CN100431186C - Compound body of piezoelectric ceramics, and energizer, speaker or buzzer produced from piezoelectric ceramics - Google Patents

Compound body of piezoelectric ceramics, and energizer, speaker or buzzer produced from piezoelectric ceramics Download PDF

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Publication number
CN100431186C
CN100431186C CNB2005100908760A CN200510090876A CN100431186C CN 100431186 C CN100431186 C CN 100431186C CN B2005100908760 A CNB2005100908760 A CN B2005100908760A CN 200510090876 A CN200510090876 A CN 200510090876A CN 100431186 C CN100431186 C CN 100431186C
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anodal
hole
negative pole
silver
ceramic wafer
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CNB2005100908760A
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Chinese (zh)
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CN1917247A (en
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吕垚村
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音赐股份有限公司
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Abstract

The composite body of piezoelectric ceramic is prepared by sintering a top layer, a bottom layer and at least one middle layer of ceramic plate stacked each other. Silver and palladium are coated on each junction surface of each ceramic plate. Silver cream is coated on outer end faces of ceramic plate at bottom layer so as to produce composite body of piezoelectric ceramic of containing conductive loop. Being stuck on end face of a metal plate, the composite body connected to module of seat body with ends of supplying positive and negative signals constitutes a piezoelectric exciter, piezoelectric loudspeaker, or piezoelectric buzzer.

Description

Piezoelectric ceramic complex and the piazo-exciter of making, piezoelectric loudspeaker and piezoelectric buzzer

Technical field:

The present invention relates to a kind ofly be composited and have the piezoelectric ceramic complex of positive and negative electrode galvanic circle by most layer ceramic wafer; The present invention also comprises the technology of using this complex to make a piazo-exciter, piezoelectric loudspeaker or piezoelectric buzzer.

Prior art:

The being seen piazo-exciter of tradition, piezoelectric loudspeaker and piezoelectric buzzer all are to utilize a piezoelectric type to excite sheet that the signal of positive and negative electrode is excited (Stimulate) and discharges sound.

And know, traditional sheet that excites is to attach single-layer ceramic plate (Ceramic sheet of singlelayer) to make on a metallic plate end face, and be coated with electric conducting material respectively as electrode layer on the bilateral end face that each ceramic wafer exposes, the anodal Communication signal wire that connects the signal feed end in order to weldering, and utilize the metallic plate weldering to connect the negative pole Communication signal wire of signal feed end, relying to produce excites common shake effect, and becomes piazo-exciter, piezoelectric loudspeaker and the piezoelectric buzzer that can discharge sound.

Just, the ceramic wafer that is attached because of above-mentioned metallic plate Double End is only had an individual layer, therefore need higher driving voltage could produce preferable output audio, when too faint, will be difficult to inspire preferable common tremolo between single-layer ceramic plate and the metallic plate and imitate as if signal feed end input signal voltage.

Summary of the invention:

Primary and foremost purpose of the present invention be to provide a kind of can be with the piezoelectric ceramic complex that drives than low driving voltage.

For achieving the above object, complex of the present invention is stacked mutually by the ceramic wafer in a top layer, a bottom and a middle level, all presses with high temperature sintering through hot water to form; Wherein:

Difference coating silver palladium between the composition surface of each ceramic wafer, with the conductive layer as positive and negative electrode, this silver palladium is made with the alloy of palladium (Pd) by a certain proportion of silver (Ag); Wherein Yin conductivity is good, but molten point only is 961 ℃, thus must be good with conductivity, and molten point is that 1554 ℃ palladium is together made alloy; Therefore, when 1150 ℃ of each ceramic wafers of high temperature sintering,, impel to be sintered into ceramic composite between each layer ceramic wafer smoothly because of silver palladium alloy possesses resistant to elevated temperatures characteristic; And

Offer the positive and negative electrode through hole that is connected between each layer ceramic wafer respectively, the outer face of this top, bottom ceramic wafer is coated with silver paste, landfill is in affiliated plus or minus utmost point through hole separately, and silver-colored palladium of each layer and silver paste are provided with insulated hole, around the plus or minus utmost point through hole periphery of affiliated layer position, go out positive and negative electrode loop in the complex with construction; In view of the above, can be for linking the positive and negative electrode signal voltage, and by most layer insulation in the complex with galvanic circle, the interval effect between ceramic wafer and most layer silver paste, silver palladium layer, to reach the purpose of reduction driving voltage.

