Driving device and camera module

Abstract

The invention discloses a driving device and a camera module, and the driving device comprises a first frame which carries an optical element, and the optical element is provided with an optical axis; the first frame is movably arranged on the second frame; the at least one first driving assembly is suitable for driving the first frame to move in the direction perpendicular to the optical axis relative to the second frame, the first driving assembly comprises at least one anti-shake coil and at least one anti-shake magnet which are oppositely arranged, one of the anti-shake coil and the anti-shake magnet is arranged on the first frame, and the other one is arranged on the second frame; the anti-shake coil comprises a first effective section and a second effective section, the first effective section and the second effective section are arranged on the two adjacent sides of the anti-shake magnet respectively, when the anti-shake coil is powered on, the first effective section and the anti-shake magnet generate first driving force, and the second effective section and the anti-shake magnet generate second driving force. The first driving force and the second driving force jointly drive the anti-shake coil and the anti-shake magnet to generate relative displacement in the direction perpendicular to the optical axis.

Description

Technical Field

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

[0002] Camera modules have become standard equipment in electronic devices such as mobile phones and tablets to meet shooting needs. To ensure shooting quality, camera modules are usually equipped with optical image stabilization (OIS). The implementation of optical image stabilization relies on motors driving the movement of optical components such as optical lenses or image sensors.

[0003] As consumers' demands for image quality continue to rise, the image stabilization performance of camera modules is becoming increasingly crucial. For example, during video recording, device shake can cause blurry images, severely reducing the quality of the video. Especially in telephoto shooting mode, even minor device shake can be significantly amplified, causing violent shaking in the footage. Furthermore, when using digital zoom, the image shake problem is further exacerbated, seriously affecting the shooting experience. Summary of the Invention

[0004] One objective of this application is to provide a driving device to solve the problem that the low driving force of the camera module leads to poor image stabilization effect.

[0005] Another objective of this application is to provide a camera module with better image stabilization.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a driving device, comprising: a first frame for directly or indirectly supporting an optical element, the optical element having an optical axis; a second frame, the first frame being movably disposed within the second frame; and at least one first driving component adapted to drive the first frame to move relative to the second frame in a direction perpendicular to the optical axis. The first driving component includes at least one anti-shake coil and at least one anti-shake magnet disposed opposite to each other. One of the anti-shake coil and the anti-shake magnet is disposed in the first frame, and the other is disposed in the second frame. The anti-shake coil includes a first effective segment and a second effective segment, the first effective segment and the second effective segment being respectively disposed on adjacent sides of the anti-shake magnet. When the anti-shake coil is energized, the first effective segment and the anti-shake magnet generate a first driving force, and the second effective segment and the anti-shake magnet generate a second driving force. The first driving force and the second driving force jointly drive the anti-shake coil and the anti-shake magnet to undergo relative displacement in a direction perpendicular to the optical axis.

[0007] As a preferred embodiment, the second effective segment and the anti-shake magnet are disposed opposite to each other along the optical axis, the first effective segment and the anti-shake magnet are disposed opposite to each other along a first direction, the first driving force and the second driving force are in the same direction in the first direction, and the first direction is perpendicular to the optical axis.

[0008] As a preferred embodiment, the second effective segment is disposed on the top or bottom surface of the anti-shake magnet.

[0009] Preferably, when the anti-shake coil is energized, the current direction of the first effective segment is opposite to the current direction of the second effective segment.

[0010] As another preferred embodiment, the anti-shake magnet has a first side opposite to the first effective segment and a second side opposite to the second effective segment, the first side being parallel to the optical axis and the second side being perpendicular to the optical axis.

[0011] Further preferably, the first side has both an N-pole region and an S-pole region, the second side has only an N-pole region or an S-pole region, and the boundary region between the first effective segment and the N-pole region and the S-pole region of the first side is arranged opposite to each other along a first direction perpendicular to the optical axis.

[0012] Further preferably, when the distance between the anti-shake magnet and the first effective segment increases, when viewed along the optical axis, the second effective segment moves closer to the center of the second side.

[0013] Further preferably, when the first effective segment is closest to the anti-shake magnet, the geometric center of the anti-shake magnet is located between the first effective segment and the second effective segment when viewed along the optical axis.

[0014] Further preferably, when the anti-shake coil is energized, the distance between the first effective segment and the anti-shake magnet along the first direction changes, while the distance between the second effective segment and the anti-shake magnet along the optical axis remains unchanged.

[0015] More preferably, the image stabilization coil includes a first effective segment, a second effective segment, a first connecting segment, and a second connecting segment, wherein the first connecting segment and the second connecting segment are respectively used to connect the two ends of the first effective segment and the second effective segment.

[0016] More preferably, the anti-shake coil is formed by bending a ring coil into an L-shaped coil, the bent portion of the ring coil forming the first connecting segment and the second connecting segment of the L-shape, and the unbent portion of the ring coil forming the first effective segment and the second effective segment, respectively.

[0017] Further preferably, the second frame is provided with a coil fixing part suitable for installing the image stabilization coil. The coil fixing part extends from the bottom to the top of the second frame. A fixing window is formed between the first effective segment and the second effective segment. The coil fixing part is disposed in the fixing window, and the top of the coil fixing part abuts against the first effective segment along the optical axis.

[0018] Further preferably, the bottom of the coil fixing part is provided with a protrusion, the protrusion protrudes along the second direction and supports the second effective segment, the second direction is perpendicular to the first direction and perpendicular to the optical axis direction.

[0019] More preferably, the image stabilization coil includes a first sub-coil and a second sub-coil, wherein the first effective segment is a part of the first sub-coil and the second effective segment is a part of the second sub-coil.

[0020] Further preferably, the first sub-coil and the second sub-coil are arranged in an L-shape; the side of the first sub-coil away from the second sub-coil is the first effective segment, and the side closer to the second sub-coil is the first ineffective segment; the side of the second sub-coil away from the first sub-coil is the second effective segment, and the side closer to the first sub-coil is the second ineffective segment; the first ineffective segment and the second ineffective segment are opposite to each other along the optical axis.

[0021] More preferably, the driving device includes two first driving components, which are disposed on adjacent sides of the first frame.

[0022] Further preferably, the driving device further includes a third frame for mounting the optical element and a second driving assembly. The third frame is movably disposed within the first frame. The second driving assembly includes a focusing coil and a focusing magnet. One of the focusing coil and the focusing magnet is disposed in the third frame and the other is disposed in the first frame. The second driving assembly is used to drive the third frame to move relative to the first frame along the optical axis.

[0023] Further preferably, the driving device further includes an image stabilization circuit board, a focusing circuit board, and a conductive lead-out insert. The image stabilization circuit board is located at the bottom of the second frame, and the image stabilization coil is electrically connected to the image stabilization circuit board. The focusing circuit board is located on the side of the second frame, and the focusing coil is electrically connected to the focusing circuit board. The conductive lead-out insert is embedded in the second frame, and the image stabilization circuit board and the focusing circuit board are electrically connected through the conductive lead-out insert.

