CN202385269U - Bicrystal piezoelectric ceramic chip and bicrystal piezoelectric ceramic loudspeaker made from same - Google Patents
Bicrystal piezoelectric ceramic chip and bicrystal piezoelectric ceramic loudspeaker made from same Download PDFInfo
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- CN202385269U CN202385269U CN2011205108090U CN201120510809U CN202385269U CN 202385269 U CN202385269 U CN 202385269U CN 2011205108090 U CN2011205108090 U CN 2011205108090U CN 201120510809 U CN201120510809 U CN 201120510809U CN 202385269 U CN202385269 U CN 202385269U
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- piezoelectric ceramic
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- silver electrode
- twin crystal
- crystal piezoelectric
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Abstract
The utility model discloses a bicrystal piezoelectric ceramic chip and a bi-crystal piezoelectric ceramic loudspeaker made from the same. The bicrystal piezoelectric ceramic chip is formed by overlapping two single-crystal piezoelectric ceramic chips with opposite polarization directions through sintering, wherein the top silver electrode layer of the upper single-crystal piezoelectric ceramic chip is used as an extraction electrode, mutually independent left electrode and right electrode are also respectively arranged on both sides of the top silver electrode layer, the polarities of the left electrode and the top silver electrode layer are the same, and the polarities of the left electrode and the right electrode are opposite. The utility model also discloses a bicrystal piezoelectric ceramic loudspeaker which comprises a front cover, a rear cover, elastic diaphragms arranged in the front cover and the rear cover, the bicrystal piezoelectric ceramic chip and a metal film frame. By adopting the extraction electrode structure on the bicrystal piezoelectric ceramic chip, the best capacitance of each bicrystal piezoelectric ceramic chip can be exerted in working, so that the bicrystal piezoelectric ceramic loudspeaker can exert the maximum volume, and the bass property can be greatly improved.
Description
Technical field
The utility model relates to a kind of twin crystal piezoelectric ceramic piece and reaches the twin crystal piezoelectric ceramic loudspeaker by its preparation.
Background technology
Twin crystal piezoelectric ceramic piece commonly used at present is stacked in together through low-temperature sintering by two opposite monocrystalline piezoelectric potsherds of polarised direction each other, and is provided with middle ceramic membrane lamella between two monocrystalline piezoelectric potsherds; The extraction electrode of said twin crystal piezoelectric ceramic piece is arranged on the end position of an end of upper strata monocrystalline piezoelectric potsherd; The structure of the twin crystal piezoelectric ceramic loudspeaker that is made up of this twin crystal piezoelectric ceramic piece mainly comprises: the middle part offers the protecgulum of sound through hole; The protecgulum internal fixation is provided with the elasticity vibrating diaphragm; The middle part of protecgulum is provided with the cavity that is beneficial to the vibration of elasticity vibrating diaphragm; The elasticity vibrating diaphragm is provided with the twin crystal piezoelectric ceramic piece, and bonnet is fixedly connected with protecgulum, and twin crystal piezoelectric ceramic piece, elasticity vibrating diaphragm all are arranged within bonnet and the protecgulum; Flexible print circuit board (being called for short FPCB) leads to the extraction electrode of twin crystal piezoelectric ceramic piece outside the bonnet, as the electric signal input end of twin crystal piezoelectric ceramic loudspeaker.The set-up mode of the extraction electrode of above-mentioned twin crystal piezoelectric ceramic piece can not have been given play to the optimal capacitance amount advantage of each monocrystalline piezoelectric potsherd; Thereby can not make whole twin crystal piezoelectric ceramic piece give play to best volume advantage, big by the twin crystal piezoelectric ceramic loudspeaker distortion of its preparation, bass performance is not good.
The utility model content
The technical problem that the utility model need solve is: a kind of twin crystal piezoelectric ceramic piece that can give play to best volume advantage will be provided; Second technical problem that the utility model need solve is: a kind of twin crystal piezoelectric ceramic loudspeaker that distortion is little, bass performance is excellent by this twin crystal piezoelectric ceramic piece preparation will be provided.
For solving above-mentioned first technical problem, the utility model has adopted following technical scheme.
