Camera module and electronic device

Abstract

The application provides a camera module and an electronic device, and belongs to the technical field of camera modules. The camera module comprises a magnet fixing assembly, a motor automatic focusing (AF) assembly and a base assembly. The motor AF assembly comprises an optical image stabilization (OIS) assembly and an AF coil which are connected to each other. The OIS assembly comprises an OIS coil. The magnet fixing assembly comprises a first driving magnet, a second driving magnet and a first fixing member. The first driving magnet and the second driving magnet are fixedly arranged on the first fixing member. The first driving magnet is used for driving the AF coil to move. The second driving magnet is used for driving the OIS coil to move. The first fixing member is arranged on the base assembly. The AF coil and the OIS coil are movable coils. In this way, the image acquisition effect of the camera module can be enhanced.

Description

Technical Field

[0001] This application relates to the field of camera module technology, and more particularly to a camera module and an electronic device. Background Technology

[0002] With the continuous development of electronic technology, electronic devices are playing an increasingly important role in people's lives. Current electronic devices typically include camera modules for image acquisition. These modules often incorporate moving magnet motors to achieve functions such as image stabilization. However, as users' demands for image quality increase, electronic devices often tightly arrange multiple camera modules. The moving magnets within these tightly arranged modules attract and repel each other, causing lens deflection and rendering optical image stabilization (OIS) ineffective, resulting in poor image acquisition performance. Summary of the Invention

[0003] This application provides a camera module and an electronic device to solve the problem that movable magnets in multiple closely arranged camera modules attract and repel each other, causing the camera module's lens to deflect and OIS to fail, resulting in poor image acquisition performance of the current camera module.

[0004] To solve the above problems, this application is implemented as follows:

[0005] In a first aspect, embodiments of this application provide a camera module, including: a magnetic fixing assembly, a motor-driven autofocus (AF) assembly, and a base assembly. The motor-driven AF assembly includes an optical image stabilization (OIS) assembly and an AF coil connected to each other. The OIS assembly includes an OIS coil. The magnetic fixing assembly includes a first driving magnet, a second driving magnet, and a first fixing member. The first driving magnet and the second driving magnet are both fixedly disposed on the first fixing member. The first driving magnet is used to drive the AF coil to move, and the second driving magnet is used to drive the OIS coil to move. The first fixing member is disposed on the base assembly. Both the AF coil and the OIS coil are movable coils.

[0006] Secondly, embodiments of this application also provide an electronic device, including the camera assembly described in the first aspect.

[0007] In this embodiment, since both the first driving magnet and the second driving magnet are fixedly mounted on the first fixing member, and the first driving magnet is used to drive the AF coil to move, and the second driving magnet is used to drive the OIS coil to move, that is, the first driving magnet and the second driving magnet are magnets with fixed positions, while the AF coil and the OIS coil are both movable coils. In this way, by keeping the positions of the first driving magnet and the second driving magnet fixed, and making the AF coil and the OIS coil both movable coils, the phenomenon of mutual attraction and repulsion of magnets due to the movement of magnets is avoided, which would lead to lens deflection of the camera module and OIS failure. This enhances the image acquisition effect of the camera module. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is one of the structural schematic diagrams of the camera module provided in the embodiments of this application;

[0010] Figure 2 This is the second schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0011] Figure 3 This is the third schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0012] Figure 4 This is the fourth structural schematic diagram of the camera module provided in the embodiments of this application;

[0013] Figure 5 This is the fifth schematic diagram of the camera module provided in the embodiments of this application;

[0014] Figure 6 This is the sixth schematic diagram of the camera module provided in the embodiments of this application;

[0015] Figure 7 This is the seventh schematic diagram of the camera module provided in the embodiments of this application;

[0016] Figure 8 This is the eighth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0017] Figure 9 This is the ninth schematic diagram of the camera module provided in the embodiments of this application;

[0018] Figure 10This is the tenth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0019] Figure 11 This is eleventh of the structural schematic diagrams of the camera module provided in the embodiments of this application;

[0020] Figure 12 This is the twelfth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0021] Figure 13 This is the thirteenth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0022] Figure 14 This is the fourteenth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0023] Figure 15 This is the fifteenth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0024] Figure 16 This is the sixteenth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0025] Figure 17 This is the seventeenth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0026] Figure 18 This is the eighteenth schematic diagram of the camera module provided in the embodiments of this application;

[0027] Figure 19 This is the nineteenth schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0028] Figure 20 This is the twentieth structural schematic diagram of the camera module provided in the embodiments of this application;

[0029] Figure 21 This is the twenty-first schematic diagram of the camera module provided in the embodiments of this application. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] The terms "first," "second," etc., used in the embodiments of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices. Additionally, the use of "and / or" in this application indicates at least one of the connected objects, such as A and / or B and / or C, representing seven possibilities: including A alone, B alone, C alone, and the presence of both A and B, both B and C, both A and C, and the presence of A, B, and C.

[0032] It should be noted that in related technologies, when a camera module is applied to an electronic device, the motor corresponding to the camera module is typically a moving-magnet motor. The magnet in a moving-magnet motor moves along with the moving part, resulting in a constantly changing magnetic field. This constantly changing magnetic field interferes with the image acquisition of the camera module, leading to poor image acquisition performance. To address the above technical problem, the following embodiments are proposed:

[0033] Please see Figures 1 to 21 , Figures 1 to 21 These are schematic diagrams of the camera module provided in the embodiments of this application. Figures 1 to 21 As shown, the camera module includes: a magnetic fixing assembly 100, a motor autofocus (AF) assembly 200, and a base assembly 300. The motor AF assembly 200 includes an optical image stabilization (OIS) assembly 201 and an AF coil 15 connected to each other. The OIS assembly 201 includes an OIS coil 202. The magnetic fixing assembly 100 includes a first driving magnet 20, a second driving magnet 110, and a first fixing member 1. The first driving magnet 20 and the second driving magnet 110 are both fixedly disposed on the first fixing member 1. The first driving magnet 20 is used to drive the AF coil 15 to move, and the second driving magnet 110 is used to drive the OIS coil 202 to move. The first fixing member 1 is disposed on the base assembly 300. Both the AF coil 15 and the OIS coil 202 are movable coils.