[0024] Further preferably, the focusing circuit board includes a conductive fixing part, a conductive movable part, and at least one conductive connecting part. The two ends of the conductive connecting part are deformably connected to the conductive fixing part and the conductive movable part, respectively. The conductive movable part is disposed on the fourth side of the first frame. The first frame drives the conductive movable part to move in a direction perpendicular to the optical axis. The conductive fixing part is disposed on the first side of the first frame. The first side and the fourth side are adjacent sides. One end of the conductive connecting part is bent and connected to the conductive movable part on the fourth side. The other end of the conductive connecting part extends along the top of the second side and the top of the third side of the first frame to the first side and is bent and connected to the conductive fixing part on the first side.

[0025] This application also provides a camera module, which includes: the aforementioned driving device; an optical lens held on the driving device; and a photosensitive component for receiving light from the optical lens.

[0026] Compared with the prior art, the beneficial effects of this application are as follows: When the first effective segment and the anti-shake magnet are energized, they generate a first driving force. When the second effective segment and the anti-shake magnet are energized, they generate a second driving force. The first driving force and the second driving force have the same direction along the component force perpendicular to the optical axis, so that the two driving forces are superimposed in the same driving direction. This increases the electromagnetic force generated by the interaction between the anti-shake coil and the anti-shake magnet after the anti-shake coil is energized, thereby improving the anti-shake effect of the camera module. Attached Figure Description

[0027] Figure 1 An exploded view of a portion of a camera module provided in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the structure of a stabilization coil provided in an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the structure of the first driving component.

[0030] Figure 4 A schematic diagram of the magnetic field distribution and driving force direction of the anti-shake magnet.

[0031] Figure 5 This is a schematic diagram of the structure of a drive device after the second frame has been removed, as provided in an embodiment of this application.

[0032] Figure 6 This is a schematic diagram of the structure of the second driving device provided in the embodiments of this application after the second frame is removed.

[0033] Figure 7 This is a schematic diagram of the second frame.

[0034] Figure 8 An exploded view of another part of a camera module provided in an embodiment of this application.

[0035] Figure 9 This is a schematic diagram of the focusing circuit board.

[0036] Figure 10 for Figure 9 A magnified view of region A in the middle.

[0037] Figure 11 This is a schematic diagram of a driving device provided in an embodiment of this application.

[0038] Figure 12 This is a schematic diagram of the structure of the first retaining component.

[0039] Figure 13 This is a structural diagram of the second frame from another perspective.

[0040] Figure 14 This is a schematic diagram of the third frame.

[0041] Figure 15 This is a cross-sectional view along the optical axis of a driving device provided in an embodiment of this application.

[0042] Figure 16 A cross-sectional view along the optical axis of a third type of driving device provided in an embodiment of this application.

[0043] Figure 17 This is a schematic diagram of another anti-shake coil provided in an embodiment of this application.

[0044] Figure 18 This is a schematic diagram of another type of second frame structure.

[0045] Figure 19 This is a cross-sectional view of the camera module provided in the embodiment of this application along the optical axis.

[0046] In the diagram: 10. First frame; 11. First side; 12. Second side; 13. Third side; 14. Fourth side; 20. Second frame; 21. Coil fixing part; 211. Protrusion; 30. Third frame; 40. First holding assembly; 41. Image stabilization support part; 42. Image stabilization magnetic part; 43. Middle frame; 50. Second holding assembly; 51. Focusing support part; 52. Focusing magnetic part; 60. First driving assembly; 61. Image stabilization magnet; 611. First magnetic surface; 612. Second magnetic surface; 613. Third magnetic surface; 62. Image stabilization coil; 621. First effective segment; 622. Second effective segment; 623. First connecting segment; 624. Second connecting segment; 625. Fixing window; 626. First sub-coil; 6261. First remaining segment; 6 2611, First invalid sub-segment; 627, Second sub-coil; 6271, Second remaining segment; 62711, Second invalid sub-segment; 70, Second drive assembly; 71, Focusing magnet; 72, Focusing coil; 80, Sensing assembly; 81, Image stabilization sensing element; 82, Focusing sensing element; 91, Image stabilization circuit board; 92, Focusing circuit board; 921, Conductive fixing part; 922, Conductive moving part; 923, Conductive connecting part; 9231, First segment; 9232, Second segment; 9233, Chamfered segment; 9235, Proximal segment; 924, Connector; 93, Outgoing conductive insert; 931, First pin; 932, Second pin; 933, External pin; 94, Coil conductive insert; 100, Top cover; 200, Optical lens; 300, Photosensitive assembly. Detailed Implementation

[0047] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0048] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0049] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0050] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application 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 that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0051] In the accompanying drawings of this application, the X, Y, and Z axes are the coordinate axes of a spatial rectangular coordinate system. The optical axis direction, as described below, is parallel to the Z-axis, the first direction is parallel to the X-axis, and the second direction is parallel to the Y-axis. Therefore, the Z-axis direction is the optical axis direction, the X-axis direction is the first direction, and the Y-axis direction is the second direction. The first direction is perpendicular to the second direction. It is understood that the coordinate system can be flexibly set according to actual needs and is not limited here.

[0052] This application provides a driving device for a camera module, such as... Figure 1 As shown, the driving device includes a first frame 10, a second frame 20, a third frame 30, and a top cover 100. Optical elements are disposed on the third frame 30. The first frame 10 supports the third frame 30 and is movably installed inside the second frame 20. The top cover 100 is fastened to the second frame 20 to surround the first frame 10 and the third frame 30, preventing foreign objects from entering and ensuring the imaging effect of the camera module.

[0053] In some embodiments, the optical element may be an optical lens 200 or a photosensitive chip, which will be described herein as an optical lens 200.

[0054] In some embodiments, the driving device further includes at least one first driving component 60. The optical lens 200 has an optical axis that is parallel to the Z-axis direction. The first driving component 60 is adapted to drive the first frame 10 to move relative to the second frame 20 in a direction perpendicular to the optical axis to achieve image stabilization of the camera module. The first driving component 60 includes at least one image stabilization coil 62 and at least one image stabilization magnet 61 disposed opposite to each other. One of the image stabilization coil 62 and the image stabilization magnet 61 is disposed in the first frame 10 and the other is disposed in the second frame 20.

[0055] In existing technologies, the coil used for image stabilization is typically positioned only on the side or bottom of the magnet; that is, the coil is only located on one side of the magnet. Understandably, driving the magnet and coil to move relative to each other on only one side results in a relatively small driving force.

[0056] Therefore, this application improves the coil, such as the image stabilization coil 62. Figure 2As shown, the image stabilization coil 62 includes: a first effective segment 621, a second effective segment 622, a first connecting segment 623, and a second connecting segment 624. The first connecting segment 623 and the second connecting segment 624 are respectively used to connect the two ends of the first effective segment 621 and the second effective segment 622. Figure 3 As shown, the second effective segment 622 and the anti-shake magnet 61 are arranged opposite each other along the Z-axis, and the first effective segment 621 and the anti-shake magnet 61 are arranged opposite each other along the X-axis. The first driving force and the second driving force are in the same direction in the X-axis direction, so that the driving force on the anti-shake magnet 61 is the resultant force of the two.

[0057] It is understood that the second effective segment 622 can be set on the bottom surface of the anti-shake magnet 61 or on the top surface of the anti-shake magnet 61, and no limitation is made here.