Described twin crystal piezoelectric ceramic piece is stacked in together through sintering by two opposite monocrystalline piezoelectric potsherds of polarised direction each other, and is provided with middle ceramic membrane lamella between two monocrystalline piezoelectric potsherds; Be characterized in: the described structure of the monocrystalline piezoelectric potsherd of two mutual laminations up and down is: upper strata monocrystalline piezoelectric potsherd from inside to outside is followed successively by the first silver electrode layer, the first ceramic membrane lamella, the second silver electrode layer, the second ceramic membrane lamella, the 3rd silver electrode layer; Lower floor's monocrystalline piezoelectric potsherd is from interior the 4th silver electrode layer, the 4th ceramic membrane lamella, the 5th silver electrode layer, the 5th ceramic membrane lamella, the 6th silver electrode layer of being followed successively by outward; Described the 3rd silver electrode layer is as an extraction electrode; And also be respectively arranged with an extraction electrode in the both sides of the 3rd silver electrode layer; Be called left electrode and right electrode respectively; Independent mutually between left side electrode, right electrode and the 3rd silver electrode layer, left electrode is identical with the polarity of the 3rd silver electrode layer, and left electrode is opposite with right polarity of electrode; The first silver electrode layer and left electrode electrically connect each other, and the 4th silver electrode layer, the 6th silver electrode layer all are electrically connected with the 3rd silver electrode layer each other, and the second silver electrode layer, the 5th silver electrode layer all are electrically connected with right electrode each other.
Further, aforesaid twin crystal piezoelectric ceramic piece, wherein: left electrode and the 3rd silver electrode layer are electrically connected through conductive silver glue each other.
Further, aforesaid twin crystal piezoelectric ceramic piece, wherein: described left electrode and the 3rd silver electrode layer are negative pole, right electrode is anodal.
For solving above-mentioned second technical problem, the utility model has adopted following technical scheme.
Twin crystal piezoelectric ceramic loudspeaker by aforesaid twin crystal piezoelectric ceramic piece preparation; Comprise: the middle part offers the protecgulum of sound through hole; The protecgulum internal fixation is provided with the elasticity vibrating diaphragm; The middle part of protecgulum is provided with the cavity that is beneficial to the vibration of elasticity vibrating diaphragm, and be characterized in: the elasticity vibrating diaphragm is provided with aforesaid twin crystal piezoelectric ceramic piece and metallic film frame, and the metallic film frame is positioned at the periphery of twin crystal piezoelectric ceramic piece; Bonnet is fixedly connected with protecgulum, and twin crystal piezoelectric ceramic piece, elasticity vibrating diaphragm, metallic film frame all are arranged within bonnet and the protecgulum; Flexible print circuit board leads to left electrode, the 3rd silver electrode layer and right electrode outside the bonnet respectively, as the electric signal input end of said twin crystal piezoelectric ceramic loudspeaker.
Further, aforesaid twin crystal piezoelectric ceramic loudspeaker, wherein: said bonnet is airtight fully, is provided with the space that constitutes the sound chamber between bonnet and the described twin crystal piezoelectric ceramic piece.
The beneficial effect of the utility model is: on the twin crystal piezoelectric ceramic piece, adopt the described extraction electrode structure of the utility model; Can make each monocrystalline piezoelectric potsherd give play to best capacitance during work, thereby can make the twin crystal piezoelectric ceramic piece and give play to max volume by the twin crystal piezoelectric ceramic loudspeaker of its preparation; And its lowest resonant frequency is reduced, improved its bass performance greatly.In addition; Directly design the airtight bonnet of piezoelectric ceramic loudspeaker and reserve certain back cavity volume and constitute the sound chamber; The client needn't design ante-chamber and airtight back sound chamber in use more in addition like this; Improved design iterations and waste problem during piezoelectric ceramic loudspeaker is used effectively, made client cost reduce, for the client creates more competitive advantages.
Description of drawings
Fig. 1 is the structural principle sketch map of the described twin crystal piezoelectric ceramic piece of the utility model.
Fig. 2 is the plan structure sketch map of Fig. 1.
Fig. 3 is the structural representation of the described twin crystal piezoelectric ceramic loudspeaker of the utility model.
Fig. 4 is the structural representation of looking up of Fig. 3.