[0034] When a camera module is used in an electronic device, its placement on the device is not limited. Optionally, the camera module can be placed on the back panel of the electronic device, and thus the camera module can also be referred to as the main camera module of the electronic device.

[0035] The magnet fixing component 100, the motor AF component 200 and the base component 300 can constitute the motor of the camera module. Since the first driving magnet 20 and the second driving magnet 110 are both fixedly set on the first fixing member 1, that is, the setting position of the first driving magnet 20 and the second driving magnet 110 can be fixed, the motor in this embodiment can be called a static magnet motor.

[0036] Among them, the motor AF component 200 can be understood as a component used to realize the autofocus function of the camera module, while the OIS component 201 can be understood as a component used to realize the optical image stabilization function of the camera module.

[0037] In this design, since the first driving magnet 20 drives the AF coil 15 and the second driving magnet drives the OIS coil 202, the AF coil 15 and OIS coil 202 can be understood as moving parts included in the camera module. That is, under the driving action of the first driving magnet 20 and the second driving magnet 110, the AF coil 15 and OIS coil 202 can move, and with the movement of the AF coil 15 and OIS coil 202, other components can be driven to move, thereby achieving autofocus and optical image stabilization. These other components can be understood as the components in the motor AF assembly 200 used to achieve autofocus, and the components in the OIS assembly 201 used to achieve optical image stabilization. Since these other components move with the moving parts (i.e., the AF coil 15 and OIS coil 202), they can also be referred to as moving parts.

[0038] It should be noted that the specific components included in the actuator are not limited here. Optionally, the actuator may include a first actuator and a second actuator. The second actuator can be understood as a component that moves together with the OIS coil 202. For example, the second actuator may include: the OIS cover 3, the lens holder 4, and the first electrical connector 7 mentioned later. The first actuator can be understood as a component that moves together with the AF coil 15. For example, in addition to the second actuator mentioned above, the first actuator may also include: a damper 2, the first adsorption magnet 6, the second adsorption magnet 5 mentioned later, the AF carrier 17, and a position detection component. The position detection component may also be referred to as an AF sensing magnet.

[0039] The first driving magnet 20 and the second driving magnet 110 are both fixedly mounted on the first fixing member 1. The specific connection method between the first driving magnet 20 and the second driving magnet 110 and the first fixing member 1 is not limited here. Optionally, the first driving magnet 20 and the second driving magnet 110 can both be fixed to the first fixing member 1 by an adhesive layer. Alternatively, the first driving magnet 20 and the second driving magnet 110 can also both be fixed to the first fixing member 1 by a snap-fit ​​component. The first fixing member 1 can also be referred to as the outer shell. That is, the first fixing member 1 can fix the first driving magnet 20 and the second driving magnet 110 to provide a closed-loop magnetic circuit corresponding to the first driving magnet 20 and the second driving magnet 110. The first fixing member 1 can also play a role in protection and dust prevention.

[0040] In this embodiment, since the first driving magnet 20 and the second driving magnet 110 are both fixedly mounted on the first fixing member 1, and the first driving magnet 20 is used to drive the AF coil 15 to move, and the second driving magnet 110 is used to drive the OIS coil 202 to move, that is, the first driving magnet 20 and the second driving magnet 110 are magnets with fixed positions, while the AF coil 15 and the OIS coil 202 are both movable coils. In this way, by keeping the positions of the first driving magnet 20 and the second driving magnet 110 fixed, and keeping the AF coil 15 and the OIS coil 202 both movable coils, the phenomenon of mutual attraction and repulsion of magnets due to the movement of magnets is avoided, which leads to lens deflection of the camera module and OIS failure. This enhances the image acquisition effect of the camera module.

[0041] In addition, since the first driving magnet 20 and the second driving magnet 110 are magnets with fixed positions, the magnetic field generated by the first driving magnet 20 and the second driving magnet 110 is a closed static magnetic circuit, and the change in the magnetic field generated by the first driving magnet 20 and the second driving magnet 110 is small. This allows for static magnetic drive of the AF coil 15 and the OIS coil 202. At the same time, it can also reduce the interference caused by the large change in the magnetic field to the image acquisition of the camera module, and further enhance the image acquisition effect of the camera module.

[0042] It should be noted that, since the moving parts in this embodiment include AF coil 15 and OIS coil 202, instead of magnets as in related technologies, and the AF coil 15 and OIS coil 202 are lighter than magnets, the energy consumed during movement can be reduced, thereby improving the focusing speed of the camera module and reducing the power consumption of AF coil 15 and OIS coil 202 during movement. When the camera module is applied to an electronic device, it can also reduce the power consumption of the entire electronic device and extend the battery life of the entire electronic device.

[0043] It should be noted that the specific number of the first driving magnet 20 and the second driving magnet 110 is not limited here. Optionally, there can be one of each of the first driving magnet 20 and the second driving magnet 110; alternatively, there can be two of each of the first driving magnet 20 and the second driving magnet 110.