[0058] In some embodiments, the current direction of the first effective segment 621 is opposite to the current direction of the second effective segment 622, such as... Figure 4 As shown, the magnetic field lines of the anti-shake magnet 61 originate from the N pole, extend outward in a divergent pattern along space, converge at the S pole, and finally close inside the anti-shake magnet 61, forming a continuous magnetic flux loop. Here, ⊗ represents current flowing inward, and ⊙ represents current flowing outward, as shown... Figure 3 as well as Figure 4 As shown, the current I1 in the first effective segment 621 flows into the paper, and the current I2 in the second effective segment 622 flows out of the paper. That is to say, the directions of the current in the first effective segment 621 and the second effective segment 622 are opposite.

[0059] In some embodiments, combined with Figure 3 and 4 As shown, the anti-shake magnet 61 has a first side surface opposite to the first effective segment 621 and a second side surface opposite to the second effective segment 622. The first side surface is parallel to the Z-axis direction, and the second side surface is perpendicular to the Z-axis direction. The first side surface has both an N-pole region and an S-pole region, while the second side surface has only an N-pole region or an S-pole region. It can be understood that when the second effective segment 622 is located on the top surface of the anti-shake magnet 61, the second side surface has only an S-pole region; when the second effective segment 622 is located on the bottom surface of the anti-shake magnet 61, the second side surface has only an N-pole region. The boundary region between the first effective segment 621 and the N-pole region and the S-pole region of the first side surface is arranged opposite to each other along a first direction perpendicular to the optical axis.

[0060] In some embodiments, such as Figure 3As shown, the side of the anti-shake magnet 61 facing the first effective segment 621 includes a first magnetic surface 611 and a second magnetic surface 612 distributed along the optical axis. The first magnetic surface 611 and the second magnetic surface 612 form the first side surface of the anti-shake magnet 61 facing the first effective segment 621. The first side surface has both an N pole region and a S pole region. The side of the anti-shake magnet 61 facing the second effective segment 622 includes a third magnetic surface 613. It can be understood that the third magnetic surface 613 is the second side surface facing the second effective segment 622. The second side surface is perpendicular to the Z-axis direction and has only an N pole region or an S pole region. The second magnetic surface 612 and the third magnetic surface 613 are adjacent to each other. Among them, the first magnetic surface 611 and the second magnetic surface 612 correspond to the two opposite magnetic poles of the anti-shake magnet 61, and the second magnetic surface 612 and the third magnetic surface 613 correspond to the same magnetic pole of the anti-shake magnet 61. It should be understood that in this application, the N pole region is the surface region on the magnet where the magnetic field lines exit the magnet; the S pole region is the surface region on the magnet where the magnetic field lines enter the magnet.

[0061] like Figure 4 As shown, based on the aforementioned magnetic field lines and current direction, it can be seen that in the magnetic field of the anti-shake magnet 61, when the first effective segment 621 is energized, it experiences a first Ampere force F1 to the right, and when the second effective segment 622 is energized, it experiences a second Ampere force F2 to the right. The first Ampere force F1 and the second Ampere force F2 are in the same direction, and their resultant force is the total Ampere force experienced by the anti-shake coil 62. Figure 5 As shown, when the anti-shake magnet 61 is mounted on the first frame 10, the two Ampere forces acting on the anti-shake coil 62 will generate two reaction forces, which will become the first driving force and the second driving force for moving the first frame 10 along the X-axis or Y-axis, respectively. If the anti-shake coil 62 is mounted on the first frame 10, the two Ampere forces acting on it will directly become the first driving force and the second driving force for moving the first frame 10 along the X-axis or Y-axis.

[0062] When the current direction is reversed, under the line cutting of the magnetic field of the anti-shake magnet 61, the first effective segment 621 is subjected to a first driving force to the left, and the second effective segment 622 is also subjected to a second driving force to the left. The resultant force of the first and second driving forces drives the anti-shake magnet 61 or the anti-shake coil 62 to move along the X-axis or Y-axis. It is worth mentioning that during the operation of the driving device, the first and second driving forces are always in the same direction along the X-axis or Y-axis. It should be understood that the direction of the driving force is perpendicular to the direction of the magnetic field. Figure 4 Only the component force used in the driving direction is shown; the components force in other directions are not shown because they do not act in the driving direction.

[0063] In some embodiments, the stabilizing magnet 61 is fixed to the first frame 10, while the stabilizing coil 62 is fixed to the second frame 20. If the stabilizing magnet 61 moves along the X-axis, then the first frame 10 moves relative to the second frame 20 along the X-axis. It is worth mentioning that this driving method can also be called moving magnet stabilization.

[0064] In other embodiments, such as Figure 6 As shown, the image stabilization coil 62 is mounted on the first frame 10, and the image stabilization magnet 61 is mounted on the second frame 20. Therefore, the driving method is dynamic coil image stabilization.

[0065] It is understood that the anti-shake magnet 61 has a first side opposite to the first effective segment 621 and a second side opposite to the second effective segment 622. The anti-shake coil 62 is L-shaped, with the first side parallel to the Z-axis and the second side perpendicular to the Z-axis. This allows two Ampere forces to be generated when the anti-shake coil 62 is energized. As the anti-shake magnet 61 moves, the two Ampere forces can complement each other, causing the resultant force to decrease or increase.

[0066] In this application, the portion of the stabilizing magnet 61 near the stabilizing coil 62 has a magnetic pole direction parallel to the Z-axis direction, i.e., the N / S direction. In one example, the stabilizing magnet 61 has only one N pole and one S pole, with its magnetic pole direction parallel to the Z-axis direction.

[0067] Furthermore, in one example, the first effective segment 621 corresponds to the boundary region between the N pole and S pole regions on the side surface of the anti-shake magnet 61, that is, in the X-axis direction, the first effective segment 621 overlaps with the N / S pole boundary region on the side surface of the anti-shake magnet 61. In this case, the first driving force of the magnetic field of the anti-shake magnet 61 acting on the first effective segment 621 is parallel or almost parallel to the X-axis direction, and the driving force component outside the X-axis direction is small, thus providing a larger first driving force. It should be understood that the N / S pole boundary region can be a transition region or a neutral region between two opposite magnetic poles.

[0068] In a specific example, such as Figure 4 As shown, the anti-shake magnet 61 is a bipolar magnet with its magnetic poles parallel to the Z-axis direction, and the two magnetic poles of the anti-shake magnet 61 are of equal size. Therefore, in this example, the first effective segment 621 corresponds to the middle region of the anti-shake magnet 61 in the X-axis direction.

[0069] Specifically, such as Figure 2As shown in the figure, the arrows indicate the direction of the current. The first effective segment 621 and the second effective segment 622 are two opposite parts of the same coil. The current in the first effective segment 621 is conducted to the second effective segment 622 through the first connecting segment 623 or the second connecting segment 624. Therefore, the current directions of the first effective segment 621 and the second effective segment 622 are opposite.

[0070] It should be understood that the first effective segment 621 and the second effective segment 622 extend approximately along the Y-axis direction, which is perpendicular to the X-axis and Z-axis directions. Due to the winding process of the anti-shake coil 62, the first effective segment 621 and the second effective segment 622 may have a certain curvature, but this does not affect the overall current direction and driving force direction of the anti-shake coil 62.