Fig. 5 is the plan structure sketch map of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Referring to Fig. 1, shown in Figure 2, described twin crystal piezoelectric ceramic piece 3 is stacked in together through low-temperature sintering by two opposite monocrystalline piezoelectric potsherds of polarised direction each other, and is provided with middle ceramic membrane lamella 33 between two monocrystalline piezoelectric potsherds; Be characterized in: the structure of the monocrystalline piezoelectric potsherd of described up and down two mutual laminations is: upper strata monocrystalline piezoelectric potsherd from inside to outside is followed successively by the first silver electrode layer 311, the first ceramic membrane lamella 312, the second silver electrode layer 313, the second ceramic membrane lamella 314, the 3rd silver electrode layer 315; Lower floor's monocrystalline piezoelectric potsherd is from interior the 4th silver electrode layer 321, the 4th ceramic membrane lamella 322, the 5th silver electrode layer 323, the 5th ceramic membrane lamella 324, the 6th silver electrode layer 325 of being followed successively by outward; Described the 3rd silver electrode layer 315 is as an extraction electrode; And also be respectively arranged with an extraction electrode in the both sides of the 3rd silver electrode layer 315; Be called left electrode 35 and right electrode 34 respectively; Independent mutually between left side electrode 35, right electrode 34 and the 3rd silver electrode layer 315, left electrode 35 is identical with the polarity of the 3rd silver electrode layer 315, and the polarity of left electrode 35 and right electrode 34 is opposite; The first silver electrode layer 311 electrically connects with left electrode 35 each other; The 4th silver electrode layer 321, the 6th silver electrode layer 325 are electrically connected with the 3rd silver electrode layer 315 each other; The second silver electrode layer 313, the 5th silver electrode layer 323 are electrically connected with right electrode 34 each other; During actual fabrication, the mode that can adopt conductive silver glue to be coated with end is carried out each relevant electrical connection; In the present embodiment, described left electrode 35 and the 3rd silver electrode layer 315 are negative pole, and right electrode 34 is anodal.When reality is used, can be in advance left electrode 35 and the 3rd silver electrode layer 315 be electrically connected through conductive silver glue each other.
Referring to Fig. 3, Fig. 4, shown in Figure 5; Twin crystal piezoelectric ceramic loudspeaker by the described twin crystal piezoelectric ceramic piece preparation of the utility model; Comprise: the middle part offers the protecgulum 1 of sound through hole 11, and protecgulum 1 internal fixation is provided with elasticity vibrating diaphragm 2, and the middle part of protecgulum is provided with the cavity 12 that is beneficial to 2 vibrations of elasticity vibrating diaphragm; Elasticity vibrating diaphragm 2 is provided with described twin crystal piezoelectric ceramic piece 3 of the utility model and metallic film frame 4; Metallic film frame 4 is positioned at the periphery of twin crystal piezoelectric ceramic piece 3, and bonnet 6 is fixedly connected with protecgulum 1, and twin crystal piezoelectric ceramic piece 3, elasticity vibrating diaphragm 2, metallic film frame 4 all are arranged within bonnet 6 and the protecgulum 1; Flexible print circuit board 5 leads to left electrode 35, the 3rd silver electrode layer 315 and right electrode 34 outside the bonnet 6 respectively, as the electric signal input end of said twin crystal piezoelectric ceramic loudspeaker.In the present embodiment: said bonnet 6 is airtight fully, and is provided with the space 7 that constitutes the sound chamber between bonnet 6 and the twin crystal piezoelectric ceramic piece 3.
The utility model has the advantages that: on twin crystal piezoelectric ceramic piece 3, adopt the described extraction electrode structure of the utility model; Can make each monocrystalline piezoelectric potsherd give play to best capacitance during work, thereby can make the twin crystal piezoelectric ceramic piece and give play to max volume by the twin crystal piezoelectric ceramic loudspeaker of its preparation; And its lowest resonant frequency is reduced, improved its bass performance greatly.In addition; Directly design the airtight bonnet of twin crystal piezoelectric ceramic loudspeaker and reserve certain back cavity volume and constitute the sound chamber; The client needn't design and supporting ante-chamber of loud speaker and airtight back sound chamber in use more in addition like this; Improved design iterations and waste problem during piezoelectric ceramic loudspeaker is used effectively, made client cost reduce, for the client creates more competitive advantage.
