CN116668823A

CN116668823A - Driving device and camera module

Info

Publication number: CN116668823A
Application number: CN202210152632.4A
Authority: CN
Inventors: 请求不公布姓名; 阙嘉耀; 赵波杰; 姚立锋
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2023-08-29

Abstract

The driving device comprises a fixed part with a containing cavity, an elastic member arranged in the containing cavity, a movable part movably suspended in the containing cavity through the elastic member, a driving part for driving the movable part to move relative to the fixed part, and a guide supporting structure formed between the movable part and the fixed part. In the application, the driving device increases the arrangement space of the driving part mainly by reasonably arranging the driving part and the guide supporting structure, and can improve the driving force of the driving part on the premise of not adding parts so as to simplify the design scheme for improving the driving force of the driving part and avoid the structural complexity of the driving part.

Description

Driving device and camera module

Technical Field

The application relates to the field of camera modules, in particular to a driving device and a camera module.

Background

With the popularity of mobile electronic devices, related technologies of camera modules used for mobile electronic devices to assist users in capturing images (e.g., videos or images) have been rapidly developed and advanced, and in recent years, camera modules have been widely used in various fields such as medical, security, industrial production, etc.

Along with the change and development of market demand, consumers are more and more various to the requirement of the module of making a video recording, for example, require the module of making a video recording to possess anti-shake function and focusing function to improve the imaging quality. An optical focusing (AF) function (or an auto-focusing function) refers to a function of forming a clear image at an image sensor (CMOS, CCD, or the like) located at the rear of a lens by linearly moving a carriage provided with the lens or a photosensitive chip in the optical axis direction. An optical anti-shake (OIS) function refers to a function of improving the sharpness of an image by adaptively moving a bracket or a photosensitive chip provided with a lens in a direction of compensating for shake when the lens shakes due to the shake. The motor is an indispensable element for forming the high-speed camera module, and can drive the lens to move in the working process of the camera module so as to realize the functions of optical focusing and optical anti-shake in the shooting process.

In order to meet the increasingly wide market demands, the volume and weight of optical components (for example, a photosensitive chip and an optical lens) of an image pickup module arranged in a terminal device are increasingly large, and the driving force requirement of a motor is also increasingly high.

In particular, as terminal devices are being miniaturized and thinned, current terminal devices (e.g., cellular phones) have a large limit on the volume of an image pickup module, however, in order to satisfy driving force for optical components, the volume occupied by a motor needs to be increased as the volume and weight of the optical components that it drives are increased. In the trend that the volume of the camera module is limited by miniaturization of the terminal equipment and the optical component is developed to be larger in volume and weight, the driving force provided by the existing motor is difficult to increase correspondingly.

In order to realize a good optical focusing and optical anti-shake function, it is necessary to realize a large-stroke drive of the optical member, however, the drive force of the conventional motor is difficult to be increased without increasing the volume of the motor. The heavier the optical component is under the premise of limited driving force, the shorter the stroke of the motor capable of driving the optical component to move will affect focusing and anti-shake capability.

In addition, the heavier the optical component, the slower the speed at which the motor drives the optical component to move, and the longer the optical component reaches a predetermined position, will also affect the focusing and anti-shake functions. In order to satisfy the driving speed of the motor to the optical component, the structure of the motor needs to be changed, which results in a complex motor structure, an increased number of parts, and a tendency of an increase in the thickness of the apparatus body.

Disclosure of Invention

An advantage of the present application is to provide a driving device and an image capturing module, in which the driving device can provide a larger installation space for a driving part of a driving part thereof, so that the volume of the driving part is increased to improve the driving force that the driving part can provide.

Another advantage of the present application is to provide a driving device and an image capturing module, in which the driving device increases a space for mounting a driving component (e.g., a coil) of the driving portion by reasonably arranging the driving component and a guide support structure, so that the driving force of the driving portion can be increased without adding any additional components, thereby simplifying the design scheme for increasing the driving force of the driving portion and avoiding complicating the structure of the driving portion.

Still another advantage of the present application is to provide a driving device and an image capturing module, in which not only the driving force of the driving portion can be improved, but also mutual interference between the components of the guide support structure and other components can be avoided by reasonably arranging the driving components of the driving portion and the guide support structure.

Still another advantage of the present application is to provide a driving apparatus and an image pickup module, in which the driving apparatus prevents an unexpected movement of a driven object during driving the movement of the driven object by arranging respective portions of an elastic member thereof in a specific pattern, so as to reduce a tilt tolerance of the driving apparatus and improve assembly accuracy of the image pickup module.

Other advantages and features of the application will become apparent from the following description, and may be realized by means of the instrumentalities and combinations particularly pointed out in the claims.

To achieve at least one of the above advantages, according to one aspect of the present application, there is provided a driving apparatus including:

a fixing part with a containing cavity;

an elastic member disposed in the housing chamber;

a movable part movably suspended in the accommodating cavity through the elastic member, wherein the movable part is suitable for installing an optical lens therein, and the optical lens is provided with an optical axis; and

A driving unit for driving the movable unit to move relative to the fixed unit;

a guide support structure formed between the movable portion and the fixed portion;

the driving part comprises at least one magnet arranged on the movable part and at least one first coil arranged on the fixed part and corresponding to the at least one magnet, wherein the at least one first coil extends on the fixed part along the direction set by the edge of the fixed part, and the extending direction of the guide supporting structure on the fixed part is consistent with the extending direction of the at least one first coil.

In the driving device according to the present application, the at least one first coil is located on the side of the fixing portion.

In the driving device according to the present application, the fixed portion includes an upper cover and a base that are fastened to each other to form the accommodating cavity, the movable portion includes an outer carrier and an inner carrier movably mounted to the outer carrier, the inner carrier is adapted to mount the optical lens therein, wherein the at least one first coil is disposed on the base, and the at least one magnet is disposed on the outer carrier, wherein the at least one first coil and the at least one magnet of the driving portion are adapted to drive the outer carrier to drive the inner carrier carrying the optical lens to move in a plane perpendicular to the optical axis for optical anti-shake.

In the driving device according to the present application, the driving part further includes a second coil disposed on the inner carrier and corresponding to the magnet, and the at least one magnet and the second coil of the driving part are adapted to drive the inner carrier to move relative to the outer carrier along a direction set by the optical axis for optical focusing.

In the driving device according to the present application, the base has a first side, a second side, a third side, and a fourth side which are rectangular and enclose each other, the first side and the third side extend along an X-axis direction set by an X-axis, and the second side and the fourth side extend along a Y-axis direction set by a Y-axis, wherein the at least one first coil includes four first coils which are respectively located at the first side, the second side, the third side, and the fourth side and extend along the first side, the second side, the third side, and the fourth side, respectively.

In the driving device according to the present application, the guide support structure includes a first guide support unit, a second guide support unit, a third guide support unit, and a fourth guide support unit; the first guide supporting unit comprises a first lower track concavely formed on a first side of the base, a first upper track concavely formed on the outer carrier and corresponding to the first lower track, and at least one first ball arranged between the first upper track and the first lower track; the second guide supporting unit comprises a second lower rail concavely formed on a second side of the base, a second upper rail concavely formed on the outer carrier and corresponding to the second lower rail, and at least one second ball arranged between the second upper rail and the second lower rail; the third guide supporting unit comprises a third lower track concavely formed on a third side of the base, a third upper track concavely formed on the outer carrier and corresponding to the third lower track, and at least one third ball arranged between the third upper track and the third lower track; the fourth guide supporting unit comprises a fourth lower rail concavely formed on a fourth side of the base, a fourth upper rail concavely formed on the outer carrier and corresponding to the fourth lower rail, and at least one fourth ball which is erected between the fourth upper rail and the fourth lower rail; the first coil comprises a first sub-coil, a second sub-coil, a third sub-coil and a fourth sub-coil, the extending direction of the first lower track is consistent with that of the first sub-coil, the extending direction of the second lower track is consistent with that of the second sub-coil, the extending direction of the third lower track is consistent with that of the third sub-coil, and the extending direction of the fourth lower track is consistent with that of the fourth sub-coil.

In the driving device according to the present application, the extending direction of the first upper rail is perpendicular to the extending direction of the first lower rail, the extending direction of the second lower rail is perpendicular to the extending direction of the second upper rail, the extending direction of the third lower rail is perpendicular to the extending direction of the third upper rail, and the extending direction of the fourth lower rail is perpendicular to the extending direction of the fourth upper rail.

In the driving device according to the present application, the extending direction of the first lower rail is perpendicular to the extending direction of the second lower rail, the extending direction of the second lower rail is perpendicular to the extending direction of the third lower rail, the extending direction of the third lower rail is perpendicular to the extending direction of the fourth lower rail, and the extending direction of the fourth lower rail is perpendicular to the extending direction of the first lower rail.

In the driving device according to the present application, the first lower rail, the second lower rail, the third lower rail, and the fourth lower rail are rotationally symmetrical with respect to the optical axis.

In the driving device according to the present application, the elastic member includes a first elastic member extending between the fixed portion and the movable portion, the first elastic member including a focusing elastic portion and an anti-shake elastic portion extending on a plane perpendicular to the optical axis, wherein the focusing elastic portion is disposed in a rotationally symmetrical fashion with respect to the optical axis, and the anti-shake elastic portion is disposed in an axially symmetrical fashion with respect to the optical axis.

In the driving device according to the present application, the focusing elastic portion extends between the inner carrier and the outer carrier, and the anti-shake elastic portion extends between the outer carrier and the fixing portion.

In the driving device according to the present application, the focusing elastic portion includes a first focusing elastic unit and a second focusing elastic unit rotationally symmetric with respect to the optical axis, wherein the first focusing elastic unit includes a first focusing elastic inner profile portion fixed to the inner carrier, a first focusing elastic outer profile portion fixed to the outer carrier, and a first focusing elastic deformation portion extending between the first focusing elastic inner profile portion and the first focusing elastic outer profile portion, and the second focusing elastic unit includes a second focusing elastic inner profile portion fixed to the inner carrier, a second focusing elastic outer profile portion fixed to the outer carrier, and a second focusing elastic deformation portion extending between the second focusing elastic inner profile portion and the second focusing elastic outer profile portion.

