CN101984556B - Piezoelectric ceramic vibrator and manufacturing method thereof - Google Patents
Piezoelectric ceramic vibrator and manufacturing method thereof Download PDFInfo
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- CN101984556B CN101984556B CN 201010544013 CN201010544013A CN101984556B CN 101984556 B CN101984556 B CN 101984556B CN 201010544013 CN201010544013 CN 201010544013 CN 201010544013 A CN201010544013 A CN 201010544013A CN 101984556 B CN101984556 B CN 101984556B
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Abstract
The invention provides a piezoelectric ceramic vibrator and a manufacturing method thereof. In the invention, by means of limitation on a diode in a control circuit, an electrical signal in a positive period and an electrical signal in a negative period are applied to two ceramic piezoelectric patches respectively so as to control the two ceramic piezoelectric patches of the piezoelectric ceramic vibrator to work by turns. In the piezoelectric ceramic vibrator, only one ceramic piezoelectric patch can work within a certain time and an external electric field always keeps the same direction with the polarization direction, which does not cause depoissonization of the ceramic patches to affect performances, thus improving the reliability of the ceramic piezoelectric patches and prolonging the service life of the ceramic piezoelectric patches.
Description
[technical field]
The present invention relates to a kind of piezoelectric ceramic, specifically, relate to a kind of piezo-ceramic vibrators and preparation method thereof.
[background technology]
Potsherd has inverse piezoelectric effect, namely under the effect of extra electric field, mechanical deformation occurs, and utilizes this characteristic, and potsherd can be used for making piezoceramic transducer, such as piezoelectric ceramic loudspeaker, and piezoelectric ceramic type vibrator etc.Wherein the range of application of piezoelectric vibrator is very extensive, indispensable such as piezoelectric vibrator for the industrial products of making electron beam tube, oscillator, portable unit and electronic unit, piezoelectric vibrator is used for timing source, timing source or is used for the reference source of signal, and piezoelectric vibrator also is widely used on the mobile phone.
As shown in Figure 1, disclosed a kind of piezo-ceramic vibrators 1 ' that has now, comprise a substrate 10 ', attach the piezoelectric patches 11 ' on substrate 10 ' surface, when attaching conducting strip 12 ' the described piezoelectricity double-surface ceramics vibrator 1 ' work on piezoelectric patches 11 ' surface, it is opposite that piezoelectric patches 11 ' always has its added direction of an electric field of a slice (direction shown in dotted arrow in Fig. 1 piezoelectric patches 11 ') and polarised direction (direction shown in solid arrow in Fig. 1 piezoelectric patches 11 '), thereby cause the depolarization of piezoelectric patches 11 ' and affect performance, reduce reliability.
Therefore be necessary over against above-mentioned piezoelectric ceramics sheet because wherein the direction of an electric field same polarization opposite direction of a slice piezoelectric ceramics sheet and the piezoelectric ceramics sheet depolarization that causes and the deficiency of impact property reduction reliability improves.
[summary of the invention]
The present invention is for solving existing piezoelectric ceramics sheet when two piezoelectric ceramics sheets are worked simultaneously, wherein always there is a slice extra electric field opposite with its polarised direction, can cause the potsherd depolarization and affect performance, reduce the problem of reliability, and a kind of piezo-ceramic vibrators and preparation method thereof is provided:
A kind of piezo-ceramic vibrators, comprise the piezoelectric patches of a substrate, attaching substrate surface, conducting strip and a control circuit on attaching piezoelectric patches surface, described control circuit comprises AC amplifier and the some diodes that is electrically connected with signal source, at least the diode of connecting respectively between described AC amplifier and the piezoelectric patches and between AC amplifier and the substrate forms the first circuit loop, and the diode of connecting at least respectively between described AC amplifier and another piezoelectric patches and between AC amplifier and the substrate forms the second circuit loop.
A kind of improvement as piezo-ceramic vibrators of the present invention, the positive pole of the cathode connecting diode of described AC amplifier, the negative pole of described diode connects the conducting strip on the piezoelectric patches, described substrate connects the positive pole of another diode, the negative pole of this diode connects the negative pole of AC amplifier, thereby forms the first circuit loop;
A kind of improvement as piezo-ceramic vibrators of the present invention, the negative pole of described AC amplifier connects the positive pole of diode, the negative pole of described diode connects the conducting strip on another piezoelectric patches, described substrate connects the positive pole of another diode, the negative pole of this diode connects the positive pole of AC amplifier, thereby forms the second circuit loop;
As a kind of improvement of piezo-ceramic vibrators of the present invention, described substrate is metal substrate.