Claims (5)
1. the twin crystal piezoelectric ceramic piece is stacked in together through sintering by two opposite monocrystalline piezoelectric potsherds of polarised direction each other, and is provided with middle ceramic membrane lamella between two monocrystalline piezoelectric potsherds; It is characterized in that: the described structure of the monocrystalline piezoelectric potsherd of two mutual laminations up and down is: upper strata monocrystalline piezoelectric potsherd from inside to outside is followed successively by the first silver electrode layer, the first ceramic membrane lamella, the second silver electrode layer, the second ceramic membrane lamella, the 3rd silver electrode layer; Lower floor's monocrystalline piezoelectric potsherd is from interior the 4th silver electrode layer, the 4th ceramic membrane lamella, the 5th silver electrode layer, the 5th ceramic membrane lamella, the 6th silver electrode layer of being followed successively by outward; Described the 3rd silver electrode layer is as an extraction electrode; And also be respectively arranged with an extraction electrode in the both sides of the 3rd silver electrode layer; Be called left electrode and right electrode respectively; Independent mutually between left side electrode, right electrode and the 3rd silver electrode layer, left electrode is identical with the polarity of the 3rd silver electrode layer, and left electrode is opposite with right polarity of electrode; The first silver electrode layer and left electrode electrically connect each other, and the 4th silver electrode layer, the 6th silver electrode layer all are electrically connected with the 3rd silver electrode layer each other, and the second silver electrode layer, the 5th silver electrode layer all are electrically connected with right electrode each other.
2. twin crystal piezoelectric ceramic piece according to claim 1 is characterized in that: left electrode and the 3rd silver electrode layer are electrically connected through conductive silver glue each other.
3. twin crystal piezoelectric ceramic piece according to claim 1 and 2 is characterized in that: described left electrode and the 3rd silver electrode layer are negative pole, and right electrode is anodal.
4. the twin crystal piezoelectric ceramic loudspeaker for preparing by the described twin crystal piezoelectric ceramic piece of arbitrary claim in the claim 1 to 3; Comprise: the middle part offers the protecgulum of sound through hole; The protecgulum internal fixation is provided with the elasticity vibrating diaphragm; The middle part of protecgulum is provided with the cavity that is beneficial to the vibration of elasticity vibrating diaphragm, and it is characterized in that: the elasticity vibrating diaphragm is provided with described twin crystal piezoelectric ceramic piece and metallic film frame, and the metallic film frame is positioned at the periphery of twin crystal piezoelectric ceramic piece; Bonnet is fixedly connected with protecgulum, and twin crystal piezoelectric ceramic piece, elasticity vibrating diaphragm, metallic film frame all are arranged within bonnet and the protecgulum; Flexible print circuit board leads to left electrode, the 3rd silver electrode layer and right electrode outside the bonnet respectively, as the electric signal input end of said twin crystal piezoelectric ceramic loudspeaker.
5. twin crystal piezoelectric ceramic loudspeaker according to claim 4 is characterized in that: said bonnet is airtight fully, is provided with the space that constitutes the sound chamber between bonnet and the described twin crystal piezoelectric ceramic piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205108090U CN202385269U (en) | 2011-12-09 | 2011-12-09 | Bicrystal piezoelectric ceramic chip and bicrystal piezoelectric ceramic loudspeaker made from same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205108090U CN202385269U (en) | 2011-12-09 | 2011-12-09 | Bicrystal piezoelectric ceramic chip and bicrystal piezoelectric ceramic loudspeaker made from same |
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| Publication Number | Publication Date |
|---|---|
| CN202385269U true CN202385269U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205108090U Withdrawn - After Issue CN202385269U (en) | 2011-12-09 | 2011-12-09 | Bicrystal piezoelectric ceramic chip and bicrystal piezoelectric ceramic loudspeaker made from same |
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| Country | Link |
|---|---|
| CN (1) | CN202385269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611967A (en) * | 2011-12-09 | 2012-07-25 | 张家港市玉同电子科技有限公司 | Bicrystal piezoelectric ceramic wafer and bicrystal piezoelectric ceramic loudspeaker made by same |
| CN113242499A (en) * | 2021-06-18 | 2021-08-10 | 江苏波速传感器有限公司 | Ultra-thin twin crystal multilayer piezoceramics speaker unit |
-
2011
- 2011-12-09 CN CN2011205108090U patent/CN202385269U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611967A (en) * | 2011-12-09 | 2012-07-25 | 张家港市玉同电子科技有限公司 | Bicrystal piezoelectric ceramic wafer and bicrystal piezoelectric ceramic loudspeaker made by same |
| CN102611967B (en) * | 2011-12-09 | 2014-07-16 | 张家港市玉同电子科技有限公司 | Bicrystal piezoelectric ceramic wafer and bicrystal piezoelectric ceramic loudspeaker made by same |
| CN113242499A (en) * | 2021-06-18 | 2021-08-10 | 江苏波速传感器有限公司 | Ultra-thin twin crystal multilayer piezoceramics speaker unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120815 Effective date of abandoning: 20140716 |
|
| RGAV | Abandon patent right to avoid regrant |