In the driving device according to the present application, the anti-shake elastic portion includes a first anti-shake elastic unit and a fourth anti-shake elastic unit symmetrically distributed with respect to the X axis, and a second anti-shake elastic unit and a third anti-shake elastic unit symmetrically distributed with respect to the X axis, wherein the first anti-shake elastic unit and the second anti-shake elastic unit are symmetrically distributed with respect to the Y axis, the third anti-shake elastic unit and the fourth anti-shake elastic unit are symmetrically distributed with respect to the Y axis, the first anti-shake elastic unit is connected to the first focusing elastic unit, and the third anti-shake elastic unit is connected to the second focusing elastic unit.

In the driving device according to the present application, the elastic member further includes a second elastic assembly extending between the inner carrier and the outer carrier, the first elastic assembly and the second elastic assembly being disposed opposite to each other on opposite sides of the movable portion, wherein the second elastic assembly includes a second elastic inner profile portion fixed to the inner carrier, a second elastic outer profile portion fixed to the outer carrier, and a second elastic deformation portion extending between the second elastic inner profile portion and the second elastic outer profile portion.

In the driving device according to the present application, the magnet and the second coil correspond to each other in a first direction, and the magnet and the first coil correspond to each other in a second direction, wherein the first direction is perpendicular to the second direction.

According to another aspect of the present application, there is also provided an image capturing module, including:

an optical lens;

a photosensitive assembly; and

the driving assembly as described above, wherein the optical lens is mounted in the driving device and is held on the optical path of the photosensitive assembly.

Further objects and advantages of the present application will become fully apparent from the following description and the accompanying drawings.

These and other objects, features and advantages of the present application will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing embodiments of the present application in more detail with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.

Fig. 1 illustrates a schematic diagram of an image capturing module according to an embodiment of the present application.

Fig. 2 illustrates a schematic diagram of a driving apparatus of the camera module according to an embodiment of the present application.

Fig. 3 illustrates an exploded view of the driving device according to an embodiment of the present application.

Fig. 4 illustrates another exploded schematic view of the driving device according to an embodiment of the application.

Fig. 5 illustrates a partial perspective view of the driving apparatus according to an embodiment of the present application.

Fig. 6 illustrates a schematic partial cross-sectional view of the driving apparatus according to an embodiment of the present application.

Fig. 7 illustrates another partial cross-sectional view of the driving apparatus according to an embodiment of the present application.

Fig. 8 illustrates another partial perspective view of the driving device according to an embodiment of the present application, showing a layout of the first elastic member.

Fig. 9 illustrates a further partial perspective view of the driving device according to an embodiment of the present application.

Fig. 10 illustrates a further partial perspective view of the driving device according to an embodiment of the present application.

Fig. 11 illustrates a partial perspective schematic view of the driving apparatus according to an embodiment of the present application.

Fig. 12 illustrates a partially disassembled schematic view of the driving apparatus according to an embodiment of the present application.

Fig. 13 illustrates a further partial perspective view of the driving device according to an embodiment of the present application.

Fig. 14 illustrates a further partial perspective view of the driving device according to an embodiment of the present application.

Detailed Description

Hereinafter, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.

Exemplary camera Module

Fig. 1 is a schematic view of an image capturing module according to an embodiment of the present application, and as shown in fig. 1, the image capturing module according to an embodiment of the present application is illustrated, and includes: a photosensitive assembly 10, an optical lens (not shown) and a driving assembly, wherein the optical lens is held on a photosensitive path of the photosensitive assembly 10 so that the photosensitive assembly 10 can receive light projected from the optical lens for imaging, and the driving assembly is used for driving a target object (the photosensitive chip 12 and/or the optical lens) to move so as to achieve optical focusing and/or optical anti-shake.

In the embodiment of the present application, the photosensitive assembly 10 includes a circuit board 11, a photosensitive chip 12 electrically connected to the circuit board 11, and a filter element 13 held on a photosensitive path of the photosensitive chip 12, wherein the circuit board 11 forms a mounting substrate of the photosensitive assembly 10. The wiring board 11 may be implemented as a printed circuit board (Printed Circuit Board, PCB), a software board, or a reinforced flexible circuit board (Flexible Printed Circuit, PFC). Also, in some examples, a reinforcing plate (not shown) may be further provided below the wiring board 11, for example, a steel sheet may be provided below the wiring board 11 to reinforce the strength of the wiring board 11 and improve the heat dissipation performance of the photosensitive assembly 10 by the steel sheet.

The wiring board 11 includes a wiring board main body, a connection tape, and a connector portion (wherein the connection tape and the connector portion are not shown in the drawing). The connection strap portion is connected between the circuit board body and the connector portion to enable electrical communication between the circuit board body and the connector portion.

The light sensing chip 12 includes a light sensing region for receiving imaging light to perform imaging and a non-light sensing region surrounding the light sensing region. The photosensitive chip 12 is electrically connected to the circuit board 11 through a pad of the photosensitive chip 12 located in the non-photosensitive area.

The specific embodiment of the light sensing chip 12 electrically connected to the circuit board 11 is not limited by the present application. For example, the photosensitive Chip 12 may be electrically connected to the circuit board body of the circuit board 11 by wire bonding (wire bonding), soldering, flip-Chip (FC), rewiring layer (RDL, redistribution Layer), or the like. In the embodiment of the present application, the surface of the circuit board 11 facing the optical lens is defined as the front surface of the circuit board 11, the surface opposite to the front surface of the circuit board 11 is the bottom surface or the back surface of the circuit board 11, and the photosensitive chip 12 may be fixed on the front surface of the circuit board 11 or may be fixed on the back surface of the circuit board 11.

Accordingly, in some embodiments of the present application, the photosensitive chip 12 is fixed to the front surface of the circuit board body through an adhesive medium. The circuit board body has a groove or a through hole (circuit board through hole) in a central region thereof, and the photosensitive chip 12 is fixedly mounted in the groove or the circuit board through hole of the circuit board body. That is, the photosensitive chip 12 is accommodated in the groove of the circuit board main body or the circuit board through hole, so as to reasonably utilize the height space occupied by the circuit board 11, reduce the influence of the thickness of the circuit board 11 on the thickness of the photosensitive assembly 10, and reduce the height of the camera module.

The filter element 13, which is held on the photosensitive path of the photosensitive chip 12, is used to filter the imaging light entering the photosensitive chip 12. In some embodiments of the present application, the photosensitive assembly 10 further includes a filter element holder 14 disposed on the circuit board 11, and the filter element 13 is mounted on the filter element holder 14 and corresponds to at least a portion of the photosensitive area of the photosensitive chip 12 so as to be held on the photosensitive path of the photosensitive chip 12. Specifically, the filter element 13 may be fixed to the filter element holder 14 by means of reverse adhesion, that is, the filter element 13 is mounted on a side of the filter element holder 14 away from the optical lens, and the filter element 13 may also be mounted on a side of the filter element holder 14 close to the optical lens.

The combination of the filter element support 14 and the circuit board 11 is not limited by the present application. In one embodiment of the present application, the filter element holder 14 is separately formed to have a structure independent from the circuit board 11, and the filter element holder 14 is attached to the circuit board 11 by an adhesive, and can be used to support other components. In another embodiment of the present application, the filter element support 14 and the circuit board 11 are integrally formed at a predetermined position of the circuit board body through a molding process. In yet another embodiment of the present application, the filter element holder 14 is mounted to the circuit board 11 by a molded base. Specifically, the molding base is integrally formed at a predetermined position of the circuit board body by a molding process, and the filter element holder 14 is fixed to the molding base in such a manner that the filter element holder 14 is mounted to the circuit board body.

In some embodiments of the present application, the photosensitive assembly 10 further includes an electronic component 15 electrically connected to the circuit board 11, and the molded base has a receiving cavity to encapsulate at least a portion of the circuit board 11 and the electronic component 15 in the receiving cavity, so as to reduce contamination of the photosensitive chip 12 by dust or other contaminants possibly carried by the circuit board 11 and/or the electronic component 15. In some embodiments of the present application, the molding base not only encapsulates at least a portion of the circuit board 11 and the electronic component 15 within the receiving cavity, but also encapsulates at least a portion of the non-photosensitive region of the photosensitive chip 12 within the receiving cavity.

In other examples of the present application, the specific embodiment in which the filter element 13 is held on the photosensitive path of the photosensitive chip 12 is not limited to the present application, for example, the filter element 13 may be implemented as a filter film and coated on a surface of a certain optical lens of the optical lens to perform a filtering effect.

In the embodiment of the present application, the photosensitive assembly 10 further includes an electrical connector (not shown) electrically connected to the circuit board 11, so as to electrically connect the camera module and an external device. Specifically, the electrical connector is connected to the connector portion to be electrically connected to the wiring board 11.

In an embodiment of the application, the optical lens includes a lens barrel and at least one optical lens mounted in the lens barrel. The optical lens is provided with an optical axis, and the optical lens is arranged along the direction set by the optical axis. Those of ordinary skill in the art will appreciate that the resolution of the optical lens is proportional to the number of optical lenses over a range, i.e., the higher the resolution, the greater the number of optical lenses. In a specific implementation, the optical lens may be implemented as a unitary lens, or a split lens, wherein when the optical lens is implemented as a unitary lens, the optical lens includes one barrel in which all the optical lenses are mounted; when the optical lens is implemented as a split optical lens, the optical lens is assembled from at least two lens units.

In an embodiment of the present application, the driving component is used to drive the optical lens and/or the photosensitive chip 12 to move, so as to implement optical focusing and/or optical anti-shake. Accordingly, in some embodiments of the present application, the driving assembly is provided with only a lens driving device, and the driving assembly drives the optical lens to move through the lens driving device to achieve optical focusing and/or optical anti-shake. In some embodiments of the present application, the driving assembly is provided with only a chip driving device, and the driving assembly drives the photosensitive chip 12 to move through the chip driving device to realize optical focusing and/or optical anti-shake. In some embodiments of the present application, the driving assembly is provided with both a lens driving device and a chip driving device, and the driving assembly drives the driven object corresponding to the lens driving device and the chip driving device to move to realize optical focusing and/or optical anti-shake, or drives the optical lens and the photosensitive chip 12 to move to realize optical focusing and/or optical anti-shake through the lens driving device and the chip driving device respectively.