[0071] When the distance between the anti-shake magnet 61 and the first effective segment 621 increases, the magnetic field acting on the first effective segment 621 weakens, resulting in a decrease in the first driving force. If the anti-shake coil 62 is only located on one side of the anti-shake magnet 61, this will lead to poor long-stroke anti-shake performance. Therefore, to address the above problems, such as... Figure 4 As shown, this application provides a second effective segment 622 along the Z-axis of the image stabilizing magnet 61. When the distance between the image stabilizing magnet 61 and the first effective segment 621 increases, viewed along the Z-axis, the second effective segment 622 moves closer to the center of the second side, while the distance between the second effective segment 622 and the image stabilizing magnet 61 along the Z-axis remains constant. This increases the second driving force, thereby compensating for the reduction in the first driving force. This reduces the attenuation of the resultant driving force on the first frame 10 or increases the resultant driving force, thus ensuring the image stabilization effect of the camera module. In a specific example, viewed along the Z-axis, when the distance between the image stabilizing magnet 61 and the first effective segment 621 is at its maximum, the second effective segment 622 is aligned with the center of the second side.

[0072] In some embodiments, when the first effective segment 621 is closest to the anti-shake magnet 61, the geometric center of the anti-shake magnet 61, viewed along the Z-axis, is located between the first effective segment 621 and the second effective segment 622. After driving, the anti-shake magnet 61 gradually moves away from the first effective segment 621, and the first driving force gradually decreases. However, the anti-shake magnet 61 gradually moves closer to the second effective segment 622, which causes the second driving force to gradually increase. This increases the second driving force to compensate for the decrease in the first driving force, thereby achieving the goal of no or minimal attenuation of the overall driving force of the driving device.

[0073] In a specific example, when the second effective segment 622 is located on the bottom surface of the anti-shake magnet 61, after the anti-shake coil 62 drives the anti-shake magnet 61 away from the first effective segment 621 in the X-axis direction, the first driving force decreases. Meanwhile, the second effective segment 622 gets closer and closer to the center of the bottom surface of the anti-shake magnet 61 and gradually aligns with the center of the bottom surface, the second driving force increases. This increases the second driving force so that it can compensate for the decrease in the first driving force, thereby achieving the effect that the overall driving force of the driving device does not decrease or decreases only slightly.

[0074] In another specific example, when the second effective segment 622 is located on the top surface of the anti-shake magnet 61, after the anti-shake magnet 61 moves away from the first effective segment 621 in the X-axis direction, the second effective segment 622 gradually aligns with the center of the top surface, thereby increasing the second driving force and thus compensating for the first driving force to a certain extent.

[0075] It should be understood that, during the rated stroke of the drive device, at least one of the first effective segment 621 and the second effective segment 622 should be located within the effective magnetic field of the anti-shake magnet 61, so that the anti-shake magnet 61 can always interact with at least one of the first effective segment 621 and the second effective segment 622 of the anti-shake coil 62.

[0076] In some embodiments, when the anti-shake coil 62 is energized, the distance between the first effective segment 621 and the anti-shake magnet 61 along the X-axis changes, while the distance between the second effective segment 622 and the anti-shake magnet 61 along the Z-axis remains unchanged.

[0077] like Figure 4 As shown, during the process of the anti-shake magnet 61 being driven, no matter how the distance between the first effective segment 621 and the anti-shake magnet 61 changes, the distance between the second effective segment 622 and the anti-shake magnet 61 along the Z-axis remains constant.

[0078] In some embodiments, the image stabilization coil 62 is formed by bending a ring coil into an L-shape. The bent portion of the ring coil forms the first connecting segment 623 and the second connecting segment 624 of the L-shape, and the unbent portion of the ring coil forms the first effective segment 621 and the second effective segment 622, respectively. Specifically, the L-shaped image stabilization coil 62 can be obtained by first winding a metal wire into a planar ring coil, and then bending the ring coil by 90°. The bent portion of the ring coil forms the first connecting segment 623 and the second connecting segment 624 of the L-shape, and the unbent portion forms the first effective segment 621 and the second effective segment 622, respectively. Alternatively, the L-shaped image stabilization coil 62 can be directly wound, in which case the metal wires of the first connecting segment 623 and the second connecting segment 624 are directly bent by 90° during winding. It should be understood that the coil is made of multiple turns of continuously wound metal wire, such as copper or aluminum wire. Therefore, each segment, whether it is the first effective segment 621, the second effective segment 622, the first connecting segment 623, or the second connecting segment 624, contains multiple metal wires, and the first effective segment 621 and the second effective segment 622 are located on the same anti-shake coil 62. It should be understood that due to tolerances, the anti-shake coil 62 may not be able to maintain a precise 90° bend, and there may be some deviation. For example, the bending angle of the anti-shake coil 62 may be kept within the range of 85°-95°.

[0079] In some embodiments, such as Figure 1 and Figure 5 As shown, the first drive assembly 60 is provided in two sets. One set is arranged on one side of the first frame 10 along the X-axis direction, and the other set is arranged on the other side of the first frame 10 along the Y-axis direction. The two first drive assemblies 60 are arranged on two adjacent sides of the first frame 10, thereby driving the first frame 10 to move in different directions.

[0080] In some embodiments, such as Figure 5 As shown, the driving device includes two first driving components 60, which are located on adjacent sides of the first frame 10. It can be understood that the two first driving components 60 drive along the X-axis and Y-axis directions respectively, thereby moving the first frame 10 to any position in the XY plane. During lens image stabilization, the X-axis first driving component 60 can cancel the shaking of the optical lens 200 in the X-axis direction, and the Y-axis first driving component 60 can cancel the shaking in the Y-axis direction. The two sets of driving components cooperate with each other to achieve image stabilization of the optical lens 200 in the XY plane.

[0081] In this application, there are two sets of stabilizing magnets 61 and stabilizing coils 62, with two stabilizing coils 62 and two stabilizing magnets 61 respectively disposed on adjacent sides of the first frame 10. One stabilizing coil 62 and one stabilizing magnet 61 are disposed opposite each other along the X-axis, and the other stabilizing coil 62 and stabilizing magnet 61 are disposed opposite each other along the Y-axis. It should be understood that the stabilizing coils 62 and stabilizing magnets 61 disposed opposite each other along the Y-axis can also be the same as those disposed opposite each other along the X-axis, which will not be elaborated here, so that the camera module has the same stabilization effect in both the X-axis and Y-axis directions.

[0082] It should be understood that the number of anti-shake magnets 61 and anti-shake coils 62 can be more, and two, three or even more sets of anti-shake coils 62 and anti-shake magnets 61 can be set on the same side of the first frame 10, without limitation here.

[0083] In some embodiments, such as Figure 7 As shown, the second frame 20 is provided with a coil fixing part 21 suitable for mounting the image stabilization coil 62. The coil fixing part 21 extends from the bottom to the top of the second frame 20, wherein, as... Figure 2 As shown, a fixed window 625 is formed between the first effective segment 621 and the second effective segment 622. The coil fixing part 21 is disposed in the fixed window 625. The fixed window 625 and the coil fixing part 21 form a nested structure, thereby limiting the deviation of the anti-shake coil 62. Furthermore, the top of the coil fixing part 21 abuts against the first effective segment 621 along the optical axis direction to prevent the anti-shake coil 62 from moving up and down along the Z-axis direction during the driving process.