[0044] As an optional implementation, the number of the first driving magnets 20 is multiple, and the multiple first driving magnets 20 are respectively located on different edges of the first fixing member 1; and / or,

[0045] The number of the second driving magnets 110 is multiple, and the first fixing member 1 has a first through hole 101. The multiple second driving magnets 110 are respectively located on different inner walls of the first through hole 101.

[0046] The arrangement of the multiple first driving magnets 20 on different edges of the first fixing member 1 is not limited here. Optionally, the multiple first driving magnets 20 can be distributed in a centrally symmetrical manner on different edges of the first fixing member 1, or alternatively, the multiple first driving magnets 20 can be distributed in an asymmetrical manner on different edges of the first fixing member 1. In this way, since there are multiple first driving magnets 20 and the multiple first driving magnets 20 are arranged in different positions on the first fixing member 1, the driving force on the AF coil 15 can be enhanced.

[0047] The distribution of the multiple second driving magnets 110 on different inner walls of the first through hole 101 is not limited here. Optionally, the multiple second driving magnets 110 can be arrayed on different inner walls of the first through hole 101. For example, the first through hole 101 is a rectangular through hole with four inner walls. The number of second driving magnets 110 is four, and one second driving magnet 110 can be provided on each of the four inner walls. The four second driving magnets 110 can be arrayed. In this way, the driving force on the OIS coil 202 can be enhanced due to the presence of multiple second driving magnets 110.

[0048] In this embodiment, since there are multiple first driving magnets 20 and second driving magnets 110, and they are distributed at different positions on the first fixing member 1, a constant magnetic field can be provided to the AF coil 15 and OIS coil 202 at different positions, thereby further enhancing the driving effect on the AF coil 15 and OIS coil 202.

[0049] It should be noted that the more first driving magnets 20 and second driving magnets 110 there are, the better the driving effect on AF coil 15 and OIS coil 202 will be.

[0050] As an optional implementation, a bent magnetic yoke 102 is provided on the inner wall of the first through hole 101, and the second driving magnet 110 is fixedly connected to the magnetic yoke 102.

[0051] Because the yoke 102 is bent and positioned on the inner wall of the first through hole 101, its limiting effect is enhanced. Similarly, because the second driving magnet 110 is fixedly connected to the yoke 102, its limiting effect is also enhanced. Furthermore, the bent design of the yoke 102 increases its area, thereby increasing the area available for the second driving magnet 110.

[0052] It should be noted that the arrangement of the magnetic yoke 102 on the inner wall of the first through hole 101 is not specifically limited here. Optionally, the magnetic yoke 102 can be fixed to the inner wall of the first through hole 101 with glue. Alternatively, the magnetic yoke 102 can also be snapped into the inner wall of the first through hole 101.

[0053] In this embodiment of the application, a bent magnetic yoke 102 is provided on the inner wall of the first through hole 101, and the second driving magnet 110 is fixedly connected to the magnetic yoke 102. In this way, the installation accuracy and reliability of the second driving magnet 110 can be enhanced by the magnetic yoke 102.

[0054] As an optional implementation method, see [link to implementation details]. Figure 17 The optical image stabilization (OIS) component 201 further includes a first electrical connector 7. The OIS coil 202 includes a first OIS driving coil 9, a second OIS driving coil 901, a third OIS driving coil 8, and a fourth OIS driving coil 801. The first OIS driving coil 9 and the second OIS driving coil 901 are fixedly connected to a first sidewall and a second sidewall that are respectively disposed opposite to each other on the first electrical connector 7. The third OIS driving coil 8 and the fourth OIS driving coil 801 are fixedly connected to a third sidewall and a fourth sidewall that are respectively disposed opposite to each other on the first electrical connector 7. The third sidewall is connected to the first sidewall and the second sidewall, and the fourth sidewall is connected to the first sidewall and the second sidewall, respectively.

[0055] The driving force applied by the second driving magnet 110 to the first OIS driving coil 9, the second OIS driving coil 901, the third OIS driving coil 8, and the fourth OIS driving coil 801 is in the same direction.

[0056] The first and second sidewalls on the first electrical connector 7, which are arranged opposite to each other, can be understood as being distributed in the X direction, and the third and fourth sidewalls on the first electrical connector 7, which are arranged opposite to each other, can be understood as being distributed in the Y direction. Thus, since the first OIS drive coil 9 and the second OIS drive coil 901 are fixedly connected to the first and second sidewalls on the first electrical connector 7, respectively, and the third OIS drive coil 8 and the fourth OIS drive coil 801 are fixedly connected to the third and fourth sidewalls on the first electrical connector 7, the first OIS drive coil 9 and the second OIS drive coil 901 can also be understood as being distributed in the X direction, and the third OIS drive coil 8 and the fourth OIS drive coil 801 can also be understood as being distributed in the Y direction.

[0057] It should be noted that, optionally, the second driving magnet 110 may include an OIS X driving magnet 13 and an OIS Y driving magnet 14, and the number of OIS X driving magnets 13 may be two, and the two OIS X driving magnets 13 may be respectively arranged opposite to the first OIS driving coil 9 and the second OIS driving coil 901; similarly, the number of OIS Y driving magnets 14 may be two, and the two OIS Y driving magnets 14 may be respectively arranged opposite to the third OIS driving coil 8 and the fourth OIS driving coil 801.

[0058] The specific type of the first electrical connector 7 is not limited here. Optionally, the first electrical connector 7 can be a flexible printed circuit board (FPC), so the first electrical connector 7 can also be called an OIS FPC.