In the embodiment of the application, the implementation of optical focusing and optical anti-shake is further described by establishing a space coordinate system. The direction set by the optical axis is defined as a Z-axis direction (i.e., a direction set by the Z-axis), the first preset direction in the plane perpendicular to the optical axis is defined as an X-axis direction (i.e., a direction set by the X-axis), and the second preset direction in the plane perpendicular to the optical axis is defined as a Y-axis direction (i.e., a direction set by the Y-axis). In the embodiment of the application, the X-axis direction and the Y-axis direction are mutually perpendicular, and the Z-axis direction is perpendicular to the plane in which the X-axis direction and the Y-axis direction are located, in other words, the X-axis, the Y-axis and the Z-axis form a three-dimensional rectangular coordinate system.

In the embodiment of the application, the driving component can drive the optical lens and/or the photosensitive component 10 to move along the Z-axis direction to realize the optical focusing function, and drive the optical lens and/or the photosensitive component 10 to move along the X-axis direction and the Y-axis direction to realize the optical anti-shake function. The driving component can also drive the optical lens and/or the photosensitive component 10 to rotate around the Z-axis direction to realize the optical focusing function, and drive the optical lens and/or the photosensitive component 10 to rotate around the X-axis and around the Y-axis direction to realize the optical anti-shake function.

For convenience of description and understanding, the structure and method for realizing optical focusing and optical anti-shake will be described below by taking the lens driving device as an example, and the driving device 20 mentioned below is referred to as a lens driving device in particular.

As shown in fig. 2 to 4, in the embodiment of the present application, the driving device 20 includes a fixed portion 21 having a receiving cavity 201, a movable portion 22 suspended in the receiving cavity 201, and a driving portion 23 for driving the movable portion 22 to move relative to the fixed portion 21. The movable part 22 is adapted to mount an optical lens therein, and in the process of driving the movable part 22 to move relative to the fixed part 21 by the driving part 23, the optical lens mounted on the movable part 22 is driven to move along the Z-axis direction or along a plane perpendicular to the Z-axis, so as to realize the optical focusing and optical anti-shake functions of the camera module.

In the embodiment of the present application, as shown in fig. 3 and 4, the fixing portion 21 includes an upper cover 212 and a base 211 that are fastened to each other to form the accommodating cavity 201, so as to accommodate the movable portion 22 and the driving portion 23 therein, so that not only the respective elements in the driving device 20 can be protected from being damaged due to impact, but also dust, dirt or stray light can be prevented from entering the interior of the driving device 20.

The upper cover 212 and the base 211 are provided with openings corresponding to the optical lens, so that light reflected by an object can enter the optical lens through the opening provided in the upper cover 212 and reach the photosensitive assembly 10.

As shown in fig. 3 to 5, the base 211 includes a base body 2111 and a base support 2112 provided to the base body 2111. The base support 2112 extends integrally upward along a peripheral area of the base body 2111 such that the base support 2112 forms a mounting surface with a height drop with a surface of the base body 2111. The number of the base struts 2112 is at least two, and it is preferable that the base struts 2112 are provided opposite to the base main body 2111 so as to be symmetrical about a longitudinal center axis of the base main body 2111 as a symmetry axis. In one specific example of the present application, the base struts 2112 are located at four corners of the base main body 2111, integrally extend upward along four corner regions of the base main body 2111, and are symmetrically distributed.

In the embodiment of the present application, the specific forming manner of the base support 2112 is not limited to the present application, and the base support 2112 may be integrally formed with the base main body 2111 through an injection molding process, or may be further formed on the formed base main body 2111 through an injection molding process.

In the embodiment of the present application, the movable portion 22 is disposed in the fixed portion 21, and is movable in the housing cavity 201 of the fixed portion 21 by the driving portion 23. The movable portion 22 includes an outer carrier 222 and an inner carrier 221 movably mounted to the outer carrier 222, the inner carrier 221 being adapted to mount the optical lens therein, in other words, the optical lens is adapted to be mounted to the inner carrier 221. In the embodiment of the present application, the inner carrier 221 may be driven to move relative to the outer carrier 222 alone, or may be driven by the outer carrier 222 to move together with the outer carrier 222. Further, the outer carrier 222 or the inner carrier 221 is driven to move to drive the optical lens to move, so as to realize the optical focusing or the optical anti-shake function.

Specifically, in other embodiments of the present application, when the outer carrier 222 is kept stationary and the inner carrier 221 is driven to move relative to the outer carrier 222, the inner carrier 221 can drive the optical lens to move in a direction set along the optical axis, so as to implement an optical focusing function of the camera module; when the outer carrier 222 is driven to move relative to the base 211, the outer carrier 222 can drive the inner carrier 221 and the optical lens to move in a plane perpendicular to the optical axis, so as to realize the optical anti-shake function of the camera module. In other embodiments of the present application, when the outer carrier 222 is kept stationary and the inner carrier 221 is driven to move relative to the outer carrier 222, the inner carrier 221 can drive the optical lens to move in a plane perpendicular to the optical axis, so as to implement an optical anti-shake function of the camera module; when the outer carrier 222 is driven to move relative to the base 211, the outer carrier 222 can drive the inner carrier 221 and the optical lens to move along the direction set by the optical axis, so as to realize the optical focusing function of the camera module.

It should be noted that, in some embodiments of the present application, the lens barrel of the optical lens and the inner carrier 221 have an integrated structure, that is, the inner carrier 221 has the function of the lens barrel, and is used for accommodating a plurality of optical lenses, and can also be used as a carrier to drive the optical lenses to move. Further, the integral barrel and inner carrier 221 structure may reduce the overall lateral dimension of the drive device 20, thereby reducing the lateral dimension of the camera module.

As shown in fig. 2 to 6, in the embodiment of the present application, the driving device 20 further includes an elastic member 24 disposed in the accommodating cavity 201 of the fixed portion 21, and adapted to drive the movable portion 22 to return to the original position (i.e. the position when not driven by the driving portion 23, or the position before being driven by the driving portion 23), and the movable portion 22 is movably suspended in the accommodating cavity 201 by the elastic member 24.

The elastic member 24 includes a first elastic element 241 and a second elastic element 242 extending between the inner carrier 221 and the outer carrier 222, and the first elastic element 241 and the second elastic element 242 are oppositely disposed at opposite sides of the movable portion 22, as shown in fig. 5, 7 and 9. The first elastic component 241 is located at the light incident side of the optical lens, and the second elastic component 242 is located at the light emergent side of the optical lens, so as to suspend the optical lens and the movable portion 22 in the accommodating cavity 201 of the fixed portion 21 in a resettable manner.

Specifically, the first elastic member 241 is integrally formed in a sheet-like structure, and the first elastic member 241 includes a focusing elastic portion 2411 and an anti-shake elastic portion 2412, wherein the focusing elastic portion 2411 and the anti-shake elastic portion 2412 extend in a plane perpendicular to the optical axis.

In some embodiments of the present application, optical anti-shake is achieved by driving the inner carrier 221 to move relative to the outer carrier 222, and optical focusing is achieved by driving the outer carrier 222 to move relative to the fixing portion 21. Accordingly, the focusing elastic part 2411 is disposed at the outer circumference of the anti-shake elastic part 2412, the anti-shake elastic part 2412 extends between the inner carrier 221 and the outer carrier 222, and the focusing elastic part 2411 extends between the outer carrier 222 and the base 211 of the fixing part 21. The driving part 23 is adapted to drive the inner carrier 221 to move relative to the outer carrier 222 in a plane perpendicular to the optical axis for optical anti-shake, and the driving part 23 is adapted to drive the outer carrier 222 to drive the inner carrier 221 carrying the optical lens to move along a direction set by the optical axis for optical focusing.

In other embodiments of the present application, optical focusing is achieved by driving the inner carrier 221 to move relative to the outer carrier 222, and optical anti-shake is achieved by driving the outer carrier 222 to move relative to the fixing portion 21. Accordingly, the anti-shake resilient portion 2412 is disposed at the outer periphery of the focusing resilient portion 2411, the focusing resilient portion 2411 extends between the inner carrier 221 and the outer carrier 222, and the anti-shake resilient portion 2412 extends between the outer carrier 222 and the base 211 of the fixing portion 21. The driving part 23 is adapted to drive the inner carrier 221 to move along the direction set by the optical axis relative to the outer carrier 222 for optical focusing, and the driving part 23 is adapted to drive the outer carrier 222 to drive the inner carrier 221 carrying the optical lens to move in a plane perpendicular to the optical axis for optical anti-shake.

When the driving part 23 drives the inner carrier 221 to move in a direction set by the optical axis (i.e., the Z-axis direction), the focusing elastic part 2411 is deformed to accumulate an elastic force; when the driving part 23 stops driving, the elastic force of the focusing elastic part 2411 is released, driving the inner carrier 221 to return to the original position. When the driving part 23 drives the outer carrier 222 to move in the X-axis direction and the Y-axis direction in a plane perpendicular to the optical axis, the anti-shake elastic portion 2412 is deformed to accumulate elastic force; when the driving part 23 stops driving, the elastic force of the anti-shake elastic part 2412 is released, driving the outer carrier 222 to return to the original position.

It should be noted that, in order to avoid collision with the outer carrier 222 or the fixing portion 21 during the process of moving the optical lens by the inner carrier 221, and further to cause deformation or damage of the optical lens, the imaging quality is reduced, in the embodiment of the present application, first protrusions for collision avoidance are respectively disposed on the top surface and the bottom surface of the inner carrier 221. Preferably, the material of the first protrusion is a material having an elastic modulus smaller than that of the inner carrier 221, for example, silica gel. The first protrusion may be integrally formed on the inner carrier 221 by injection molding, or may be fixed on the inner carrier 221 by adhesive, which is not limited by the present application.

