and electrode is drawn also and is easier to.
Accompanying drawing 1 is the structure principle chart of this ceramic package plate piezoelectric element;
Accompanying drawing 2 is the structure chart of the shell among Fig. 1;
Accompanying drawing 3 is the structure chart of another kind of ceramic package plate piezoelectric element;
Accompanying drawing 4 is the structure chart of the shell among Fig. 3;
Accompanying drawing 6 is structure charts of another ceramic package plate piezoelectric element.
As depicted in figs. 1 and 2, this ceramic package plate piezoelectric element comprises shell 1 and piezoelectric vibrator 3.Cavity 2 is arranged on the shell.Piezoelectric vibrator 3 is in the cavity 2 on the shell, and the electrode of piezoelectric vibrator is pasted in the enclosure with conductive adhesive 6.On the bottom surface 8 of shell and the side 10 external electrode 9 is arranged.There is an encapsulated epoxy resin layer 4 top of piezoelectric vibrator 3, is separated by film 5 between above-mentioned epoxy resin layer 4 and the piezoelectric vibrator 3.Film 5 can adopt ceramic sheet or fish paper.There is the conductive hole 7 that connects the bottom surface at the middle part of the external electrode 9 on the bottom surface 8 of described shell 1, is filled with conducting filler in the conductive hole, and this conducting filler is electrically connected the electrode and the external electrode on the shell 9 of piezoelectric vibrator 3.
As shown in Figure 2, for the above and below that makes piezoelectric vibrator 3 maintains certain space, can respectively there be a raised line 13 at the two ends, bottom of the cavity 2 of shell 1, put piezoelectric vibrator in order to put; The upper edge of cavity 2 can have the groove 14 of a step, in order to place film 5 and encapsulated epoxy resin 4.
The external electrode 9 of the structure shown in Fig. 1 and 2 has two, divides the two ends that are in bottom surface 8 and side 10.There is a conductive hole 7 at the middle part of each electrode.This structure is applicable to the piezoelectric ceramics resonator of quartz resonator and scissoring vibration pattern, thickness first-harmonic or triple-frequency harmonics vibration mode.
As shown in Figure 3 and Figure 4, can also there be one the 3rd external electrode 11 at the middle part of the bottom surface 8 of this ceramic package plate piezoelectric element and side 10.This kind structure, the porcelain of ceramic package can be selected specially has certain dielectric constant and temperature coefficient, and this 3rd external electrode and two other external electrode can be formed interior bringing onto load electric capacity, and makes resonance frequency obtain temperature-compensating.The electric principle of this ceramic package plate piezoelectric element as shown in Figure 5.Be ceramic package plate piezoelectric element among the figure in the frame of broken lines.
As shown in Figure 6, also can there be the conductive hole 12 of a perforation bottom surface at the middle part of the 3rd external electrode on the bottom surface of this ceramic package plate piezoelectric element, is filled with conducting filler in the conductive hole.This structure is applicable to the elements such as piezoelectric filter, frequency discriminator and trapper that three extraction poles are arranged on the piezoelectric vibrator.The 3rd external electrode of this moment only uses as extraction electrode, electric the linking of electrode at conducting filler in the dependence conductive hole 12 and piezoelectric vibrator middle part.
Claims (5)
1, a kind of ceramic package plate piezoelectric element, comprise shell (1) and piezoelectric vibrator (3), cavity (2) is arranged on the shell, piezoelectric vibrator (3) is in the cavity (2) on the shell, the electrode of piezoelectric vibrator is bonded in the shell with conductive adhesive (6), on the bottom surface of shell (8) and side (10) external electrode (9) is arranged, it is characterized in that there is an encapsulated epoxy resin layer (4) described piezoelectric vibrator (3) top, separate by film (5) between above-mentioned epoxy resin layer (4) and the piezoelectric vibrator (3), there is the conductive hole (7) that connects the bottom surface at the middle part of the external electrode (9) on the bottom surface (8) of described shell (1), be filled with conducting filler in the hole, this conducting filler is electrically connected the electrode and the external electrode on the shell (9) of piezoelectric vibrator (3).
2, ceramic package plate piezoelectric element as claimed in claim 1 is characterized in that the external electrode (9) on the described shell is the silver electrode that seal burns, and has electroplated nickel dam and tin layer.
3, ceramic package plate piezoelectric element as claimed in claim 1 or 2 is characterized in that described external electrode (9) has two, divides the two ends that are in bottom surface (8), and there is a conductive hole (7) at the middle part of each electrode, is filled with conducting filler in the hole.
4, ceramic package plate piezoelectric element as claimed in claim 3 is characterized in that the middle part of described bottom surface (8) and side (10) also has one the 3rd external electrode (11).
5, ceramic package plate piezoelectric element as claimed in claim 4, the middle part that it is characterized in that the 3rd external electrode (11) on the described bottom surface have a conductive hole (12) that connects the bottom surface, are filled with conducting filler in the conductive hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00259228.2U CN2459760Y (en) | 2000-11-16 | 2000-11-16 | Ceramic casing chip type piezoelectric element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00259228.2U CN2459760Y (en) | 2000-11-16 | 2000-11-16 | Ceramic casing chip type piezoelectric element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2459760Y true CN2459760Y (en) | 2001-11-14 |
Family
ID=33615290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00259228.2U Expired - Lifetime CN2459760Y (en) | 2000-11-16 | 2000-11-16 | Ceramic casing chip type piezoelectric element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2459760Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435483C (en) * | 2006-04-17 | 2008-11-19 | 南京华联兴电子有限公司 | Design method of quartz crystal coated electrode |
| CN103730568A (en) * | 2012-10-24 | 2014-04-16 | 肇庆捷成电子科技有限公司 | Packaging part provided with electronic component installed on the surface, piezoelectric buzzer piece and packaging method |
| CN105789430A (en) * | 2016-02-02 | 2016-07-20 | 欧明 | Piezoelectric ceramic oscillator with stable temperature |
| CN105826461A (en) * | 2016-03-08 | 2016-08-03 | 欧明 | Temperature stabilized piezoelectric composite ceramic vibrator |
-
2000
- 2000-11-16 CN CN00259228.2U patent/CN2459760Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435483C (en) * | 2006-04-17 | 2008-11-19 | 南京华联兴电子有限公司 | Design method of quartz crystal coated electrode |
| CN103730568A (en) * | 2012-10-24 | 2014-04-16 | 肇庆捷成电子科技有限公司 | Packaging part provided with electronic component installed on the surface, piezoelectric buzzer piece and packaging method |
| CN103730568B (en) * | 2012-10-24 | 2016-05-18 | 肇庆捷成电子科技有限公司 | Encapsulation, piezoelectricity singing piece and the method for packing of surface mounted electronic elements |
| CN105789430A (en) * | 2016-02-02 | 2016-07-20 | 欧明 | Piezoelectric ceramic oscillator with stable temperature |
| CN105789430B (en) * | 2016-02-02 | 2018-04-24 | 欧明 | A kind of temperature stabilization piezoelectric ceramic vibrator |
| CN105826461A (en) * | 2016-03-08 | 2016-08-03 | 欧明 | Temperature stabilized piezoelectric composite ceramic vibrator |
| CN105826461B (en) * | 2016-03-08 | 2018-08-07 | 欧明 | A kind of temperature stabilization piezoelectric composite ceramics oscillator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20101116 Granted publication date: 20011114 |