[0059] In this embodiment, since a first OIS drive coil 9 and a second OIS drive coil 901 are distributed in the X direction, and a third OIS drive coil 8 and a fourth OIS drive coil 801 are distributed in the Y direction, that is, dual drive coils are provided in both the X and Y directions. This solves the problem of insufficient thrust caused by the small effective magnetic field of the moving parts (i.e., other components used for optical image stabilization) in their mechanical positions. It can achieve the effect of fast response and large driving force, so that the motor of the camera module can perform a larger stabilization angle. In other words, it can increase the driving force on other components used for optical image stabilization, that is, it can further enhance the optical image stabilization effect of the camera module.

[0060] It should be noted that, since dual drive coils are provided in both the X and Y directions in this embodiment, compared with the method of providing a single drive coil only in both the X and Y directions, the thrust in this embodiment is expected to increase by 2 times. With the effective focal length (EFL) of the camera module lens remaining unchanged, the image stabilization angle can be increased by 2 times, the focusing speed can be increased by half (that is, since the mass of the actuator remains unchanged, the thrust increases by 2 times, and the acceleration increases by 2 times; for details, please refer to the calculation formula F=ma, where F represents the thrust, m represents the mass of the actuator, and a represents the acceleration of the actuator), and the power consumption is reduced by half.

[0061] In addition, the second driving magnet 110 can provide a constant radial magnetic field, and the energized coil included inside the OIS coil 202 can carry axial current. The magnetic field generated by the OIS coil 202 itself can be determined by the right-hand screw (i.e., the right-hand rule). The magnetic fields of the OIS coil 202 and the second driving magnet 110 are superimposed to generate an axial thrust. That is, the magnetic field generated by the OIS coil 202 and the fixed magnetic field generated by the second driving magnet 110 can attract or repel each other, and under the action of the above-mentioned attraction or repulsion force, the OIS coil 202 drives the above-mentioned actuator to move.

[0062] When the first driving magnet 20 is used to drive the AF coil 15 to move, the AF coil 15 will be subjected to the Lorentz force in the constant magnetic field generated by the first driving magnet 20, thereby generating motion. It should be noted that the left-hand rule can be used to determine the direction of the driving force (i.e. the Lorentz force) on the AF coil 15.

[0063] It should be noted that the specific connection method of the above-mentioned drive coil is not limited here.

[0064] As an optional implementation, the first OIS driving coil 9 and the second OIS driving coil 901 are connected in series, or the first OIS driving coil 9 and the second OIS driving coil 901 are connected in parallel.

[0065] The third OIS driving coil 8 and the fourth OIS driving coil 801 are connected in series, or the third OIS driving coil 8 and the fourth OIS driving coil 801 are connected in parallel.

[0066] When the first OIS drive coil 9 and the second OIS drive coil 901 are connected in series, and the third OIS drive coil 8 and the fourth OIS drive coil 801 are connected in series, the current in the drive coil can be adjusted by the wiring and the winding assembly direction of the drive coil, so that the driving force of the first OIS drive coil 9 and the second OIS drive coil 901, as well as the third OIS drive coil 8 and the fourth OIS drive coil 801, always maintains the same direction; and the wire diameter and number of turns of the drive coil can be adjusted according to the result of electromagnetic force (EM) (i.e., the driving force on the drive coil), and the number of turns and loops of the drive coil can be adjusted according to the resistance of the drive coil.

[0067] For example, if the voltage / resistance of the drive coil is less than or equal to 120mA, and the drive voltage is typically 2.8V or 3.2V, then the wire diameter of the drive coil can be determined to be 0.04mm, the enameling layer thickness to be 0.01mm, the number of turns in a single drive coil to be 8*6=48, the resistance of a single drive coil to be 10.9Ω, and the resistance of two drive coils to be 21.8Ω. However, the specific values ​​mentioned above are not limited here.

[0068] In this embodiment, the diversity and flexibility of the connection methods of the first OIS drive coil 9, the second OIS drive coil 901, the third OIS drive coil 8, and the fourth OIS drive coil 801 can be further increased.

[0069] As an optional implementation, when the first OIS drive coil 9 and the second OIS drive coil 901 are connected in parallel, and the third OIS drive coil 8 and the fourth OIS drive coil 801 are connected in parallel, the motor further includes a first control component 11 and a second control component 10. The first control component 11 is electrically connected to the first OIS drive coil 9 and the second OIS drive coil 901, respectively, and the second control component 10 is electrically connected to the third OIS drive coil 8 and the fourth OIS drive coil 801, respectively.

[0070] The first control component 11 is used to control the current flow in the first OIS drive coil 9 and the second OIS drive coil 901 so that the first OIS drive coil 9 and the second OIS drive coil 901 move in the same direction.

[0071] The second control unit 10 is used to control the current flow in the third OIS drive coil 8 and the fourth OIS drive coil 801 so that the third OIS drive coil 8 and the fourth OIS drive coil 801 move in the same direction.

[0072] The first control component 11 and the second control component 10 can also be disposed on the first electrical connector 7, and both the first control component 11 and the second control component 10 can be integrated circuits (ICs). Therefore, the first control component 11 can be referred to as OIS X IC, and the second control component 10 can be referred to as OISY IC.

[0073] In the case where the first OIS drive coil 9 and the second OIS drive coil 901 are connected in parallel, and the third OIS drive coil 8 and the fourth OIS drive coil 801 are connected in parallel, a first control component 11 and a second control component 10 can be additionally provided. The current flow in the drive coil can be controlled according to the first control component 11 and the second control component 10. At the same time, the current flow can be adjusted according to the routing and winding direction of the drive coil, so that the movement direction of the first OIS drive coil 9 and the second OIS drive coil 901 is the same, and the movement direction of the third OIS drive coil 8 and the fourth OIS drive coil 801 is the same. Specifically, the driving force on the first OIS drive coil 9 and the second OIS drive coil 901 can be in the same direction, and the driving force on the third OIS drive coil 8 and the fourth OIS drive coil 801 can be in the same direction.

