Camera module and manufacturing method thereof

Abstract

The invention provides a camera module and a manufacturing method thereof, the camera module comprises an optical module, a movable component, a coil assembly and a magnet, the optical module is installed on the movable component, one of the coil assembly and the magnet is installed on the movable component and located on at least one side of the optical module, and the coil assembly and the magnet interact to generate driving force to drive the optical module to move. Driving the movable member to bear the optical module to move; the magnet comprises a first part and a second part, and polarity parts with different polarities are formed on the sides, facing the coil assembly, of the first part and the second part respectively. The coil component comprises a substrate and coil patterns formed on the substrate, and the coil patterns comprise a first coil pattern extending in a first direction and a second coil pattern extending in a second direction perpendicular to the first direction; wherein the extending direction of the first coil pattern is parallel to the arrangement direction of the first part and the second part, and the width of the first coil pattern is larger than that of the second coil pattern.

Description

Technical Field

[0001] This application relates to the field of camera modules, and more particularly to camera modules and manufacturing methods thereof. Background Art

[0002] Camera modules are an essential part of mobile electronic devices. With the further development of camera module technology, users' requirements for camera modules have become increasingly refined and more demanding. The development of camera products not only needs to meet the requirements of high performance but also needs to meet the requirements of miniaturization and portability.

[0003] A camera module includes a lens module, a motor, and a photosensitive module. Light passes through the lens module and reaches the photosensitive component, where it is received by the photosensitive chip of the photosensitive module. The motor is used to drive optical modules such as the lens module or the photosensitive module.

[0004] To further improve the imaging quality and achieve more imaging functions, camera modules usually have an auto-focus function (AF function) and an optical image stabilization function (Optical Image Stabilization, OIS function). The motor drives the optical module to achieve the above functions. The most common form of the motor is a voice coil motor. The voice coil motor generates a driving force through the interaction between a magnet and a coil. The performance of the coil and the magnet affects the overall performance of the motor. Taking the coil as an example, the line width, thickness, number of winding turns, etc. of the coil affect the performance of the coil. When energized, the coil will heat up. The resistance value of the coil affects the degree of heating, and the degree of heating in turn affects the power consumption of the motor. It is necessary to reasonably design the coil to ensure the performance of the coil and at the same time minimize the resistance to reduce the power consumption of the motor.

[0005] Currently, the coil design of the voice coil motors used in camera modules is mainly based on a wiring method with a uniform width. The line width of the coil is the same at any position, and the coil traces usually have a uniform width, thickness, and spacing, which simplifies the coil design but cannot provide the best performance.

[0006] The resistance of the coil is inversely proportional to the cross-sectional area of the coil. Therefore, it is considered to increase the cross-sectional area of the coil, such as changing the line width in a spiral manner to increase the cross-sectional area of the coil. However, this method will greatly increase the size of the coil. Currently, the requirements for miniaturization of camera modules are getting higher and higher, and the space occupied in electronic devices is very limited. Terminal manufacturers have very strict requirements on the size of camera modules. Therefore, overly increasing the size of the coil will make it difficult for the overall size of the camera module to meet the design requirements of miniaturization. Summary of the Invention

[0007] One advantage of the present application is to provide an imaging module and a manufacturing method thereof. By increasing the local area of the coil assembly of the actuator, the resistance of the coil assembly is reduced, the power consumption of the actuator is decreased, and the quality of the imaging module is improved.

[0008] One advantage of the present application is to provide an imaging module and a manufacturing method thereof. The local line width in each turn of the coil pattern unit is increased to increase the cross-sectional area of the coil assembly, thereby reducing the resistance value of the coil assembly and the degree of heat generation of the coil assembly.

[0009] One advantage of the present application is to provide an imaging module and a manufacturing method thereof. Only the local line width in each turn of the coil pattern unit is increased, avoiding the overall volume of the coil assembly from being too large, meeting the design requirements of the miniaturization of the imaging module.

[0010] One advantage of the present application is to provide an imaging module and a manufacturing method thereof. The coil pattern is formed by printing on the substrate, and a coil pattern shape with different local line widths can be formed according to a preset coil pattern, which can effectively reduce the resistance of the coil assembly and improve the performance of the coil assembly.

[0011] One advantage of the present application is to provide an imaging module and a manufacturing method thereof. The coil assembly is mounted on the printed circuit board, so that the printed circuit board integrates the coil assembly.

[0012] One advantage of the present application is to provide an imaging module and a manufacturing method thereof. By increasing the line width of the coil pattern in the part of each turn of the coil pattern unit that does not affect the driving force of the actuator, the driving performance of the actuator is avoided from being affected, and the quality is improved.

[0013] According to one aspect of the present application, the present application provides an imaging module, including:

[0014] An optical module, a movable member, a coil assembly, and a magnet. The optical module is mounted on the movable member, and one of the coil assembly and the magnet is mounted on the movable member, at least on one side of the optical module. The coil assembly and the magnet interact to generate a driving force to drive the movable member to carry the optical module to move;

[0015] The magnet includes a first part and a second part, and polar parts with different polarities are respectively formed on the sides of the first part and the second part facing the coil assembly;

[0016] The coil assembly includes a substrate and a coil pattern formed on the substrate. The coil pattern includes a first coil pattern extending in a first direction and a second coil pattern extending in a second direction perpendicular to the first direction;

[0017] Among them, the extending direction of the first coil pattern is parallel to the arranging direction of the first part and the second part, and the width of the first coil pattern is greater than the width of the second coil pattern.

[0018] According to an example of the present application, at least a part of the first coil pattern protrudes relative to the magnet in a second direction.

[0019] According to an example of the present application, the first coil pattern faces the first part and the second part.

[0020] According to an example of the present application, the coil pattern includes a plurality of coil pattern units, and each coil pattern unit includes a first coil pattern unit extending in a first direction and a second coil pattern unit extending in a second direction, and the width of the first coil pattern unit is greater than the width of the second coil pattern.

[0021] According to an example of the present application, the first coil pattern unit includes a plurality of coil units connected in parallel.

[0022] According to an example of the present application, the gaps between the coil pattern units are the same, and the gaps between the first coil pattern units and the second coil pattern units are the same.

[0023] According to an example of the present application, the distances from the first coil pattern and the second coil pattern to the edge of the substrate are the same.

[0024] According to an example of the present application, it further includes a printed circuit board, and the coil assembly is welded to the printed circuit board, wherein the substrate is provided with at least one welding area for fixedly connecting with the printed circuit board.

[0025] According to an example of the present application, it further includes a fixing member, the movable member is movably assembled to the fixing member, and the other of the coil assembly and the magnet is installed on the fixing member.