[0084] In some embodiments, such as Figure 7 As shown, a protrusion 211 is provided on the bottom of the coil fixing part 21. The protrusion 211 protrudes along the Y-axis and supports the second effective segment 622. The protrusion 211 is adapted to be higher than the top surface of the anti-shake magnet 61 or lower than the bottom surface of the anti-shake magnet 61 to support the second effective segment 622, maintain the bending shape of the anti-shake coil 62, prevent the anti-shake coil 62 from deforming, and make the second effective segment 622 higher than or lower than the anti-shake magnet 61.

[0085] In one example, a third frame 30 is movably disposed within a first frame 10, and an optical lens 200 is fixed within the third frame 30, such that the first frame 10 indirectly supports the optical lens 200. The third frame 30 moves relative to the first frame 10 along the Z-axis, thereby realizing the optical focusing function of the drive device.

[0086] In other embodiments of this application, the third frame 30 may also be disposed outside the second frame 20, that is, the second frame 20 is movably disposed within the third frame 30, and the second frame 20 moves relative to the third frame 30 along the Z-axis direction, thereby realizing the optical focusing function of the camera module. It should be understood that in this embodiment, the optical lens 200 is directly fixed within the first frame 10, the first frame 10 directly supports the optical lens 200, and the first frame 10 moves along the Z-axis direction relative to the third frame 30 together with the second frame 20. It should also be understood that the driving device may not include the third frame 30, but only have the first frame 10 and the second frame 20.

[0087] Accordingly, the second drive assembly 70 also includes a focusing magnet 71 and a focusing coil 72, which are arranged opposite each other in a direction perpendicular to the Z-axis. When the focusing coil 72 is energized, the interaction between the focusing coil 72 and the focusing magnet 71 drives the third frame 30 to move relative to the first frame 10 in the Z-axis direction, thereby achieving focusing. It should be understood that one of the focusing coil 72 and the focusing magnet 71 is located in the third frame 30, and the other is located in the first frame 10. In one specific example, the focusing magnet 71 is fixed to the third frame 30, and the focusing coil 72 is fixed to the first frame 10. During optical focusing, the focusing magnet 71 moves relative to the focusing coil 72 along the Z-axis, forming a moving magnet optical focusing. In another specific example, the focusing magnet 71 is fixed to the first frame 10, and the focusing coil 72 is fixed to the third frame 30. During optical focusing, the focusing coil 72 moves relative to the focusing magnet 71 along the Z-axis, forming a moving coil optical focusing.

[0088] In some embodiments, the driving device further includes an image stabilization circuit board 91, a focusing circuit board 92, and a conductive guide 93. The image stabilization circuit board 91 is disposed at the bottom of the second frame 20, the focusing circuit board 92 is disposed on the side of the second frame 20, the conductive guide 93 is embedded in the second frame 20, and the image stabilization circuit board 91 and the focusing circuit board 92 are electrically connected through the conductive guide 93.

[0089] It is understandable that attaching the image stabilization circuit board 91 to the bottom of the second frame 20 and arranging the focusing circuit board 92 on the side utilizes the three-dimensional space of the second frame 20, avoiding the increase in thickness and volume of the drive device caused by the overlap of the two circuit boards, thus minimizing the size of the drive device. The two circuit boards are directly attached to the bottom and side of the second frame 20, which can minimize the gap between them, further compress the ineffective space, and make the structure of the drive device more compact.

[0090] In some embodiments, such as Figure 8As shown, the conductive insert 93 has a first pin 931, a second pin 932, and an external pin 933. The first pin 931 and the second pin 932 are electrically connected to the focusing circuit board 92 and the image stabilization circuit board 91, respectively, without the need for additional connecting wires, which makes the internal space of the drive device more efficient. The external pin 933 is bent downward relative to the surface of the conductive insert 93 and is electrically connected to the external component. It can pass directly through the bottom of the second frame 20 and extend to the outside of the drive device to dock with the external component below, avoiding the external pin 933 from extending to the side of the drive device, which would increase the outer diameter of the drive device.

[0091] Furthermore, such as Figure 5 As shown, the anti-shake circuit board 91 and the anti-shake coil 62 are electrically connected through the coil conductive insert 94. If the anti-shake circuit board 91 and the anti-shake coil 62 are directly connected with wires, the anti-shake coil 62 will move at high frequency and small amplitude when the drive device is working. The wires will be repeatedly bent and pulled. Long-term use may cause the solder joints to fall off or the wires to break, resulting in circuit breakage and failure of the anti-shake function. Therefore, the coil conductive insert 94 is set to electrically connect the two. The coil conductive insert 94 is made of metal. While maintaining a rigid connection, it leaves a gap for movement so that the connection will not break due to movement, thus maintaining conductivity stability.

[0092] Furthermore, the image stabilization circuit board 91 can be electrically connected to the coil conductive insert 94, thereby connecting it to other components of the camera module via the coil conductive insert 94. The coil conductive insert 94 and the lead-out conductive insert 93 are spaced apart, with the coil conductive insert 94 positioned above the lead-out conductive insert 93. Both ends of the coil conductive insert 94 are exposed; one end is used to connect to the image stabilization coil 62, and the other end is used to conduct electricity with the image stabilization circuit board 91, enabling the image stabilization coil 62 to conduct electricity with the lead-out conductive insert 93. One end of the lead-out conductive insert 93 is electrically connected to the focusing circuit board 92, and the other end is located on one side of the drive device, extending outward from the second frame 20 to form an external pin 933. This external pin 933 is used for electrical connection to other components of the camera module. Specifically, this external pin 933 is located on the third side 13 of the drive device.

[0093] In some embodiments, such as Figure 9 As shown, the focusing circuit board 92 includes a conductive fixing part 921, a conductive movable part 922, and at least one conductive connecting part 923. The two ends of the conductive connecting part 923 are deformably connected to the conductive fixing part 921 and the conductive movable part 922, respectively. Figure 11As shown, the conductive movable part 922 is located on the fourth side 14 of the first frame 10, and the conductive fixing part 921 is located on the first side 11 of the first frame 10. The first frame 10 drives the conductive movable part 922 to move in a direction perpendicular to the optical axis. The first side 11 and the fourth side 14 are adjacent sides. The conductive fixing part 921 is located in the fixed area of ​​the first frame 10 and can be directly connected to the external conductive structure of the drive device. This avoids the power supply line from becoming loose due to the movement of the first frame 10, ensuring stable current transmission and reducing power supply fluctuations during focusing. The conductive movable part 922 moves with the first frame 10 and is directly connected to the focusing coil 72, eliminating the need for a long flexible wire connection. This reduces the resistance of the line, reduces current loss, and improves the response speed of the focusing drive.

[0094] Among them, such as Figure 11 as well as Figure 13 As shown, the conductive movable part 922 is fixed to the outer surface of the fourth side 14 of the first frame 10. The focusing coil 72 and the focusing sensing element 82 are fixed and electrically connected to the conductive movable part 922, such that the focusing coil 72 and the focusing sensing element 82 are fixed to the first frame 10 by fixing to the conductive movable part 922. The focusing magnetic part 52 is fixed to the other side of the conductive movable part 922. It can be understood that the focusing magnetic part 52 and the focusing coil 72 are disposed on both sides of the conductive movable part 922, such that the focusing magnetic part 52 is fixed to the first frame 10.

