CN212137560U - Piezoelectric vibration motor and electronic device - Google Patents
Piezoelectric vibration motor and electronic device Download PDFInfo
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- CN212137560U CN212137560U CN202020608294.7U CN202020608294U CN212137560U CN 212137560 U CN212137560 U CN 212137560U CN 202020608294 U CN202020608294 U CN 202020608294U CN 212137560 U CN212137560 U CN 212137560U
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- circuit board
- piezoelectric
- flexible circuit
- vibration motor
- piezoelectric layer
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Abstract
The utility model discloses a piezoelectricity vibrating motor and electronic equipment, including flexible circuit board, piezoelectric layer, electrode layer and control chip. The flexible circuit board is configured to be bendable. The piezoelectric layer is located on one surface of the flexible circuit board, and is electrically connected with the flexible circuit board, and the piezoelectric layer is configured to generate an electric signal after being subjected to pressure. The electrode layer is located on a surface of the piezoelectric layer facing away from the flexible circuit board. The control chip is electrically connected with the flexible circuit board and is configured to transmit vibration current to the electrode layer and the flexible circuit board to form an electric field after receiving an electric signal so as to drive the piezoelectric layer to vibrate. Therefore, in the embodiment, the circuit board of the piezoelectric vibration motor is a flexible circuit board, so that the piezoelectric vibration motor can be bent and folded, thereby meeting the requirements of electronic equipment on thinning and flexibility.
Description
Technical Field
The utility model relates to a piezoelectric motor field especially relates to a piezoelectric vibration motor and electronic equipment.
Background
The piezoelectric motor is an electric motor that performs electromechanical energy conversion using a piezoelectric inverse effect of a piezoelectric body, and includes a circuit board, a piezoelectric layer, and an electrode layer. The piezoelectric effect is a phenomenon in which electric charges are generated due to a polarization phenomenon of internal electric charges when a piezoelectric layer is deformed by an external force of bending or stretching in a certain direction.
At present, piezoelectric motor's circuit board all is the stereoplasm material, and on some flexible electronic equipment, traditional piezoelectric motor is difficult to use, consequently does not satisfy the demand of electronic product to slimming and flexibility, influences user experience.
SUMMERY OF THE UTILITY MODEL
The utility model provides a piezoelectric vibrating motor can be applied to flexible electronic equipment.
According to the utility model discloses a first aspect provides a rack, include:
a flexible circuit board configured to be bendable;
the piezoelectric layer is arranged on one surface of the flexible circuit board and is electrically connected with the flexible circuit board, and the piezoelectric layer is configured to generate an electric signal after being subjected to pressure;
the electrode layer is positioned on the surface of the piezoelectric layer, which faces away from the flexible circuit board;
and the control chip is electrically connected with the flexible circuit board and is configured to transmit vibration current to the electrode layer and the flexible circuit board to form an electric field after receiving the electric signal so as to drive the piezoelectric layer to vibrate.
The effects in the above embodiment are: in this embodiment, the circuit board of the piezoelectric vibration motor is a flexible circuit board, so that the piezoelectric vibration motor can be bent and bent, thereby meeting the requirements of electronic equipment for thinning and flexibility.
Optionally, the flexible circuit board comprises a first surface for providing the piezoelectric layer;
an orthographic projection of the piezoelectric layer lies entirely within the first surface in a direction perpendicular to the first surface.
The effects in the above embodiment are: the orthographic projection of the piezoelectric layer lies entirely within the first surface, which may indirectly define that the area dimension of the flexible circuit board is larger than the area dimension of the piezoelectric layer, such that the piezoelectric layer lies entirely within the electric field formed by the flexible circuit board and the electrode layer.
Optionally, the thickness dimension of the flexible circuit board is between 25-125 um.
The effects in the above embodiment are: the thickness of the flexible circuit board is within 25-125um, which can effectively improve the bending performance of the piezoelectric vibration motor.
Optionally, the piezoelectric layer is applied to the first surface of the flexible circuit board.
The effects in the above embodiment are: the piezoelectric layer is coated on the flexible circuit board, which is beneficial to thinning the piezoelectric vibration motor.