Likewise, second protrusions for collision prevention may be provided on the top and bottom surfaces of the outer carrier 222, and the surfaces of the second protrusions protrude from the surfaces of the elastic members 24 to prevent the elastic members 24 from colliding with the base 211 or the upper cover 212 of the fixing portion 21 during the movement of the outer carrier 222, resulting in damage to the elastic members 24.

The focusing elastic portion 2411 has a focusing elastic inner profile portion fixed to the inner carrier 221, a focusing elastic outer profile portion fixed to the outer carrier 222, and a focusing elastic deformation portion extending between the focusing elastic inner profile portion and the focusing elastic outer profile portion.

Accordingly, in a specific example of the present application, the top surfaces of the inner carrier 221 and the outer carrier 222 are respectively provided with an elastic mechanism positioning position, the focusing elastic inner profile is fixedly connected to the elastic mechanism positioning position of the top surface of the inner carrier 221, the focusing elastic outer profile is fixedly connected to the elastic mechanism positioning position of the top surface of the outer carrier 222, and the focusing elastic deformation portion extends from the focusing elastic inner profile to the focusing elastic outer profile, so that the inner carrier 221 is suspended in the outer carrier 222 by the focusing elastic deformation portion, a certain movement space is reserved for the inner carrier 221 by the deformation of the focusing elastic deformation portion, and a certain restoring force is provided for the inner carrier 221.

The focusing elastic deformation part extends from the focusing elastic outline part to the focusing elastic inner outline part in a bending way so as to reserve enough space for the movement of the inner carrier 221, thereby not only providing guarantee for the large movement stroke of the inner carrier 221, but also reducing the driving resistance of the inner carrier 221 and improving the optical focusing sensitivity of the camera module. It is understood that the longer the length of the focusing elastic deformation portion is, the more the focusing elastic deformation portion is bent, the smaller the deformation of the focusing elastic deformation portion after being deformed is, and the more easily the focusing elastic deformation portion is reset after being stretched.

In particular, in the embodiment of the present application, the focusing elastic parts 2411 are arranged in a rotationally symmetrical pattern with respect to the optical axis. This is due to: the K values (elastic coefficients) of the axially symmetric elastic elements in the X-axis direction and the Y-axis direction are greatly different, which results in a relatively large displacement of the inner carrier 221 in one of the X-axis direction and the Y-axis direction, and the rotationally symmetric elastic elements can exert a suppressing effect on the displacement in the one direction. Further, since the rotationally symmetrical focus elastic portions 2411 have the same elastic coefficient (K value) in the X-axis direction and the Y-axis direction, the rotationally symmetrical focus elastic portions 2411 can suppress the movement of the inner carrier 221 about the Z-axis to some extent when the inner carrier 221 moves in the Z-axis direction. Further, the K values of the focusing elastic parts 2411 in the X-axis direction and the Y-axis direction are large, and the amplitude of rotation about the Z-axis generated by the inner carrier 221 can be made smaller. It can be appreciated that the rotationally symmetrical layout pattern makes the focusing elastic portion 2411 further improve the flatness of the first elastic element 241, so as to reduce the inclination tolerance of the driving device 20 and improve the assembly precision of the camera module.

In the embodiment of the present application, the focusing elastic portion 2411 includes at least two focusing elastic units distributed in a rotationally symmetrical manner with respect to the optical axis, and at least two focusing elastic units are independent from each other, i.e., the focusing elastic portion 2411 is a split structure, and the number of the focusing elastic units is not limited by the present application.

In a specific example of the present application, the focus elastic part 2411 includes a first focus elastic unit 100 and a second focus elastic unit 200, and the first focus elastic unit 100 and the second focus elastic unit 200 are rotationally symmetrical with respect to the optical axis, as shown in fig. 8. The first focusing elastic unit 100 includes a first focusing elastic inner contour 110 fixed to the inner carrier 221, a first focusing elastic outer contour 130 fixed to the outer carrier 222, and a first focusing elastic deformation 120 extending between the first focusing elastic inner contour 110 and the first focusing elastic outer contour 130, and the second focusing elastic unit 200 includes a second focusing elastic inner contour 210 fixed to the inner carrier 221, a second focusing elastic outer contour 230 fixed to the outer carrier 222, and a second focusing elastic deformation 220 extending between the second focusing elastic inner contour 210 and the second focusing elastic outer contour 230.

In a specific example of the present application, the first focusing elastic inner profile 110 and the second focusing elastic inner profile 210 form a hollow ring structure, so that a middle region of the ring structure can correspond to an optical lens when the first focusing elastic unit 100 is fixedly coupled to the inner carrier 221. The first focusing elastic contour 130 and the second focusing elastic contour 230 are disposed along opposite sides of the driving device 20, respectively. The first focusing elastic deformation 120 and/or the second focusing elastic deformation 220 includes a plurality of bending sections extending along an X-axis direction set by an X-axis or a Y-axis direction set by a Y-axis to provide a certain restoring force for the movement of the inner carrier 221, wherein each bending section includes at least two straight sections and a bending section connecting the two straight sections.

It should be noted that the focusing elastic deformation portion may be, but not limited to, at least two wires connected between the focusing elastic outer profile portion and the focusing elastic inner profile portion, and when the driving portion 23 generates a driving force to drive the inner carrier 221 to displace, the focusing elastic deformation portion is driven to generate a reaction damping force balanced with the driving force, so that the inner carrier 221 is stably maintained at a certain position along the optical axis, so as to implement the optical focusing function of the camera module.

In an embodiment of the present application, the anti-shake elastic portion 2412 has an anti-shake elastic inner profile portion, an anti-shake elastic outer profile portion, and an anti-shake elastic deformation portion extending between the anti-shake elastic inner profile portion and the anti-shake elastic outer profile portion, wherein the anti-shake elastic inner profile portion is fixed to the outer carrier 222, and the anti-shake elastic outer profile portion is fixed to the base 211 of the fixing portion 21.

Accordingly, in a specific example of the present application, the top surface of the base post 2112 of the base 211 is provided with an elastic mechanism positioning position, the anti-shake elastic inner profile portion is fixedly connected to the elastic mechanism positioning position of the top surface of the outer carrier 222, the anti-shake elastic outer profile portion is fixedly connected to the elastic mechanism positioning position of the top surface of the base post 2112, and the anti-shake elastic deformation portion extends from the anti-shake elastic inner profile portion to the anti-shake elastic outer profile portion, so that the outer carrier 222 is suspended on the base 211 through the anti-shake elastic deformation portion, a certain movement space is reserved for the outer carrier 222 through the deformation of the anti-shake elastic deformation portion, and a certain restoring force is provided for the outer carrier 222.

The anti-shake elastic deformation portion extends from the anti-shake elastic outer profile portion to the anti-shake elastic inner profile portion in a bending manner, so as to reserve enough space for the movement of the outer carrier 222, not only can provide a guarantee for a large movement stroke of the outer carrier 222, but also can reduce driving resistance of the inner carrier 221 and improve optical anti-shake sensitivity of the camera module. It can be understood that the longer the length of the anti-shake elastic deformation portion is, the more the anti-shake elastic deformation portion is bent, the smaller the deformation of the anti-shake elastic deformation portion after being deformed is, and the anti-shake elastic deformation portion is easier to reset after being stretched.

Specifically, the anti-shake elastic deformation portion includes a plurality of interconnected bending segments extending along the X direction and a plurality of interconnected bending segments extending along the Y direction, wherein the plurality of interconnected bending segments extending along the X direction are interconnected with the plurality of interconnected bending segments extending along the Y direction, so that corresponding restoring forces can be generated in the X direction and the Y direction after the anti-shake elastic deformation portion is stretched in the X direction and the Y direction, so that the outer carrier 222 returns to the original position (i.e., the position of the outer carrier 222 before being driven to move by the driving portion 23) under the action of the anti-shake elastic unit.

In a specific example of the present application, one ends of a plurality of interconnected bending sections extending in the X direction are connected to the anti-shake elastic inner profile portion, and one ends of a plurality of interconnected bending sections extending in the Y direction are connected to the anti-shake elastic outer profile portion. In another specific example of the present application, one ends of the plurality of interconnected bending sections extending in the X direction are connected to the anti-shake elastic outer profile portion, and one ends of the plurality of interconnected bending sections extending in the Y direction are connected to the anti-shake elastic inner profile portion.

In particular, in the embodiment of the present application, the anti-shake elastic portion 2412 is disposed in an axisymmetric pattern with respect to the optical axis. This is due to: the rotationally symmetrical design of the spring element has a smaller K-value in the direction of rotation along the Z-axis direction, which will result in a more easily generated rotational movement about the Z-axis direction during translational movement along the X-axis direction and the Y-axis direction by the outer carrier 222. While the axially symmetric anti-shake resilient portion 2412 effectively ameliorates the above-described problem, the axially symmetric anti-shake resilient portion 2412 is capable of suppressing the movement of the outer carrier 222 about the Z-axis rotation when the outer carrier 222 moves in the X-axis direction and the Y-axis direction. It can be appreciated that the axisymmetric layout pattern may further improve the flatness of the first elastic component 241 by the anti-shake elastic portion 2412, so as to reduce the tilt tolerance of the driving device 20 and improve the assembly accuracy of the camera module.

In the embodiment of the present application, the anti-shake elastic portion 2412 includes at least two anti-shake elastic units distributed in an axisymmetric pattern with respect to the optical axis, and at least two of the anti-shake elastic units are independent of each other, that is, the anti-shake elastic portion 2412 is a split structure, and the number of the anti-shake elastic units is not limited by the present application.