[0074] In this embodiment of the application, when the first OIS drive coil 9 and the second OIS drive coil 901 are connected in parallel, and the third OIS drive coil 8 and the fourth OIS drive coil 801 are connected in parallel, the first control component 11 can control the current flow in the first OIS drive coil 9 and the second OIS drive coil 901 to make the movement directions of the first OIS drive coil 9 and the second OIS drive coil 901 the same; the second control component 10 can control the current flow in the third OIS drive coil 8 and the fourth OIS drive coil 801 to make the movement directions of the third OIS drive coil 8 and the fourth OIS drive coil 801 the same. This allows... The driving forces applied to the first OIS driving coil 9 and the second OIS driving coil 901 are in the same direction, and the driving forces applied to the third OIS driving coil 8 and the fourth OIS driving coil 801 are in the same direction. This increases the driving forces applied to the first OIS driving coil 9 and the second OIS driving coil 901, as well as the driving forces applied to the third OIS driving coil 8 and the fourth OIS driving coil 801. This avoids the driving forces applied to the first OIS driving coil 9 and the second OIS driving coil 901 being in opposite directions, which would cause the driving forces to cancel each other out. It also avoids the driving forces applied to the third OIS driving coil 8 and the fourth OIS driving coil 801 being in opposite directions, which would cause the driving forces to cancel each other out.

[0075] As an optional implementation method, see [link to implementation details]. Figure 11 The motor AF assembly 200 also includes an AF carrier 17, the AF coil 15 is fixedly connected to the AF carrier 17, and the AF carrier 17 is connected to the OIS assembly 201. When the AF coil 15 is energized, under the driving action of the first driving magnet 20, the AF carrier 17 drives the AF coil 15 to move in a first direction, which is the direction of the line connecting the first fixing member 1 and the base assembly 300.

[0076] The aforementioned AF carrier 17 can be referred to as the AF carrier. Optionally, the motor AF assembly 200 may also include a conductive spring 18, which can be electrically connected to the AF carrier 17, thereby enhancing the conductivity of the AF carrier 17.

[0077] The first direction is the direction of the line connecting the first fixing member 1 and the base assembly 300, and the first direction can also be referred to as the Z direction.

[0078] In this embodiment of the application, under the driving action of the first driving magnet 20, the AF carrier 17 drives the AF coil 15 to move in the first direction, thereby realizing the autofocus function.

[0079] It should be noted that, optionally, the OIS cover 3 can be assembled and fastened onto the AF carrier 17 (i.e., the AF carrier), mainly to limit the vertical movement of the OIS coil 202; while the OIS coil 202, the first control component 11 and the second control component 10 can be led out through the first electrical connector 7 (i.e., the OIS FPC), and then connected to the second electrical connector 16 (i.e., the OIS FPC1) by welding, and finally guided to the elastic connector 21 (i.e., the AF FPC) through the metal insert in the AF carrier 17 (i.e., the AF carrier).

[0080] Optionally, see Figure 7 The side of the lens holder 4 can be used as the OIS mechanical limiting surface 401. The positional distance between the mechanical limiting surface 401 and the AF carrier 17 is the OIS mechanical displacement stroke.

[0081] Optionally, see Figure 7The bottom surface of the lens holder 4 can be provided with a V-shaped ball groove 402, and the direction of the ball groove 402 is parallel to the X-axis and Y-axis respectively. The AF carrier 17 can be provided with a flat-bottomed ball groove structure at the position corresponding to the ball groove on the lens holder 4. OIS balls 19 can also be provided in the ball groove 402 to realize the movement of the OIS component. The OIS balls 19 can also support the second actuator.

[0082] Optionally, see Figure 8 The second electrical connector 16 (i.e., OIS FPC1) is welded to the first electrical connector 7 through the FPC inter-pad 161 to achieve conductivity. The second electrical connector 16 is welded to the insert 162 in the AF carrier 17 to conduct the circuit to the elastic connector 21 (i.e., AF FPC). The string part of the second electrical connector 16 can meet the elastic deformation requirements to ensure the smooth movement of the OIS moving parts.

[0083] It should be noted that the above-mentioned insert can be understood as being made by using a one-piece molding process to produce metal and plastic parts. In this way, the resulting insert includes a conductive metal part and an insulating plastic shell part. The main function of the metal part is to reinforce the structure and conduct the circuit.

[0084] Optionally, the materials of the aforementioned metal parts may include at least one of the following: cold-rolled ordinary carbon steel (SteelPlate Cold commercial, SPCC) or ferritic stainless steel (Steel Use Stainless, SUS430). The plastic parts may include: liquid-crystal polymer (LCP), and the LCP model may include VL96LP or CM529BP, etc. The process of processing the metal parts and plastic parts into one piece can be understood as follows: the pre-stamped metal parts are precisely placed in the positioning structure of the injection mold, and then molten plastic is injected. When the plastic cools and shrinks, it will cause mechanical interlocking and clamping of the metal parts, so that the metal parts and plastic parts directly become a single one-piece molded part, thereby eliminating the need for subsequent assembly, gluing, and riveting processes, and enhancing the connection strength between the metal parts and plastic parts.

[0085] As an optional implementation method, see [link to implementation details]. Figure 11The motor AF assembly 200 further includes a first adsorption magnet 6 and a second adsorption magnet 5. The first adsorption magnet 6 and the second adsorption magnet 5 are respectively disposed at two diagonal positions of the AF carrier 17. The number of the first driving magnets 20 is two, and the two first driving magnets 20 are disposed in a one-to-one correspondence with the first adsorption magnet 6 and the second adsorption magnet 5.