Optionally, the number of piezoelectric layers is multiple, and each piezoelectric layer is arranged on the first surface in a rectangular array.
Optionally, the thickness dimension of the piezoelectric layer is between 7-11 um.
The effects in the above embodiment are: the thickness of the piezoelectric layer is 25-125um, which can effectively improve the bending performance of the piezoelectric vibration motor.
Optionally, an orthographic projection of the electrode layer completely covers an orthographic projection of the piezoelectric layer in a direction perpendicular to the first surface.
The effects in the above embodiment are: the orthographic projection of the electrode layer completely covers the orthographic projection of the piezoelectric layer, and the area size of the electrode layer can be indirectly defined to be larger than that of the piezoelectric layer, so that the piezoelectric layer is completely positioned in an electric field formed by the flexible circuit board and the electrode layer.
Optionally, the material of the electrode layer is silver.
Optionally, the connecting member is used for connecting the flexible circuit board and the electrode layer to electrically connect the flexible circuit board and the electrode layer.
According to a second aspect of the present invention, there is provided an electronic apparatus, comprising:
a flexible member;
the vibration motor of any of the above is connected to the flexible member, and the electrode layer and the flexible circuit board are configured to drive the piezoelectric layer to vibrate when an electric field is formed and to transmit the vibration to the flexible member.
The effects in the above embodiment are: the electronic equipment in the embodiment adopts the piezoelectric vibration motor, and can realize flexible bending performance, thereby improving the product competitiveness and the practicability of the product.
The utility model provides a pair of piezoelectricity vibrating motor and electronic equipment, piezoelectricity vibrating motor include flexible circuit board, piezoelectric layer, electrode layer and control chip. The flexible circuit board is configured to be bendable. The piezoelectric layer is located on one surface of the flexible circuit board, and is electrically connected with the flexible circuit board, and the piezoelectric layer is configured to generate an electric signal after being subjected to pressure. The electrode layer is located on a surface of the piezoelectric layer facing away from the flexible circuit board. The control chip is electrically connected with the flexible circuit board and is configured to transmit vibration current to the electrode layer and the flexible circuit board to form an electric field after receiving an electric signal so as to drive the piezoelectric layer to vibrate. Therefore, in the embodiment, the circuit board of the piezoelectric vibration motor is a flexible circuit board, so that the piezoelectric vibration motor can be bent and folded, thereby meeting the requirements of electronic equipment on thinning and flexibility.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a sectional view of a piezoelectric vibration motor according to an embodiment of the present invention;
fig. 2 is a sectional view of a piezoelectric vibration motor according to an embodiment of the present invention, in which a connection member is illustrated.
The attached drawings indicate the following:
100. piezoelectric vibration motor, 110, flexible circuit board, 111, first surface, 120, piezoelectric layer, 130, electrode layer, 140, connecting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
At present, piezoelectric motor's circuit board all is the stereoplasm material, and on some flexible electronic equipment, traditional piezoelectric motor is difficult to use, consequently does not satisfy the demand of electronic product to slimming and flexibility, influences user experience.
In view of the above technical problem, as shown in fig. 1, a first embodiment of the present invention provides a piezoelectric vibration motor 100. The piezoelectric vibration motor 100 includes a flexible circuit board 110, a piezoelectric layer 120, an electrode layer 130, and a control chip (not shown). The flexible circuit board 110 is configured to be bendable. Piezoelectric layer 120 is disposed on one surface of flexible circuit board 110, and piezoelectric layer 120 is electrically connected to flexible circuit board 110, and piezoelectric layer 120 is configured to generate an electrical signal when subjected to a pressure. The electrode layer 130 is located on a surface of the piezoelectric layer 120 facing away from the flexible circuit board 110. The control chip is electrically connected to the flexible circuit board 110 and configured to transmit a vibration current to the electrode layer 130 and the flexible circuit board 110 to form an electric field after receiving an electrical signal, so as to drive the piezoelectric layer 120 to vibrate.
In this embodiment, the circuit board of the piezoelectric vibration motor 100 is the flexible circuit board 110, so that the piezoelectric vibration motor 100 can be bent and folded, thereby meeting the requirements of electronic devices for thinning and flexibility, and improving the competitiveness and user experience of electronic products.