Another object of the present invention is to take above-mentioned complex makes can be to drive than low driving voltage and to be beneficial to module production and can to avoid lead to expose and cause a kind of piazo-exciter of impeding.For realizing this purpose, the present invention is attached at the bottom silver paste of at least one complex on the end face of one metallic plate, excites sheet to make a piezoelectric type; Simultaneously, and with one in be loaded with the positive and negative electrode conductive component the insulating base frame module become this piazo-exciter.

The present invention's a purpose again be to take above-mentioned excite sheet to make can be to drive than low driving voltage and to be beneficial to module production and can to avoid lead to expose and cause a kind of piezoelectric loudspeaker of impeding.For reaching this purpose, the present invention will excite sheet to be loaded with on the insulating base frame of drive circuit chip in sticking in by a damping pad, to make this piezoelectric loudspeaker.

The present invention's another purpose be intended to take above-mentioned excite sheet to make can be to drive and to be beneficial to a kind of piezoelectric buzzer that module is produced than low driving voltage.For reaching this purpose, the present invention is provided with at least one sheet embedding group that excites in the housing of caulking groove in one, and is with silica gel that embedding group place is mutually cemented again, to make this piezoelectric buzzer; Also can be provided with in the housing of ring rib exciting sheet to be mounted on one, with silica gel that combination place is mutually cemented again.

Description of drawings:

Fig. 1: the three-dimensional exploded view of first item embodiment of the present invention illustrates the composition of this piezoelectric ceramic complex finished product.

Fig. 2: the half-finished cut-away view of piezoelectric ceramic complex of the present invention illustrates between the composition surface of each ceramic wafer to be coated with silver-colored palladium respectively, and offers the positive and negative electrode through hole that is connected between each ceramic wafer.

Fig. 3: the cut-away view of piezoelectric ceramic complex of the present invention, the anodal through hole of this top layer silver paste landfill is described and the anodal loop of argentiferous in forming, and this bottom silver paste landfill negative pole through hole and the negative loop of argentiferous in forming.

Fig. 4: the cut-away view that excites sheet of figure one of the present invention illustrates to excite sheet to be composited by two piezoelectric ceramic complexs and a metallic plate.

Fig. 5: the stereogram of second section of embodiment of the present invention illustrates that in an insulating base frame anodal conductive component of encapsulation, negative pole conductive component and at least one excite sheet to form a piazo-exciter.

Fig. 6: one of Fig. 5 cut-away view illustrates that having three on the anodal conductive component presses contravention and three external connection end that expose.

Another cut-away view of Fig. 7: Fig. 5 illustrates to have a Jia Kou and three external connection end that expose on the negative pole conductive component.

Fig. 8: one of second section of embodiment of the present invention assembly cut-away view illustrates in the slot that utilizes external connection end to insert substrate with the supply signal voltage.

Fig. 9: another assembly cut-away view of second section of embodiment of the present invention illustrates the form of piazo-exciter and driving circuit chip phase module.

Fig. 9 a: Fig. 9 of the present invention goes up (bowing) view, and the input port that drive circuit chip is described has a source of sound positive terminal, source of sound negative pole end, signal input part and treats that lead such as trigger end is external.

Figure 10: the stereogram of the present invention the threeth embodiment, explanation will excite sheet to make disc, and in conjunction with a damping pad and with the lead made piezoelectric loudspeaker of the company of weldering mutually.

Figure 11: the stereogram of another additional example of piezoelectric loudspeaker of the present invention, illustrate piezoelectric loudspeaker can with driving circuit chip and flexible base plate thereof together module be integral.

Figure 12: the stereogram of the another additional example of piezoelectric loudspeaker of the present invention, illustrate piezoelectric loudspeaker can with driving circuit chip and flexible base plate thereof together module on an insulating base frame.

Schematic diagram cuts open in the office of Figure 13: Figure 12, and the output port of this flexible base plate of supplemental instruction is to be connected on the top layer silver paste and metallic plate that excites sheet.

Figure 14: disclose the cut-away view of the 4th section of embodiment of the present invention, explanation will excite sheet to make disc, and the embedding group has piezoelectric buzzer made in the housing of caulking groove in one.

Figure 15: the present invention presses the cut-away view of another additional example of buzzer, and explanation will excite sheet to make disc, and be mounted on one have the ring rib the embedded made piezoelectric buzzer of housing.