[0026] According to an example of the present application, the optical module is an optical path turning module, the coil assembly and the magnet are installed on both sides of the optical path turning module, the extending direction of the first coil pattern is parallel to the light emitting direction of the optical path turning module, the extending direction of the second coil pattern is parallel to the light incident direction of the optical path turning module, the magnet and the coil assembly interact to generate a driving force parallel to the light emitting direction, and drive the optical path turning module to rotate around a first rotation axis, and the first rotation axis is parallel to the light incident direction.

[0027] According to an example of the present application, the movable member includes a first movable member, a second movable member, and a guiding member. The first movable member and the second movable member are mounted on the fixed member along a second direction. The guiding member is mounted between the first movable member and the second movable member to guide the movement of the first movable member. Wherein, the imaging module further includes a second coil assembly and a second magnet. The second coil assembly and the second magnet are mounted on the fixed member and the first movable member along a first direction to drive the first movable member to rotate around a second rotation axis.

[0028] According to an example of the present application, the second movable member is mounted on the bottom of the first movable member along the second direction. The second movable member includes two support arms extending along the second direction and opposite to each other along a third direction. The support arms extend to opposite sides of the first movable member along the third direction. The guiding member is assembled in a second receiving groove defined by the top ends of the support arms. The center point of the guiding member is located on the second rotation axis.

[0029] According to an example of the present application, the magnet includes a first part and a second part. There is a spaced space between the first part and the second part. The support arm is located in the spaced space. The parts of the first part and the second part facing the coil assembly form polar parts with opposite polarities.

[0030] According to an example of the present application, a first movable assembly space and a second movable assembly space are provided on the side of the first movable member. The first part and the second part are respectively assembled in the first movable assembly space and the second movable assembly space. A receiving portion is provided between the first movable assembly space and the second movable assembly space. The receiving portion is provided with a first sub-receiving groove and a second sub-receiving groove along the second direction. At least a part of the guiding member is received in the first sub-receiving groove, and the support arm extends into the second sub-receiving groove.

[0031] According to an example of the present application, the optical module is a lens module. The coil assembly and the magnet are disposed on at least one side of the lens module and interact to generate a driving force parallel to the optical axis direction of the lens module. Wherein, the extending direction of the first coil pattern is parallel to the optical axis of the lens module.

[0032] According to another aspect of the present application, the present application further provides a manufacturing method of the imaging module, including the following steps:

[0033] Provide a substrate with a coil pattern, the coil pattern including a first coil pattern extending in a first direction and a second coil pattern extending in a second direction perpendicular to the first direction, the width of the first coil pattern being greater than the width of the second coil pattern;

[0034] Weld the coil assembly formed by the coil pattern and the substrate to a printed circuit board;

[0035] Mount one of the coil assembly and the magnet to a movable member and the other to a fixed member;

[0036] Wherein, the magnet includes a first part and a second part, the first part and the second part respectively forming polar parts with different polarities on one side facing the coil assembly, and the first part and the second part are arranged along the first direction. Description of the Drawings

[0037] Figure 1A It is a schematic diagram of a coil assembly according to some examples of a camera module of the present application.

[0038] Figure 1B It is a schematic diagram of the interaction between a coil assembly and a magnet according to some examples of a camera module of the present application.

[0039] Figure 1C It is a cross-sectional schematic diagram of a coil assembly according to some examples of a camera module of the present application.

[0040] Figure 2A It is a schematic diagram of an implementation manner of a coil assembly according to some examples of a camera module of the present application.

[0041] Figure 2B It is a schematic diagram of another implementation manner of a coil assembly according to some examples of a camera module of the present application.

[0042] Figure 3A It is a schematic diagram of an example in which an actuator according to the present application is applied to drive an optical path turning module of a periscope camera module.

[0043] Figure 3B It is a schematic diagram of the structure of an example in which an actuator according to the present application is applied to drive an optical path turning module of a periscope camera module.

[0044] Figure 4A It is a partial structure explosion schematic diagram of an example in which an actuator according to the present application is applied to drive an optical path turning module of a periscope camera module.

[0045] Figure 4B It is a schematic diagram of the interaction between a coil assembly and a magnet of an example in which an actuator according to the present application is applied to drive an optical path turning module of a periscope camera module.

[0046] Figure 5A is a schematic diagram briefly showing an example in which the actuator according to the present application is applied to drive a lens module in a periscope camera module.

[0047] Figure 5B is a schematic diagram briefly showing a coil assembly and a magnet in an example in which the actuator according to the present application is applied to drive a lens module in a periscope camera module.

[0048] Figure 5C is a schematic diagram showing the interaction between a coil assembly and a magnet in an example in which the actuator according to the present application is applied to drive a lens module in a periscope camera module.

[0049] Figure 6A and Figure 6B is a schematic diagram briefly showing a coil assembly mounted on a printed circuit board in some examples of the camera module according to the present application.

[0050] Figure 7 is a schematic diagram briefly showing a coil assembly in some examples of the camera module according to the present application. Detailed Embodiments

[0051] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present invention can be applied to other embodiments, variations, improvements, equivalent solutions, and other technical solutions without departing from the spirit and scope of the present invention.

[0052] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present invention.

[0053] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the number.

[0054] The present application provides an actuator and an imaging module using the actuator. The width of the partial coil pattern of the coil assembly of the actuator is increased to reduce the resistance of the coil assembly, reduce the function of the actuator, and improve the performance. Among them, the width of the coil pattern is increased locally for each coil pattern unit of the coil assembly, while avoiding an overly large overall size of the coil assembly, meeting the design requirements for miniaturization of the imaging module, and being able to improve the quality of the imaging module. Combining with the schematic diagram in the attached Figures 1A to 7 description, the implementation manner and advantages of the imaging module of the present application are elaborated.

[0055] Referring to Figures 1A to 1C , the actuator includes a coil assembly 10 and a magnet 20. The magnet 20 and the coil assembly 10 are opposite to each other. After an electric current is passed through the coil assembly 10, it interacts with the magnetic field of the magnet 20 to generate a driving force F. The magnet 20 and the coil assembly 10 can generate a driving force in the vertical direction of the direction facing each other.

[0056] As Figure 1A shown, the coil assembly 10 includes a coil pattern 101 and a substrate 102.

[0057] In one implementation manner, a coil pattern 101 with electrical conductivity is formed on the insulating base layer of the substrate 102 according to a preset pattern.

[0058] The coil pattern 101 includes a first coil pattern 11 extending and distributed along a first direction (X-axis) and a second coil pattern 12 extending and distributed along a second direction (Y-axis). The first direction and the second direction are orthogonal.