In one specific example of the present application, the number of the anti-shake elastic units is 4, and accordingly, the anti-shake elastic portion 2412 includes a first anti-shake elastic unit 300, a second anti-shake elastic unit 400, a third anti-shake elastic unit 500, and a fourth anti-shake elastic unit 600, which are sequentially disposed in a clockwise direction, as shown in fig. 8. The first anti-shake elastic unit 300 and the fourth anti-shake elastic unit 600 are symmetrically distributed relative to the X axis, the second anti-shake elastic unit 400 and the third anti-shake elastic unit 500 are symmetrically distributed relative to the X axis, the first anti-shake elastic unit 300 and the second anti-shake elastic unit 400 are symmetrically distributed relative to the Y axis, the third anti-shake elastic unit 500 and the fourth anti-shake elastic unit 600 are symmetrically distributed relative to the Y axis, and the first anti-shake elastic unit 300, the second anti-shake elastic unit 400, the third anti-shake elastic unit 500 and the fourth anti-shake elastic unit 600 are symmetrically distributed in an axisymmetric split manner.

The first anti-shake elastic unit 300, the second anti-shake elastic unit 400, the third anti-shake elastic unit 500, and the fourth anti-shake elastic unit 600 are located at four corners of the driving device 20, so that the outer carrier 222 receives more symmetrical force under the action of the four anti-shake elastic units, and the outer carrier 222 can be stably suspended on the base 211.

More specifically, the first anti-shake elastic unit 300 includes a first anti-shake elastic inner profile portion 310 fixed to the outer carrier 222, a first anti-shake elastic outer profile portion 330 fixed to the base 211, and a first anti-shake elastic deformation portion 320 integrally connecting the first anti-shake elastic inner profile portion 310 and the first anti-shake elastic outer profile portion 330; the second anti-shake elastic unit 400 includes a second anti-shake elastic inner profile portion 410 fixed to the outer carrier 222, a second anti-shake elastic outer profile portion 430 fixed to the base 211, and a second anti-shake elastic deformation portion 420 integrally connecting the second anti-shake elastic inner profile portion 410 and the second anti-shake elastic outer profile portion 430; the third anti-shake elastic unit 500 includes a third anti-shake elastic inner profile portion 510 fixed to the outer carrier 222, a third anti-shake elastic outer profile portion 530 fixed to the base 211, and a third anti-shake elastic deformation portion 520 integrally connecting the third anti-shake elastic inner profile portion 510 and the third anti-shake elastic outer profile portion 530; the fourth anti-shake elastic unit 600 includes a fourth anti-shake elastic inner profile portion 610 fixed to the outer carrier 222, a fourth anti-shake elastic outer profile portion 630 fixed to the base 211, and a fourth anti-shake elastic deformation portion 620 integrally connecting the fourth anti-shake elastic inner profile portion 610 and the fourth anti-shake elastic outer profile portion 630, as shown in fig. 8.

It should be noted that, the first focusing elastic outline portion 130 and the second focusing elastic outline portion 230 of the two focusing elastic units are respectively disposed along the X-axis direction or the Y-axis direction of the opposite edges of the driving device 20, and the arrangement manner makes the focusing elastic portion 2411 and the anti-shake elastic portion 2412 fully utilize the spatial position of the lens driving device, and interference between the focusing elastic portion 2411 and the anti-shake elastic portion 2412 can be avoided, thereby affecting the driving effect.

In summary, the first elastic component 241 includes the focusing elastic portion 2411 and the anti-shake elastic portion 2412, wherein the focusing elastic portion 2411 is disposed in a rotationally symmetrical manner about the Z-axis, and the anti-shake elastic portion 2412 is disposed in an axially symmetrical manner with respect to the X-axis and the Y-axis. In this way, unintended movement of the driven object during driving of the movement of the driven object is avoided, specifically, on the one hand, when the driving section 23 drives the inner carrier 221 to move in the Z-axis direction for optical focusing, the focusing elastic section 2411 can suppress the movement of the inner carrier 221 in translation in the X-axis direction and the Y-axis direction, and can also suppress the movement of the inner carrier 221 in rotation in the Z-axis direction; on the other hand, when the driving part 23 drives the outer carrier 222 to move in the X-axis direction and the Y-axis direction to perform optical anti-shake, the anti-shake elastic part 2412 may restrain the outer carrier 222 from generating a movement to rotate around the Z-axis direction.

It should be noted that in some embodiments of the present application, the focusing elastic portion 2411 and the anti-shake elastic portion 2412 are completely separated to avoid interference between the focusing elastic portion 2411 and the anti-shake elastic portion 2412, thereby affecting the driving effect. In other embodiments of the present application, the focusing elastic part 2411 and at least a portion of the anti-shake elastic part 2412 are connected to each other, so that on one hand, the installation of the driving device 20 is simplified, and on the other hand, the flatness of the first elastic component 241 is improved, so as to reduce the tilt tolerance of the driving device 20 and improve the assembly accuracy of the camera module.

Accordingly, in some embodiments of the present application, the first elastic member 241 further includes an elastic connection portion 2413 connecting the focusing elastic portion 2411 and the anti-shake elastic portion 2412, one end of the elastic connection portion 2413 is connected to the focusing elastic portion 2411, and the other end of the elastic connection portion 2413 is connected to the anti-shake elastic portion 2412, as shown in fig. 8. The elastic connection portion 2413 includes a plurality of bending sections along the X-axis direction or the Y-axis direction, and the extending directions of the bending sections of the elastic connection portion 2413 are perpendicular to the extending directions of the bending sections of the focusing elastic deformation portion adjacent thereto. In a specific example of the present application, when the plurality of bending sections of the elastic connection portion 2413 extend along the X-axis direction, the bending sections of the focusing elastic deformation portion adjacent thereto extend along the Y-axis direction, and this arrangement may provide more extension space for the bending sections of the elastic connection portion 2413 and the focusing elastic deformation portion, so that the elastic connection portion 2413 and the focusing elastic deformation portion can provide more bending sections, and this arrangement may also avoid interference between the elastic connection portion 2413 and the focusing elastic deformation portion.

In some embodiments of the present application, the two focusing elastic units of the focusing elastic part 2411 and at least two of the anti-shake elastic units of the anti-shake elastic part 2412 are connected to each other, the elastic connection part 2413 includes a first elastic connection unit 700 and a second elastic connection unit 800, and the first elastic connection unit 700 and the second elastic connection unit 800 are rotationally symmetrically disposed with respect to the Z axis.

In a specific example of the present application, the first anti-shake elastic unit 300 is connected to the first focusing elastic unit 100, the third anti-shake elastic unit 500 is connected to the second focusing elastic unit 200, the first elastic connection unit 700 is disposed between the first anti-shake elastic unit 300 and the first focusing elastic unit 100, and the second elastic connection unit 800 is disposed between the third anti-shake elastic unit 500 and the second focusing elastic unit 200.

In this specific example, one end of the first elastic connection unit 700 is connected to the first anti-shake elastic inner profile portion 310, and the other end of the first elastic connection unit 700 is connected to the first focusing elastic inner profile portion 110; one end of the second elastic connection unit 800 is connected to the second anti-shake elastic inner profile portion 410, and the other end of the second elastic connection unit 800 is connected to the second focusing elastic inner profile portion 210. Through the first elastic connection unit 700 and the second elastic connection unit 800, the two anti-shake elastic units and the two focusing elastic units that are disposed at opposite angles in the anti-shake elastic units are connected with each other, and this arrangement mode not only can simplify the installation of the first elastic component 241, but also can endow the circuit of the first elastic component 241 with a conducting function, so that the circuit of the driving device 20 is simpler to conduct.

In another specific example of the present application, the elastic connection part 2413 further includes a third elastic connection unit and a fourth elastic connection unit, which are rotationally symmetrically disposed with respect to the Z-axis. The third elastic connection unit is connected between the first focusing elastic unit 100 and the second anti-shake elastic unit 400, and the fourth elastic connection unit is connected between the second focusing elastic unit 200 and the fourth anti-shake elastic unit 600.

In a specific example of the present application, one end of the third elastic connection unit is connected to the second anti-shake elastic inner profile portion 410, and the other end of the third elastic connection unit is connected to the first focusing elastic inner profile portion 110; one end of the fourth elastic connection unit is connected to the fourth anti-shake elastic inner profile portion 610, and the other end of the fourth elastic connection unit is connected to the second focusing elastic inner profile portion 210. This arrangement divides the first elastic element 241 into two parts, so that the first elastic element 241 maintains a good consistency, and the entire plane of the first elastic element 241 can be mounted in the lens driving device with a small tilt tolerance.

It should be noted that, in the embodiment of the present application, the focusing elastic inner profile is fixedly disposed on the top surface of the inner carrier 221 by bonding or hot riveting, and the focusing elastic outer profile is fixedly disposed on the top surface of the outer carrier 222 by bonding or hot riveting; the anti-shake elastic inner profile portion is fixedly arranged on the top surface of the outer carrier 222 in a bonding or hot riveting mode, and the anti-shake elastic outer profile portion is fixedly arranged on the top surface of the base support 2112 in a bonding or hot riveting mode. The focusing elastic inner profile part, the focusing elastic outer profile part, the anti-shake elastic inner profile part and the top surfaces of the elastic mechanism setting positions corresponding to the anti-shake elastic outer profile part are positioned on the same plane, so that the first elastic component 241 can be arranged on a flat installation plane.

It should be noted that, in the embodiment of the present application, the focusing elastic portion 2411 and the anti-shake elastic portion 2412 of the first elastic element 241 are elastic pieces, and the anti-shake elastic portion 2412 implemented as elastic pieces replaces the conventional suspension wires to realize the anti-shake function of the optical lens, and the anti-shake elastic portion 2412 can generate a force for resetting the object to be acted on, so as to ensure that the outer carrier 222 and the base 211 maintain a relatively stable state.

The anti-shake elastic portion 2412 is disposed as a part of the first elastic element 241 on the top of the outer carrier 222 (or the inner carrier 221) and the base 211, extends between the outer carrier 222 and the base 211, and is connected to the outer carrier 222 and the base 211, so that the driving device 20 can be assembled sequentially along the optical axis direction during the assembly process, and the assembly mode of the driving device 20 is simpler and the cost is saved; but also reduces assembly tolerances of the drive device 20 during assembly, resulting in a higher accuracy of the drive device 20.