Embodiment:

As shown in Figure 1, be the piezoelectric ceramic complex 11 of first item embodiment of the present invention and the three-dimensional exploded view of making that excites sheet 1 thereof, it is stacked mutually to comprise a top layer ceramic wafer 111, a bottom ceramic wafer 113 and a middle level ceramic wafer 112 that will present rectangle, all presses with high temperature sintering through hot water to form; Wherein:

As shown in Figure 1 and Figure 2, be coated with first silver palladium layer 31 between the composition surface of this top layer ceramic wafer 111 and middle level ceramic wafer 112, be coated with second silver palladium layer 32 between the composition surface of this middle level ceramic wafer 112 and bottom ceramic wafer 113; This silver palladium layer 31 and 32 is formed by the silver palladium alloy coating, can make each ceramic wafer through combining closely into ceramic composite in the process of high temperature sintering, and makes between each silver palladium layer and all be partitioned into the form (as shown in Figure 2) of insulation mutually by ceramic wafer;

Respectively be provided with an insulated hole on above-mentioned each silver palladium layer; In the present embodiment, on first silver palladium layer 31, be formed with first insulated hole 311, on second silver palladium layer 32, be formed with second insulated hole 321; And offer the anodal through hole 13 and another negative pole through hole 14 (as shown in Figure 2) that are connected between each ceramic wafer;

This positive pole through hole 13 forms an anodal apical pore 131 in the end face of top layer ceramic wafer 111, be communicated with top layer ceramic wafer 111, middle level ceramic wafer 112, second silver palladium layer 32 and bottom ceramic wafer 113 in regular turn, and form an anodal bottom outlet 132 in the bottom surface of this bottom ceramic wafer 113, anodal therebetween through hole 13 can pass first insulated hole 311 and with 31 insulation of first silver palladium layer; This negative pole through hole 14 is also offered a negative pole apical pore 141 in the end face of top layer ceramic wafer 111, be communicated with top layer ceramic wafer 111, first silver palladium layer 31, middle level ceramic wafer 112 and bottom ceramic wafer 113 in regular turn, and form a negative pole bottom outlet 142 in the bottom surface of this bottom ceramic wafer 113, therebetween negative pole through hole 14 can pass second insulated hole 321 and with 32 insulation of second silver palladium layer;

After the semi-finished product 11 of above-mentioned complex are made, can be with a top layer silver paste 21 (as shown in Figure 3) in the end face coating of top layer ceramic wafer 111, and with another bottom silver paste 22 in the bottom surface coating of bottom ceramic wafer 113, the silver paste 21 and 22 of this top, bottom when coating separately landfill in anodal through hole 13 and negative pole through hole 14; And top layer silver paste 21 can expose a top layer insulated hole 211 in negative pole apical pore 141 peripheries, top layer silver paste 21 can be insulated mutually with the silver paste in the negative pole apical pore 141, bottom silver paste 22 can expose a bottom insulated hole 221 in anodal bottom outlet 132 peripheries simultaneously, and bottom silver paste 22 can be insulated mutually with the silver paste in the anodal bottom outlet 132; In view of the above, make between this top layer silver paste 21 and second silver palladium layer 32, be conducted and form an anodal loop 130 by burying the anodal through hole 13 that is filled with silver metal; Also make between the bottom silver paste 22 and first silver palladium layer 31, be conducted and form another negative loop 140 by burying the negative pole through hole 14 that is filled with silver metal; Make a piezoelectric ceramic complex 11 according to this, and can use, and can use with the contact jaw that exposes of bottom silver paste 22 as negative loop 140 with the contact jaw that exposes of top layer silver paste 21 as anodal loop 130.

The present invention comprises in addition and takes one or two above-mentioned complex 11, its bottom silver paste 22 is attached on the side or bilateral end face of a square type metallic plate 12 (as Fig. 1 and shown in Figure 4), has an end of exposing 121 on this metallic plate 12, use as the negative pole link, and use as anode connection terminal with the top layer silver paste 21 of two above-mentioned complexs 11, and then be built into the piezoelectric type that has complex 11 at least one side end face and excite sheet 1.