[0059] The electric current passed through the coil assembly 10 moves along the coil pattern 101, moves along the X-axis in the first coil pattern 11, and moves along the Y-axis in the second coil pattern 12.

[0060] As Figure 1B shown, the magnet 20 and the coil assembly 10 are opposite to each other along a third direction (Z-axis). The magnetic field direction B of the magnet 20 is perpendicular to the current direction I of the coil pattern 101, that is, the magnetic field direction B of the magnet 20 is perpendicular to the moving charge velocity direction of the coil pattern 101. Further, the moving charge velocity direction of the second coil pattern 12 is perpendicular to the magnetic field direction B of the magnet 20. The second coil pattern 12 and the magnet 20 interact to generate a driving force F perpendicular to the third direction. The driving force F is perpendicular to the plane determined by the moving charge velocity direction of the second coil pattern 12 and the magnetic field direction B of the magnet 20.

[0061] That is to say, the second coil pattern 12 is the part of the coil assembly 10 that participates in the interaction with the magnetic field of the magnet 20 to generate the driving force F. The second coil pattern 12 and the magnetic field 20 are arranged oppositely to interact with each other.

[0062] The resistance value of the coil assembly 10 affects its quality. The lower the resistance value, the higher the quality and the smaller the loss of the coil assembly circuit. The resistance value of the coil assembly 10 is inversely proportional to the cross-sectional area of the coil pattern 101. To reduce the resistance value, it is possible to consider increasing the cross-sectional area of the coil pattern 101, such as increasing the width, thickness, etc. of the coil pattern 101. However, the internal space of the camera module is limited. Increasing the overall width, thickness, etc. of the coil pattern 101 may cause an increase in the overall size and affect other structures. Therefore, referring to Figure 1C , consider increasing the local cross-sectional area of the coil pattern 101 to avoid excessive overall size of the coil assembly 10. Further, if the cross-sectional area of the interacting part between the coil pattern 101 and the magnet is increased, the influence on the movement of the actuator needs to be considered. Therefore, consider increasing the cross-sectional area of the first coil pattern 11 of the coil pattern 101. Among them, the cross-sectional direction is perpendicular to the plane determined by the first direction and the second direction.

[0063] The second coil pattern 12 faces the magnet 20, facing the N-polarity part and the S-polarity part of the magnet 20. The current direction I of the second coil pattern 12 is perpendicular to the magnetic field direction B of the magnet 20 and interacts to generate a driving force F in the vertical direction. The current direction I of the first coil pattern 11 is parallel to the direction of the driving force F. Increasing the cross-sectional area of the first coil pattern 11 has less influence on the driving performance of the actuator.

[0064] Referring to Figure 1B , the width W1 of the first coil pattern 11 is greater than the width W2 of the second coil pattern 11. Among them, the width W1 is the distance in the second direction between the outer side edge E111 and the inner side edge E112 of the first coil pattern 11 extending in the first direction; the width W2 is the distance in the first direction between the outer side edge E121 and the inner side edge E122 of the second coil pattern 12 extending in the second direction.

[0065] When forming the coil pattern 101 on the substrate 102, increase the width at the first coil pattern 11 to reduce the resistance value of the coil assembly 10. Or rather, preset that the width of the first coil pattern 11 is greater than the width of the second coil assembly 12, and form the coil pattern 101 based on this preset. As Figure 1C shown, the cross-sectional area S1 of the first coil pattern 11 is affected by the width W1 and the thickness T1, and the cross-sectional area S2 of the second coil pattern 12 is determined by the width W2 and the thickness T2. When the width W1 > width W2 and the thickness T1 = thickness T2, then the cross-sectional area S1 > cross-sectional area S2. Increasing the width W1 of the first coil pattern 11 makes the cross-sectional area S1 here increase, and thus the resistance value decreases.

[0066] Among them, the first coil pattern 11 and the second coil pattern 12 are formed in the same thickness manner to facilitate printing and forming on the substrate 102. The first coil pattern 11 and the second coil pattern 12 can be a single-layer structure or a multi-layer structure in a third direction (Z-axis) perpendicular to the first direction and the second direction. Further, the thickness of the coil pattern 101 is increased to increase the cross-sectional area and reduce the resistance value.

[0067] Referring to Figure 1B , the coil pattern 101 includes two first coil patterns 11A and 11B extending along the first direction and opposite to each other along the second direction, and two second coil patterns 12A and 12B extending along the second direction and opposite to each other along the first direction.

[0068] The magnet 20 includes a first portion 201 and a second portion 202 distributed along the first direction. The first portion 201 and the second portion 202 respectively face the second coil patterns 12A and 12B arranged opposite to each other along the first direction, and form polarity portions with different polarities respectively facing the second coil patterns 12A and 12B.

[0069] The magnetic field directions of the first portion 201 and the second portion 202 are opposite and extend along the third direction. The current directions of the second coil patterns 12A and 12B are opposite and extend along the second direction, perpendicular to the magnetic field directions of the first portion 201 and the second portion 202. The second coil pattern 12A interacts with the first portion 201, and the second coil pattern 12B interacts with the second portion 202 to generate a driving force F in the same direction along the first direction. Among them, by changing the circuit direction, the direction of the driving force F can be changed.

[0070] The extending direction of the first coil pattern 11 is parallel to the arranging directions of the first portion 201 and the second portion 202. The second coil pattern 12 respectively faces a single polarity portion, and the first coil pattern 11 faces two polarity portions with different polarities of the magnet 20.

[0071] The portions of the first portion 201 and the second portion 202 facing the coil assembly 10 respectively form an N-polarity portion and an S-polarity portion. The first portion 201 and the second portion 202 are implemented as two magnets with opposite magnetization directions to respectively interact with the second coil patterns 12A and 12B with opposite current directions of the coil assembly 10, generating a driving force F in the same direction.

[0072] The first part 201 and the second part 202 are implemented as two parts with opposite magnetization directions, and they can be arranged to be connected to each other or distributed at intervals. Further, the first part 201 and the second part 202 are distributed at a certain spatial interval, or the first part 201 and the second part 202 are distributed with an intervening member. The size of the magnet 20 is determined based on the overall of the first part 201, the second part 202, and the interval between the first part 201 and the second part 202 in the first direction.

[0073] The projection of the magnet 20 in the third direction has a portion protruding in the first direction relative to the projection of the coil pattern 101 in the third direction. The projection of the coil pattern 101 in the third direction has a portion protruding in the second direction relative to the projection of the magnet 20 in the third direction.