In the embodiment of the present application, the second elastic member 242 is in a sheet-like structure, and the second elastic member 242 includes a second elastic inner profile 2421 fixed to the inner carrier 221, a second elastic outer profile 2423 fixed to the outer carrier 222, and a second elastic deformation portion 2422 extending between the second elastic inner profile 2421 and the second elastic outer profile 2423, as shown in fig. 9. The bottom surfaces of the inner carrier 221 and the outer carrier 222 are provided with elastic mechanism positioning positions, the second elastic profile 2423 is fixedly connected to the elastic mechanism positioning position of the bottom surface of the outer carrier 222, and the second elastic inner profile 2421 is fixedly connected to the elastic mechanism positioning position of the bottom surface of the inner carrier 221, so that the inner carrier 221 is clamped between the focusing elastic portion 2411 of the first elastic component 241 and the second elastic component 242, and the inner carrier 221 is suspended in the outer carrier 222.

Specifically, the second elastic outer profile 2423 and the second elastic inner profile 2421 of the second elastic component 242 may be fixed to the outer carrier 222 and the inner carrier 221 by, but not limited to, means such as bonding, heat staking, and the like. The second elastic inner profile 2421 forms a hollow ring structure, and the second elastic outer profile 2423 is disposed at four corners of the outer carrier 222 and is connected to the second elastic inner profile 2421 through the second elastic deformation portion 2422. In one specific example of the present application, the second elastic member 242 is disposed in a rotationally symmetrical fashion around the optical axis.

It should be noted that, in the embodiment of the present application, the first elastic component 241 and the second elastic component 242 of the elastic member 24 are fixedly connected to the top surface and the bottom surface of the inner carrier 221 and the outer carrier 222, respectively, so as to support and limit the movement of the inner carrier 221 and the outer carrier 222, which not only helps to improve the structural stability of the driving device 20, but also enables the inner carrier 221 and the outer carrier 222 to move within a certain range of travel.

It should also be noted that, in a specific example of the present application, the first elastic member 241 has a split structure, and the second elastic member 242 has a unitary structure, so that when the second elastic member 242 is mounted on the outer carrier 222, the second elastic member 242 can maintain good consistency all the time, so that the entire plane of the second elastic member 242 generates a small mounting tolerance, and the first elastic member 241 is used to implement the circuit. In another specific example of the present application, the first elastic component 241 and the second elastic component 242 are both configured as a split structure, so that the first elastic component 241 and the second elastic component 242 can be used for conducting a circuit, and the electrical connection manner of the driving device 20 is simplified.

In the embodiment of the present application, the driving part 23 may drive the inner carrier 221 to move alone or drive the inner carrier 221 and the outer carrier 222 to move together. The driving part 23 includes at least one magnet 233, at least one first coil 231, and a second coil 232, as shown in fig. 6. In a specific example of the present application, the magnet 233 is disposed on the outer carrier 222, the first coil 231 is disposed on the fixing portion 21 and corresponds to the magnet 233, and the second coil 232 is disposed on the inner carrier 221 and corresponds to the magnet 233.

The second coil 232 is adapted to drive the inner carrier 221 to move relative to the outer carrier 222 along a direction set by the optical axis for optical focusing. Specifically, the magnet 233 and the second coil 232 correspond to each other in the first direction, and the interaction between the second coil 232 and the magnet 233 generates electromagnetic force for driving the inner carrier 221 to move along the direction set by the optical axis, so as to implement an optical focusing function.

The first coil 231 is adapted to drive the outer carrier 222 to move the inner carrier 221 carrying the optical lens in a plane perpendicular to the optical axis for optical anti-shake. Specifically, as shown in fig. 3 and 10, the first coil 231 is disposed on the base 211 of the fixing portion 21, the magnet 233 and the first coil 231 correspond to each other in a second direction, wherein the first direction is perpendicular to the second direction, and the first coil 231 interacts with the magnet 233 to generate electromagnetic force for driving the outer carrier 222 to move in a plane perpendicular to the optical axis, so as to implement an optical anti-shake function.

It should be noted that, in the embodiment of the present application, the driving device increases the installation space of the driving component mainly by reasonably arranging the driving component (for example, the first coil 231) of the driving portion 23 and the guiding support structure 25 that plays a role of supporting and guiding as described below, so that the driving force of the driving portion 23 can be increased without adding any component, so as to simplify the design scheme for increasing the driving force of the driving portion 23, and avoid complicating the structure of the driving portion 23.

In the embodiment of the present application, the first coil 231 extends on the fixing portion 21 along the direction set by the edge of the fixing portion 21, and the extending direction of the guiding support structure 25 on the fixing portion is consistent with the extending direction of the first coil 231, which can provide a larger installation space for the first coil 231, so that the first coil 231 can be designed to be larger as much as possible to generate a larger driving force during the interaction of the first coil 231 and the magnet 233.

In a specific example of the present application, the first coil 231 is located on the side of the fixing portion 21. Specifically, the first coil 231 is disposed on the base 211, and the base 211 has a first side 202, a second side 203, a third side 204, and a fourth side 205 that are mutually enclosed into a rectangular shape, as shown in fig. 10. The first side 202 and the third side 204 extend along an X-axis direction set by an X-axis, and the second side 203 and the fourth side 205 extend along a Y-axis direction set by a Y-axis.

The number of the first coils 231 is at least two, and the first coils 231 and the magnets 233 interact to generate driving forces along the X-axis direction and the Y-axis direction, so as to drive the outer carrier 222 to move along the X-axis direction and the Y-axis direction. In a specific example of the present application, the number of the first coils 231 is four, the four first coils 231 are disposed opposite to the four magnets 233, and the four first coils 231 are disposed on the four sides of the base body 2111.

Accordingly, the at least one first coil 231 includes four first coils 231, and the four first coils 231 are respectively located on the first side 202, the second side 203, the third side 204 and the fourth side 205 and respectively extend along the first side 202, the second side 203, the third side 204 and the fourth side 205.

The second coil 232 is disposed on the outer side wall of the inner carrier 221. The specific structure and formation of the second coil 232 are not limited to the present application, and in one specific example of the present application, the second coil 232 is wound around the outer sidewall of the inner carrier 221 in multiple turns and layers; in another specific example of the present application, the second coil 232 is prefabricated as an air-core planar coil, and the second coil 232 may be flatly attached to the outer sidewall of the inner carrier 221.

It should be noted that, in the embodiment of the present application, as shown in fig. 14, the outer side wall of the inner carrier 221 is provided with a columnar protruding portion 2221, and the columnar protruding portion 2221 extends outwards from the side wall of the inner carrier 221, and in a specific example of the present application, the number of columnar protruding portions 2221 is 2 and are disposed on two opposite sides of the inner carrier 221. The end of the second coil 232 may be wound around the cylindrical protrusion 2221, that is, one end (an initial end) of the second coil 232 is wound around one of the cylindrical protrusions 2221, the body of the second coil 232 is wound around the outer circumference of the inner carrier 221, and the other end (an end) of the second coil 232 is wound around the other cylindrical protrusion 2221. In a specific example of the present application, the columnar protrusion 2221 has a T-shaped structure, that is, the thickness of the tip (outer end) of the columnar protrusion 2221 is thicker than that of other positions to prevent the second coil 232 from falling off during winding.

Specifically, the magnet 233 is disposed on an inner side wall of the outer carrier 222 opposite to the second coil 232, and in a specific example of the present application, the inner side wall of the outer carrier 222 has an opening facing the optical axis and facing the photosensitive assembly 10, and a side of the magnet 233 near the optical axis and a side near the photosensitive assembly 10 are not shielded by the outer carrier 222, so that the side of the magnet 233 near the optical axis may directly face the second coil 232, and a side of the magnet 233 near the photosensitive assembly 10 may directly face the first coil 231.

The number of magnets 233 is at least three, that is, the number of magnets 233 is 3 or more, at least one magnet 233 of the three magnets 233 may interact with the second coil 232 to generate a driving force in the Z-axis direction, and at least two magnets 233 of the three magnets 233 may interact with the first coil 231 to generate driving forces in the X-axis direction and the Y-axis direction.

In a specific example of the present application, the number of magnets 233 is four, four magnets 233 may be disposed at four sides of the outer carrier 222, and four magnets 233 may be disposed at four corners of the outer carrier 222, which is not limited to the present application. In this specific example, the magnet 233 has an N pole on a side facing the second coil 232 and an S pole on a side facing away from the second coil 232.

In an embodiment of the present application, in order to improve the stability of the movement of the driving device 20 during the optical anti-shake process and improve the imaging quality, the driving device 20 further includes a guide support structure 25 disposed between the fixed portion 21 and the movable portion 22. In a specific example of the present application, the optical anti-shake function is achieved by driving the outer carrier 222 to move, and the guide support structure 25 is disposed between the outer carrier 222 and the base body 2111, so that the guide support structure 25 can always guide and support the outer carrier 222 during the movement of the outer carrier 222 relative to the base 211, so that the outer carrier 222 can move smoothly. In another specific example of the present application, the optical anti-shake function is achieved by driving the inner carrier 221 to move, and the guide support structure 25 is disposed between the inner carrier 221 and the base 211, to which the present application is not limited.

The guide support structure 25 is disposed between the base 211 and the outer carrier 222 (or the inner carrier 221) such that frictional contact is always maintained between the base 211 and the guide support structure 25, and between the outer carrier 222 (or the inner carrier 221) and the guide support structure 25. When the first coil 231 is energized, the first coil 231 interacts with the magnet 233 to drive the outer carrier 222 (or the inner carrier 221) to move in the X-axis direction and the Y-axis direction, and during this process, the anti-shake elastic portion 2412 is deformed; when the first coil 231 is not energized, the anti-shake elastic portion 2412 returns to its original state and drives the outer carrier 222 to return.

Specifically, the guide support structure 25 is implemented as a mechanism having a track-ball structure, and the guide support structure 25 includes a track provided between the movable portion 22 and the fixed portion 21 and balls provided in the track, as shown in fig. 2 and 9. Since the balls are disposed in the track, the movement track of the balls is limited in the track, and the balls can move in the track according to a preset movement pattern, so as to provide a certain movement space for the movement of the outer carrier 222.