The flexible circuit board 110 includes a first surface 111 for disposing the piezoelectric layer 120, and an orthogonal projection of the piezoelectric layer 120 is entirely located within the first surface 111 in a direction perpendicular to the first surface 111.
The area size of the flexible circuit board 110 is larger than that of the piezoelectric layer 120, so that the piezoelectric layer 120 is completely located between the flexible circuit board 110 and the electrode layer 130, thereby ensuring the driving effect of the electric field formed by the electrode layer 130 and the flexible circuit board 110 on the piezoelectric layer 120.
In order to ensure the flexural performance of the piezoelectric vibration motor 100, the thickness of the flexible circuit board 110 may be 25-125um in this embodiment. That is, the thickness dimension of the flexible circuit board 110 may be 25um, 100um, or 125 um. However, the thickness of the flexible printed circuit board 110 is only a preferred data, and all the structures having the same structure as the present embodiment to realize the bending performance of the piezoelectric vibration motor 100 are within the scope of the present invention.
The piezoelectric layer 120 may have any shape. In this embodiment, the piezoelectric layer 120 may be coated on the first surface 111 of the flexible circuit board 110. It should be noted that the piezoelectric layer 120 can also be evaporated or adhered to the first surface 111 of the flexible circuit board 110, and the application of the piezoelectric layer 120 to the first surface 111 of the flexible circuit board 110 is merely for illustrative purposes, and the process of forming the piezoelectric layer 120 on the first surface 111 is not limited thereto.
In order to obtain a better vibration effect, in the present embodiment, the number of the piezoelectric layers 120 of the piezoelectric vibration motor 100 may be multiple, and each piezoelectric layer 120 is arranged on the first surface 111 in a rectangular array. Without limitation, each piezoelectric layer 120 may be arranged on the first surface 111 of the flexible circuit board 110 in an array of any shape, for example, each piezoelectric layer 120 may also be in a circular array. It is to be understood that when the piezoelectric vibration motor 100 has a rectangular shape, each piezoelectric layer 120 arranged in a rectangular array is a preferred embodiment. When the piezoelectric vibration motor 100 is circular, the piezoelectric layers 120 arranged in a circular array are preferred.
When the piezoelectric vibration motor 100 is rectangular, the piezoelectric layers 120 may be arranged on the first surface 111 of the flexible circuit board 110 at equal intervals with a predetermined distance therebetween, and the bending performance of the piezoelectric vibration motor 100 may be significantly improved by reserving the predetermined distance between the piezoelectric layers 120.
In this embodiment, the thickness dimension of the piezoelectric layer 120 can be between 7-11 um. To further improve the bending performance of the piezoelectric vibration motor 100, but not limited thereto, the thickness dimension of the piezoelectric layer 120 between 7 um and 11um is only illustrated schematically in this embodiment, and for the specific reason, please refer to the above embodiments, and therefore, the description thereof is omitted.
In the above embodiment, the orthographic projection of the electrode layer 130 completely covers the orthographic projection of the piezoelectric layer 120 in the direction perpendicular to the first surface 111.
The area size of the electrode layer 130 is larger than that of the piezoelectric layer 120, so that the piezoelectric layer 120 is completely located between the flexible circuit board 110 and the electrode layer 130, thereby ensuring the driving effect of the electric field formed by the electrode layer 130 and the flexible circuit board 110 on the piezoelectric layer 120. The material of the electrode layer 130 may be silver.
In some embodiments, as shown in fig. 2, the piezoelectric vibration motor 100 may further include a connecting member 140, where the connecting member 140 is used to connect the flexible circuit board 110 and the electrode layer 130, so as to electrically connect the flexible circuit board 110 and the electrode layer 130.
The present invention also provides an electronic device, which includes a flexible member (not shown in the figure) and the piezoelectric vibration motor 100. The piezoelectric vibration motor 100 is connected to a flexible member, and the electrode layer 130 of the piezoelectric vibration motor 100 and the flexible circuit board 110 are configured to drive the piezoelectric layer 120 to vibrate when an electric field is formed and transmit the vibration to the flexible member.
