Image sensor driver modules, optical components, camera modules and electronic devices

Abstract

The present application discloses an image sensor driving module, an optical assembly, a camera module and an electronic device. The image sensor driving module includes a driving unit, a fixed seat and a movable seat, and a partial structure on the bearing part and a partial structure on the fixed seat constitute a retaining structure. The fixed seat carries the fixing part of the driving unit, and the movable seat includes a bearing part, a fixing part and a connecting part, and the bearing part is used to carry the image sensor and the movable part of the driving unit. The retaining structure is used to provide a retaining force to the bearing part so that the bearing part and the fixed seat maintain contact. The present application can ensure the smooth movement of the image sensor and avoid axial vibration or tilt of the image sensor during movement.

Description

Technical Field

[0001] Possible implementation methods of the present application relate to the field of photographing technology, and in particular to an image sensor driving module, an optical component, a camera module and an electronic device. Background Art

[0002] When electronic devices with camera functions (such as mobile phones, tablet computers, etc.) are taking pictures, the pictures taken are often blurred, ghosted or blurry due to slight shaking. For example, when people hold objects, they generally have a certain degree of physiological shaking. When the image is taken, the human body is often in a moving state. These irregular, involuntary shaking or motion vibrations will cause the pictures to be blurred and the user experience is poor. Therefore, electronic devices with camera functions need to have automatic focus (AF) function and optical image stabilization (OIS) function.

[0003] During the design process of the camera module, consideration must be given to setting up a driving structure for driving the image sensor to move. The driving structure drives the image sensor to move and can adjust the specific position and posture of the image sensor to achieve the anti-shake function of the camera module.

[0004] With the trend of electronic devices becoming thinner and more multifunctional, the industry continues to explore how to design the drive structure of the image sensor to ensure the smooth movement of the image sensor and image quality during the design of the camera module. Summary of the invention

[0005] The present application provides an image sensor driving module, an optical component, a camera module and an electronic device, which can meet the stability of the movement of the image sensor and ensure the image quality.

[0006] In the first aspect, an embodiment of the present application provides an image sensor driving module, comprising a driving unit, a fixed seat and a movable seat, the driving unit comprising a fixed part and a movable part that can move relatively, the fixed seat is used to carry the fixed part, the movable seat comprises a bearing portion, a fixing portion and a connecting portion, the connecting portion is used to realize mechanical and electrical connection between the bearing portion and the fixing portion, the bearing portion is used to carry the image sensor and the movable part, the fixing portion is connected to the fixed seat, the bearing portion and the fixed seat are in contact with each other, a partial structure on the bearing portion and a partial structure on the fixed seat constitute a retaining structure, the retaining structure is used to provide a retaining force on the bearing portion, the driving unit is used to drive the bearing portion to move relative to the fixed seat, the direction of movement can be a direction perpendicular to the optical axis of the camera module, that is, the plane where the photosensitive surface of the image sensor is located or the direction of the plane parallel to the photosensitive surface, the bearing portion and the fixed seat are kept in contact by the retaining force of the retaining structure.

[0007] In conventional camera modules, the image sensor moving platform is suspended relative to the bottom plate of the module. The space between the moving platform and the bottom plate not only increases the size of the camera module in the optical axis direction, but also easily causes the tilt of the moving platform and vibration in the optical axis direction, resulting in a decrease in imaging quality. In addition, the air thermal resistance is large, and the heat of the image sensor and the driving circuit is not easy to dissipate, which will cause the image sensor junction temperature to be too high (for example, higher than 70 degrees, or even up to 90 degrees), resulting in too many image noise points in the image sensor, affecting the imaging quality. The present application sets a retaining structure to ensure the contact between the bearing part and the fixed platform, which can ensure that the image sensor does not move in the direction of the optical axis during movement, improve the stability of the image sensor movement process, and limit the image sensor movement route to a stable plane. It can avoid axial vibration or tilt of the image sensor during movement (that is, reduce the displacement of the image sensor in the optical axis direction and the crosstalk in the rotation direction of the image sensor), and ensure the quality and stability of the image data obtained by the image sensor. In the design scheme in which the image sensor moving platform is suspended relative to the bottom plate of the module, it is necessary to set a position detection sensor in the direction of the optical axis on the moving platform. Since the image sensor of the present application has no displacement in the direction of the optical axis, the present application does not need to be configured with a sensor for detecting the position in the direction of the optical axis, which can save the cost of the image sensor driving module, simplify the structure of the device configured on the movable seat, and is conducive to achieving a small size of the movable seat.

[0008] The present application can also reduce the thermal resistance between the bearing part and the fixing seat through the contact between the two. The heat on the bearing part can be better conducted to one side of the outer surface of the fixing seat through the contact relationship between the bearing part and the fixing part, thereby improving the thermal conductivity of the image sensor driving module, optimizing the heat dissipation efficiency of the image sensor and the driving unit, and avoiding the degradation of image quality due to excessive temperature of the camera module during video shooting or long-term photo taking.

[0009] In a possible implementation, the connection part constitutes at least part of the holding structure, and the connection part is an elastic structure, and the elastic force of the connection part acts on the bearing part to form the holding force. In this implementation, the elastic force of the connection part is used as the holding force to ensure the contact between the bearing part and the fixed seat, and it is necessary to add other holding structures in addition to the fixed seat and the movable seat. The connection part can not only ensure that the bearing part moves under the driving force of the driving unit, but also has the function of providing the holding force. The dual-function design of the connection part is conducive to the miniaturization of the image sensor driving module.

[0010] In a possible implementation, the connection between the connecting portion and the fixing portion is a first position, and the connection between the connecting portion and the bearing portion is a second position. There is elastic potential energy between the first position and the second position, and the elastic potential energy forms the holding force. This solution defines a specific method for forming the elastic force of the connecting portion. By forming elastic potential energy between the first position and the second position, the necessary assembly position of the connecting portion is utilized, which is conducive to ensuring the miniaturization of the image sensor driving module.

[0011] In a possible implementation, the fixed seat includes a fixed platform, the bearing portion contacts the inner surface of the fixed platform, the bearing portion is used to carry the image sensor to move on the inner surface of the fixed platform, the image sensor is located on the light-emitting side of the lens assembly of the camera module, the inner surface of the fixed platform is perpendicular to the optical axis of the camera module, the distance between the first position and the inner surface of the fixed platform in the direction of the optical axis is smaller than the distance between the second position and the inner surface of the fixed platform in the direction of the optical axis, and the elastic tension of the connecting portion acts on the second position to form the retaining force toward the fixed platform. This solution can provide a pulling force toward the fixed platform at the second position by determining the distance relationship between the first position, the second position and the fixed platform during the assembly of the movable seat, that is, to form a retaining force. The way in which the retaining force is formed in this solution is realized during the assembly process. For the connecting portion of the movable seat, there is no need to consider the formation of retaining force and make a special design of its structure during its manufacturing process, which can save manufacturing costs.

[0012] In other embodiments, the connection portion constitutes at least a partial holding structure, and the fixed portion and the bearing portion can be designed to be non-coplanar during the process of manufacturing the movable seat, and there is a height difference in the optical axis direction between the first position and the second position before assembly. During the assembly process, the first position and the second position can be assembled into a coplanar state, or during the assembly process, the specific physical position of the first position or the second position is adjusted to store energy in such a way that elastic potential energy is stored in the connection portion, and the force of this elastic potential energy on the bearing portion is a holding force toward the fixed platform. This solution is conducive to miniaturization of the size of the assembled image sensor drive module.

[0013] In a possible implementation, a magnetic member is provided on the bearing portion, and the magnetic member and the portion of the fixing seat for contacting the bearing portion constitute at least a portion of the retaining structure, and the portion of the fixing seat for contacting the bearing portion has a magnetic conductive material, and at least a portion of the retaining force is constituted by the magnetic attraction between the magnetic member and the fixing seat. This solution arranges a magnetic member on the bearing portion, designs the fixing platform to cooperate with the magnetic member to form a magnetic attraction, and uses the magnetic attraction as the retaining force, which can ensure the life and stability of the retaining force.

[0014] In a possible implementation, the magnetic member includes at least two magnets, and the at least two magnets are arranged on the bearing portion in a point-like distribution state and are adjacent to the outer edge of the bearing portion, and the outer edge of the bearing portion is the edge position of the bearing portion facing the fixed portion. Specifically, the number of magnets can be three or four. When there are three magnets, the three magnets can define a surface, which can ensure the surface contact of the contact surface between the bearing portion and the fixed seat. When there are four magnets, they can be symmetrically distributed at the four external corners of the image sensor, which is beneficial to ensure the smooth movement of the image sensor. This solution arranges the magnet at the outer edge of the bearing portion so that the magnet is as far away from the image sensor as possible, thereby reducing the influence of the magnetic field generated by the magnet on the image sensor.

[0015] In a possible implementation, the magnetic member includes at least two magnetic strips, each of which is in the shape of an elongated strip. The at least two magnetic strips are symmetrically distributed on the bearing portion and are adjacent to the outer edge of the bearing portion, and the outer edge of the bearing portion is the edge position of the bearing portion facing the fixed portion. The provision of the elongated magnetic strips can not only provide a greater magnetic attraction force, but also facilitate assembly and fixation. In the embodiment of the present application, the magnetic attraction force between the magnetic member provided on the bearing portion and the fixed seat needs to ensure that the bearing portion can maintain contact with the fixed seat during movement, and the magnetic attraction force must also be controlled within a preset range, that is, the magnetic attraction force cannot be too large. If the magnetic attraction force is too large, the driving unit may be unable to drive the bearing portion to move, or the efficiency of the movement of the bearing portion may be affected.