The present invention also provides the manufacture method of this piezo-ceramic vibrators, and the method comprises the steps: to provide a substrate, attaches the piezoelectric patches of substrate surface and the conducting strip on attaching piezoelectric patches surface; One control circuit is provided, and described control circuit comprises AC amplifier and some diodes; Positive pole with the cathode connecting diode of described AC amplifier, the negative pole of described diode connects the conducting strip on the piezoelectric patches, described substrate connects the positive pole of another diode, and the negative pole of described another diode connects the negative pole of AC amplifier, thereby forms the first circuit loop; The positive pole that the negative pole of described AC amplifier is connected diode, the negative pole of described diode connects the conducting strip on another piezoelectric patches, described substrate connects the positive pole of another diode, and the negative pole of described another diode connects the positive pole of AC amplifier, thereby forms the second circuit loop; The access signal of telecommunication after signal positive period of the described signal of telecommunication is processed through control circuit, produces the electric field identical with the piezoelectric patches polarised direction by the first circuit loop at piezoelectric patches, thereby this piezoelectric patches is bent upwards; When the negative cycle signal of the described signal of telecommunication is processed through control circuit, produce the electric field identical with this piezoelectric patches polarised direction by the second circuit loop at another piezoelectric patches, thereby this piezoelectric patches is bent downwardly.
Piezo-ceramic vibrators provided by the invention, can make piezo-ceramic vibrators only have sometime wherein a slice piezoelectric patches in work, and extra electric field is identical all the time with its polarised direction, can cause the potsherd depolarization and affect performance, improve reliability, life-saving.
[description of drawings]
Fig. 1 is the structural representation of existing correlation technique piezo-ceramic vibrators;
Fig. 2 is piezo-ceramic vibrators structural representation of the present invention;
Fig. 3 is piezo-ceramic vibrators operation principle schematic diagram of the present invention.
[embodiment]
The invention will be further described below in conjunction with drawings and embodiments.
The piezoelectric patches of piezo-ceramic vibrators provided by the invention has inverse piezoelectric effect, i.e. generator tool distortion under DC Electric Field.Piezoelectric patches is made by the piezoelectric with piezoelectric effect characteristic, and piezoelectric generally comprises piezoelectric crystal, piezoelectric ceramic, organic polymer piezoelectric, and piezoelectric patches is made by highly sensitive piezoceramic material in the preferred implementation provided by the invention.
As shown in Figure 2, piezo-ceramic vibrators 1 provided by the invention, comprise a substrate 10, attach the piezoelectric patches 11 on substrate 10 surfaces, attach conducting strip 12 and a control circuit 14 on piezoelectric patches 11 surfaces, described control circuit 14 comprises AC amplifier 145 and the some diodes that is electrically connected with signal source DC, described some diodes refer to comprise at least diode 141, diode 142, a plurality of diodes such as diode 143 and diode 144, at least the diode 143 of connecting at least between a diode 141 and substrate 10 and the AC amplifier 14 of connecting between described AC amplifier 14 and the piezoelectric patches 11 forms the first circuit loop, a diode 144 formation second circuit loops of connecting at least between connect at least between described AC amplifier 14 and another piezoelectric patches 11 diode 142 and substrate 10 and the AC amplifier 14.
Its circuit connects the positive pole that is achieved in that the V+ utmost point connection diode 141 of AC amplifier 14, on the conducting strip 12 of the upper surface of the piezoelectric patches 11 of anodal connection substrate 10 upper surfaces of diode 141, then substrate 10 is connected with the positive pole of diode 143, the negative pole of diode 143 connects the V-utmost point of AC amplifier, thereby has formed the first circuit loop; The positive pole that the V-utmost point of AC amplifier 14 is connected diode 144, on the conducting strip 12 of the lower surface of the piezoelectric patches 11 of anodal connection substrate 10 lower surfaces of diode 144, then substrate 10 is connected with the positive pole of diode 142, the negative pole of diode 142 connects the V+ utmost point of AC amplifier, thereby has formed the second circuit loop.
Described substrate 10 is metal substrate, can certainly be other non-conductive substrates, if non-conductive substrate, then need to receive respectively on the conducting strip 12 between piezoelectric patches 11 and the substrate 10 originally being connected on wire on the substrate 10, thereby form electric field at piezoelectric patches 11, but in embodiments of the invention, substrate 10 is metallic plate, so only need allow wire connection substrate 10 get final product, and the conducting strip 12 between substrate 10 and the piezoelectric patches 11 is not essential.