More specifically, the rails include a lower rail provided on the top surface of the base body 2111 of the base 211 and an upper rail provided on the bottom surface of the outer carrier 222, the positions of the upper rail and the lower rail corresponding to each other. The balls are accommodated between the upper rail and the lower rail and allowed to move along the lower rail and the upper rail, and thus, the balls are movably held between the outer carrier 222 and the base 211, and assembled between the outer carrier 222 and the base 211 in such a manner that the outer carrier 222 is suspended in the base 211.

In the embodiment of the present application, the guide support structure 25 includes a first guide support unit 251, a second guide support unit 252, a third guide support unit 253, and a fourth guide support unit 254, which correspond to the four first coils, respectively. The first guide supporting unit 251 includes a first lower rail 2511 concavely formed at a first side 202 of the base 211, a first upper rail 2512 concavely formed at the outer carrier and corresponding to the first lower rail 2511, and at least one first ball 2513 installed between the first upper rail 2512 and the first lower rail 2511; the second guiding and supporting unit 252 includes a second lower track 2521 concavely formed on the second side 203 of the base 211, a second upper track 2522 concavely formed on the outer carrier and corresponding to the second lower track 2521, and at least one second ball 2523 mounted between the second upper track 2522 and the second lower track 2521; the third guiding and supporting unit 253 includes a third lower rail 2531 concavely formed on the third side 204 of the base 211, a third upper rail 2532 concavely formed on the outer carrier and corresponding to the third lower rail 2531, and at least one third ball 2533 installed between the third upper rail 2532 and the third lower rail 2531; the fourth guide support unit 254 includes a fourth lower rail 2541 concavely formed at the fourth side 205 of the base 211, a fourth upper rail 2542 concavely formed at the outer carrier and corresponding to the fourth lower rail 2541, and at least one fourth ball 2543 installed between the fourth upper rail 2542 and the fourth lower rail 2541.

It should be noted that, the guiding and supporting structure 25 of the driving device is matched with the first coil 231 of the driving portion 23, so that the driving force of the driving portion 23 can be improved and mutual interference between the components of the guiding and supporting structure 25 and other components can be avoided by reasonably arranging the driving components of the driving portion 23.

Specifically, the first coils and the tracks having the same length extending direction are disposed on the same side of the base 211 along the direction. For example, the first coil having the length extending direction in the X-axis direction and the corresponding track are disposed on the side of the base 211 in the X-axis direction, and the first coil having the length extending direction in the Y-axis direction and the corresponding track are disposed on the side of the base 211 in the Y-axis direction, so that the track is prevented from extending inward and interfering with the second elastic member.

In the embodiment of the present application, the extending direction of the lower rail of each guide support unit of the guide support structure 25 coincides with the extending direction of the corresponding first coil 231. Accordingly, the at least one first coil 231 includes a first sub-coil, a second sub-coil, a third sub-coil and a fourth sub-coil, the extending direction of the first lower track 2511 is consistent with the extending direction of the first sub-coil, the extending direction of the second lower track 2521 is consistent with the extending direction of the second sub-coil, the extending direction of the third lower track 2531 is consistent with the extending direction of the third sub-coil, and the extending direction of the fourth lower track 2541 is consistent with the extending direction of the fourth sub-coil.

The upper rail and the lower rail of each guide support unit of the guide support structure 25 are perpendicular to each other in the length extension direction, so that they have a cross shape. The upper rail and the lower rail have their length extending directions perpendicular to each other to prevent the outer carrier 222 from interfering with each other when moving in the X-axis direction and the Y-axis direction.

Accordingly, the extending direction of the first upper rail 2512 is perpendicular to the extending direction of the first lower rail 2511, the extending direction of the second lower rail 2521 is perpendicular to the extending direction of the second upper rail 2522, the extending direction of the third lower rail 2531 is perpendicular to the extending direction of the third upper rail 2532, and the extending direction of the fourth lower rail 2541 is perpendicular to the extending direction of the fourth upper rail 2542.

The upper rail or the lower rail of each guide support unit of the guide support structure 25 has both a rail extending in the X-axis direction and a rail extending in the Y-axis direction. That is, among the lower rails located on the top surface of the base body 2111 of the base 211, there are both lower rails extending in the X-axis direction and lower rails extending in the Y-axis direction; among the upper rails located on the bottom surface of the outer carrier 222, there are both upper rails extending in the X-axis direction and upper rails extending in the Y-axis direction. The arrangement mode can prevent the balls from rotating during optical anti-shake, and further influence the driving effect. Further, rails having different extension directions are located at adjacent sides of the base 211 to provide a larger mounting position for the first coil 231.

The first lower track 2511, the second lower track 2521, the third lower track 2531 and the fourth lower track 2541 are rotationally symmetrical with respect to the optical axis. The first upper rail 2512, the second upper rail 2522, the third upper rail 2532 and the fourth upper rail 2542 are rotationally symmetrical with respect to the optical axis.

In an embodiment of the present application, the driving device 20 further comprises an electrical connection member 26, as shown in fig. 2. The electric connection member 26 is disposed at the base 211 of the fixing portion 21 and is electrically connected to the elastic member 24 so as to supply the operating power to the second coil 232 and the first coil 231 through the electric connection member 26 and the elastic member 24. As shown in fig. 11 and 12, the electrical connection member 26 includes an upper end 261, a middle 262, and a lower end 263. The upper end 261, the middle 262 and the lower end 263 are electrically connected to each other to provide the driving device 20 with electric power through the electric connection member 26 to be electrically connected to an external power supply device.

Specifically, in the embodiment of the present application, the middle portion 262 of the electrical connection member 26 is disposed in the base main body 2111, the upper end portion 261 of the electrical connection member 26 integrally extends upward from the base post 2112 (as shown in fig. 11 and 12), and the lower end portion 263 of the electrical connection member 26 extends downward from the base main body 2111 (as shown in fig. 13) to be electrically connected with the electronic device outside the driving apparatus 20. The middle portion 262 of the electrical connection member 26 includes a plurality of electrical connection elements, at least one of the plurality of electrical connection elements of the middle portion 262 of the electrical connection member 26 integrally extending upwardly to the top end of the base strut 2112 to form an upper end 261 of the electrical connection member 26; at least one of the plurality of electrical connection elements of the middle portion 262 of the electrical connection member 26 integrally extends downwardly out of the base body 2111 to form a lower end 263 of the electrical connection member 26.

Accordingly, in an embodiment of the present application, the focusing elastic portion 2411 of the first elastic element 241 further comprises a conductive end, wherein the conductive end extends outwardly from the focusing elastic inner profile. In a specific example of the present application, the number of the conductive terminals is two, the positions of the conductive terminals correspond to the columnar protrusions 2221 of the inner carrier 221, and the conductive terminals are electrically connected to the second coil 232 wound around the columnar protrusions 2221 of the inner carrier 221.

The number of the upper ends 261 of the electric connection members 26 is at least two, and the upper ends 261 of at least two electric connection members 26 are electrically connected to the anti-shake elastic outer contour, so that the electric energy provided by the external power supply device can sequentially pass through the lower ends 263, the middle part 262, the upper ends 261, the anti-shake elastic parts 2412 and the focusing elastic parts 2411 of the electric connection members 26, reach the second coil 232, and drive the inner carrier 221.

In a specific example of the present application, the number of the upper ends 261 of the electrical connection members 26 is four, and the four upper ends are respectively provided on the four base posts 2112. In a specific example of the present application, only the upper ends 261 of the four electric connection members 26 electrically connect the anti-shake elastic portion 2412 and the upper ends 261 of the focusing elastic portion 2411 at the same time to achieve circuit conduction. Of course, it is understood that the upper ends 261 of the four electrical connection members 26 may be configured to conduct a circuit, which is not limited by the present application.

In one specific example of the present application, the first elastic member 241 has a split structure, the second elastic member 242 has a unitary structure, and two electrical connection points of the second coil 232 are electrically connected to the first elastic member 241 to achieve electrical conduction of the second coil 232. In another specific example of the present application, the first elastic member 241 has a split structure, the second elastic member 242 has a split structure, and the two electrical connection points of the second coil 232 may be electrically connected to the first elastic member 241 to achieve electrical conduction, or may be electrically connected to the second elastic member 242 to achieve electrical conduction of the second coil 232. In still another specific example of the present application, the first elastic member 241 has a unitary structure, the second elastic member 242 has a unitary structure, and two electrical connection points of the second coil 232 cannot be electrically connected to the first elastic member 241 at the same time, and thus, it is required that two electrical connection points of the second coil 232 are electrically connected to the first elastic member 241 and the second elastic member 242, respectively, to achieve electrical conduction of the second coil 232.

The manner of forming the electrical connection member 26 is not limited to the present application, and in a specific example of the present application, the electrical connection member 26 is integrally formed in the base 211 through an insert molding process, that is, the middle portion 262 of the electrical connection member 26 is integrally formed in the base body 2111, the upper end portion 261 of the electrical connection member 26 is integrally formed in the base pillar 2112, and the lower end portion 263 of the electrical connection member 26 extends downward from the base body 2111 to the base 211 and is exposed outside the base body 2111. In another specific example of the present application, the electrical connection member 26 is formed on the surface of the base 211 by attaching.

In an embodiment of the present application, the driving device 20 further includes a magnetically conductive member 27, as shown in fig. 12. The magnetic conductive member 27 is disposed opposite to the magnet 233 in a predetermined direction (for example, a height direction). The forming manner of the magnetic conductive member 27 is not limited to the present application, and in a specific example of the present application, the magnetic conductive member 27 is integrally formed on the base body 2111 of the base 211 through an insert injection molding process; in another specific example of the present application, the magnetically permeable member 27 is fixed to the base body 2111 of the base 211 by means of adhesive, so that the magnetically permeable member 27 can be opposed to the magnet 233.

The magnetic conductive member 27 and the electrical connection member 26 should avoid mutual interference, and may be implemented in various manners. For example, the magnetically permeable member 27 may be disposed at an upper end or a lower end of the middle portion 262 of the electrical connection member 26 to avoid interference between the magnetically permeable member 27 and the electrical connection member 26. The magnetic conductive member 27 and the electrical connection member 26 may be made of different materials to avoid mutual interference, for example, the magnetic conductive member 27 is made of a magnetic conductive material, so that a magnetic attraction force can be generated between the magnetic conductive member 27 and the magnet 233, and the electrical connection member 26 is made of a non-magnetic conductive material capable of conducting signals, so as to realize mutual independence between the magnetic conductive function and the electrical connection function of the driving device 20, and simplify assembly.