State when exciting sheet 1 in the use, can be on the top layer silver paste 21 that two ends expose the company's of weldering one anodal signal power supply, and weldering connects a negative pole signal power supply (as shown in Figure 4) on the end 121 that metallic plate 12 exposes, can make the top layer silver paste 21 and second silver palladium layer 32 conduct anodal signal voltage simultaneously via anodal loop 130, and make metallic plate 12 via negative loop 140, the bottom silver paste 22 and first silver palladium layer 31 conduct the negative pole signal voltage simultaneously, and then formation has just adjacent between each layer ceramic wafer and this metallic plate 12, the galvanic circle of negative pole signal voltage, to reach the purpose that reduces driving voltage, in order to obtaining preferable audio output quality.

Second section of embodiment of the present invention is for taking the technology (as shown in Figure 5) of above-mentioned at least one latter sheet 1 to make a piazo-exciter.Mainly be encapsulation one an anodal conductive component 41 and a negative pole conductive component 42 in an insulating base frame 4, and excite sheet 1 embedding group on this pedestal 4, (to cooperate shown in Fig. 6,7) at least one; Wherein:

This positive pole conductive component 41 is extended with three and presses contravention 411 (as shown in Figure 6), only excite the top layer silver paste 21 on the sheet 1 to rabbet mutually with each respectively, and should also be extended with three external connection end 413,414,412 that expose to top, bottom and a side of insulating base frame 4 by positive pole conductive component 41;

This negative pole conductive component 42 offers two and presss from both sides mouthful 421 (as shown in Figure 7), respectively with above-mentioned two metallic plates 12 that excite sheet 1 on the end 121 of exposing rabbet mutually, and this negative pole conductive component 42 also is extended with three external connection end 423,424,422 that expose to top, bottom and a side side of insulating base frame 4;

In view of the above, can utilize a connector 5 and the external connection end 412,422 of piazo-exciter one side to join (as shown in Figure 5), with receiving connector 5 supply signal voltages; Also can utilize external connection end 414,424 to insert in the substrate 6 corresponding slots 61 (as shown in Figure 8), with the circuit 62 supply signal voltages that receive substrate 6, and then the driving piazo-exciter produces resonance to play sound.

In addition, also the drive circuit that piazo-exciter can be used makes chip 7 (Dice) form, and is integral (as shown in Figure 9) with the piazo-exciter module; Wherein:

This drive circuit is an integrated circuit (IC) that is combined by a DC converter (DC converter) and amplifier (AMP), and the input port of this chip 7 has a source of sound positive terminal (V+) 71, source of sound negative pole end (V-) 72, signal input part (Signal Input, SI) 73 with treat trigger end (Standby mode, SM) 74 leads such as grade external (shown in Fig. 9 and Fig. 9 a); The output port of this chip 7 is directly to inlay (mount) on the external connection end 413,423 at pedestal 4 tops, in order to transmit signal voltage to piazo-exciter.

The present invention also comprises the threeth embodiment to disclose a kind of piezoelectric loudspeaker manufacturing technology of (as shown in figure 10).Mainly excite sheet to make disc 10 with above-mentioned at least one, have complex 110 identical and metallic plate 120 on the circular excitation sheet 10 with above-mentioned complex technique, and has an end of exposing 122 on this metallic plate 120 at least, and a damping pad 8 is set on this end 122, in order to improve low frequency audio quality, the glue material that this damping pad 8 is pasted character by a high damping and tool is made, and makes this piezoelectric loudspeaker according to this; And the employed disc of this piezoelectric loudspeaker excites on the sheet 10, also can only attach a complex 110 on the one-sided end face of metallic plate 120.

In addition, this piezoelectric loudspeaker also can have same audio source positive terminal, source of sound negative pole end, signal input part and treat that the drive circuit chip 70 (as shown in figure 11) of trigger end is linked to be a module with above-mentioned, the output port of this chip 70 has extended a flexible base plate 60 (FPC), it has positive and negative electrode output 601 and 602, this cathode output end 601 is connected with the top layer silver paste 210 of two multilayer piezoelectric ceramic complexs 110 respectively, 602 of this cathode output ends are connected with metallic plate 120, according to this drive circuit chip 70 and piezoelectric loudspeaker module are integral.

Perhaps, above-mentioned module can be had the piezoelectric loudspeaker of driving circuit chip 70, be cemented at the containing hole 401 interior (shown in Figure 12,13) of an insulating base frame 40, it is equal to the foregoing description in structure.