Described bracing frame 13 is near substrate 10 edge settings on one side, thus a side of fixing base 10.
As shown in Figures 2 and 3, switch b among the actual just suitable figure of some diodes in the described control circuit 14 (indicating) and the function of switch c control circuit folding, DC is signal source, when the signals such as signal source DC is sinusoidal to control circuit 14 input, cosine or square wave, through the AC amplifier 145 in the control circuit 14 and the effect of some diodes, the signal of telecommunication of positive period is from the V+ end output of AC amplifier 14, and the closed Simultaneous Switching c of switch b this moment disconnects; The V-end output of the signal of telecommunication of negative cycle from AC amplifier 14, the closed Simultaneous Switching b of switch c this moment disconnects, thereby in piezoelectric patches 11, form in turn electric field, and direction of an electric field (direction shown in dotted arrow in Fig. 3 piezoelectric patches 11) is identical with polarised direction (direction shown in solid arrow in Fig. 3 piezoelectric patches 11) direction, piezoelectric patches 11 is only having wherein a slice sometime in work like this, and extra electric field is identical all the time with its polarised direction, can not cause the piezoelectric ceramics sheet to affect performance because of depolarization, improve like this reliability, prolonged the useful life of piezoelectric ceramics sheet.
The present invention also provides the manufacture method of described piezo-ceramic vibrators 1, and the method comprises the steps:
(1) provides a substrate 10, attach the piezoelectric patches 11 on substrate 10 surfaces and the conducting strip 12 on attaching piezoelectric patches 11 surfaces;
(2) provide a control circuit 14, described control circuit 14 comprises AC amplifier 145 and some diodes;
(3) the anodal V+ of described AC amplifier 145 is connected the positive pole of diode 141, the negative pole of described diode 141 connects the conducting strip 12 on the piezoelectric patches 11, described substrate 10 connects the positive pole of another diode 143, the negative pole of described diode 143 connects the negative pole V-of AC amplifier 145, thereby forms the first circuit loop; The positive pole that the negative pole V-of described AC amplifier is connected diode 144, the negative pole of described diode 144 connects the conducting strip 12 on another piezoelectric patches 11, described substrate 10 connects the positive pole of another diode 142, the negative pole of described diode 142 connects the anodal V+ of AC amplifier 145, thereby forms the second circuit loop;
(4) the access signal of telecommunication, signal positive period of the described signal of telecommunication is processed through control circuit 14, produce the electric field (as in Fig. 3 piezoelectric patches 11 dotted arrow shown in direction be direction of an electric field) identical with piezoelectric patches 11 polarised directions (direction shown in solid arrow in Fig. 3 piezoelectric patches 11) by the first circuit loop at piezoelectric patches 11, thereby this piezoelectric patches 11 is bent upwards; The negative cycle signal of the described signal of telecommunication is processed through control circuit 14, produce the electric field (as in Fig. 3 piezoelectric patches 11 dotted arrow shown in direction direction of an electric field) identical with these piezoelectric patches 11 polarised directions (direction shown in solid arrow in Fig. 3 piezoelectric patches 11) by the second circuit loop at another piezoelectric patches 11, thereby this piezoelectric patches 11 is bent downwardly.
Above-described only is preferred embodiments of the present invention, should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the invention design, can also make improvement, but these all belongs to protection scope of the present invention.
Claims (5)
1. piezo-ceramic vibrators, comprise the piezoelectric patches of a substrate, attaching substrate surface, conducting strip and a control circuit on attaching piezoelectric patches surface, it is characterized in that: described control circuit comprises AC amplifier and the some diodes that is electrically connected with signal source, at least the diode of connecting respectively between described AC amplifier and the piezoelectric patches and between AC amplifier and the substrate forms the first circuit loop, and the diode of connecting at least respectively between described AC amplifier and another piezoelectric patches and between AC amplifier and the substrate forms the second circuit loop.
2. piezo-ceramic vibrators as claimed in claim 1, it is characterized in that: the positive pole of the cathode connecting diode of described AC amplifier, the negative pole of described diode connects the conducting strip on the piezoelectric patches, described substrate connects the positive pole of another diode, the negative pole of this diode connects the negative pole of AC amplifier, thereby forms the first circuit loop.