[0074] The projection of the second coil pattern 12 in the third direction and the projection of the magnet 20 in the third direction mostly overlap. Further, in some examples, the projection of the second coil pattern 12 in the third direction falls within the projection of the magnet 20 in the third direction. That is, the distance that the second coil pattern 12 extends in the second direction is adapted to the distance that the magnet 20 extends in the second direction. Even further, the distance that the second coil pattern 12 extends in the second direction does not exceed the distance that the magnet 20 extends in the second direction. This enables the second coil pattern 12 to fully participate in the interaction with the magnet 20.

[0075] Among them, the projections of the second coil pattern 12A and the second coil pattern 12B in the third direction respectively fall within the projections of the first part 201 and the second part 202 in the third direction.

[0076] The projection of the first coil pattern 11 in the third direction protrudes in the second direction relative to the projection of the magnet 20 in the third direction. That is, the first coil pattern 11 protrudes a part in the second direction relative to the magnet 20. This makes the design of the first coil pattern 11 have less influence on the driving performance of the actuator.

[0077] In one embodiment, the first coil pattern 11 faces two different polarity portions of the magnet 20 in the third direction, that is, the first coil pattern 11 faces the N-polarity portion and the S-polarity portion of the magnet 20. In this way, there is an overlapping portion between the projection of the first coil pattern 11 and the projection of the magnet 20 in the third direction, and there are overlapping portions at the N-polarity portion and the S-polarity portion of the magnet 20 respectively.

[0078] In one embodiment, the first coil pattern 11 protrudes completely in the second direction relative to the magnet 20, that is, there is no overlapping portion between the projection of the first coil pattern 11 and the projection of the magnet 20 in the third direction.

[0079] Refer to Figure 2A and Figure 2BAs shown in the figure, the coil pattern 101 includes N coil pattern units 1011. Each coil pattern unit 1011 is formed by surrounding one circle, that is, the coil pattern unit 1011 extends one circle around the Z-axis. Each coil pattern unit 1011 includes a first coil pattern unit 111 extending and distributed in the first direction and a second coil pattern unit 121 extending and distributed in the second direction. The first coil pattern unit 111 and the second coil pattern unit 121 are connected end to end and arranged in a circle.

[0080] Furthermore, the coil pattern 101 includes a bending portion 13. The bending portion 13 connects the first coil pattern 11 and the second coil pattern 12. Further, each coil pattern unit 1011 of each circle includes a corresponding bending portion unit 131 to connect the first coil pattern unit 111 and the second coil pattern unit 121.

[0081] Among them, each coil pattern unit 1011 of each circle is connected conductively. In one implementation, after one circle of coil pattern units 1011 is formed, it extends inward or outward by a certain angle from the bending portion 13 and continues to surround one circle to form another circle of coil pattern units 1011, and the remaining coil pattern units 10111 are formed in this way in turn. That is, the coil pattern 101 is formed on the substrate 102 in a spiral form. In one implementation, a conductive connection portion is provided in each coil pattern unit 1011.

[0082] The width W11 of the N first coil pattern units 111 and the gap G1 between each first coil pattern unit 111 form the total width W1 of the first coil pattern 11.

[0083] The width W21 of the N second coil pattern units 121 and the gap G2 between each second coil pattern unit 121 form the total width W2 of the second coil pattern 12.

[0084] In Figure 2A In the example shown, the width W11 of the first coil pattern unit 111 of each coil pattern unit 1011 is greater than the width W21 of the second coil pattern unit 121 to reduce the resistance value of each coil pattern unit 1011, and further reduce the resistance of the coil pattern 101.

[0085] That is, increase the width of each coil pattern unit 1011 that does not participate in interacting with the magnetic field to generate the driving force F, so as to increase the cross-sectional area of the coil pattern 101, reduce the resistance value, and avoid affecting the driving force of the actuator.

[0086] Furthermore, the gap G between each coil pattern unit 1011 is the same. Each coil pattern unit 1011 is distributed at a uniform gap interval to form the coil pattern 101. The gap G1 between each adjacent first coil pattern unit 111 is the same, the gap G2 between each adjacent second coil pattern unit 121 is the same, and G = G1 = G2. The coil pattern 101 having a uniform gap can simplify the design and reduce the forming difficulty of the substrate 102.

[0087] In Figure 2B In the illustrated example, the first coil pattern unit 111 of each coil pattern unit 1011 includes a plurality of first coil units 1111 connected in parallel. The second coil pattern unit 121 includes one second coil unit 1211. The width W11 of the first coil pattern unit 111 formed by the plurality of first coil units 1111 connected in parallel is greater than the width W21 of the second coil pattern unit 121 of the same coil pattern unit 1011.

[0088] That is, in the part of each coil pattern unit 1011 that does not participate in the interaction with the magnetic field to generate the driving force F, parallel-connected coil units are added to form a parallel circuit to reduce the resistance value. This makes the width W1 of the first coil pattern 11 formed by adding the parallel-connected first coil units 1111 greater than the width W2 of the second coil pattern 12.

[0089] Furthermore, the width of the second coil unit 1211 is the width W21 of the second coil pattern unit 121. The width W111 of the first coil unit 1111 is the same as the width W21 of the second coil unit 1211. The gap G11 between each first coil unit 1111 is the same as the gap G1 between each first coil pattern unit, and the same as the gap G2 between each second coil pattern unit 121. That is, the coil pattern 101 has a uniform gap to simplify the design. On this basis, a local parallel circuit is added to effectively reduce the resistance.

[0090] Alternatively, the second coil pattern unit 121 includes a plurality of second coil units 1211, and the number thereof is less than the number of the first coil units 1111 connected in parallel. The width formed by the parallel connection of the plurality of second coil units 1211 is the width W21 of the second coil pattern unit 121. Among them, the width of a single second coil unit 1211 is the same as the width of a single first coil unit 1111, and the width W11 of the first coil pattern unit 111 is greater than the width W21 of the second coil pattern unit 121 of the same coil pattern unit 1011. The finally formed width W1 of the first coil pattern 11 is greater than the width W2 of the second coil pattern 12.

[0091] Figure 3BA brief schematic diagram of an embodiment of the actuator of the present application. The actuator includes a coil assembly 10, a magnet 20, a movable member 30, a fixed member 40, and an optical module. One of the coil assembly 10 and the magnet 20 is assembled to the movable member 30, and the other is assembled to the fixed member 40. They interact to generate a driving force F to drive the movable member 30 to move relative to the fixed member 40. The optical module is installed on the movable member 30 and moves with the movement of the movable member 30. The optical module can be implemented as including but not limited to a lens module, an optical path turning module, a photosensitive chip, etc.

[0092] If the coil assembly 10 is installed on the movable member 30 and the magnet 20 is installed on the fixed member 40, the actuator is of the moving coil type. If the coil assembly 10 is installed on the fixed member 40 and the magnet is installed on the movable member 30, the actuator is of the moving magnet type. The present application does not limit this.