The present invention comprises the 4th section of embodiment more to disclose a kind of piezoelectric buzzer manufacturing technology of (as shown in figure 14).It mainly is bottom silver paste 220 with a disc piezoelectric ceramic complex 110, be attached on the end face of a disc metallic plate 120 and excite sheet 10a to form a piezoelectric type, and has an end of exposing 122 on this metallic plate 120 at least, and can be with exciting sheet 10a embedding group to have in the housing 9 of caulking groove 911 in one by this end 122, with silica gel 94 that this end 122 is mutually cemented with caulking groove 911 again; These housing 9 one distolateral sound holes 92 that are formed with can spread out of this sound that excites sheet 10a to send via sound hole 92, and this housing 9 another distolateral embedding group one substrate 6a; This substrate 6a has a cathode output end 603 that links to each other with the top layer silver paste 210 of complex 110, and another and the cathode output end 604 that end 122 is connected that exposes of metallic plate 120, and this substrate 6a has an electrode input end 931 and another negative input 932, in order to external positive and negative electrode signal power supply, resonate and sound with the generation of drive pressure electric buzzer.

In addition, between the positive and negative electrode output 603 and 604 (as shown in figure 15) and positive and negative electrode input 931 and 932 of this substrate 6a, module one has the drive circuit chip 70a of source of sound positive terminal and source of sound negative pole end, the source of sound positive terminal of this chip 70a is connected with the electrode input end 931 of substrate 6a, and the source of sound negative pole end of this chip 70a is connected with the negative input 932 of substrate 6a, and the output port of this chip 70a is connected with cathode output end 604 and the cathode output end 604 of substrate 6a respectively simultaneously.In addition, also can latter sheet 10a can be mounted on one by this end 122 and have in the housing 90 that encircles rib 912 (as shown in figure 15), with silica gel 94 that this end 122 is mutually cemented with ring rib 912 again, it is in being equal to the foregoing description.

Piazo-exciter, piezoelectric loudspeaker and piezoelectric buzzer that the present invention is above-mentioned all can reach connection of simplifying between each signal end and the purpose of avoiding lead to expose, and be able to than the low driving voltage excitation resonance to produce melodious audio.

The explanation of comprehensive the foregoing description, believe and disclose particular content of the present invention in detail, but the present invention's technology is not limited thereto, and the equivalence techniques of making simple modification such as according to content such as above-mentioned and aftermentioned claim all should be under the jurisdiction of the present invention's application category, and gives Chen Ming.

Claims (10)