[0016] In a possible implementation, the movable member is a magnetic driving member, the fixed member is a coil driving member, the magnetic member includes the magnetic driving member, and the magnetic attraction between the magnetic driving member and the fixed seat constitutes at least part of the holding force. This solution uses the magnetic driving member to form a holding structure, which is conducive to the design of miniaturization of the image sensor drive module.

[0017] In a possible implementation, a magnetic member is provided on the fixing seat, part of the bearing part has a magnetic conductive material, part of the bearing part having the magnetic conductive material is a magnetic member, the magnetic member and the magnetic member constitute at least part of the retaining structure, the magnetic member is located at the contact surface between the fixing seat and the bearing part, and the retaining force is constituted by the magnetic attraction between the magnetic member and the magnetic member. In this solution, by arranging the magnetic member on a fixed platform and correspondingly arranging a magnetic member, such as a steel plate, on the bearing part, such a design can reduce the influence of the magnetic member on the driving unit and the image sensor, thereby ensuring the smooth movement of the image sensor and the quality of the generated image signal.

[0018] In a possible implementation, the magnetic component is located on the surface of the fixing seat away from the bearing portion, or the magnetic component is embedded in the interior of the fixing seat. The magnetic component is located on the surface of the bearing portion facing the fixing seat, and the magnetic component contacts the fixing seat to form a friction interface. The magnetic component is also used to carry the image sensor. The bearing portion includes a circuit board and a magnetic component. The magnetic component is fixed to the bottom surface of the circuit board to reinforce the strength of the circuit board. By arranging the magnetic component on the surface of the fixing seat away from the bearing portion, this scheme can maximize the distance between the magnetic component and the image sensor and the driving unit, which is beneficial to reduce the influence of the magnetic component on the driving unit and the image sensor, and ensure the smooth movement of the image sensor and the quality of the generated image signal. By embedding the magnetic component inside the fixed platform, the magnetic component and the fixed platform are combined into one, which does not affect the overall structure of the image sensor driving module, and also facilitates the assembly and positioning between the image sensor driving module and other structures in the electronic device.

[0019] In a possible implementation, the image sensor driving module includes an elastic member, one end of the elastic member is located at the bearing part, and the other end is located at the fixing seat, the elastic member constitutes at least part of the retaining structure, the elastic force applied by the elastic member to the bearing part is at least part of the retaining force, and the direction of the elastic force is toward the contact surface between the bearing part and the fixing seat. This solution provides a specific solution of the retaining structure, and the stability of the retaining force of the retaining structure can be improved by setting the elastic member. The elastic member and the connecting part can jointly constitute the retaining structure, that is, the retaining force provided by the connecting part and the retaining force of the elastic member are utilized, so that the contact between the bearing part and the fixing platform can be made more stable.

[0020] In a possible implementation, a friction interface is formed at the contact surface of the bearing portion and the fixing seat, and the friction coefficient of the friction interface is less than 0.3. The present application can ensure the smoothness of the movement of the image sensor on the basis of limiting the moving plane of the image sensor, reduce the friction resistance during the movement of the image sensor, and improve the efficiency of driving the image sensor to move by limiting the friction coefficient of the sliding friction between the bearing portion and the fixing seat.

[0021] In a possible implementation, at the position of the friction interface, the bearing part and / or the fixing seat includes an ultra-slip material layer, the ultra-slip material layer is a solid structure, and the friction coefficient of the friction interface is less than 0.3 through the ultra-slip material layer. The combination of the ultra-slip material layer with a solid structure and the bearing part and the fixing platform is easier to achieve, for example, they can be directly connected and fixed by a glue layer, and the assembly process has the advantage of being simple and easy.

[0022] In one possible implementation, a lubricating layer is provided between the bearing part and the fixed seat at the position of the friction interface, and the lubricating layer is an oily, grease-like or paste-like structure. The friction coefficient of the friction interface is less than 0.3 through the lubricating layer. This solution realizes a friction interface with a low friction coefficient by providing a lubricating layer with an oily, grease-like or paste-like structure between the bearing part and the fixed seat. Since the shape of the lubricating layer is not fixed, the lubricating layer is added to the contact surface between the bearing part and the fixed seat. The lubricating layer can be made smaller in size, which is conducive to miniaturization of the camera module in the optical axis direction. The design of the lubricating layer is also conducive to ensuring the flatness of the contact surface. It can be understood that the problem of flatness can be compensated by the lubricating layer to avoid vibration or tilt of the image sensor in the optical axis direction during movement.

[0023] In a possible implementation manner, the lubricating layer may include a rolling structure.

[0024] In a possible implementation, the friction coefficient of the friction interface is less than 0.3 by performing a surface treatment process on the contact surface between the bearing portion and the fixing seat. The surface treatment method can be: surface modification technology, such as polishing; surface alloying technology, such as carburizing and nitriding; surface conversion film (through chemical methods, the additive material reacts with the matrix to form a conversion film) technology, etc. The surface treatment method forms the friction interface X, and there is no need to add a super-slip material layer or a lubricating layer, so that a smaller size in the optical axis direction can be obtained.

[0025] In a possible implementation, the friction interface includes a material with thermal conductivity. The present application can reduce the thermal resistance at the friction interface, and the heat on the bearing part can be better conducted to one side of the outer surface of the fixing seat through the contact relationship between the bearing part and the fixing part, thereby improving the thermal conductivity of the image sensor driving module, optimizing the heat dissipation efficiency of the image sensor and the driving unit, and preventing the camera module from having a reduced image quality due to excessive temperature during video shooting or long-term photography.

[0026] In a possible implementation manner, the thermal conductivity of the friction interface is greater than 0.5 W / m·K. This solution is conducive to ensuring the performance of the image sensor and improving the quality of the image signal by limiting the thermal conductivity of the friction interface.

[0027] In a possible implementation manner, the contact between the bearing portion and the fixing seat is a contact between two planes, the plane on the bearing portion for contacting the fixing seat is a first plane, the plane on the fixing seat for contacting the bearing portion is a second plane, and both the first plane and the second plane are continuous and complete plane structures. This solution is conducive to heat conduction, and the larger the contact area between the bearing portion and the fixing seat, the higher the heat conduction efficiency. This solution can improve the heat dissipation capacity through the contact of the complete plane.

[0028] In a possible implementation, the contact between the bearing part and the fixing seat is a contact between a plane and an array of convex points. At the contact position between the bearing part and the fixing seat, the structural form of one of the bearing part and the fixing seat is a complete plane structure, and the structural form of the other of the bearing part and the fixing seat is an array of convex point structure. The array of convex point structure corresponds to all regional settings of the complete plane structure. This solution can solve the problem of position deviation in the direction of the optical axis caused by the flatness of the contact between planes through the contact between the array of convex point structure and the plane. The setting of the array of convex point structure makes it easier to control the flatness of the plane formed by the contact position between each convex point and the plane. During the relative movement, it can be smoother and the stability of the friction coefficient can be guaranteed.

[0029] In a possible implementation, the contact between the bearing part and the fixing seat is a contact between a plane and a plurality of convex points. At the contact position between the bearing part and the fixing seat, the structural form of one of the bearing part and the fixing seat is a complete plane structure, and the structural form of the other of the bearing part and the fixing seat is a plurality of convex point structures, and the plurality of convex point structures are arranged in a local area corresponding to the complete plane structure. This solution is conducive to adjusting the flatness at the friction interface position through the coordination of the convex point structure distributed at the local position and the plane, and the contact surface position of the fixed platform and the bearing part does not require a high manufacturing accuracy of the flatness, and can also meet the smoothness of the movement of the image sensor.

[0030] In a possible implementation manner, the contact between the bearing portion and the fixed seat is a contact between a plane and a protruding rib structure, and at the contact position between the bearing portion and the fixed seat, the structural form of one of the bearing portion and the fixed seat is a complete plane structure, and the structural form of the other of the bearing portion and the fixed seat is a protruding rib structure. Compared with the structure of the protruding point, the present solution can increase the contact area by setting the rib structure, which is helpful to reduce the pressure and avoid damage to the contacting surfaces due to friction during the relative movement, which affects the positioning accuracy in the direction of the optical axis. Compared with the structure of full plane contact, the rib structure can improve the movement in the direction of the optical axis caused by the flatness problem.

[0031] In a possible implementation, the movable seat is an integrated circuit board structure, the bearing portion includes a first area for bearing the movable part and other electronic devices, the dimension of the movable seat in the direction of the optical axis of the image sensor is the thickness of the movable seat, and the thickness of the first area, the thickness of the connecting portion and the thickness of the fixing portion are equal. The movable seat formed by the integrated circuit structure can save space for the image sensor driving module in the thickness direction, which is conducive to the miniaturized design of the image sensor driving module in the direction of the optical axis of the image sensor. In this implementation, the movable seat is formed by the integrated circuit board molding process, the manufacturing process is simple, the assembly is convenient, and the structural stability is better. The circuit layer in the movable seat is only routed in the same circuit board, which can ensure the stability of signal transmission and reduce signal loss.

[0032] In a possible implementation, the bearing portion includes a second area for fixing the image sensor, the first area is connected between the second area and the connecting portion, the thickness of the second area is less than that of the first area, the first area is arranged around the edge of the second area and together with the second area, forms a receiving space, the receiving space is used to receive the image sensor, and the contact surface between the first area and the fixing seat is coplanar with the contact surface between the second area and the fixing seat. This solution is beneficial to saving space in the optical axis direction by providing a groove on the bearing portion, the groove is used to accommodate the image sensor, and it is easy to achieve a small-size design in the optical axis direction.