[0093] The movable member 30 is provided with a first assembly space 301 adapted to assemble one of the coil assembly 10 and the magnet 20. The fixed member 40 is provided with a second assembly space 401 adapted to assemble the other of the coil assembly 10 and the magnet 20. The first assembly space 301 and the second assembly space 401 are opposite to each other in the third direction. After assembling the coil assembly 10 and the magnet 20, a driving force in the first direction is generated. The second coil pattern 12 of the coil pattern 101 interacts with the magnet 20 to generate a driving force. The first coil pattern 11 does not participate in the interaction with the magnet 20, and its line width is greater than that of the second coil pattern 12, which can effectively reduce the resistance and improve the quality of the actuator of the present application.

[0094] The actuator of the present application is applied to a camera module and can drive the optical module of the camera module to move. For example, the actuator drives the optical module to move to achieve functions such as optical image stabilization (OIS function), auto focus function (AF function), optical zoom function, etc. Among them, the optical module can be a lens module, an optical path turning module, and / or a photosensitive module. Specifically, taking a periscope camera module as an example, the application of the actuator of the present application in the camera module is described.

[0095] Reference Figures 3A to 4B Referring to the schematic diagram, the actuator of the present application is applied as a moving device for the optical path turning module of a periscope camera module. The actuator includes a coil assembly 10, a magnet 20, a movable member 30, and a fixed member 40. Taking the coil assembly 10 being installed on the fixed member 40 and the magnet 20 being installed on the movable member 30 as an example. In other examples of the present application, the implementation manner in which the coil assembly 10 is installed on the movable member 30 and the magnet 30 is installed on the fixed member 40 is also feasible.

[0096] The actuator further includes an actuated optical module, which in this example is implemented as an optical path turning module 50. The optical path turning module 50 is mounted on the movable member 30. The coil assembly 10 and the magnet 20 interact to generate a driving force F to move the movable member 30 carrying the optical path turning module 50.

[0097] The movable member 30 includes a first movable member 31, a second movable member 32, and a guiding member 33. The first movable member 31 and the second movable member 32 are movably mounted on the fixed member 40. The optical path turning module 50 is mounted on the first movable member 31. The second movable member 32 is mounted between the first movable member 31 and the fixed member 40. The guiding member 33 is mounted between the first movable member 31 and the second movable member 32, and the guiding member 33 guides the movement of the first movable member 31. Among them, the first movable member 31, the guiding member 33, and the second movable member 32 are assembled to the fixed member 40 along the second direction.

[0098] Light is incident on the optical path turning module 50 along the second direction (Y-axis), and after being turned by the optical path turning module 50, it exits along the first direction (X-axis). The lens module and the photosensitive module (not shown in the figure) are sequentially arranged on the exit side of the optical path turning module 50 along the first direction. The light passes through the lens module and reaches the photosensitive module, and an image is formed on the photosensitive area of the photosensitive module.

[0099] The actuator includes a first actuator and a second actuator. The first actuator drives the optical path turning module 50 to rotate around the first rotation axis R1, and the second actuator drives the optical path turning module 50 to rotate around the second rotation axis R2. Among them, the first rotation axis R1 and the second rotation axis R2 are orthogonal. The first rotation axis R1 extends along the Y-axis direction, that is, parallel to the light incident direction, and the second rotation axis R2 extends along the Z-axis direction, that is, orthogonal to the light incident direction and the light exit direction.

[0100] As Figure 3B shown, the second actuator includes a second coil assembly 10A and a second magnet 20A. The second coil assembly 10A and the second magnet 20A are relatively mounted on the movable member 30 and the fixed member 40 along the X-axis direction and interact to drive the optical path turning module 50 to rotate around the second rotation axis R2.

[0101] It can be understood that the implementation manner of the second coil assembly 10A can refer to the implementation manner of the coil assembly 10, and a design with different wire widths can be adopted, or a design with the same wire width or a conventional design can be adopted.

[0102] Among them, the number of the guiding members 33 is implemented as two, which are relatively distributed along the Z-axis direction and are located between the first movable member 31 and the second movable member 32. As Figure 4AAs shown, the second movable member 32 is assembled between the bottom of the first movable member 31 and the bottom of the fixed member 40 in the Y-axis direction, and supports the first movable member 31 in the Y-axis direction. The second movable member 32 includes two support arms 321 that are relatively distributed in the Z-axis direction and extend in the Y-axis direction. Two guiding members 33 are respectively installed in a second accommodation groove 320 defined by the tops of the two support arms 321. The bottom of the first movable member 31 is correspondingly provided with first accommodation grooves 310 that are relatively distributed in the Z-axis direction, which are adapted to accommodate at least a part of the guiding members 33 and the support arms 321. The first accommodation grooves 310 and the second accommodation grooves 320 cooperate with each other to define the movement space of the guiding members 33. When the second coil assembly 10A and the second magnet 20A of the second actuator interact with each other to drive the first movable member 31 to move, the guiding members 33 guide the first movable member 21 to rotate around the second rotation axis R2, realizing the nodding movement of the optical path turning module 50.

[0103] The first actuator includes the aforementioned coil assembly 10 and magnet 20. The coil assembly 10 and the magnet 20 are relatively distributed in the Z-axis direction on two side parts of the movable member 30 and the fixed member 40. That is, second assembly spaces 401 are respectively provided on two side parts of the fixed member 40 in the Z-axis direction, and first assembly spaces 301 are respectively provided on two relatively opposite side parts of the movable member 30 in the Z-axis direction. At least two coil assemblies 10 are relatively assembled on two side parts of the fixed member 40 in the Z-axis direction, and at least two magnets 20 are relatively assembled on two side parts of the movable member in the Z-axis direction.

[0104] The coil assembly 10 includes a coil pattern 101 and a substrate 102. The substrate 102 is at least distributed on two relatively opposite sides of the movable member 30 in the Z-axis direction to form coil patterns 101 that are relatively distributed in the Z-axis direction.

[0105] Specifically, the coil assembly 10 and the magnet 20 distributed on one side of the movable member 30 in the Z-axis direction are described. The implementation manners of the coil assembly 10 and the magnet 20 distributed on the other relatively opposite side of the movable member 30 in the Z-axis direction are the same as this.