The electronic device may be a smart watch, the flexible member may be a watch band of the smart watch, and the piezoelectric vibration motor 100 may be attached to the watch band to implement a vibration feedback function according to a piezoelectric effect of the watch band. But not limited thereto, the smart watch is only an illustrative smart product, and the electronic device may also be a smart band or the like.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplified description, and it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present invention, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A piezoelectric vibration motor, characterized by comprising:
a flexible circuit board (110) configured to be bendable;
the piezoelectric layer (120) is positioned on one surface of the flexible circuit board (110), the piezoelectric layer (120) is electrically connected with the flexible circuit board (110), and the piezoelectric layer (120) can generate an electric signal after being subjected to pressure;
an electrode layer (130) located on a surface of the piezoelectric layer (120) facing away from the flexible circuit board (110);
and the control chip is electrically connected with the flexible circuit board (110) and is configured to transmit a vibration current to the electrode layer (130) and the flexible circuit board (110) to form an electric field after receiving the electric signal so as to drive the piezoelectric layer (120) to vibrate.
2. A piezoelectric vibration motor according to claim 1,
the flexible circuit board (110) comprises a first surface (111) for arranging the piezoelectric layer (120);
an orthographic projection of the piezoelectric layer (120) lies entirely within the first surface (111) in a direction perpendicular to the first surface (111).
3. A piezoelectric vibration motor according to claim 1 or 2,
the thickness dimension of the flexible circuit board (110) is between 25-125 um.
4. A piezoelectric vibration motor according to claim 2,
the piezoelectric layer (120) is applied to the first surface (111) of the flexible circuit board (110).
5. A piezoelectric vibration motor according to claim 4,
the number of the piezoelectric layers (120) is multiple, and each piezoelectric layer (120) is arranged on the first surface (111) in a rectangular array.
6. A piezoelectric vibration motor according to claim 5,
the thickness dimension of the piezoelectric layer (120) is between 7-11 um.
7. A piezoelectric vibration motor according to any one of claims 2, 5 or 6,
in a direction perpendicular to the first surface (111), an orthogonal projection of the electrode layer (130) completely covers an orthogonal projection of the piezoelectric layer (120).
8. A piezoelectric vibration motor according to any one of claims 1, 2, 5 or 6,
the electrode layer (130) is made of silver.
9. A piezoelectric vibration motor as claimed in any one of claims 1, 2, 5 or 6, wherein said vibration motor further comprises:
and the connecting piece (140) is used for connecting the flexible circuit board (110) and the electrode layer (130) so as to realize the electrical connection between the flexible circuit board (110) and the electrode layer (130).
10. An electronic device, comprising:
a flexible member;
the piezoelectric vibration motor of any of claims 1-9 in combination with the flexure, the electrode layer (130) and the flexible circuit board (110) being configured to drive the piezoelectric layer (120) to vibrate when the electric field is formed and to transmit the vibration to the flexure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020608294.7U CN212137560U (en) | 2020-04-21 | 2020-04-21 | Piezoelectric vibration motor and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020608294.7U CN212137560U (en) | 2020-04-21 | 2020-04-21 | Piezoelectric vibration motor and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212137560U true CN212137560U (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020608294.7U Expired - Fee Related CN212137560U (en) | 2020-04-21 | 2020-04-21 | Piezoelectric vibration motor and electronic device |
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| CN (1) | CN212137560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238558A1 (en) * | 2020-05-25 | 2021-12-02 | 江西欧迈斯微电子有限公司 | Piezoelectric motor and electronic device |
-
2020
- 2020-04-21 CN CN202020608294.7U patent/CN212137560U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021238558A1 (en) * | 2020-05-25 | 2021-12-02 | 江西欧迈斯微电子有限公司 | Piezoelectric motor and electronic device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 330096 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi OMS Microelectronics Co.,Ltd. Address before: 330096 Jiangxi Nanchang Nanchang hi tech Industrial Development Zone, east of six road, south of Tianxiang Avenue. Patentee before: OFilm Microelectronics Technology Co.,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: 20201211 |