3. piezo-ceramic vibrators as claimed in claim 1 or 2, it is characterized in that: the negative pole of described AC amplifier connects the positive pole of diode, the negative pole of described diode connects the conducting strip on another piezoelectric patches, described substrate connects the positive pole of another diode, the negative pole of this diode connects the positive pole of AC amplifier, thereby forms the second circuit loop.
4. piezo-ceramic vibrators as claimed in claim 1 or 2, it is characterized in that: described substrate is metal substrate.
5. the manufacture method of a piezo-ceramic vibrators as claimed in claim 1, the method comprises the steps:
(1) provides a substrate, attach the piezoelectric patches of substrate surface and the conducting strip on attaching piezoelectric patches surface;
(2) provide a control circuit, described control circuit comprises AC amplifier and some diodes;
(3) with the positive pole of the cathode connecting diode of described AC amplifier, the negative pole of described diode connects the conducting strip on the piezoelectric patches, described substrate connects the positive pole of another diode, and the negative pole of described another diode connects the negative pole of AC amplifier, thereby forms the first circuit loop; The positive pole that the negative pole of described AC amplifier is connected diode, the negative pole of described diode connects the conducting strip on another piezoelectric patches, described substrate connects the positive pole of another diode, and the negative pole of described another diode connects the positive pole of AC amplifier, thereby forms the second circuit loop;
(4) the access signal of telecommunication after signal positive period of the described signal of telecommunication is processed through control circuit, produces the electric field identical with the piezoelectric patches polarised direction by the first circuit loop at piezoelectric patches, thereby this piezoelectric patches is bent upwards; When the negative cycle signal of the described signal of telecommunication is processed through control circuit, produce the electric field identical with this piezoelectric patches polarised direction by the second circuit loop at another piezoelectric patches, thereby this piezoelectric patches is bent downwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010544013 CN101984556B (en) | 2010-11-15 | 2010-11-15 | Piezoelectric ceramic vibrator and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010544013 CN101984556B (en) | 2010-11-15 | 2010-11-15 | Piezoelectric ceramic vibrator and manufacturing method thereof |
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| CN101984556A CN101984556A (en) | 2011-03-09 |
| CN101984556B true CN101984556B (en) | 2013-03-20 |
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| CN 201010544013 Expired - Fee Related CN101984556B (en) | 2010-11-15 | 2010-11-15 | Piezoelectric ceramic vibrator and manufacturing method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103321891A (en) * | 2013-06-19 | 2013-09-25 | 重庆中镭科技有限公司 | Vibrator of piezoelectric pump and control method |
| CN112536208B (en) * | 2020-11-13 | 2021-12-31 | 同济大学 | Multi-channel phase difference controlled elastic wave spin source excitation device and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397105A (en) * | 2000-01-31 | 2003-02-12 | 金石株式会社 | Vessel for oscillation circuits using piczoelectric vibrator, method of producing the same and oscillator |
| CN1828960A (en) * | 2005-02-28 | 2006-09-06 | 精工爱普生株式会社 | Piezoelectric vibrating element and piezoelectric vibrator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004304766A (en) * | 2003-03-17 | 2004-10-28 | Seiko Epson Corp | Oscillation circuit, adjustment method therefor, and mass measurement apparatus using the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1397105A (en) * | 2000-01-31 | 2003-02-12 | 金石株式会社 | Vessel for oscillation circuits using piczoelectric vibrator, method of producing the same and oscillator |
| CN1828960A (en) * | 2005-02-28 | 2006-09-06 | 精工爱普生株式会社 | Piezoelectric vibrating element and piezoelectric vibrator |
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Effective date of registration: 20170727 Address after: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8 Co-patentee after: AAC MICROTECH (CHANGZHOU) Co.,Ltd. Patentee after: AAC TECHNOLOGIES Pte. Ltd. Address before: 518057 Nanshan District province high tech Industrial Park, Shenzhen, North West New Road, No. 18 Co-patentee before: AAC MICROTECH (CHANGZHOU) Co.,Ltd. Patentee before: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) Co.,Ltd. |
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Effective date of registration: 20181018 Address after: No. 8, 2 floor, 85 Cavendish Science Park Avenue, Singapore Patentee after: AAC TECHNOLOGIES Pte. Ltd. Address before: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8 Co-patentee before: AAC MICROTECH (CHANGZHOU) Co.,Ltd. Patentee before: AAC TECHNOLOGIES Pte. Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20211115 |