[0106] The coil pattern 101 includes a first coil pattern 11 and a second coil pattern 12. The first coil pattern 11 is distributed in a first direction, perpendicular to the light incident direction of the optical path turning module 50 and parallel to the light exit direction of the optical path turning module 50. The second coil pattern 12 is distributed in a second direction, parallel to the light incident direction of the optical path turning module 50 and perpendicular to the light exit direction of the optical path turning module 50. The width W1 of the first coil pattern 11 is greater than the width W2 of the second coil pattern 12. The magnet 20 is arranged in a direction parallel to the plane determined by the light incident direction and the light exit direction of the optical path turning module 50, and the magnet 20 and the coil assembly 10 are opposite in a direction perpendicular to the plane determined by the light incident direction and the light exit direction.

[0107] Reference Figure 4A and Figure 4B As shown in Figure 4A and Figure 4B , the magnet 20 includes a first part 201 and a second part 202. In this example, the first part 201 and the second part 202 are two independent magnets, and there is a spacing space 200 between the first part 201 and the second part 202. The polarities of the parts of the first part 201 and the second part 202 facing the coil assembly 10 are different. For example, an N-polarity part and an S-polarity part are formed respectively. The polarities of the parts of the first part 201 and the second part 202 facing away from the coil assembly 10 are different. For example, an S-polarity part and an N-polarity part are formed respectively.

[0108] The magnetization directions of the first part 201 and the second part 202 are opposite, distributed along the third direction, and perpendicular to the extension distribution direction of the coil pattern 101, so as to be perpendicular to the current direction of the coil pattern 101.

[0109] The coil pattern 101 includes second coil patterns 12A and 12B respectively opposite to the first part 201 and the second part 202, and the second coil patterns 12A and 12B face one polarity part respectively. The coil pattern 101 further includes first coil patterns 11A and 11B, and the first coil patterns 11A and 11B face the first part 201 and the second part 202 respectively, and are respectively opposite to two polarity parts with different polarities of the magnet 20.

[0110] The first part 201 and the second part 202 respectively have lengths extending in the Y-axis direction. The second coil patterns 12A and 12B respectively have lengths extending in the Y-axis direction. The first coil patterns 11A and 11B have lengths extending in the X-axis direction. The extension directions of the first part 201, the second part 202, and the second coil patterns 12A and 12B are parallel to the light incident direction of the optical path turning module 50, and the extension directions of the first coil patterns 11A and 11B are parallel to the light exit direction of the optical path turning module 50.

[0111] A current in one direction is passed through the coil pattern 101, and the current flows along the first coil pattern 11A, the second coil pattern 12B, the first coil pattern 11B, and the second coil pattern 12A. The current directions of the second coil patterns 12A and 12B are opposite, perpendicular to the magnetic field directions of the first part 201 and the second part 202 respectively, and interact to generate a driving force F.

[0112] The driving force F is parallel to the extension direction and the current direction of the first coil patterns 11A and 11B.

[0113] Currents in opposite directions are passed through the coil assemblies 10 distributed on opposite sides of the movable member 30 in the Z-axis direction to generate driving forces in opposite directions, thereby driving the movable member 30 to rotate about the first rotation axis R1, so that the optical path turning module 50 rotates about the first rotation axis R1, realizing the swinging motion of the optical path turning module 50.

[0114] A second guiding member (not shown in the figure) is provided between the second movable member 32 and the fixed member 40. The second guiding member guides the second movable member 32 to rotate about the first rotation axis R1, so that the first movable member 31 carrying the optical path turning module 50 rotates about the first rotation axis R1.

[0115] The fixed member 40 is mounted on the base 60, and the base 60 can serve as a housing and / or a base.

[0116] Refer to Figure 4A As shown in the schematic diagram, there is an interval space 200 between the first part 201 and the second part 202. The movable member 30 is configured such that the first assembly space 301 for assembling the magnet 20 is divided into a first movable assembly space 3011 and a second movable assembly space 3012 that are spaced apart from each other. The first movable assembly space 3011 and the second movable assembly space 3012 are distributed at intervals along the X-axis and are formed on opposite sides of the first movable member 31 in the Z-axis direction.

[0117] The interval part defining the first movable assembly space 3011 and the second movable assembly space 3012 is defined as the receiving portion 311, that is, the interval space 200 between the first part 210 and the second part 202 is filled with the receiving portion 311. The receiving portion 311 protrudes outward relative to the inner walls defining the first movable assembly space 3011 and the second movable assembly space 3012, and a first receiving groove 310 is opened upward along the Y-axis direction from the bottom of the receiving portion 311. Further, a second sub-receiving groove 3102 and a first sub-receiving groove 3101 are opened upward along the Y-axis direction.

[0118] The second movable member 32 is assembled to the bottom of the first movable member 31 in the Y-axis direction. The support arm 321 is located in the second sub-receiving groove 3102, and the second receiving groove 320 defined by the top end of the support arm 321 and the first sub-receiving groove 3101 cooperate to define the receiving space of the guiding member. The guiding member 33 guides the movement of the first movable member 31.

[0119] Therefore, the guiding member 33 is disposed between the first part 201 and the second part 202 of the magnet 20, and forms a moving fulcrum for the first movable member 31. Further, at least two guiding members 33 are relatively disposed along the Z-axis direction, respectively located between the first part 201 and the second part 202 of the magnets 20 distributed on both sides of the movable member 30. The center point of the guiding member 33 is located on the second rotation axis R2. The connecting line of the center points of at least two guiding members 33 coincides with the second rotation axis R2, and the extending direction of the second rotation axis R2 passes through the spaced space 200 between the first part 201 and the second part 202.

[0120] Further, in some examples, the extending direction of the second rotation axis R2 passes through the center point C of the spaced space 1010 of the coil pattern 101, so that the optical turning module 50 is uniformly stressed and moves more stably and precisely.

[0121] The first coil patterns 11A and 11B extend along a first direction perpendicular to the light incident direction. The spaced space 200 is located between the first part 201 and the second part 202 in the first direction. The first coil patterns 11A and 11B are opposite to the first part 201, the spaced space 200, and the second part 202 along a third direction. The widths W1A and W1B of the first coil patterns 11A and 11B are greater than the widths W2A and W2B of the second coil patterns 12A and 12B to effectively reduce the resistance of the coil pattern 101.

[0122] Further, the widths W2A and W2B of the second coil patterns 12A and 12B are the same. The widths W1A and W1B of the first coil patterns 11A and 11B can be implemented to be the same or different, as long as either of them is greater than W2A and W2B.

[0123] In other examples of the present application, the first part 201 and the second part 202 of the magnet 20 are distributed in a manner with a small interval or no interval to reduce the space occupied by the magnet 20. Correspondingly, the interval between the second coil patterns 12A and 12B is small to reduce the volume of the coil assembly 10.