1. piezoelectric ceramic complex includes:
One top layer ceramic wafer, a bottom ceramic wafer and a middle level ceramic wafer, described ceramic wafer is stacked mutually, all presses with high temperature sintering through hot water to form;
Be provided with the anodal through hole and the negative pole through hole that are connected between each ceramic wafer; And be coated with silver-colored palladium between the composition surface of each ceramic wafer, with as separately anodal silver palladium layer and negative pole silver palladium layer;
Each silver palladium layer is provided with an insulated hole, and anodal silver palladium layer is insulated mutually with the negative pole through hole, and the negative pole silver palladium layer is insulated mutually with anodal through hole;
The end face of this top layer ceramic wafer is coated with the top layer silver paste, and landfill forms the anodal loop of interior argentiferous, with conducting top layer silver paste and anodal silver palladium layer in anodal through hole; And
The bottom surface of this bottom ceramic wafer is coated with the bottom silver paste, and landfill forms the negative loop of interior argentiferous, with conducting bottom silver paste and negative pole silver palladium layer in the negative pole through hole;
Composition by above-mentioned member, can be with the expose contact jaw of top layer silver paste as anodal loop, and with the expose contact jaw of bottom silver paste, and after connecting the positive and negative electrode signal power supply, can between each layer ceramic wafer, form galvanic circle with adjacent positive and negative electrode signal voltage as negative loop.
2. the piazo-exciter that the piezoelectric ceramic complex is made excites sheet in conjunction with a metallic plate to make a piezoelectric type by at least one complex, excites sheet embedding group in an insulating base frame by at least one again, to constitute a piazo-exciter; It is characterized by:
This complex, stacked mutually by a top layer ceramic wafer, a bottom ceramic wafer and a middle level ceramic wafer, all press with high temperature sintering through hot water to form;
Be provided with the anodal through hole and the negative pole through hole that are connected between each ceramic wafer; And be coated with silver-colored palladium between the composition surface of each ceramic wafer, with as separately anodal silver palladium layer and negative pole silver palladium layer;
Each silver palladium layer is provided with an insulated hole, and anodal silver palladium layer is insulated mutually with the negative pole through hole, and the negative pole silver palladium layer is insulated mutually with anodal through hole;
The end face of this top layer ceramic wafer is coated with the top layer silver paste, and landfill forms the anodal loop of interior argentiferous, with conducting top layer silver paste and anodal silver palladium layer in anodal through hole;
The bottom surface of this bottom ceramic wafer is coated with the bottom silver paste, and landfill forms the negative loop of interior argentiferous, with conducting bottom silver paste and negative pole silver palladium layer in the negative pole through hole;
The piezoelectric ceramic complex that possesses the positive and negative electrode galvanic circle by above-mentioned parts composition one;
The bottom silver paste of this complex is attached on the end face of metallic plate, to connect negative loop to metallic plate, and have the contact jaw of an end of exposing on this metallic plate,, form one according to this and excite sheet simultaneously with the contact jaw that exposes of this top layer silver paste as anodal loop as negative loop; And
This insulating base frame inside is packaged with an anodal conductive component and a negative pole conductive component at least, and above-mentioned at least one of embedding group excites sheet in this pedestal, top layer silver paste and anodal conductive component are halved together, and make metallic plate expose the end and the negative pole conductive component is halved together, and all being extended with at least one external connection end on this positive and negative electrode conductive component exposes to outside the insulating base frame, in order to external positive and negative electrode signal power supply, to drive piazo-exciter generation resonance and to sound.
3. the piazo-exciter of making as piezoelectric ceramic complex as described in the claim 2, it is characterized in that, wherein one is formed in the output port embedding of the external connection end of this insulating base frame and driving circuit chip, the input port of this chip has a source of sound positive terminal, source of sound negative pole end, signal input part and treats trigger end, in order to transmit signal voltage to piazo-exciter.
4. the piezoelectric loudspeaker that the piezoelectric ceramic complex is made excites sheet in conjunction with a metallic plate to make a piezoelectric type by at least one complex, excites sheet to form a piezoelectric loudspeaker by at least one again; It is characterized by:
This complex, stacked mutually by a top layer ceramic wafer, a bottom ceramic wafer and a middle level ceramic wafer, all press with high temperature sintering through hot water to form;
Be provided with the anodal through hole and the negative pole through hole that are connected between each ceramic wafer; And be coated with silver-colored palladium between the composition surface of each ceramic wafer, with as separately anodal silver palladium layer and negative pole silver palladium layer;
Each silver palladium layer is provided with an insulated hole, and anodal silver palladium layer is insulated mutually with the negative pole through hole, and the negative pole silver palladium layer is insulated mutually with anodal through hole;
The end face of this top layer ceramic wafer is coated with the top layer silver paste, and landfill forms the anodal loop of interior argentiferous, with conducting top layer silver paste and anodal silver palladium layer in anodal through hole;
The bottom surface of this bottom ceramic wafer is coated with the bottom silver paste, and landfill forms the negative loop of interior argentiferous, with conducting bottom silver paste and negative pole silver palladium layer in the negative pole through hole;