[0033] In a possible implementation, the fixing seat includes a fixing platform and a fixing frame, the retaining force is used to keep the bearing part and the fixing platform in contact, the fixing frame is fixedly connected to the edge of the fixing platform, the fixing frame and the fixing platform form an enclosed space, the driving unit, the connecting part and part of the bearing part are located in the enclosed space, and the driving unit is located on the side of the bearing part away from the fixing platform. This solution defines the specific position layout of the driving unit, which is conducive to the design of a small size of the image sensor driving module.

[0034] In a possible implementation, the fixing seat includes a fixing platform, the retaining force is used to maintain contact between the bearing portion and the fixing platform, the driving unit is located between the bearing portion and the fixing platform, and the fixing member is fixed to the fixing platform. This solution defines a specific position layout of the driving unit, and uses a fixing platform to fix the fixing member, which is conducive to realizing a small-size design of the image sensor driving module.

[0035] In a possible implementation, the fixing seat includes a fixing frame, the fixing frame is fixedly connected to the edge of the fixing platform, the fixing portion is connected to the fixing frame, and the fixing portion and the fixing platform are separated by at least a portion of the fixing frame. This solution provides a specific structure for connecting the fixing portion of the fixing seat and the movable seat, which is conducive to the reasonable configuration of the structural layout in the image sensor driving module, and realizes the advantages of compactness and small size of the overall structure.

[0036] In a possible embodiment, the bearing part includes a first bearing platform and a second bearing platform, the first bearing platform is used to bear the image sensor, the first bearing platform contacts the fixed seat to form a contact surface, the direction perpendicular to the contact surface is the optical axis direction, the second bearing platform and the connecting part are stacked along the optical axis direction, and the movable part of the driving unit is fixed on the second bearing platform.

[0037] In a possible implementation, the first bearing platform and the connecting portion are interconnected as an integrated structure, and along the optical axis, the connecting portion is located between the second bearing platform and the contact surface. In this implementation, the bearing portion is designed as a two-plate structure (i.e., the first bearing platform and the second bearing platform), and the second bearing platform and the connecting portion are stacked, so that a small-sized design of the movable seat in a direction perpendicular to the optical axis can be achieved. When this solution is used in electronic equipment, it can save the board area of ​​the circuit board where the camera module is located.

[0038] In a possible implementation, the first bearing platform and the connecting portion are connected to the top surface and the bottom surface of the second bearing platform, respectively, and along the optical axis, the second bearing platform is located between the connecting portion and the contact surface. In this implementation, the bearing portion is designed as a two-plate structure (i.e., the first bearing platform and the second bearing platform), and the second bearing platform and the connecting portion are stacked, so that a small-sized design of the movable seat in a direction perpendicular to the optical axis can be achieved. When this solution is used in electronic equipment, it can save the board area occupied by the camera module on the circuit board.

[0039] In a possible implementation, the bearing portion includes a first plate and a second plate, the outer edge of the first plate and the connecting portion are interconnected to form an integrated structure, the inner edge of the first plate surrounds a receiving space, the first plate is used to bear the movable part, the second plate includes a first part and a second part, the first part is stacked with the first plate, the second part is located at the bottom of the receiving space, the second part is used to bear the image sensor so that the image sensor is contained in the receiving space, and the second plate is in contact with the fixing seat. This solution connects the image sensor via the second plate, bears the movable part via the first plate, and the image sensor is contained in the receiving space, which is conducive to achieving the size in the optical axis direction, so that the image sensor driving module can easily achieve a small-size architecture in the optical axis direction.

[0040] In a second aspect, an embodiment of the present application provides an optical component, comprising an axial motion drive module and an image sensor drive module described in any possible implementation manner of the first aspect, wherein the axial motion drive module is fixedly connected to the image sensor drive module, the image sensor drive module is used to drive the image sensor to move in a plane perpendicular to the optical axis, and the axial motion drive module is used to drive the lens module to move or tilt in an axial direction.

[0041] In a third aspect, an embodiment of the present application provides a camera module, comprising an image sensor, a lens assembly and the optical assembly described in the second aspect, wherein the lens assembly is fixed to the axial motion driving module, the image sensor is fixed to the image sensor driving module, and the lens assembly is located on the light incident side of the image sensor.

[0042] In a fourth aspect, an embodiment of the present application provides a camera module, comprising an image sensor, a lens assembly, and an image sensor driving module described in any possible implementation manner of the first aspect, wherein the image sensor is fixed to the image sensor driving module, and the lens assembly is located on the light incident side of the image sensor.

[0043] In a fifth aspect, an embodiment of the present application provides an electronic device, comprising a processor and the camera module described in the third aspect or the fourth aspect, wherein the processor is electrically connected to the camera module, and the processor is used to process an image signal output by the image sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a three-dimensional diagram of an electronic device provided by a possible implementation manner of the present application;

[0045] Figure 2 yes Figure 1 A perspective view of the electronic device shown in another direction;

[0046] Figure 3A is a stereoscopic diagram of a camera module provided by a possible implementation mode of the present application;

[0047] Figure 3B Shown is a three-dimensional cross-sectional view of a camera module provided by one embodiment of the present application;

[0048] Figure 4 is a three-dimensional exploded view of a camera module provided in a possible implementation manner of the present application;

[0049] Figure 5 is a three-dimensional exploded view of a camera module provided in a possible implementation manner of the present application;

[0050] Figure 6 is a three-dimensional diagram of an image sensor driving module provided by a possible implementation manner of the present application;

[0051] Figure 7 is a three-dimensional exploded view of an image sensor driving module provided by a possible implementation manner of the present application;

[0052] Figure 8 is a three-dimensional exploded view of an image sensor driving module provided by a possible implementation manner of the present application;

[0053] Fig. 9 is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application;

[0054] Fig. 10A yes Fig. 9 A partially enlarged cross-sectional view of the image sensor driving module shown;

[0055] Fig. 10B is a partially enlarged view of a cross-sectional view of an image sensor driving module provided in a possible implementation manner of the present application;

[0056] Fig.11A is a schematic diagram of a friction interface between a bearing portion and a fixed platform in an image sensor driving module provided in a possible implementation manner of the present application;

[0057] Fig. 11B is a schematic diagram of a friction interface between a bearing portion and a fixed platform in an image sensor driving module provided in a possible implementation manner of the present application;

[0058] Fig. 11C is a schematic diagram of a friction interface between a bearing portion and a fixed platform in an image sensor driving module provided in a possible implementation manner of the present application;

[0059] Fig.12 is a schematic diagram of a friction interface between a bearing portion and a fixed platform in an image sensor driving module provided in a possible implementation manner of the present application;

[0060] Fig.13 is a schematic diagram of a friction interface between a bearing portion and a fixed platform in an image sensor driving module provided in a possible implementation manner of the present application;

[0061] Fig.14 is a schematic diagram of a specific form of a contact surface between a bearing portion and a fixed plane in an image sensor driving module provided by a possible implementation manner of the present application;

[0062] Fig.15 is a schematic diagram of a specific form of a contact surface between a bearing portion and a fixed plane in an image sensor driving module provided by a possible implementation manner of the present application;

[0063] Fig.16 is a schematic diagram of a specific form of a contact surface between a bearing portion and a fixed plane in an image sensor driving module provided by a possible implementation manner of the present application;

[0064] Fig.17 is a schematic diagram of a specific form of a contact surface between a bearing portion and a fixed plane in an image sensor driving module provided by a possible implementation manner of the present application;

[0065] Fig.18 is a schematic diagram of a specific form of a contact surface between a bearing portion and a fixed plane in an image sensor driving module provided by a possible implementation manner of the present application;

[0066] Fig.19 is a schematic diagram of a specific form of a contact surface between a bearing portion and a fixed plane in an image sensor driving module provided by a possible implementation manner of the present application;

[0067] Fig. 20 is a schematic diagram of a specific architecture of a holding structure in an image sensor driving module provided by a possible implementation manner of the present application;

[0068] Fig.21 is a schematic diagram of a specific architecture of a holding structure in an image sensor driving module provided by a possible implementation manner of the present application;

[0069] Fig. 22 is a schematic diagram of a specific architecture of a holding structure in an image sensor driving module provided by a possible implementation manner of the present application;

[0070] Fig.23A is a schematic diagram of a specific architecture of a holding structure in an image sensor driving module provided by a possible implementation manner of the present application;

[0071] Fig. 23B is a schematic diagram of a specific architecture of a holding structure in an image sensor driving module provided by a possible implementation manner of the present application;

[0072] Fig.24 is a schematic diagram of a specific architecture of a holding structure in an image sensor driving module provided by a possible implementation manner of the present application;

[0073] Fig.25A is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application;

[0074] Fig.25B and Fig.25A The same embodiment as shown, Fig.25B The detailed structure of the first bearing area is indicated in FIG.

[0075] Fig.26 is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application;

[0076] Fig. 27 is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application;

[0077] Fig.28is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application;

[0078] Fig.29 is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application;

[0079] Fig.30 is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application;

[0080] Fig.31 It is a cross-sectional view of an image sensor driving module provided by a possible implementation manner of the present application. DETAILED DESCRIPTION

[0081] The following describes possible implementations of the present application in conjunction with the accompanying drawings in possible implementations of the present application.