[0124] The foregoing examples show that the coil assembly 10 with a widening design in the present application is implemented as an OIS coil assembly for the swinging motion of the optical path turning module 50. In other examples of the present application, the coil assembly 10 with a widening design is implemented as an OIS coil assembly at the bottom or rear of the optical path turning module 50.

[0125] Refer to Figures 5A to 5CThe schematic diagram shows an example in which the coil assembly 10 and the magnet 20 of the present application are applied to the lens module actuator of a periscope camera module. In this example, the movable member 30A is implemented as a lens carrier, the optical module is implemented as a lens module 50A, and the movable member 30A carries the lens module 50A to move along its optical axis. The fixed member 40A is implemented as the base of the periscope camera module. The light emitted from the optical path turning module along the first direction (X-axis) reaches the photosensitive module through the lens module 50A. At least one side of the opposite sides of the movable member 30A along the third direction (Z-axis) is provided with a first assembly space 301A, at least one side of the opposite sides of the fixed member 40A along the third direction is provided with a second assembly space 401A, and the first assembly space 301A is opposite along the third direction. One of the coil assembly 10 and the magnet 20 is assembled in the first assembly space 301A, and the other is assembled in the second assembly space 401A to interact with each other, driving the lens carrier to carry the lens module 50A to move along the first direction, adjusting the focus to achieve AF function or optical zoom, etc.

[0126] Among them, the coil assembly 10 and the magnet 20 can be respectively assembled on the opposite sides of the movable member 30A and the fixed member 40A, or the coil assembly 10 and the magnet 20 can be assembled on one side.

[0127] The first coil pattern 11 of the coil pattern 101 extends and is distributed along the direction parallel to the optical axis of the lens module 50A (the first direction, X-axis), and the second coil pattern 12 extends and is distributed along the direction perpendicular to the optical axis of the lens module 50A (the second direction, Y-axis). The second coil pattern 12 and the magnet 20 are opposite to each other along the other direction perpendicular to the optical axis of the lens module 50A or the direction perpendicular to the coil pattern 101 (the third direction, Z-axis) and interact with each other to generate a force along the optical axis direction of the lens module 50A, driving the movable member 30 to carry the lens module 50A to move along the optical axis of the lens module 50A.

[0128] The width W1 of the first coil pattern 11 is greater than the width W2 of the second coil pattern 11, reducing the resistance at the first coil pattern 11, thereby reducing the resistance of the coil assembly 10, improving its quality, and reducing losses.

[0129] The foregoing example shows an example in which the actuator is applied to a periscope camera module. In other examples of the present application, the actuator of the present application can be applied to an upright camera module. The optical module can be implemented as an optical lens or a photosensitive chip of an upright camera module. The coil assembly 10 and the magnet 20 interact with each other to drive the optical lens to move in a plane perpendicular to its optical axis to achieve lens movement type OIS, or drive the photosensitive chip to move in a plane perpendicular to its optical axis to achieve chip movement type OIS.

[0130] The coil assembly 10 of the actuator provided in this application is designed with a widened width, which has no effect on the total length, number of turns, etc. of the coil assembly 10, but only widens a part of the coil pattern 101. On the basis of the original design, the cross-sectional area of a part of the coil pattern 101 is increased. While reducing the resistance, it avoids overly increasing the volume of the coil assembly 10. The implementation method and widening degree of the widening design can be determined according to design requirements. Further, a width increase design or a parallel circuit design is carried out on the first coil pattern unit 111 of each turn of the coil pattern 101, so that the resistance of the coil pattern unit of each turn can be reduced, thereby improving the quality of the coil assembly 10.

[0131] Referring to Figure 6A and Figure 6B For the schematic illustration, the coil assembly 10 of this application is mounted to the printed circuit board 100. More preferably, the substrate 102 is provided with a welding area 1021. The welding area 1021 is located at the edge of the substrate 102, or at a position close to the edge of the substrate 102. The welding area 1021 is welded to the printed circuit board 100 to achieve a fixed connection and a conductive connection between the coil assembly 10 and the printed circuit board 100. Further, the positive and negative poles of the coil pattern 101 are led out and conductively connected to the printed circuit board 100, so that the coil pattern 101 obtains current through the printed circuit board 100.

[0132] Among them, in one implementation, the printed circuit board 100 is implemented as a flexible printed circuit board. In other implementations, it can also be implemented as a rigid board, a rigid-flex board, etc.

[0133] Combined with Figures 3A to 4B the example, Figure 6A the printed circuit board 100 shown can be mounted to a periscope camera module and applied as the main board of the periscope camera module, or an anti-shake circuit board. The printed circuit board 100 is mounted around the movable member 30 to the fixed member 40. The coil assembly 10 is mounted on the surfaces of the printed circuit board 100 facing both sides of the movable member 30 in the third direction, so that the coil assemblies 10 are distributed on both sides of the movable member 30. The second coil assembly 10A is mounted on the surface of the printed circuit board 100 facing one side of the movable member 30 in the first direction, so that the second coil assembly 10A is distributed on one side of the movable member 30.

[0134] Combined with Figures 5A to 5C the example, Figure 6A and Figure 6B the printed circuit board 100 shown can be mounted to a periscope camera module and applied as the main board of the periscope camera module, or a focus adjustment circuit board. The coil assembly 10 is mounted on the surface of the printed circuit board 100 facing one side or both opposite sides of the lens module 50A.

[0135] Combined with Figures 3A to 5CExample, and with reference to Figure 6B As shown in Figure 6B , the printed circuit board 100 can integrally extend from the outside of the optical path turning module 50 to the outside of the lens module 50A. Or rather, the periscope camera module includes an integrally extended printed circuit board 100, and the coil assembly 10 is mounted on the surface facing the optical path turning module 50 and the lens module 50A.

[0136] In addition, with reference to Figure 7 As shown in Figure 7 , the distance from the outermost side of the coil pattern 101 to the side of the substrate 102 is the same. Specifically, the outermost side of the first coil pattern 11 is the side E111, the side of the substrate 102 extending in the first direction is the side E21, the distance between the side E111 and the side E21 is D1, the outermost side of the second coil pattern 12 is the side E121, the side of the substrate 102 extending in the second direction is E22, and the distance between the side E121 and the side E22 is D2, where D1 = D2. That is, the distance from the edge of the first coil pattern 11 to the edge of the substrate 102 is the same as the distance from the edge of the second coil pattern 12 to the edge of the substrate 102.

[0137] The coil pattern 101 has an inner spacing space 1010. The distance between the innermost sides E112 of the first coil patterns 11 on both sides defines the distance of the inner spacing space 1010 in the second direction, and the distance between the innermost sides E122 of the second coil patterns 12 on both sides defines the distance of the inner spacing space 1010 in the first direction.