The magnetic conductive members 27 are disposed at corners of the base 211, so that one magnetic conductive member 27 can simultaneously correspond to two adjacent magnets 233, and the guide support structure 25 can be always clamped between the base 211 and the outer carrier 222 (or the inner carrier 221) by magnetic attraction generated between the magnetic conductive member 27 and the magnets 233, and in the process of optical anti-shake, the guide support structure 25 can always maintain frictional contact with the base 211 and the outer carrier 222 (or the inner carrier 221). Further, a magnetic attraction force is generated between the magnetic conductive member 27 and the magnet 233 along the Z-axis direction, so as to maintain the stability of the movement of the outer carrier 222 (or the inner carrier 221), maintain the centering effect of the outer carrier 222 (or the inner carrier 221), and effectively prevent the outer carrier 222 (or the inner carrier 221) from falling off along with the shake or inversion of the camera module.

In an embodiment of the present application, the driving device 20 further includes a position sensing element 28, as shown in fig. 10. The position sensing element 28 is disposed opposite to the magnet 233, the position sensing element 28 is disposed on the base 211, when the outer carrier 222 moves, the relative position between the position sensing element 28 and the magnet 233 changes, and the position of the outer carrier 222 can be determined according to the magnetic field strength of the magnet 233 sensed by the position sensing element 28, so that the current of the first coil 231 is adjusted to move the outer carrier 222 to a desired position. In an embodiment of the present application, the position sensing element 28 may be a hall element, a driving integrated circuit (driving IC), or tunneling magnetoresistance (TMR, tunnel Magneto Resistance).

The specific position of the position sensing element 28 is not limited by the present application, and in one specific example of the present application, the top surface of the position sensing element 28 is not higher than the top surface of the first coil 231, so that, on one hand, the height of the driving device 20 can be reduced, and on the other hand, the position sensing element 28 can be protected to prevent the position sensing element 28 from being bumped during the movement. In another specific example of the present application, the position sensing element 28 is disposed on the bottom surface of the base 211, as shown in fig. 13.

The embodiment in which the position sensing element 28 is electrically connected to the electrical connection member 26 to achieve electrical connection between the position sensing element 28 and the electrical connection member 26 is not a limitation of the present application. In a specific example of the present application, the base body 2111 of the base 211 is provided with an opening at the position of the position sensing element 28 as a place for the position sensing element 28, so that the position sensing element 28 can be directly connected to the electrical connection member 26 through the opening. Also, as the height of the position sensing element 28 is reduced, the height of the position sensing element 231 may be reduced, which not only simplifies the circuit-on manner of the driving device 20, but also further reduces the height of the driving device 20.

In summary, the imaging module according to the embodiment of the present application is illustrated, wherein the driving device 20 increases the installation space of the driving portion 23 mainly by reasonably arranging the driving portion 23 and the guiding support structure 25, so that the driving force of the driving portion 23 can be increased without adding any additional components, so as to simplify the design scheme for increasing the driving force of the driving portion 23, and avoid the structural complexity of the driving portion 23.

It will be appreciated by persons skilled in the art that the embodiments of the application described above and shown in the drawings are by way of example only and are not limiting. The objects of the present application have been fully and effectively achieved. The functional and structural principles of the present application have been shown and described in the examples and embodiments of the application may be modified or practiced without departing from the principles described.

Claims

1. A driving device, characterized by comprising:

a fixing part with a containing cavity;

an elastic member disposed in the housing chamber;

a driving unit for driving the movable unit to move relative to the fixed unit;

2. The driving device of claim 1, wherein the at least one first coil is located on a side of the fixed portion.

3. The driving device according to claim 2, wherein the fixed portion includes an upper cover and a base that are fastened to each other to form the accommodating cavity, the movable portion includes an outer carrier and an inner carrier movably mounted to the outer carrier, the inner carrier is adapted to mount the optical lens therein, wherein the at least one first coil is disposed on the base, and the at least one magnet is disposed on the outer carrier, wherein the at least one first coil and the at least one magnet of the driving portion are adapted to drive the outer carrier to move the inner carrier carrying the optical lens in a plane perpendicular to the optical axis for optical anti-shake.

4. The driving device according to claim 3, wherein the driving part further comprises a second coil provided to the inner carrier and corresponding to the magnet, the at least one magnet and the second coil of the driving part being adapted to drive the inner carrier to move relative to the outer carrier along a direction set by the optical axis for optical focusing.

5. The driving device according to claim 4, wherein the base has a first side, a second side, a third side, and a fourth side which are rectangular with each other, the first side and the third side extending along an X-axis direction set by an X-axis, the second side and the fourth side extending along a Y-axis direction set by a Y-axis, wherein the at least one first coil includes four first coils which are located on the first side, the second side, the third side, and the fourth side, respectively, and extend along the first side, the second side, the third side, and the fourth side, respectively.

6. The drive of claim 5, wherein the guide support structure comprises a first guide support unit, a second guide support unit, a third guide support unit, and a fourth guide support unit; the first guide supporting unit comprises a first lower track concavely formed on a first side of the base, a first upper track concavely formed on the outer carrier and corresponding to the first lower track, and at least one first ball arranged between the first upper track and the first lower track; the second guide supporting unit comprises a second lower rail concavely formed on a second side of the base, a second upper rail concavely formed on the outer carrier and corresponding to the second lower rail, and at least one second ball arranged between the second upper rail and the second lower rail; the third guide supporting unit comprises a third lower track concavely formed on a third side of the base, a third upper track concavely formed on the outer carrier and corresponding to the third lower track, and at least one third ball arranged between the third upper track and the third lower track; the fourth guide supporting unit comprises a fourth lower rail concavely formed on a fourth side of the base, a fourth upper rail concavely formed on the outer carrier and corresponding to the fourth lower rail, and at least one fourth ball which is erected between the fourth upper rail and the fourth lower rail;

The first coil comprises a first sub-coil, a second sub-coil, a third sub-coil and a fourth sub-coil, the extending direction of the first lower track is consistent with that of the first sub-coil, the extending direction of the second lower track is consistent with that of the second sub-coil, the extending direction of the third lower track is consistent with that of the third sub-coil, and the extending direction of the fourth lower track is consistent with that of the fourth sub-coil.

7. The driving device according to claim 6, wherein an extending direction of the first upper rail is perpendicular to an extending direction of the first lower rail, an extending direction of the second lower rail is perpendicular to an extending direction of the second upper rail, an extending direction of the third lower rail is perpendicular to an extending direction of the third upper rail, and an extending direction of the fourth lower rail is perpendicular to an extending direction of the fourth upper rail.

8. The driving device according to claim 6, wherein an extending direction of the first lower rail is perpendicular to an extending direction of the second lower rail, the extending direction of the second lower rail is perpendicular to an extending direction of the third lower rail, the extending direction of the third lower rail is perpendicular to an extending direction of the fourth lower rail, and the extending direction of the fourth lower rail is perpendicular to an extending direction of the first lower rail.

9. The drive of claim 8, wherein the first lower track, the second lower track, the third lower track, and the fourth lower track are rotationally symmetric with respect to the optical axis.

10. The driving device according to claim 1 or 4, wherein the elastic member includes a first elastic component extending between the fixed portion and the movable portion, the first elastic component including a focusing elastic portion and an anti-shake elastic portion extending on a plane perpendicular to the optical axis, wherein the focusing elastic portion is arranged in a rotationally symmetrical pattern with respect to the optical axis, and the anti-shake elastic portion is arranged in an axially symmetrical pattern with respect to the optical axis.

11. The driving device according to claim 10, wherein the focusing elastic portion extends between the inner carrier and the outer carrier, and the anti-shake elastic portion extends between the outer carrier and the fixing portion.

12. The driving device according to claim 11, wherein the focusing elastic portion includes a first focusing elastic unit and a second focusing elastic unit rotationally symmetric with respect to the optical axis, wherein the first focusing elastic unit includes a first focusing elastic inner profile portion fixed to the inner carrier, a first focusing elastic outer profile portion fixed to the outer carrier, and a first focusing elastic deformation portion extending between the first focusing elastic inner profile portion and the first focusing elastic outer profile portion, and the second focusing elastic unit includes a second focusing elastic inner profile portion fixed to the inner carrier, a second focusing elastic outer profile portion fixed to the outer carrier, and a second focusing elastic deformation portion extending between the second focusing elastic inner profile portion and the second focusing elastic outer profile portion.

13. The driving device according to claim 12, wherein the anti-shake elastic portion includes first and fourth anti-shake elastic units symmetrically distributed with respect to the X axis, and second and third anti-shake elastic units symmetrically distributed with respect to the X axis, wherein the first and second anti-shake elastic units are symmetrically distributed with respect to the Y axis, the third and fourth anti-shake elastic units are symmetrically distributed with respect to the Y axis, the first anti-shake elastic unit is connected to the first focusing elastic unit, and the third anti-shake elastic unit is connected to the second focusing elastic unit.

14. The drive of claim 10, wherein the resilient member further comprises a second resilient assembly extending between the inner and outer carriers, the first and second resilient assemblies being oppositely disposed on opposite sides of the movable portion, wherein the second resilient assembly comprises a second resilient inner profile secured to the inner carrier, a second resilient outer profile secured to the outer carrier, and a second resilient deformation extending between the second resilient inner profile and the second resilient outer profile.

15. The drive device according to claim 14, wherein the magnet and the second coil correspond to each other in a first direction, and the magnet and the first coil correspond to each other in a second direction, wherein the first direction is perpendicular to the second direction.

16. A camera module, comprising:

an optical lens;

a photosensitive assembly; and

a drive assembly according to any one of claims 1 to 15, wherein the optical lens is mounted within the drive means and is held in the optical path of the photosensitive assembly.