[0082] See also Figure 1 , Figure 1 1 is a schematic diagram of the structure of the electronic device 1000 provided in some possible implementations of the present application. The electronic device may be a mobile phone, a tablet, a laptop, a television, a vehicle-mounted device, a wearable device, a video surveillance device, and other electronic products. The wearable device may be a smart bracelet, a smart watch, a wireless headset, augmented reality (AR) glasses, augmented reality helmets, virtual reality (VR) glasses, and virtual reality helmets. The possible implementations of the present application are described by taking the electronic device as a mobile phone as an example.

[0083] Please also read Figure 1 and Figure 2 , Figure 2 yes Figure 1 The schematic diagram of the structure of the electronic device 1000 shown in another angle. The electronic device 1000 includes a housing 100, a display screen 200, a front camera assembly 300, a rear camera assembly 400, a mainboard 500, a processor 600, a memory 700 and a battery 800. The display screen 200 is used to display images, and the display screen 200 can also integrate a touch function. The display screen 200 is mounted on the housing 100. The housing 100 may include a frame 1001 and a back cover 1002. The display screen 200 and the back cover 1002 are respectively mounted on opposite sides of the frame 1001. In this possible implementation, in the external space of the electronic device 1000, the space facing the display screen 200 is defined as the front of the electronic device 1000, and the space facing the back cover 1002 is the rear of the electronic device 1000.

[0084] In some possible implementations, the front camera assembly 300 is located inside the housing 100 and below the display screen 200. The display screen 200 is provided with a front camera hole 2001, and the front camera assembly 300 collects light in front of the electronic device 1000 through the front camera hole 2001 to achieve shooting. The front camera assembly 300 may include a camera module described in the following possible implementations, and may also include a camera module of other structures.

[0085] In some possible implementations, the back cover 1002 is provided with at least one rear camera hole 1003. The rear camera assembly 400 is located inside the housing 100, and the rear camera assembly 400 collects light from the rear of the electronic device 1000 through at least one rear camera hole 1003 to achieve shooting. In possible implementations of the present application, "at least one" includes two situations: one and more, more means more than two, and "more than" includes this number. The rear camera assembly 400 includes at least one camera module 4001, for example, it may include one or more of a standard camera module, a telephoto camera module, a wide-angle camera module, an ultra-telephoto camera module, and an ultra-wide-angle camera module. Exemplarily, the rear camera assembly 400 includes a standard camera, a wide-angle camera, and a periscope telephoto camera. The camera module 4001 of the rear camera assembly 400 may include the camera module described in the possible implementations below, and may also include a camera module of other structures.

[0086] In some possible implementations, the rear camera assembly 400 may further include a flash module 4002. The rear cover 1002 is provided with a flash hole 1004, and the flash module 4002 is located inside the housing 100, and emits light through the flash hole 1004.

[0087] In some possible implementations, the mainboard 500 is located inside the housing 100, and the processor 600 and the memory 700 are fixed to the mainboard 500. The display screen 200, the front camera assembly 300 and the rear camera assembly 400 are coupled to the processor 600. The memory 700 is used to store computer program codes. The computer program code includes computer instructions. The processor 600 is used to call computer instructions to enable the electronic device 1000 to perform corresponding operations, for example, to enable the display screen 200 to display the target image, to enable the front camera assembly 300 and the rear camera assembly 400 to capture the target image, etc. The battery 800 is electrically connected to the mainboard 500 for powering the electronic device 1000. In some possible implementations, the electronic device 1000 may also include one or more of functional modules such as an antenna module, a mobile communication module, a sensor module, a motor, a microphone module, a speaker module, etc., and these functional modules may be electrically connected to the processor 600 to transmit signals.

[0088] A possible implementation of the present application provides a camera module, which can be Figure 1 and Figure 2 In the illustrated embodiment, the front camera assembly 300 or the rear camera assembly 400, the camera module is electrically connected to the processor 600 in the electronic device. Specifically, the processor 600 is electrically connected to the image sensor in the camera module, and can drive the image sensor and process the image signal output by the image sensor.

[0089] Figure 3A FIG. 1 is a three-dimensional assembly diagram of a camera module 10 provided in one embodiment of the present application. Figure 3B FIG. 1 is a three-dimensional cross-sectional view of a camera module 10 provided in one embodiment of the present application. Figure 4 and Figure 5 Shown Figure 3A The camera module 10 is provided in two directions. Figure 3A , Figure 3B , Figure 4 and Figure 5 In one embodiment, the camera module 10 includes an image sensor driving module 2, a lens driving module 3, an image sensor 4 and a lens assembly 5. The lens driving module 3 and the image sensor driving module 2 constitute an optical assembly 80, and the image sensor driving module 2 is used to drive the image sensor 4 to move. The lens driving module 3 is used for optical focus, optical image stabilization, and aberration adjustment of the camera module 10.

[0090] In one embodiment, the image sensor 4 moves on a reference plane, and the reference plane can be coplanar or parallel to the photosensitive surface of the image sensor 4, and the reference plane can be a plane perpendicular to the extension direction of the optical axis P. The optical axis P can be understood as the optical axis of the image sensor 4, and can also be understood as the optical axis of the lens assembly 5, and can also be understood as the optical axis of the camera module 10. In the camera module, in theory, the optical axis of the lens assembly 5 and the optical axis of the image sensor 4 can coincide with each other. In the case of assembly errors or design tolerances, the optical axis of the lens assembly 5 and the optical axis of the image sensor 4 can also have a relative offset or tilt. However, regardless of whether they coincide or have an offset and tilt phenomenon, the extension direction of the optical axis of the lens assembly 5 and the optical axis of the image sensor 4 is consistent (the consistent extension direction can be understood as basically the same direction, allowing a small range of relative tilt), and can be regarded as the optical axis of the camera module 10.

[0091] In one embodiment, the lens driving module 3 includes a housing 31 and a driving assembly 32. The housing 31 is enclosed to form a receiving space, and the housing 31 is used to be fixedly connected to other functional modules (such as the image sensor driving module 2). The driving assembly 32 is accommodated in the receiving space of the housing 31, and the driving assembly 32 is used to drive the lens assembly 5 of the camera module 10 to move. Specifically, the driving assembly 32 of the lens driving module 3 is used to drive the lens assembly 5 to move or tilt in the axial direction (i.e., the direction in which the optical axis P extends), which can achieve optical image stabilization, optical focus, and aberration adjustment. Specifically, the lens driving module 3 can drive the lens assembly 5 to move axially to achieve optical focus of the camera module 10. The lens driving module 3 can also be used to compensate for other optical parameters of the camera module 10, such as aberrations, and the aberrations can be compensated by driving at least part of the lenses in the lens assembly 5 to move by the lens driving module 3. Figure 3B As shown, in one embodiment, the driving assembly 32 includes a magnetic driving member 321 and a coil driving member 322, the coil driving member 322 is connected to the lens assembly 5, and the magnetic driving member 321 is connected to the housing 31. When the coil driving member 322 is powered, the coil driving member 322 and the magnetic driving member 321 are coupled to generate an electromagnetic driving force to drive the lens assembly 5 to move. In the specific embodiment of the present application, the driving assembly 32 of the lens driving module 3 is shielded by the housing 31, and the driving assembly 32 of the lens driving module 3 does not participate in the driving of the image sensor driving module 2.

[0092] In this solution, the lens drive module 3 and the image sensor drive module 2 in the optical assembly 80 are two independent modular structures. The image sensor drive module 2 can match different types of lens drive modules 3 to form different drive schemes. The image sensor drive module 2 provided in this application can form a variety of different optical image stabilization schemes and has wide adaptability. During the assembly process of one embodiment, the image sensor 4 can be first fixed to the image sensor drive module 2, and then the lens drive module 3 can be fixed to the top surface of the image sensor drive module 2. Specifically, the lens drive module 3 and the image sensor drive module 2 can be fixedly connected by means of adhesive (glue layer 801). During the assembly process of another embodiment, the lens drive module 3 and the image sensor drive module 2 can also be fixedly connected as a whole to form an optical assembly 80, and then the image sensor 4 can be installed in this optical assembly 80. That is to say, the optical component 80 can be a modular structure independent of the image sensor 4 and the lens component 5. The assembly accuracy of the modular structure is easy to control and the production cost is low. In the process of assembling the optical component 80 with the image sensor 4 and the lens component 5, the assembly process can also be simplified, and the positioning accuracy of each optical element after assembly is high, which is conducive to ensuring the optical stability of the camera module.

[0093] The camera module 10 includes a circuit board 9 for electrically connecting to a processor on a mainboard in an electronic device. The circuit board 9 may be a flexible circuit board. The circuit board 9 may be a part of the image sensor driving module 2. The circuit board 9 is used to transmit the signal collected by the image sensor 4 to the processor. A driving circuit may also be provided on the circuit board 9. The driving circuit is used to drive the image sensor driving module 2 to realize the movement of the image sensor 4.

[0094] See also Figure 4 and Figure 5 In a specific embodiment, the image sensor driving module 2 includes a first top surface S1 and a first bottom surface S2 that are arranged opposite to each other. The first bottom surface S2 is planar and is used to connect with the mainboard or the middle frame bracket in the electronic device. The first top surface S1 is a frame-shaped structure, and the image sensor driving module 2 includes a first bearing area R1, and the first bearing area R1 is located inside the opening S11 formed by the first top surface S1, and the image sensor 4 is installed in the first bearing area R1 from this opening S11. An optical element 6, such as an IR filter, can also be installed in the first bearing area R1. The lens driving module 3 is a frame-shaped structure as a whole, and the area surrounded by the lens driving module 3 is located on the light incident side of the first bearing area R1 of the image sensor driving module 2, that is, facing the first bearing area R1 along the optical axis direction, and the opening S11 connects the first bearing area R1 and the area surrounded by the lens driving module 3. The area surrounded by the lens driving module 3 is used to install the lens assembly 5. In one embodiment, part of the lens assembly 5 can be located inside the opening S11. In one embodiment, part of the lens assembly 5 can also extend into the first bearing area R1. The lens driving module 3 includes a second bottom surface S3 and a second top surface S4 which are arranged opposite to each other, the second bottom surface S3 is the outer surface of the bottom plate of the housing 31, and the second top surface S4 is the outer surface of the top plate of the housing 31. The second bottom surface S3 can be fixed to the first top surface S1 by gluing the adhesive layer 801, and the second bottom surface S3 can also be fixed to the first top surface S1 by other connection methods, such as screw fixing, welding, etc.