[0138] When widening the first coil pattern 11, it is widened in the direction opposite to the innermost side E112, that is, the first coil pattern 11 is widened outward, while avoiding affecting the size of the inner spacing space 1010.

[0139] In some examples, the actuator of the present application further includes a position sensor 70 for detecting position changes for the actuator to perform corresponding adjustment movements to achieve anti-shake, focusing, zooming, etc. With reference to Figure 5B As shown in Figure 5B , the position sensor 70 is disposed in the inner spacing space 1010 to avoid occupying extra space and improve space utilization.

[0140] According to another aspect of the present application, in combination with Figures 1A to 7 the examples shown in Figures 1A to 7 , the present application also provides a manufacturing method for a camera module, including the following steps:

[0141] Form a coil pattern 101 on the substrate 102. The coil pattern 101 includes a first coil pattern 11 extending in the first direction and a second coil pattern 12 extending in a second direction perpendicular to the first direction, and the width of the first coil pattern 11 is greater than the width of the second coil pattern 12;

[0142] The coil assembly 10 formed by the coil pattern 101 and the substrate 102 is welded to the printed circuit board 100;

[0143] One of the coil assembly 10 and the magnet 20 is mounted to the movable member 30, and the other is mounted to the fixed member 40;

[0144] Among them, the magnet 20 includes a first portion 201 and a second portion 202. Polar portions with different polarities are respectively formed on one side of the first portion 201 and the second portion 202 facing the coil assembly, and the first portion 201 and the second portion 202 are arranged along the first direction.

[0145] The above description is only the preferred embodiment of the present application and the explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. Camera module, characterized in that, it includes: an optical module, a movable member, a coil assembly and a magnet. The optical module is mounted on the movable member. One of the coil assembly and the magnet is mounted on the movable member, at least on one side of the optical module. The coil assembly and the magnet interact to generate a driving force to drive the movable member to carry the optical module to move; the magnet includes a first part and a second part, and polar parts with different polarities are respectively formed on one side of the first part and the second part facing the coil assembly; the coil assembly includes a substrate and a coil pattern formed on the substrate. The coil pattern includes a first coil pattern extending in a first direction and a second coil pattern extending in a second direction perpendicular to the first direction; wherein, the extending direction of the first coil pattern is parallel to the arrangement direction of the first part and the second part, and the width of the first coil pattern is greater than the width of the second coil pattern.

2. The camera module according to claim 1, characterized in that, at least a part of the first coil pattern protrudes along the second direction relative to the magnet.

3. The camera module according to claim 2, characterized in that, the first coil pattern faces the first part and the second part.

4. The camera module according to claim 1, characterized in that, the coil pattern includes a plurality of coil pattern units. Each coil pattern unit includes a first coil pattern unit extending in the first direction and a second coil pattern unit extending in the second direction. The width of the first coil pattern unit is greater than the width of the second coil pattern.

5. The camera module according to claim 4, characterized in that, the first coil pattern unit includes a plurality of coil units connected in parallel.

6. The camera module according to claim 4, characterized in that, the gaps between the coil pattern units are the same, and the gaps between the first coil pattern units and the second coil pattern units are the same.

7. The camera module according to claim 1, characterized in that, the distances from the first coil pattern and the second coil pattern to the edge of the substrate are the same.

8. The camera module according to any one of claims 1 to 7, characterized in that, it further includes a printed circuit board. The coil assembly is soldered to the printed circuit board. Wherein, at least one soldering area is provided on the substrate for fixed connection with the printed circuit board.

9. The camera module according to claim 8, characterized in that, it further includes a fixing member. The movable member is movably assembled to the fixing member, and the other of the coil assembly and the magnet is mounted on the fixing member.

10. The camera module according to claim 9, characterized in that, The optical module is an optical path turning module. The coil assembly and the magnet are installed on both sides of the optical path turning module. The extending direction of the first coil pattern is parallel to the light emitting direction of the optical path turning module, and the extending direction of the second coil pattern is parallel to the light incident direction of the optical path turning module. The magnet and the coil assembly interact to generate a driving force parallel to the light emitting direction to drive the optical path turning module to rotate around a first rotation axis, and the first rotation axis is parallel to the light incident direction.

11. The imaging module according to claim 10, wherein, the movable member includes a first movable member, a second movable member and a guiding member. The first movable member and the second movable member are installed on the fixed member along a second direction, and the guiding member is installed between the first movable member and the second movable member to guide the movement of the first movable member. Wherein, the imaging module further includes a second coil assembly and a second magnet, and the second coil assembly and the second magnet are installed on the fixed member and the first movable member along the first direction to drive the first movable member to rotate around a second rotation axis.

12. The imaging module according to claim 11, wherein, the second movable member is installed at the bottom of the first movable member along the second direction. The second movable member includes two support arms extending along the second direction and opposite to each other along a third direction. The support arms extend to the opposite two side portions of the first movable member along the third direction. The guiding member is assembled in a second receiving groove defined by the top ends of the support arms, and the center point of the guiding member is located on the second rotation axis.

13. The imaging module according to claim 12, wherein, the magnet includes a first part and a second part, and there is a spaced space between the first part and the second part. The support arms are located in the spaced space, and the parts of the first part and the second part facing the coil assembly form polar parts with opposite polarities.

14. The imaging module according to claim 13, wherein, a first movable assembly space and a second movable assembly space are provided on the side portion of the first movable member. The first part and the second part are respectively assembled in the first movable assembly space and the second movable assembly space. A receiving portion is provided between the first movable assembly space and the second movable assembly space. The receiving portion is provided with a first sub-receiving groove and a second sub-receiving groove along the second direction. At least a part of the guiding member is received in the first sub-receiving groove, and the support arms extend into the second sub-receiving groove.

15. The imaging module according to claim 9, wherein, the optical module is a lens module, and the coil assembly and the magnet are arranged on at least one side of the lens module to interact and generate a driving force parallel to the optical axis direction of the lens module. Wherein, the extending direction of the first coil pattern is parallel to the optical axis of the lens module.

16. A manufacturing method of an imaging module, wherein, it includes the following steps: A substrate with a coil pattern is provided. The coil pattern includes a first coil pattern extending in a first direction and a second coil pattern extending in a second direction perpendicular to the first direction. The width of the first coil pattern is greater than the width of the second coil pattern. The coil assembly formed by the coil pattern and the substrate is soldered to a printed circuit board. One of the coil assembly and the magnet is mounted to a movable member, and the other is mounted to a fixed member. Wherein, the magnet includes a first part and a second part. Polar parts with different polarities are respectively formed on one sides of the first part and the second part facing the coil assembly. The first part and the second part are arranged along the first direction.

Images