The piezoelectric ceramic complex that possesses the positive and negative electrode galvanic circle by above-mentioned parts composition one;
The bottom silver paste of this complex is attached on the end face of metallic plate, to connect negative loop to metallic plate, and have the contact jaw of an end of exposing on the metallic plate,, form one according to this and excite sheet simultaneously with the contact jaw that exposes of top layer silver paste as anodal loop as negative loop; And
Exposing of this metallic plate is adhesive with a damping pad on the end, form a piezoelectric loudspeaker according to this.
5. the piezoelectric loudspeaker of making as piezoelectric ceramic complex as described in the claim 4, it is characterized by: wherein be connected with the drive circuit chip that a tool is provided with source of sound positive terminal, source of sound negative pole end, signal input part and treats trigger end on this piezoelectric loudspeaker, the output port of this chip is extended with a flexible base plate with positive and negative electrode output, this cathode output end is connected on the top layer silver paste of complex, this cathode output end then is connected with metallic plate, in order to transmit signal voltage to piezoelectric loudspeaker.
6. the piezoelectric loudspeaker of making as piezoelectric ceramic complex as described in the claim 5, it is characterized by: wherein this piezoelectric loudspeaker is cemented in the containing hole of an insulating base frame.
7. the piezoelectric buzzer that the piezoelectric ceramic complex is made excites sheet in conjunction with a metallic plate to make a piezoelectric type by at least one complex, excites sheet embedding group in a housing by at least one again, to constitute a piezoelectric buzzer; It is characterized by:
This complex by a top layer ceramic wafer, a bottom ceramic wafer and the mutual storehouse of a middle level ceramic wafer, all presses with high temperature sintering through hot water to form;
Be provided with the anodal through hole and the negative pole through hole that are connected between each ceramic wafer; And be coated with silver-colored palladium between the composition surface of each ceramic wafer, with as separately anodal silver palladium layer and negative pole silver palladium layer;
Each silver palladium layer is provided with an insulated hole, and anodal silver palladium layer is insulated mutually with the negative pole through hole, and the negative pole silver palladium layer is insulated mutually with anodal through hole;
The end face of this top layer ceramic wafer is coated with the top layer silver paste, and landfill forms the anodal loop of interior argentiferous, with conducting top layer silver paste and anodal silver palladium layer in anodal through hole;
The bottom surface of this bottom ceramic wafer is coated with the bottom silver paste, and landfill forms the negative loop of interior argentiferous, with conducting bottom silver paste and negative pole silver palladium layer in the negative pole through hole;
The piezoelectric ceramic complex that possesses the positive and negative electrode galvanic circle by above-mentioned parts composition one;
The bottom silver paste of this complex is attached on the end face of metallic plate, to connect negative loop to metallic plate, and have the contact jaw of an end of exposing on this metallic plate at least as negative loop, with the expose contact jaw of this top layer silver paste, form one according to this and excite sheet simultaneously as anodal loop; And
Embedded group of this housing has a substrate and above-mentioned at least one to excite sheet, this substrate has the cathode output end that the end is connected that exposes of a cathode output end that links to each other with the top layer silver paste of complex and another and metallic plate, and this substrate has a positive and negative electrode input, in order to external positive and negative electrode signal power supply, resonate and sound with the generation of drive pressure electric buzzer.
8. the piezoelectric buzzer of making as piezoelectric ceramic complex as described in the claim 7, it is characterized by: wherein between the positive and negative electrode output and positive and negative electrode input of this substrate, connect a drive circuit chip with source of sound positive terminal and source of sound negative pole end and form module, the source of sound positive terminal of this chip is connected with the electrode input end of substrate, and the source of sound negative pole end of this chip is connected with the negative input of substrate, and the output port of this chip is connected with the cathode output end and the cathode output end of substrate respectively simultaneously.
9. the piezoelectric buzzer of making as piezoelectric ceramic complex as described in the claim 7 is characterized by: exposing on the caulking groove of end embedding group in housing of this metallic plate wherein, and make this end mutually cemented with caulking groove.
10. the piezoelectric buzzer of making as piezoelectric ceramic complex as described in the claim 7 is characterized by: exposing on the ring rib of end embedding group in housing of this metallic plate wherein, and make this end and to encircle rib mutually cemented.
CNB2005100908760A 2005-08-18 2005-08-18 Compound body of piezoelectric ceramics, and energizer, speaker or buzzer produced from piezoelectric ceramics CN100431186C (en)

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CN101369626B (en) * 2008-09-12 2010-06-02 瑞声声学科技(常州)有限公司 Production method of novel piezoelectric ceramic sensor

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CN1270152A (en) * 1999-04-08 2000-10-18 株式会社村田制作所 Piazoelectric ceramic composition, buzzer thereof and controller
JP2003258328A (en) * 2002-02-27 2003-09-12 Kyocera Corp Stacked piezoelectric actuator
WO2003094252A2 (en) * 2002-05-06 2003-11-13 Epcos Ag Piezoactuator and method for the production thereof

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Publication number Priority date Publication date Assignee Title
CN1270152A (en) * 1999-04-08 2000-10-18 株式会社村田制作所 Piazoelectric ceramic composition, buzzer thereof and controller
JP2003258328A (en) * 2002-02-27 2003-09-12 Kyocera Corp Stacked piezoelectric actuator
WO2003094252A2 (en) * 2002-05-06 2003-11-13 Epcos Ag Piezoactuator and method for the production thereof

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