[0095] In another embodiment provided by the present application, the camera module 10 may not be provided with a lens driving module, and only the image sensor driving module 2 is used to adjust the position of the image sensor 4 to achieve functions such as anti-shake or aberration compensation of the camera module 10, thereby providing a miniaturized and simple-structured camera module 10, which is applied in specific electronic devices and is beneficial to saving space and board area of ​​the electronic devices.

[0096] like Figure 3BAs shown, an image sensor driving module 2 provided in one embodiment of the present application includes a fixed seat 21, a driving unit 22 and a movable seat 23, wherein the driving unit 22 includes a fixed part 221 and a movable part 222 that can move relatively, for example, the fixed part 221 is a magnet, and the movable part 222 is a coil, and the movable part 222 interacts with the fixed part 221 to generate a driving force when it is energized. The fixed seat 21 is used to carry the fixed part 221, and the movable seat 23 is used to carry the movable part 222 and the image sensor 4. The fixed seat 21 includes a fixed platform 211 and a fixed frame 212. The fixed platform 211 includes a relative inner surface S0 and a first bottom surface S2, the fixed frame 212 is connected to the fixed platform 211 and protrudes from the inner surface S0, the fixed part 221 is fixed to the fixed seat 21, and the fixed frame 212 forms an opening S11 on a side away from the inner surface. The movable seat 23 and the inner surface S0 of the fixed platform 211 can be in contact with each other. The movable seat 23 includes a bearing part 231, a fixing part 232 and a connecting part 233, wherein the connecting part 233 is used to realize the mechanical and electrical connection between the bearing part 231 and the fixing part 232, the fixing part 232 is connected to the fixing seat 21, and the fixing part 232 and the fixing seat 21 are relatively fixedly connected, the bearing part 231 includes a second bearing area R2 and a first bearing area R1, the second bearing area R2 is located at the periphery of the first bearing area R1, the second bearing area R2 is used to bear the movable part 222, the first bearing area R1 is used to bear the image sensor 4, and the opening S11 is used to install the image sensor 4 to the first bearing area R1.

[0097] The present application designs the image sensor driving module 2 as a module architecture independent of the image sensor 4. After the image sensor driving module 2 is assembled into a whole, the image sensor 4 is assembled to the image sensor driving module 2 through the opening S11 position of the image sensor driving module 2. The present application decouples the image sensor driving module 2 and the image sensor 4, which is not only conducive to controlling the manufacturing accuracy of the image sensor driving module 2. Due to the manufacturing and assembly process of the image sensor driving module 2, the image sensor 4 is not assembled therein, and the manufacturing process of the image sensor driving module 2 has no effect on the performance of the image sensor 4. The testing process of the image sensor driving module 2 can also use a separate image sensor for testing. The image sensor driving module 2 is applied in the camera module to ensure the high-quality performance of the image sensor 4 in the camera module, and can also improve the manufacturing yield of the camera module and reduce costs.

[0098] The detailed structure of a specific image sensor driving module provided in the present application is described as follows. Figure 6 FIG. 1 is a three-dimensional assembly diagram of an image sensor driving module 2 provided in one embodiment of the present application. Figure 7 and Figure 8 Shown Figure 6 The provided image sensor driving module 2 is a three-dimensional exploded view in two directions. Fig. 9 Shown Figure 6 A cross-sectional view of the image sensor driving module 2 is provided. Fig. 9 As shown, in this embodiment, the fixing seat 21 is equivalent to the housing of the image sensor driving module 2, and the fixing frame 212 of the fixing seat 21 includes a side frame 2122 and a top plate 2121. The top plate 2121 and the inner surface S0 of the fixing platform 211 are arranged opposite to each other, and the side frame 2122 is connected between the top plate 2121 and the fixing platform 211, and forms an enclosed space 2120 with the top plate 2121 and the fixing platform 211. The driving unit 22, the connecting portion 233 and the second bearing area R2 are located in the enclosed space 2120. The opening S11 is formed by being surrounded by the top plate 2121.

[0099] Figure 6 The driving unit is inside the fixing base 21 and cannot be seen because it is blocked by the fixing base 21. The fixing base 21 can be used as a mounting carrier and can also protect the driving unit 22 and the movable base 23. The fixing base 21 can also be used as a structure for connecting the image sensor driving module 2 with other devices. For example, the image sensor driving module 2 can be installed on a circuit board in an electronic device, which can be achieved by the fixed connection between the fixing base 21 and the circuit board.

[0100] See also Figure 7 , Figure 8 and Fig. 9 In one embodiment, the fixed platform 211 is a flat plate structure, the fixed platform 211 is used to contact part of the movable seat 23, the inner surface of the fixed platform 211 can be a planar structure, the inner surface of the fixed platform 211 can be perpendicular to the optical axis direction of the image sensor 4, the inner surface of the fixed platform 211 can be parallel to the photosensitive surface of the image sensor 4, and the outer surface of the fixed platform 211 is the first bottom surface S2 of the image sensor driving module 2 (such as Figure 5 As shown). In one embodiment, the fixed platform 211 is made of metal material, or the fixed platform 211 has a magnetic conductive material, and the fixed platform 211 can be adsorbed by the magnetic attraction of the magnetic element. The fixed platform 211 is used to contact the part of the structure on the movable seat 23 that drives the image sensor 4 to move. The movable seat 23 drives the image sensor 4 to move on the fixed platform 211, and during the movement, the contact surface between the fixed platform 211 and the movable seat 23 remains in contact. The fixed platform 211 has a thermal conductive material and can be used as a heat dissipation structure to conduct heat generated by the image sensor and other electronic devices on the movable seat 23.

[0101] Specifically, the fixed platform 211 includes a central area 2111, a connection area 2112 and an edge area 2113. The central area 2111, the connection area 2112 and the edge area 2113 are coplanar, and the connection area 2112 is arranged around the periphery of the central area 2111 and connected between the edge area 2113 and the central area 2111. Figure 7 As shown, the fixed platform 211 can be an integrated flat plate structure, wherein the dotted frame schematically expresses the separation between the central area 2111, the connection area 2112 and the edge area 2113. The specific separation between these three parts needs to be defined according to their functions, as described below: the central area 2111 is used to contact with a part of the movable seat 23. In one embodiment, the part of the structure on the movable seat 23 that carries the image sensor 4 is frame-shaped (or ring-shaped), a part of the area of ​​the central area 2111 contacts the movable seat 23, a part of the area of ​​the central area 2111 is arranged opposite to the image sensor 4, and there is a gap between the central area 2111 and the image sensor 4. The edge area 2113 is used to connect the fixed frame 212.

[0102] In one embodiment, the fixed frame 212 includes a top plate 2121 and a side frame 2122. The top plate 2121 is a rectangular frame structure. The opening S11 formed by the top plate 2121 is used to install or accommodate optical elements (such as optical lenses) or as a light hole. The outer contour of the opening S11 formed by the top plate 2121 is larger than the outer contour of the image sensor, and it is convenient to install the image sensor on the movable seat 23 through the position of this opening S11.

[0103] The side frame 2122 is connected to the outer edge of the top plate 2121, and the side frame 2122 and the top plate 2121 together surround and form an enclosed space 2120. In the present embodiment, the fixing member 221 of the driving unit 22 is fixed to the inner side of the top plate 2121 and is located in the enclosed space 2120. In the present embodiment, the fixing member 221 is a magnetic driving member, and the fixing member 221 includes four bar magnets, and the four bar magnets are arranged opposite to each other in pairs. The top plate 2121 includes four borders, and each border is equipped with a bar magnet.

[0104] In one embodiment, the fixing frame 212 is provided with a magnetic conductive structure 2123. Figure 7In the illustrated embodiment, the magnetic conductive structure 2123 is disposed on the inner surface of the top plate 2121. In other embodiments, the magnetic conductive structure 2123 may also be disposed on the outer surface of the top plate 2121, or may be embedded in the middle layer of the top plate 2121. The fixing member 221 is mounted on the inner side of the magnetic conductive structure 2123, and the magnetic conductive structure 2123 is used to achieve magnetic shielding of the image sensor driving module 2. The magnetic conductive structure 2123 is made of a material having magnetic shielding properties. The shape of the magnetic conductive structure 2123 may be the same as that of the top plate 2121. The magnetic conductive structure 2123 may also be disposed on the top plate 2121 and the side frame 2122 at the same time, that is, the magnetic conductive structure 2123 constitutes a framework surrounding the space 2120, forming an all-round shielding of the magnetic environment inside the image sensor driving module 2. In one embodiment, the magnetic conductive structure 2123 may be a plate-like structure, such as a metal plate, and the metal plate may be fixed to the inner surface of the top plate 2121. In other embodiments, the magnetic conductive structure 2123 may also be a layer structure coated on the surface of the top plate, for example, a coating with a magnetic conductive function formed on the surface of the top plate 2121 by spraying or electroplating. The magnetic conductive structure 2123 may also be a mesh structure, having an electromagnetic shielding function, and may also have a grounding function. The present application can achieve magnetic shielding of the image sensor driving module 2 by providing a magnetic conductive structure 2123 in the fixed frame 212. When the driving unit 22 in the image sensor driving module 2 is in a magnetic driving mode, the magnetic conductive structure 2123 can ensure the stability of the driving signal of the driving unit 22, thereby improving the stability of the movement of the image sensor 4. Moreover, the grounding setting of the magnetic conductive structure 2123 can protect the electronic devices in the image sensor driving module 2, for example, to prevent static electricity from damaging the electronic devices.