[0095] In some embodiments, such as Figure 11 As shown, one end of the conductive connection 923 is bent and connected to the conductive movable part 922 on the fourth side 14, and the other end of the conductive connection 923 extends along the top of the second side 12 and the top of the third side 13 of the first frame 10 to the first side 11, and is bent and connected to the conductive fixing part 921 on the first side 11.

[0096] It is understandable that: Figure 9 As shown, the conductive fixed part 921 serves as the reference part of the focusing circuit board 92. It does not move during the focusing process of the camera module. It is responsible for receiving control signals and transmitting the signals to the conductive movable part 922 through the conductive connection part 923. The conductive movable part 922 moves with the first frame 10. When the first frame 10 moves along the X-axis or Y-axis for image stabilization, the conductive movable part 922 translates accordingly. When the first frame 10 moves along the Z-axis for focusing, the conductive movable part 922 moves synchronously. If the first frame 10 has a compound movement, such as simultaneously performing image stabilization and zooming, the conductive movable part 922 will also make a corresponding compound displacement, always remaining relatively stationary with respect to the first frame 10.

[0097] Furthermore, if the conductive fixing part 921 and the conductive moving part 922 are directly connected at the connection between the first side 11 and the fourth side 14, the conductive connecting part 923 will be too short. When the first frame 10 moves, the conductive connecting part 923 will undergo a large deformation, which may easily lead to the breakage of the metal conductive material or the damage of the insulation layer. Therefore, the conductive connecting part 923 is routed around the second side 12 and the third side 13, which allows for more deformation. When the first frame 10 moves, the deformation of the conductive connecting part 923 will be evenly distributed on a longer path, and the deformation amplitude of each segment will be reduced, preventing the conductive connecting part 923 from breaking and improving the durability of the conductive connecting part 923.

[0098] Furthermore, the conductive connection portion 923 is provided with a proximal end section 9235, which is fixedly connected to the conductive fixing portion 921 on the first side 11. There is a gap between the proximal end section 9235 and the top of the first frame 10 to prevent physical friction between the first frame 10 and the proximal end section 9235 when the first frame 10 moves along the Z-axis. This gap provides clearance for the first frame 10 to move along the Z-axis, ensuring that the top of the first frame 10 will never come into contact with the proximal end section 9235 within the maximum travel of the Z-axis.

[0099] In some embodiments, such as Figure 10 As shown, where Figure 10 yes Figure 9 An enlarged view of region A shows that the conductive connection 923 includes a first segment 9231, a second segment 9232, and a chamfered segment 9233. The first segment 9231 and the second segment 9232 are connected by the chamfered segment 9233. The first segment 9231 is located at the top of the second side 12, and the second segment 9232 is located at the top of the third side 13. The angles between the first segment 9231 and the chamfered segment 9233, and between the second segment 9232 and the chamfered segment 9233, are obtuse angles to reduce the risk of cracking of the conductive connection 923 at the connection between the second side 12 and the third side 13, so that stress can be distributed at the chamfered segment 9233 to prevent local stress concentration.

[0100] Furthermore, such as Figure 11As shown, the conductive connection portion 923 is flat and positioned above the second frame 20 and the first frame 10. The thickness of the conductive connection portion 923 is small, so it does not excessively increase the height of the camera module in the Z-axis direction. Furthermore, in this application, the conductive connection portion 923 has a small elastic coefficient in the horizontal direction, allowing it to deform under a small force, thus reducing the resistance to lateral deformation and minimizing its impact on image stabilization. In the optical axis direction, the conductive connection portion 923 has a large elastic coefficient, preventing it from sagging in the portion away from the conductive movable portion 922 and the conductive fixed portion 921, thereby reducing friction between the conductive connection portion 923 and the top of the second frame 20. It is understood that the elastic coefficient of the conductive connection portion 923 in the horizontal direction is smaller than that in the optical axis direction.

[0101] In some embodiments, such as Figure 10 As shown, multiple conductive connection portions 923 are spaced apart, and a connecting flap 924 is provided between the conductive connection portions 923, the connecting flap 924 connecting two adjacent conductive connection portions 923 to each other. The conductive connection 923 has a gap so that it can be composed of two or more wires. This further reduces the mechanical resistance caused by the rigidity of the conductive connection 923 when it moves with the first frame 10. If only one conductive connection 923 is provided, the material continuity of the overall structure is strong, and the intermolecular forces are more concentrated during deformation, requiring a greater external force to bend or stretch it. This resistance will act in the opposite direction on the first frame 10, causing the first frame 10 to jam during movement.

[0102] Furthermore, by providing multiple conductive connectors 923, the flexibility of each conductive connector 923 is improved, but it also causes a single conductive connector 923 to easily shift independently. Without the constraint of the connecting flap 924, when the first frame 10 moves, multiple conductive connectors 923 are prone to misalignment due to uneven force and different deformation directions. In order to enable two or more conductors to move or deform together, connecting flaps 924 can also be provided between the conductive connectors 923 to enable two or more conductive connectors 923 to move or deform together and avoid the problem of misalignment.

[0103] In some embodiments, such as Figure 8 As shown, the drive device also includes a first holding assembly 40, which includes a shake-stabilizing support 41, a middle frame 43, and a shake-stabilizing magnetic suction part 42, as shown. Figure 7As shown, the intermediate frame 43 is disposed between the first frame 10 and the second frame 20 along the optical axis. The first frame 10 is disposed within the second frame 20, and the intermediate frame 43 is disposed at the bottom of the second side 12 and the third side 13. It can be understood that the intermediate frame 43 and the image stabilization coil 62 are disposed on the same two sides. The image stabilization support part 41 is disposed between the first frame 10 and the second frame 20, and the image stabilization magnetic attraction part 42 is disposed between the first frame 10 and the second frame 20 and magnetically attracts the image stabilization magnet 61. By means of the magnetic attraction between the image stabilization magnetic attraction part 42 and the image stabilization magnet 61, the image stabilization support part 41 is clamped between the first frame 10 and the second frame 20, and the first frame 10 is also supported in the second frame 20 by the image stabilization support part 41.

[0104] In other embodiments, the first retaining component 40 may be implemented as an elastic medium such as a spring or a suspension wire. The first retaining component 40 connects the first frame 10 and the second frame 20, and by means of the properties of the elastic medium, the first frame 10 is movably suspended in the second frame 20.

[0105] Furthermore, the anti-shake support 41 is located at the top and / or bottom of the intermediate frame 43. It is understood that the anti-shake support 41 is implemented as at least three balls, which are disposed between the first frame 10 and the second frame 20 to maintain the gap between the first frame 10 and the second frame 20, thereby reducing the friction between the first frame 10 and the second frame 20 and reducing the wear of the first frame 10 during movement.