[0086] When the AF carrier 17 drives the AF coil 15 to move in the first direction, there is a first attraction force between the first adsorption magnet 6 and the corresponding first driving magnet 20, and there is a second attraction force between the second adsorption magnet 5 and the corresponding first driving magnet 20. The first attraction force and the second attraction force are used to keep the movement trajectory of the AF carrier 17 in the first direction.

[0087] Since the first adsorption magnet 6 and the second adsorption magnet 5 are respectively disposed at two diagonal positions of the AF carrier 17, adsorption forces exist at both diagonal positions of the AF carrier 17. (See [reference]). Figure 12 The direction of the adsorption force can be seen in A1, which makes the movement trajectory of the AF carrier 17 more stable in the first direction.

[0088] For example, when the motor AF assembly 200 also includes a first ball structure 12 and a second ball structure 121, the first adsorption magnet 6 and the second adsorption magnet 5 will be subjected to the positive attraction of the corresponding first driving magnet 20, which will drive the entire AF carrier 17 to press and abut against the balls (i.e. the first ball structure 12 and the second ball structure 121) at a 45-degree angle downward, ensuring that the entire AF carrier 17 will not have a large tilt during the Z-direction (i.e. the first direction) movement.

[0089] In this embodiment, when the AF carrier 17 drives the AF coil 15 to move in the first direction, there is a first attraction force between the first adsorption magnet 6 and the corresponding first driving magnet 20, and there is a second attraction force between the second adsorption magnet 5 and the corresponding first driving magnet 20. The first and second attraction forces are used to keep the movement trajectory of the AF carrier 17 in the first direction, thereby preventing the phenomenon of the movement trajectory of the AF carrier 17 deviating from the first direction, avoiding the phenomenon of the AF carrier 17 derailing, enhancing the anti-overturning ability of the AF carrier 17, and thus enabling the AF carrier 17 to better realize the autofocus function.

[0090] As an optional implementation method, see [link to implementation details]. Figure 12The AF carrier 17 is also provided with a first ball groove 171 and a second ball groove 172. The motor AF assembly 200 also includes a first ball structure 12 and a second ball structure 121. The first ball structure 12 passes through the first ball groove 171, and the second ball structure 121 passes through the second ball groove 172.

[0091] When the AF carrier 17 drives the AF coil 15 to move in the first direction, the first ball groove 171 moves along the first ball structure 12, and the second ball groove 172 moves along the second ball structure 121.

[0092] It should be noted that the cross-sectional shapes of the first ball groove 171 and the second ball groove 172, as well as the derailment directions of the first ball groove 171 and the second ball groove 172, are not limited here. Optionally, when the cross-sectional shape of the first ball groove 171 and the second ball groove 172 is U-shaped, the size of the U-shaped groove can be 1*1mm; when the cross-sectional shape of the first ball groove 171 and the second ball groove 172 is V-shaped, the size of the V-shaped groove can be 1.28*1.32mm. The derailment directions of the first ball groove 171 and the second ball groove 172 can both be at an upward 45-degree angle, as can be seen in [reference needed]. Figure 12 The direction A2 is shown in the diagram.

[0093] In this embodiment, when the AF carrier 17 drives the AF coil 15 to move in the first direction, the first ball groove 171 moves along the first ball structure 12, and the second ball groove 172 moves along the second ball structure 121. This enhances the supporting, limiting, and guiding effects when the AF carrier 17 drives the AF coil 15 to move in the first direction.

[0094] As an optional implementation, the first ball structure 12 includes a plurality of balls connected in sequence, wherein the size of the balls located at the edge positions is larger than the size of the balls located at the middle positions; and / or,

[0095] The second ball structure 121 includes a plurality of balls connected in sequence, and the size of the balls located at the edge position is larger than the size of the balls located in the middle position.

[0096] It should be noted that, optionally, the first ball structure 12 and the second ball structure 121 adopt a diagonal ball structure, that is, the first ball structure 12 and the second ball structure 121 can be located at two diagonal positions on the AF carrier 17, and the number of balls included in the first ball structure 12 and the second ball structure 121 is not limited here. For example, one of the first ball structure 12 and the second ball structure 121 may include 3 balls, and the other may include 2 balls; or, one of the first ball structure 12 and the second ball structure 121 may include 4 balls, and the other may include 3 balls.

[0097] For example, when the first ball structure 12 includes 3 balls, the diameter of the upper and lower balls (i.e., the balls located at the edge) can be 1.0 mm, and the diameter of the middle ball (i.e., the ball located in the middle position) can be 0.9 mm; similarly, when the second ball structure 121 includes 3 balls, the diameter of the upper and lower balls (i.e., the balls located at the edge) can also be 1.0 mm, and the diameter of the middle ball (i.e., the ball located in the middle position) can also be 0.9 mm.

[0098] Optionally, see Figure 12 The first fixing member 1 can also be provided with a ball limiting boss 120, which can be obtained by integral molding of the insert part. In this way, it can be ensured that the ball will not fall out due to the increase of stroke during the Z-axis movement.

[0099] In this embodiment, since the size of the ball located at the edge position is larger than the size of the ball located in the middle position, the limiting effect on the AF carrier 17 can be enhanced, thereby further preventing the AF carrier 17 from derailing.

[0100] As an optional implementation method, see [link to implementation details]. Figure 11 The motor AF assembly 200 also includes an elastic connector 21, one end of which is fixedly connected to the AF carrier 17, and the other end of which is fixedly connected to the base assembly 300.