[0105] In one embodiment, the fixing frame 212 may be an integrally formed structure, and the top plate 2121, the side frame 2122 and the magnetic conductive structure 2123 are formed into an integrated structure by a double-material injection molding process.

[0106] like Figure 8 As shown, a positioning structure 2125 is protrudingly provided on the inner surface of the top plate 2121 of the fixed frame 212. The positioning structure 2125 protrudes and extends from the inner surface of the top plate 2121 into the enclosed space 2120. The positioning structure 2125 is cylindrical, and the top plate 2121 is a rectangular structure. There are four positioning structures 2125 distributed at the four corners of the top plate 2121. The positioning structure 2125 is used to cooperate with the corresponding hole structure on the movable seat 23 to achieve assembly positioning between the fixed seat 21 and the movable seat 23. The precise alignment between the movable part 222 and the fixed part 221 of the drive unit 22 during the assembly process can be achieved through the cooperation of the positioning structure 2125 and the hole structure on the movable seat 23.

[0107] The driving unit 22 is used as a power source of the image sensor driving module to generate a driving force, and this driving force can drive the movable seat 23 to move relative to the fixed seat 21. In one embodiment, the driving unit 22 is a magnetic structure motor, such as a VCM (Voice Coil Motor), and the fixed part 221 and the movable part 222 are respectively a magnetic driving part and a coil driving part. Figure 7 In the illustrated embodiment, the fixed part 221 is a magnetic driving part, and the movable part 222 is a coil driving part. In another specific embodiment, the fixed part 221 is a coil driving part, and the movable part 222 is a magnetic driving part. In other embodiments, the drive unit 22 may also be other types of drives, such as: SMA (shape memory alloy), PIEZO (PiezoMotor). The movable part 222 and the fixed part 221 of the drive unit 22 in the embodiment of the present application may be two independent elements (such as the coil and magnet in a magnetic structure motor), which generate a driving force to drive the image sensor to move when powered on; the movable part 222 and the fixed part 221 of the drive unit 22 in the embodiment of the present application may also be an integrated structure, such as a shape memory alloy motor, which can be driven by changing the size of the material through power heating.

[0108] In one embodiment, no electrical connection parts or electronic devices are provided on the fixed seat 21, and all circuit traces, electronic devices and components that need to be powered in the camera module 10 are provided on the movable seat 23. The movable seat 23 is equivalent to the mainboard (or circuit board structure) in the camera module 10, and is used to carry all devices that need to be powered or transmit signals. Such a solution is conducive to the miniaturization design of the camera module 10, and is conducive to optimizing the signal transmission path and improving the stability of the signal. In particular, when the movable seat 23 is an integrated circuit board structure, the traces used to transmit signals or currents only need to be arranged in the integrated circuit board, and do not need to be transmitted between different circuit boards or FPCs. Such a signal and current transmission process can ensure signal stability, reduce signal loss, and easily achieve isolation between signals to prevent the quality of image signals from being affected by mutual interference of signals.

[0109] See also Figure 7 , Figure 8 and Fig. 9In one embodiment, the movable seat 23 includes a bearing portion 231, a fixing portion 232 and a connecting portion 233, and the connecting portion 233 is used to realize the mechanical connection and electrical connection between the bearing portion 231 and the fixing portion 232. Mechanical connection refers to the connection relationship in the structural form, which can include direct connection or indirect connection. The direct connection can also be an integrated structure. For example, the two parts of the integrated circuit board structure can be understood as a direct connection. The indirect connection refers to the connection through other connection structures, such as connecting two board structures through solder balls. Electrical connection refers to the connection of signal traces, and image signals, electrical signals or other signals can be transmitted through the electrical connection relationship, such as electrical connection through traces in the circuit board, or electrical connection through FPC, etc. The fixing portion 232 is connected to the fixing seat 21. Specifically, the fixing portion 232 can be connected between the fixing platform 211 and the fixing frame 212. In other embodiments, the fixing portion 232 can also be connected to the fixing frame 212, and the fixing portion 232 and the fixing platform 211 are separated by at least part of the fixing frame 212.

[0110] The movable seat 23 is provided with a hole structure 235, which is distributed at the corners of the movable seat 23. The hole structure 235 is used to cooperate with the positioning structure 2125 of the fixed seat 21 to achieve the positioning of the movable seat 23 and the fixed seat 21 during the assembly process, so as to ensure the positioning accuracy between the fixed part 221 and the movable part 222 of the driving unit 22. The hole structure 235 is distributed between the bearing part 231 and the connecting part 233, and is located outside the four corners of the bearing part 231.

[0111] The movable part 222 of the driving unit 22 is arranged on the bearing part 231. The bearing part 231 is also used to assemble the image sensor 4. Specifically, after the image sensor driving module 2 is assembled, the image sensor 4 is placed on the bearing part 231 from the opening S11 by using an assembly device, such as a chip mounter. During the assembly process, the image sensor 4 is fixed to the bearing part 231 and electrically connected to the bearing part 231. The image sensor 4 can be fixed to the bearing part 231 by adhesive, and then the circuits in the bearing part 231 of the image sensor 4 are electrically connected by gold wire. In other embodiments, the image sensor 4 can also be directly connected to the pads of the bearing part 231 by solder balls, and the electrical connection between the image sensor 4 and the circuits in the bearing part 231 is realized by solder balls and solder pads.

[0112] Specifically, see Figure 7 , Figure 8 , Fig. 9 and Fig. 10AThe fixed portion 232 of the movable seat 23 is assembled between the edge area 2113 of the fixed platform 211 and the side frame 2122 of the fixed frame 212. The outer edge of the fixed portion 232 is connected to the circuit board 9. The circuit board 9 can be an integrated structure with the fixed portion 232. The circuit board 9 can also be connected to the fixed portion 232 by plugging. Specifically, a male connector can be provided on the fixed portion 232, and a female connector can be provided on the circuit board 9. The transmission of electrical signals is achieved through the cooperation between the male connector and the female connector. The circuit board 9 is used to be electrically connected to the processor in the electronic device to transmit the signal of the image sensor 4 to the processor. The bearing portion 231 and the fixed platform 211 are stacked. The central area of ​​the bearing portion 231 surrounds the receiving space 2310. The receiving space 2310 is used to receive the image sensor 4. In other embodiments, the receiving space 2310 can also be used to receive other optical elements 6 (such as filters or lenses) or as a light passage (that is, no optical elements are placed, but it is located on the light incident side of the image sensor 4). As shown in FIG. Figure 7 As shown, the electronic device 7 is provided on the surface of the bearing part 231 facing away from the fixed platform 211. The electronic device 7 is distributed on the bearing part 231 on opposite sides of the receiving space 2310. In order to ensure the structural symmetry of the movable seat 23, the electronic device 7 can be symmetrically distributed on both sides of the receiving space 2310, which is conducive to ensuring the smooth movement of the movable seat 23. In one embodiment, the electronic device 7 and the movable part 222 of the driving unit 22 are installed on the same surface of the bearing part 231, that is, installed on the surface of the top plate 2121 of the bearing part 231 facing the fixed frame 212. In this way, the electronic device 7 and the movable part 222 on the bearing part 231 are both accommodated in the surrounding space 2120 in the fixed frame 212 (such as Figure 8 and Fig. 10A shown).

[0113] like Fig. 9 As shown, the movable member 222 is fixed to the side of the second bearing area R2 of the bearing part 231 away from the fixed platform 211, and the movable member 222 faces the top plate 2121. Specifically, in this embodiment, the movable member 222 of the drive unit 22 is a coil drive member, and the movable member 222 includes four coils arranged opposite to each other in pairs, and all the coils are arranged one by one corresponding to the four magnets fixed on the top plate 2121. The coils are arranged on the bearing part 231, and the bearing part 231 is provided with circuit wiring, which makes it easy to realize the layout of the power supply line of the coil. In one embodiment, refer to Figure 7 , Figure 8 , Fig. 9 and Fig. 10AA supporting structure 8 is provided on the bearing portion 231, and the movable part 222 surrounds the supporting structure 8, that is, a supporting structure 8 is provided in each coil, and the supporting structure 8 is a rigid structure and is protrudingly provided on the surface of the bearing portion 231. It can be understood that the coil is provided around the supporting structure 8, and the supporting structure 8 can protect the coil from being scratched by other structures.