[0106] Alternatively, the image stabilization support 41 may be implemented with at least six ball bearings, with at least three ball bearings positioned between the first frame 10 and the intermediate frame 43, and at least three ball bearings positioned between the intermediate frame 43 and the second frame 20. Under the magnetic attraction of the image stabilization magnetic attraction 42 and the image stabilization magnet 61, the first frame 10 and the second frame 20 clamp at least six ball bearings and the intermediate frame 43, thereby confining the intermediate frame 43 between the first frame 10 and the second frame 20. It is worth mentioning that by setting two layers of ball bearings, the movement of the first frame 10 relative to the second frame 20 in the X-axis and Y-axis directions can be controlled separately, thereby avoiding crosstalk between the two directions and ensuring that each image stabilization correction of the first frame 10 is strictly performed along the preset direction, ultimately achieving a more accurate and stable image stabilization effect, which is especially suitable for drive devices of miniaturized lenses with extremely high precision requirements.

[0107] It is worth mentioning that when the anti-shake magnet 61 is disposed on the first frame 10, the anti-shake magnetic attraction part 42 is disposed on the second frame 20; when the anti-shake magnet 61 is disposed on the second frame 20, the anti-shake magnetic attraction part 42 is disposed on the first frame 10, wherein the anti-shake magnetic attraction part 42 is implemented as a magnetic conductive element suitable for being magnetically attracted by the anti-shake magnet 61.

[0108] In some embodiments, such as Figure 13 as well as Figure 14 As shown, the drive device also includes a second holding assembly 50, which includes a focusing support portion 51 and a focusing magnetic suction portion 52. The focusing support portion 51 is clamped between the first frame 10 and the third frame 30, and the focusing magnetic suction portion 52 is disposed between the first frame 10 and the second frame 20. The focusing magnet 71 is mounted on the third frame 30, and the focusing magnetic suction portion 52 and the focusing magnet 71 attract each other so that the first frame 10 and the third frame 30 clamp the focusing support portion 51, thereby limiting the movement of the third frame 30 only along the Z-axis direction and preventing the third frame 30 from shifting.

[0109] Alternatively, the second retaining component 50 can be implemented as an elastic medium such as a spring or a suspension wire. The second retaining component 50 connects the third frame 30 and the first frame 10, and by means of the properties of the elastic medium, the third frame 30 is movably suspended in the first frame 10.

[0110] It is understood that when the focusing magnet 71 is fixed to the third frame 30, the focusing magnetic attraction part 52 is disposed on the first frame 10; when the focusing magnet 71 is fixed to the first frame 10, the focusing magnetic attraction part 52 is disposed on the third frame 30. The focusing magnetic attraction part 52 can be implemented as a magnetically conductive component suitable for being magnetically attracted by the focusing magnet 71.

[0111] Furthermore, the focusing support 51 is implemented as two guide rods, wherein the two guide rods are fixed to the inside of the first frame 10.

[0112] In some embodiments, such as Figure 13 As shown, the driving device also includes a sensing component 80, and the sensing component 80 further includes a focusing sensing element 82, such as... Figure 15 As shown, the focusing sensing element 82 is opposite to the focusing magnet 71. By acquiring the magnetic field change information of the focusing magnet 71, the position change information of the third frame 30 relative to the first frame 10 is acquired. The focusing sensing element 82 is fixed on the first frame 10.

[0113] In some embodiments, such as Figure 6 As shown, the sensing component 80 also includes two image stabilization sensing elements 81. It can be understood that the number of image stabilization sensing elements 81 is the same as the number of the first driving component 60, and the image stabilization sensing elements 81 and the first driving component 60 are located on the same side, such as... Figure 12 As shown, the two image stabilization sensing elements 81 are respectively arranged opposite to the two image stabilization magnets 61 along the Z-axis. By acquiring the magnetic field change information of the two image stabilization magnets 61, the position change information of the first frame 10 relative to the second frame 20 can be obtained.

[0114] It is understood that both the image stabilization sensing element 81 and the focus sensing element 82 can be implemented as Hall elements, tunnel magnetoresistive elements, or other driving chips with position detection functions, without any limitation.

[0115] In other embodiments, such as Figure 16 as well as Figure 17 As shown, this application also provides another image stabilization coil 62, which includes a first sub-coil 626 and a second sub-coil 627, with the first sub-coil 626 disposed on one side of the surface of the second sub-coil 627, so that the image stabilization coil 62 is L-shaped. Figure 16 As shown, the image stabilization coil 62 is mounted on the second frame 20, and the image stabilization magnet 61 is mounted on the first frame 10, with the image stabilization magnet 61 positioned opposite to the image stabilization coil 62 along the X-axis. Alternatively, the image stabilization coil 62 can be mounted on the first frame 10, and the image stabilization magnet 61 can be mounted on the second frame 20; this is not a limitation.

[0116] Furthermore, the first sub-coil 626 and the anti-shake magnet 61 are arranged opposite each other along the X-axis, and the second sub-coil 627 and the anti-shake magnet 61 are arranged opposite each other along the Z-axis, thereby driving the anti-shake magnet 61 and the anti-shake coil 62 to move away from or closer to each other in a direction perpendicular to the Z-axis, so as to achieve image stabilization of the camera module.

[0117] Furthermore, such as Figure 17 As shown, the first sub-coil 626 includes a first residual segment 6261. It can be understood that the first effective segment 621 and the first residual segment 6261 constitute the first sub-coil 626. The second sub-coil 627 includes a second residual segment 6271, and the second effective segment 622 and the second residual segment 6271 constitute the second sub-coil 627. Therefore, it can be known that the first effective segment 621 and the second effective segment 622 are located on two different sub-coils. The first residual segment 6261 and the second residual segment 6271 are U-shaped, and it can be understood that the two effective segments and the two residual segments are located on different sub-coils. The first sub-coil 626 and the second sub-coil 627 are formed by continuously winding multiple turns of metal wire. Therefore, each of the first effective segment 621, the second effective segment 622, the first residual segment 6261, and the second residual segment 6271 contains multiple metal wires.

[0118] Furthermore, the current directions of the first effective segment 621 and the second effective segment 622 are opposite, and the first sub-coil 626 and the second sub-coil 627 can be connected in series or in parallel, without limitation. The first remaining segment 6261 also includes a first sub-ineffective segment 62611 disposed opposite to the first effective segment 621 along the Z-axis. Similarly, the second sub-coil 627 also includes a second sub-ineffective segment 62711, which is disposed opposite to the second effective segment 622 along a direction perpendicular to the Z-axis. Figure 16 As shown, when the first sub-coil 626 and the second sub-coil 627 are set perpendicularly, the first sub-invalid segment 62611 and the second sub-invalid segment 62711 are opposite each other along the Z-axis. Since neither of them overlaps with the anti-shake magnet 61 in the X-axis, Y-axis and Z-axis directions, the influence of the first sub-invalid segment 62611 and the second sub-invalid segment 62711 on the magnetic field of the anti-shake magnet 61 can be ignored.

[0119] Furthermore, such as Figure 18 As shown, if the anti-shake coil 62 is installed on the second frame 20, the coil fixing part 21 is provided on the second frame 20, and the second sub-coil 627 cooperates with the coil fixing part 21. If the anti-shake coil 62 is installed on the first frame 10, the coil fixing part 21 is provided on the first frame 10, thereby realizing the installation.

[0120] In some embodiments, such as Figure 1 As shown, the drive device also includes an upper cover 100, which is adapted to be fastened to the second frame 20 to form a receiving space for accommodating and protecting other components, preventing foreign objects from entering the receiving cavity, so as to ensure the imaging effect of the camera module.