[0101] Among them, the elastic connector 21 can also be referred to as the motion elastic lever arm.

[0102] In this embodiment, since one end of the elastic connector 21 is fixedly connected to the AF carrier 17 and the other end is fixedly connected to the base assembly 300, when the AF carrier 17 moves in the first direction (i.e., away from the base assembly 300), the elastic connector 21 deforms. Then, under the action of the elastic connector 21's recovery deformation, it can drive the AF carrier 17 to move closer to the base assembly 300, thereby returning the AF carrier 17 to its initial position, thus enhancing the reset driving effect on the AF carrier 17. In other words, the elastic connector 21 achieves the function of elastic deformation and extension of the AF carrier 17 during movement.

[0103] As an optional implementation method, see [link to implementation details]. Figure 9 The base assembly 300 includes a base 25, and a position detection element is also provided on the base 25. The position detection element is used to detect the position information of the AF carrier 17.

[0104] The specific type of position detection device is not limited here. Optionally, the position detection device may include at least one of the following: AF sensing magnet 22 and AF IC 24, whereby AF IC 24 may also be referred to as a magnetic flux detection device. Both AF sensing magnet 22 and AF IC 24 can be used to detect the position information of AF carrier 17 and can be used to control the position of the lens of the camera module.

[0105] For example, when the position detection device includes AF IC24, and the AF carrier 17 is moving in the first direction, the magnetic flux detection device can detect the change in the position information of the AF carrier 17 by sensing the change in magnetic flux, and finally realize the closed-loop control and debugging of the AF carrier 17 based on the change in position information.

[0106] In this embodiment of the application, by setting a position detection component, the position information of the AF carrier 17 can be detected in real time, thereby accurately controlling the position of the lens of the camera module, that is, accurately controlling the travel of the lens.

[0107] It should be noted that, optionally, the base assembly 300 may also include an electrical connection board 23, which may be referred to as an AF printed circuit board (PCB). That is, the electrical connection board 23, the base 25, and the position detection component may constitute the base assembly 300. The base 25 may be referred to as a housing or motor base, and the position detection component may be referred to as an AF IC. The electrical connection board 23 is used to provide the circuit structure and pin output. The base 25 can be understood as being used to fix the first fixing component 1, the first driving magnet 20, and the second driving magnet 110, etc., and can also be used to protect against dust. The insert in the base 25 can be used to realize circuit conduction.

[0108] For example: see Figure 10 The base 25 has diagonally arranged AF ball bearing support grooves 251 and a Z-axis moving part limiting impact surface 252. The base 25 is made of plastic and has injection-molded metal inserts inside for circuit conduction. The electrical connection board 23 has 6 pads, which can be soldered to corresponding pads on the elastic connector 21 (i.e., AF FPC) for OIS circuit output. The position detection component (i.e., AF IC) is set on the electrical connection board 23 (i.e., AF FPCB) and has a connection circuit designed to achieve conduction with the electrical connection board 23 (i.e., AF FPCB). The OIS's serial data line (SDA), serial clock line (SCL), source-drain supply voltage (VDD), and reference ground (GND) are soldered to four pads. The circuit is exported via insert 253 in base 25. AF coil 15 out1 and out2 are each soldered to two pads. The circuit is then exported via insert 253 in base 25 to the soldering positions of pins 231 corresponding to out1 and out2 of AF coil 15 on electrical connection board 23. The internal circuitry of electrical connection board 23 connects the pins corresponding to out1 and out2 of AF coil 15 to the position detection component (i.e., AF IC), thus achieving the purpose of the position detection component (i.e., AF IC) controlling the movement of AF coil 15. It should be noted that... (See also...) Figure 10 The electrical connection plate 23 may also be provided with an AF pin 232 and an OIS pin 233. The AF pin 232 can be used to electrically connect with the AF carrier 17, and the OIS pin 233 can be used to electrically connect with the OIS coil 202.

[0109] Optionally, see Figure 13 and Figure 14 The elastic connector 21 (i.e., AF FPC) is provided with conductive circuits. The AF carrier pad 211 is soldered to the insert circuit 215 in the AF carrier 17 to realize the OIS circuit conduction function. The AF coil is soldered to the insert of the AF carrier 17 through the winding and solder ball soldering structure 212 and the spring piece 213 to realize the coil conduction. The base fixing end pad (housing insert) 214 is soldered to the pad on the elastic connector 21 to lead out the OIS circuit, that is, the housing insert realizes the OIS conduction function.

[0110] Optionally, such as Figure 17 As shown, the first OIS driving coil 9 and the second OIS driving coil 901 are connected in series, and the currents flowing through the driving coils are in opposite directions (according to the right-hand rule, the first OIS driving coil 9 and the second OIS driving coil 901 generate forces in the same direction under the constant magnetic field of the OIS magnet; the direction of the coil current can also be adjusted according to the direction of the constant magnetic field and the right-hand rule so that the two coils, the first OIS driving coil 9 and the second OIS driving coil 901, generate forces in the same direction); the third OIS driving coil 8 and the fourth OIS driving coil 801 are connected in the same way.

[0111] When there are two ICs (i.e., the first control unit 11 and the second control unit 10) in both the X and Y directions, they are led out through the FPC circuit; for example... Figure 16 As shown, the X-direction IC (GND, VDD, SDA, SCL) and the Y-direction IC (GND, VDD, SDA, SCL) are connected in opposite directions, reducing the 8-pin output to 4-pin. The second electrical connector 16 (i.e., OIS FPC1) outputs two circuits at each end; where out1 and out2 are connected to the two ends of the coil respectively, and no longer need to be derived by a separate circuit.