[0114] In the present application, the driving unit 22 drives the bearing portion 231 to move, while the position of the fixed portion 232 remains unchanged. In this way, during the movement of the bearing portion 231, the connecting portion 233 undergoes elastic deformation. The connecting portion 233 is connected between the fixed portion 232 and the bearing portion 231. In terms of mechanical connection, the connecting portion 233 is equivalent to the structure of a spring or a spring. A circuit board trace for transmitting signals and currents is also provided on the connecting portion 233. The electrical connection between the bearing portion 231 and the fixed portion 232 is achieved through the circuit board trace, so that the signal on the image sensor 4 can be transmitted to the outside of the image sensor driving module 2. The connecting portion 233 is a slender strip-shaped elastic arm structure connected between the fixed portion 232 and the bearing portion 231. Specifically, a plurality of strip-shaped elastic arms, namely the connecting portion 233, are formed by removing material from the movable seat 23. The connecting portion 233 has the ability of elastic deformation due to the shape of the material itself. When the bearing portion 231 is moved relative to the fixed portion 232 by the driving force of the driving unit 22, the connecting portion 233 can undergo elastic deformation to maintain the mechanical and electrical connection between the fixed portion 232 and the bearing portion 231. In the implementation manner of the present application, the driving unit 22 can drive the image sensor 4 to move along the X-axis direction and the Y-axis direction. The X-axis and Y-axis directions are both perpendicular to the optical axis direction of the image sensor 4. When the optical axis direction is regarded as the Z-axis, the X-axis direction, the Y-axis direction and the optical axis direction can construct a three-axis rectangular coordinate system, that is, the driving unit 22 drives the image sensor 4 to move on a plane perpendicular to the optical axis and along the X-axis and Y-axis directions that are perpendicular to each other. During the movement of the bearing portion 231, the connecting portion 233 produces elastic deformation to ensure that the bearing portion 231 can move relative to the fixed portion 232.

[0115] In one embodiment, the movable seat 23 may be an elastic circuit board structure, the bearing portion 231 and the fixing portion 232 are not elastic, and the connecting portion 233 is elastic. Fig. 10A , Fig. 10A for Fig. 9Schematic diagram of a partial enlargement. The connecting portion 233 includes a wire layer 2333 and a metal layer 2334. The wire layer 2333 is used to set the circuit board routing to achieve electrical connection between the bearing portion 231 and the fixing portion 232. The metal layer 2334 can be a metal flexure structure. The metal layer 2334 is used to provide elastic deformation of the connecting portion 233. The existence of the metal layer 2334 ensures the flexibility and strength of the connecting portion 233, and improves the elastic deformation capability of the connecting portion 233. The wire layer 2333 and the metal layer 2334 can be isolated by an insulating layer ( Fig. 10A The insulating layer is omitted in the figure), and the insulating layer can specifically be a polyamide insulating material.

[0116] See also Figure 7 , Figure 8 , Fig. 9 and Fig. 10A The movable seat 23 includes an integrated circuit board structure 23A and a reinforcing plate structure 23B. The integrated circuit board structure 23A includes a fixing portion 232, a connecting portion 233 and a partial bearing portion (referred to as the first plate 231A). The integrated circuit board structure 23A is a structure integrally formed by a circuit board manufacturing process, wherein a conductor layer 2333 and a metal layer 2334 are provided. The metal layer 2334 is used to ensure the strength and elastic deformation capability of the connecting portion 233. The reinforcing plate structure 23B is a partial bearing portion (referred to as the second plate). The reinforcing plate structure 23B is connected to the bottom surface of the partial bearing portion (the first plate 231A) of the integrated circuit board structure 23A.

[0117] The reinforcing plate structure 23B is used to contact with the fixed platform 211, to form a friction interface X, and to conduct heat and dissipate heat. In summary, in this embodiment, the bearing portion 231 includes a first plate 231A and a second plate (reinforcing plate structure 23B), the outer edge of the first plate 231A and the connecting portion 233 are interconnected to form an integrated structure, the inner edge of the first plate 231A surrounds and forms a receiving space 2310, the first plate 231A is used to carry the movable member 222, the second plate (reinforcing plate structure 23B) includes a first portion 23B1 and a second portion 23B2, the first portion 23B1 is stacked with the first plate 231A, the second portion 23B2 is located at the bottom of the receiving space 2310, the second portion 23B2 is used to carry the image sensor 4 so that the image sensor 4 is accommodated in the receiving space 2310, and the second plate (reinforcing plate structure 23B) is in contact with the fixed platform 211 of the fixing seat 21. The first part 23B1 of the second plate (reinforcement plate structure 23B) is connected to the first plate 231A by a glue layer, and the second part 23B2, the first part 23B1 and the first plate 231A are stacked, and the second part 23B2 is located between the receiving space and the image sensor 4 and connected by a glue layer. Fig. 9 As shown, the image sensor 4 is electrically connected to the first board 231A through a signal line 41 (e.g., a gold wire), and an adhesive structure 61 is provided at the position of the signal line 41. This part of the adhesive structure 61 is used to fix the optical element 6, such as an IR filter. On the one hand, the adhesive structure 61 can fix the optical element 6, and on the other hand, the adhesive structure 61 can also fix the signal line 41 to ensure the stability and reliability of the electrical connection between the image sensor 4 and the wire layer 2333 of the carrier 231. In this solution, the signal of the image sensor is transmitted through the first board, the connecting part, and the fixing part.

[0118] Along the optical axis, the portion of the second plate (reinforcement plate structure 23B) facing the opening S11 and the portion of the first plate 231A facing the opening S11 together constitute the first bearing area R1 (eg, Fig. 9 The portion marked as R1 between the two dotted lines represents the first bearing area R1 of the bearing portion 231, and the portion directly opposite to the first plate 231A and the top plate 2121 is the second bearing area R2 of the bearing portion 231 (such as Fig. 9 The portion marked as R2 between the two dotted lines represents the second bearing area R2 of the bearing portion 231). The opening S11 of the image sensor driving module 2 provided in this solution is opposite to the first bearing area R1. During the assembly of the image sensor 4, the image sensor 4 is directly fixed by the suction of the suction cup, and the image sensor 4 is placed in the first bearing area R1 by moving the suction cup along the optical axis, and then the image sensor 4 and the bearing portion 231 are fixedly connected. In other embodiments, the opening S11 can also be staggered with the first bearing area R1. It can be understood that part of the first bearing area R1 is opposite to the opening S11, while part of the first bearing area R1 is not opposite to the opening S11. In this embodiment, during the assembly of the image sensor, the image sensor can be fixed with a suction cup, and the image sensor is placed in the area corresponding to the opening S11 along the optical axis, and then the suction cup is moved in a direction perpendicular to the optical axis to transport the image sensor to the first bearing area.

[0119] Fig. 10B FIG. 1 is a partially enlarged cross-sectional view of an image sensor driving module provided by a possible implementation of the present application. Fig. 10B There is a gap G between the movable seat 23 and the inner surface S0 of the fixed platform 211, which can be understood as: the movable seat 23 and the inner surface S0 of the fixed platform 211 are suspended and spaced apart.

[0120] See also Fig. 9 and Fig. 10A, the bearing part 231 contacts the fixed platform 211 of the fixed seat 21, and a friction interface X is formed at the contact position between the two, and the friction coefficient of the friction interface X is less than 0.3. The friction interface X can be the contact surface between the bearing part 231 and the fixed seat 21 (that is, the friction interface is in the form of a surface). The friction interface X can also be a medium between the bearing part 231 and the fixed seat 21, such as lubricating oil (that is, the friction interface is in the form of grease or paste). The friction interface X can also be a layer structure between the bearing part 231 and the fixed seat 21, for example, a super-slip material layer is provided between the bearing part 231 and the fixed seat 21 to form the friction interface X (that is, the friction interface is in the form of a three-dimensional layer structure). In summary, the bearing part 231 and the fixed platform 211 are in a sliding friction relationship, and a low friction coefficient can be obtained at the friction interface X by providing a solid structural layer, a grease or paste-like lubricating layer or a surface treatment. In a possible embodiment, the lubricating layer may include a rolling structure. By limiting the friction coefficient of the sliding friction between the bearing portion 231 and the fixed platform 211, the present application can ensure the smoothness of the movement of the image sensor 4 on the basis of limiting the moving plane of the image sensor 4, reduce the friction resistance during the movement of the image sensor 4, and improve the efficiency of driving the image sensor 4 to move.

[0121] In one embodiment, at the position of the friction interface X, the bearing portion 231 and / or the fixed platform 211 of the fixed seat 21 includes a super-slip material layer, the super-slip material layer is a solid structure, and the friction coefficient of the friction interface X is less than 0.3 through the super-slip material layer. Fig.11A , only the surface of the bearing part 231 is provided with the super-slip material layer M1, and the super-slip material layer M1 on the surface of the bearing part 231 contacts the surface of the fixed platform 211 of the fixed seat 21, forming a friction interface X and achieving a friction coefficient of the friction interface X less than 0.3. This solution does not require the super-slip material layer to be provided on the fixed seat 21, which is conducive to saving super-slip material and reducing costs. In the second case, refer to Fig. 11B , only the surface of the fixed platform 211 of the fixed seat 21 is provided with the super-slippery material layer M2, and the area of ​​the super-slippery material layer M2 provided on the fixed platform 211 of the fixed seat 21 needs to be larger than the area of ​​the part of the bearing part 231 that contacts the fixed platform 211, because the bearing part 231 needs to slide on the super-slippery material layer M2. The super-slippery material layer M2 provided in this solution needs to consider the area covered by the bearing part during the movement process. Since the fixed platform 211 of the fixed seat 21 is a simple flat plate structure, no circuit structure is provided on it, and the super-slippery material layer M2 is provided on the fixed platform 211, which has the advantage of being easy to manufacture. In the third case, refer to Fig. 11C, the surfaces of the bearing part 231 and the fixed platform 211 of the fixed seat 21 are both provided with super-slippery material layers, that is, the surface of the bearing part 231 is provided with super-slippery material layer M1, and the surface of the fixed platform 211 is provided with super-slippery material layer M2, the super-slippery material layer M1 is in contact with the super-slippery material layer M2, and the area of ​​the super-slippery material layer M2 is larger than the area of ​​the super-slippery material layer M1. This solution combines the first case and the second case, and forms a friction interface X between the super-slippery material layer M1 and the super-slippery material layer M2. The friction coefficient of the friction interface X provided by this solution can be smaller. The combination between the super-slippery material layer of the solid structure and the bearing part 231 and the fixed platform 211 is easier to realize, for example, it can be directly connected and fixed by a glue layer, and has the advantage of being simple and easy in terms of assembly process.