[0121] This application also provides a camera module, which includes an optical lens 200, a photosensitive component 300, and the aforementioned driving device. The photosensitive component 300 includes a photosensitive chip and is disposed on the light-emitting side of the optical lens 200 to receive the imaging light converged by the optical lens 200. The driving device is adapted to drive the optical lens 200 or the photosensitive chip to move in order to achieve optical focusing or optical image stabilization.

[0122] In some specific embodiments, the camera module, such as Figure 19 As shown, the optical lens 200 is held in the driving device, which drives the optical lens 200 to achieve optical focusing or optical image stabilization. The photosensitive component 300 is disposed on the light-emitting side of the optical lens 200 to receive the imaging light converged by the optical lens 200.

[0123] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A driving device, characterized in that, include: A first frame is used to directly or indirectly support an optical element having an optical axis; A second frame, wherein the first frame is movably disposed within the second frame; and At least one first driving component is adapted to drive the first frame to move relative to the second frame in a direction perpendicular to the optical axis. The first driving component includes at least one anti-shake coil and at least one anti-shake magnet disposed opposite to each other. One of the anti-shake coil and the anti-shake magnet is disposed in the first frame and the other in the second frame. The anti-shake coil includes a first effective segment and a second effective segment, which are respectively disposed on two adjacent sides of the anti-shake magnet. When the anti-shake coil is energized, the first effective segment and the anti-shake magnet generate a first driving force, and the second effective segment and the anti-shake magnet generate a second driving force. The first driving force and the second driving force together drive the anti-shake coil and the anti-shake magnet to undergo relative displacement in a direction perpendicular to the optical axis.

2. The driving device as described in claim 1, characterized in that, The second effective segment and the anti-shake magnet are arranged opposite each other along the optical axis, the first effective segment and the anti-shake magnet are arranged opposite each other along a first direction, the first driving force and the second driving force are in the same direction in the first direction, and the first direction is perpendicular to the optical axis.

3. The driving device as described in claim 2, characterized in that, The second effective segment is disposed on the top or bottom surface of the anti-shake magnet.

4. The driving device as described in claim 1, characterized in that, When the anti-shake coil is energized, the current direction of the first effective segment is opposite to the current direction of the second effective segment.

5. The driving device as described in claim 1, characterized in that, The anti-shake magnet has a first side opposite to the first effective segment and a second side opposite to the second effective segment. The first side is parallel to the optical axis, and the second side is perpendicular to the optical axis.

6. The driving device as described in claim 5, characterized in that, The first side has both an N-pole region and an S-pole region, while the second side has only an N-pole region or an S-pole region. The boundary between the first effective segment and the N-pole region and the S-pole region of the first side is arranged opposite to each other along a first direction perpendicular to the optical axis.

7. The driving device as claimed in claim 6, characterized in that, As the distance between the anti-shake magnet and the first effective segment increases, when viewed along the optical axis, the second effective segment moves closer to the center of the second side.

8. The driving device as described in claim 6, characterized in that, When the first effective segment is closest to the anti-shake magnet, the geometric center of the anti-shake magnet is located between the first effective segment and the second effective segment when viewed along the optical axis.

9. The driving device as claimed in claim 6, characterized in that, When the anti-shake coil is energized, the distance between the first effective segment and the anti-shake magnet along the first direction changes, while the distance between the second effective segment and the anti-shake magnet along the optical axis remains unchanged.

10. The driving device according to any one of claims 6-9, characterized in that, The image stabilization coil includes a first effective segment, a second effective segment, a first connecting segment, and a second connecting segment, wherein the first connecting segment and the second connecting segment are respectively used to connect the two ends of the first effective segment and the second effective segment.

11. The driving device as claimed in claim 10, characterized in that, The image stabilization coil is formed by bending a loop coil into an L-shaped coil. The bent portion of the loop coil forms the first connecting segment and the second connecting segment of the L-shape, and the unbent portion of the loop coil forms the first effective segment and the second effective segment, respectively.

12. The driving device as claimed in claim 11, characterized in that, The second frame is provided with a coil fixing part suitable for mounting the image stabilization coil. The coil fixing part extends from the bottom to the top of the second frame. A fixing window is formed between the first effective segment and the second effective segment. The coil fixing part is located in the fixing window, and the top of the coil fixing part abuts against the first effective segment along the optical axis.

13. The driving device as claimed in claim 12, characterized in that, The bottom of the coil fixing part is provided with a protrusion, which protrudes along a second direction and supports the second effective segment. The second direction is perpendicular to the first direction and is perpendicular to the optical axis direction.

14. The driving device according to any one of claims 1-9, characterized in that, The image stabilization coil includes a first sub-coil and a second sub-coil, wherein the first effective segment is a part of the first sub-coil and the second effective segment is a part of the second sub-coil.

15. The driving device as claimed in claim 14, characterized in that, The first sub-coil and the second sub-coil are arranged in an L-shape; the side of the first sub-coil away from the second sub-coil is the first effective segment, and the side closer to the second sub-coil is the first ineffective segment; the side of the second sub-coil away from the first sub-coil is the second effective segment, and the side closer to the first sub-coil is the second ineffective segment; the first ineffective segment and the second ineffective segment are opposite to each other along the optical axis.

16. The driving device according to any one of claims 1-9, characterized in that, The driving device includes two first driving components, which are located on adjacent sides of the first frame.

17. The driving device according to any one of claims 1-9, characterized in that, The driving device further includes a third frame for mounting the optical element and a second driving assembly. The third frame is movably disposed within the first frame. The second driving assembly includes a focusing coil and a focusing magnet. One of the focusing coil and the focusing magnet is disposed in the third frame and the other is disposed in the first frame. The second driving assembly is used to drive the third frame to move relative to the first frame along the optical axis.

18. The driving device as claimed in claim 17, characterized in that, The driving device further includes an image stabilization circuit board, a focusing circuit board, and a conductive lead-out insert. The image stabilization circuit board is located at the bottom of the second frame, and the image stabilization coil is electrically connected to the image stabilization circuit board. The focusing circuit board is located on the side of the second frame, and the focusing coil is electrically connected to the focusing circuit board. The conductive lead-out insert is embedded in the second frame, and the image stabilization circuit board and the focusing circuit board are electrically connected through the conductive lead-out insert.

19. The driving device as claimed in claim 18, characterized in that, The focusing circuit board includes a conductive fixing part, a conductive movable part, and at least one conductive connecting part. The two ends of the conductive connecting part are deformably connected to the conductive fixing part and the conductive movable part, respectively. The conductive movable part is located on the fourth side of the first frame. The first frame drives the conductive movable part to move in a direction perpendicular to the optical axis. The conductive fixing part is located on the first side of the first frame. The first side and the fourth side are adjacent sides. One end of the conductive connecting part is bent and connected to the conductive movable part on the fourth side. The other end of the conductive connecting part extends along the top of the second side and the top of the third side of the first frame to the first side and is bent and connected to the conductive fixing part on the first side.

20. A camera module, characterized in that, include: The drive device as described in any one of claims 1-19; An optical lens, which is held on the driving device; A photosensitive component for receiving light from the optical lens.

Images