[0112] The OIS circuit is connected to the second electrical connector 16 (OIS FPC) via the first electrical connector 7 (OIS FPC) through soldering. It is then soldered to the metal insert in the AF carrier 17, and finally to the elastic connector 21 (AF FPC) to establish circuit continuity. Figure 18 and Figure 19 (as shown)

[0113] The flexible connector 21 (i.e., AF FPC) is soldered to the metal insert in the base 25 via pads, directly leading out the OIS pin 233. The circuits at the out1 and out2 terminals of the AF coil 15 are soldered to the metal insert in the base 25 via pads, and then soldered to the electrical connection board 23. This connects the circuit of the AF coil 15 to the circuit in the electrical connection board 23, ultimately leading directly out the AF pin 232 through the electrical connection board 23. Figure 20 and Figure 21 As shown.

[0114] Optionally, this application embodiment also provides an electronic device, which includes the camera module in the above embodiments. Since the electronic device in this application embodiment includes the camera module in the above embodiments, it has the same beneficial technical effects as the above embodiments, and the specific structure of the camera module will not be described in detail here.

[0115] The above description represents the preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles described in this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A camera module, characterized in that, include: The system comprises a magnet fixing assembly, a motor autofocus (AF) assembly, and a base assembly. The motor AF assembly includes an optical image stabilization (OIS) assembly and an AF coil connected to each other. The OIS assembly includes an OIS coil. The magnet fixing assembly includes a first driving magnet, a second driving magnet, and a first fixing member. The first driving magnet and the second driving magnet are both fixedly mounted on the first fixing member. The first driving magnet is used to drive the AF coil to move, and the second driving magnet is used to drive the OIS coil to move. The first fixing member is mounted on the base assembly. Both the AF coil and the OIS coil are movable coils.

2. The camera module according to claim 1, characterized in that, The number of the first driving magnets is multiple, and the multiple first driving magnets are respectively located on different edges of the first fixing member; and / or, The number of the second driving magnets is multiple, and the first fixing member has a first through hole, with the multiple second driving magnets located on different inner walls of the first through hole.

3. The camera module according to claim 2, characterized in that, A bent magnetic yoke is provided on the inner wall of the first through hole, and the second driving magnet is fixedly connected to the magnetic yoke.

4. The camera module according to claim 1, characterized in that, The optical image stabilization (OIS) component further includes a first electrical connector. The OIS coil includes a first OIS drive coil, a second OIS drive coil, a third OIS drive coil, and a fourth OIS drive coil. The first OIS drive coil and the second OIS drive coil are respectively fixedly connected to a first sidewall and a second sidewall that are opposite to each other on the first electrical connector. The third OIS drive coil and the fourth OIS drive coil are respectively fixedly connected to a third sidewall and a fourth sidewall that are opposite to each other on the first electrical connector. The third sidewall is connected to the first sidewall and the second sidewall, and the fourth sidewall is connected to the first sidewall and the second sidewall. The driving force exerted by the second driving magnet on the first OIS driving coil, the second OIS driving coil, the third OIS driving coil, and the fourth OIS driving coil is in the same direction.

5. The camera module according to claim 4, characterized in that, The first OIS driving coil and the second OIS driving coil are connected in series, or the first OIS driving coil and the second OIS driving coil are connected in parallel. The third OIS driving coil and the fourth OIS driving coil are connected in series, or the third OIS driving coil and the fourth OIS driving coil are connected in parallel.

6. The camera module according to claim 5, characterized in that, When the first OIS drive coil and the second OIS drive coil are connected in parallel, and the third OIS drive coil and the fourth OIS drive coil are connected in parallel, the motor further includes a first control component and a second control component. The first control component is electrically connected to the first OIS drive coil and the second OIS drive coil, respectively, and the second control component is electrically connected to the third OIS drive coil and the fourth OIS drive coil, respectively. The first control component is used to control the current flow in the first OIS drive coil and the second OIS drive coil so that the first OIS drive coil and the second OIS drive coil move in the same direction. The second control component is used to control the current flow in the third OIS drive coil and the fourth OIS drive coil so that the third OIS drive coil and the fourth OIS drive coil move in the same direction.

7. The camera module according to any one of claims 1 to 6, characterized in that, The motor AF assembly also includes an AF carrier, the AF coil is fixedly connected to the AF carrier, and the AF carrier is connected to the OIS assembly. When the AF coil is energized, under the driving action of the first driving magnet, the AF carrier drives the AF coil to move in a first direction, which is the direction of the connection between the first fixing member and the base assembly.

8. The camera module according to claim 7, characterized in that, The motor AF assembly further includes a first adsorption magnet and a second adsorption magnet. The first adsorption magnet and the second adsorption magnet are respectively disposed at two diagonal positions on the AF carrier. There are two first driving magnets, and the two first driving magnets are disposed in a one-to-one correspondence with the first adsorption magnet and the second adsorption magnet. When the AF carrier drives the AF coil to move in the first direction, there is a first attraction force between the first adsorption magnet and the corresponding first driving magnet, and there is a second attraction force between the second adsorption magnet and the corresponding first driving magnet. The first attraction force and the second attraction force are used to keep the movement trajectory of the AF carrier in the first direction.

9. The camera module according to claim 7, characterized in that, The AF carrier is also provided with a first ball groove and a second ball groove. The motor AF assembly also includes a first ball structure and a second ball structure. The first ball structure passes through the first ball groove, and the second ball structure passes through the second ball groove. When the AF carrier drives the AF coil to move in the first direction, the first ball groove moves along the first ball structure, and the second ball groove moves along the second ball structure.

10. An electronic device, characterized in that, Includes the camera module according to any one of claims 1 to 9.

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