[0122] Fig.11A , Fig. 11B and Fig. 11C In the illustrated embodiment, the ultra-slippery material layer M1 and the ultra-slippery material layer M2 may be a coating or plating structure disposed on the surface of the bearing portion 231 and the fixed platform 211, that is, formed by a physical spraying or electroplating process. The ultra-slippery material layer M1 and the ultra-slippery material layer M2 may also be a separate sheet structure, for example, the ultra-slippery material layer M1 and the ultra-slippery material layer M2 are micro-nano structures (nano materials), and are connected to the surface of the bearing portion 231 and the fixed platform 211 by a manufacturing process such as pasting or physical pressing.

[0123] In one embodiment, see Fig.12 , at the position of the friction interface X, a lubricating layer M3 is provided between the bearing part 231 and the fixed platform 211 of the fixing seat 21, and the lubricating layer M3 is an oily, grease-like or paste-like structure, and the friction coefficient of the friction interface X is less than 0.3 through the lubricating layer M3. This solution realizes a friction interface X with a low friction coefficient by providing a lubricating layer M3 with an oily, grease-like or paste-like structure between the bearing part 231 and the fixed platform 211 of the fixing seat 21. Since the shape of the lubricating layer M3 is not fixed, the lubricating layer M3 is added to the contact surface between the bearing part 231 and the fixed platform 211 of the fixing seat 21. The lubricating layer M3 can be made into a smaller size, which is conducive to miniaturization of the camera module in the optical axis direction. The design of the lubricating layer M3 is also conducive to ensuring the flatness of the contact surface. It can be understood that the problem of flatness can be compensated by the lubricating layer M3 to avoid vibration or tilt in the optical axis direction of the image sensor 4 during movement.

[0124] In one embodiment, see Fig.13No super-slip material layer or lubricant is provided between the bearing part 231 and the fixed platform 211 of the fixing seat 21. In this embodiment, the friction coefficient of the friction interface X is less than 0.3 by performing surface treatment on the contact surface between the bearing part 231 and the fixed platform 211 of the fixing seat 21. The surface treatment method can be: surface modification technology, such as polishing; surface alloying technology, such as carburizing and nitriding; surface conversion film (through chemical methods, the additive material reacts with the matrix to form a conversion film) technology, etc. The surface treatment method forms the friction interface X, and there is no need to add a super-slip material layer or a lubricating layer, so that a smaller size in the optical axis direction can be obtained.

[0125] In other embodiments, a solid super-slip material layer, grease or paste-like lubricant may be used in combination in the same embodiment, or a solid super-slip material layer and a surface obtained by a surface treatment manufacturing process may be used in the same embodiment, or grease or paste-like lubricant and a surface obtained by a surface treatment manufacturing process may be used in the same embodiment.

[0126] The present application realizes a sliding connection with a low friction coefficient between the bearing part 231 and the fixed seat 21 by setting the friction coefficient of the friction interface X of the contact surface between the bearing part 231 and the fixed seat 21. In the process of driving the bearing part 231 of the movable seat 23 to move, the friction interface X with a low friction coefficient such as a super-slip material or a lubricating layer can be used to realize the flexible driving of the image sensor 4, and the stability of the axial position of the image sensor 4 during the movement is ensured, and no axial displacement, vibration or tilting or the like occurs. The contact between the bearing part 231 and the fixed seat 21 is also conducive to heat conduction. The circuit, coil drive component and image sensor on the bearing part 231 will generate heat during operation. In the embodiment of the present application, heat conduction can be carried out through the contact between the bearing part 231 and the fixed seat 21. The friction interface X includes a material with thermal conductivity. The bearing part 231 can be a thermally conductive material, and the fixed platform 211 of the fixed seat 21 can also be a thermally conductive material. The thermal conductivity of the friction interface X is greater than 0.5W / m·K. The present solution is conducive to ensuring the performance of the image sensor and improving the quality of the image signal by limiting the thermal conductivity of the friction interface.

[0127] In the camera module, if the image sensor moving platform is suspended relative to the bottom plate of the module, the space between the moving platform and the bottom plate not only increases the size of the camera module in the optical axis direction, but also easily causes the moving platform to tilt and vibrate in the optical axis direction, resulting in a decrease in imaging quality. In addition, the air thermal resistance is large, and the heat of the image sensor and the driving circuit is not easy to dissipate, which will cause the image sensor junction temperature to be too high (for example, higher than 70 degrees, or even up to 90 degrees), resulting in excessive image sensor imaging noise, affecting the imaging quality. An embodiment of the present application can ensure the smooth movement of the image sensor 4 through the contact between the bearing part 231 and the fixed platform 211, and limit the moving route of the image sensor 4 to a fixed (stable) plane (for example, a plane perpendicular to the optical axis), so as to avoid axial vibration or tilt of the image sensor 4 during the movement, and ensure the quality and stability of the image data obtained by the image sensor 4. Moreover, the present application can also reduce thermal resistance. The heat on the bearing part can be better conducted to one side of the outer surface of the fixing seat 21 through the contact relationship between the bearing part and the fixing part, thereby improving the thermal conductivity of the image sensor driving module 2, optimizing the heat dissipation efficiency of the image sensor 4 and the driving unit 22, and preventing the camera module 10 from having a reduced image quality due to excessive temperature during video shooting or long-term photography. In a specific embodiment provided by the present application, the working junction temperature of the image sensor 4 can be controlled below 70 degrees, for example, the working structure of the image sensor can be less than 50 degrees.

[0128] See also Fig.14 , Fig.14 It represents the specific structural form of the contact surface between the bearing part 231 and the fixed platform 211. In this embodiment, the contact between the bearing part 231 and the fixed platform 211 of the fixed seat 21 is the contact between planes. This solution is conducive to heat conduction. The larger the contact area between the bearing part 231 and the fixed seat 21, the higher the heat conduction efficiency. This solution can improve the heat dissipation capacity through the contact of the complete plane. The plane on the bearing part 231 used to contact the fixed seat 21 is the first plane S5, and the plane on the fixed platform 211 of the fixed seat 21 used to contact the bearing part 231 is the second plane S6. The first plane S5 and the second plane S6 are both continuous and complete plane structures.

[0129] See also Fig.15 , Fig.15It shows the specific structural form of the contact surface between the bearing part 231 and the fixed platform 211. The contact between the bearing part 231 and the fixed platform 211 of the fixing seat 21 is a contact between a plane and an array of convex points. At the contact position between the bearing part 231 and the fixed platform 211, the structural form of one of the bearing part 231 and the fixed platform 211 is a complete plane structure, and the structural form of the other of the bearing part 231 and the fixed platform 211 is an array of convex point structure. Fig.15 As shown, the bearing part 231 includes an array-type convex point structure S51, and the structure in contact between the fixed platform 211 and the bearing surface 231 is the second plane S6, and the array-type convex point structure S51 corresponds to all the regional settings of the second plane S6. This solution can solve the problem of position deviation in the direction of the optical axis caused by the flatness of the contact between the planes through the contact between the array-type convex point structure S51 and the second plane S6. The setting of the array-type convex point structure S51 makes it easier to control the flatness of the plane formed by the contact position of each convex point and the plane. In the process of relative movement, it can be more stable and the stability of the friction coefficient can be guaranteed. Fig.15 In the illustrated embodiment, the array-type bump structure S51 may also be disposed on the fixed platform 211 , and correspondingly, the second plane S6 is disposed on the carrying portion 231 .

[0130] See also Fig.16 , Fig.16 2 shows the specific structural form of the contact surface between the bearing part 231 and the fixed platform 211. The contact between the bearing part 231 and the fixed platform 211 of the fixing seat 21 is a contact between a plane and a plurality of convex points. At the contact position between the bearing part 231 and the fixed platform 211, the structural form of one of the bearing part 231 and the fixed platform 211 is a complete plane structure, and the structural form of the other of the bearing part 231 and the fixed platform 211 is a plurality of convex point structure. Fig.16 As shown, a plurality of protrusion structures S52 are provided on the bearing portion 231, and the structure where the fixed platform 211 contacts the bearing surface 231 is a second plane S6. The plurality of protrusion structures S52 are provided corresponding to local areas of the second plane S6. In the present embodiment, the second plane S6 is rectangular in shape, and the plurality of protrusion structures S52 are provided corresponding to the four corner positions of the second plane S6. In other embodiments, the plurality of protrusion structures S52 may also be provided corresponding to other positions of the second plane S6, for example, corresponding to the midpoint positions of the respective sides of the second plane S6, or a plurality of protrusion structures S52 may be distributed corresponding to each side. Fig.16In the embodiment shown, a plurality of convex point structures S52 may also be arranged on the fixed platform 211, and correspondingly, the second plane S6 is arranged on the bearing portion 231. This solution is conducive to adjusting the flatness at the friction interface position through the cooperation of the locally distributed convex point structures S52 and the plane, and the contact surface position of the fixed platform 211 and the bearing portion 231 does not require a high manufacturing accuracy of flatness, and can also meet the stability of the movement of the image sensor 4.

[0131] See also Fig.17 , Fig.18 and Fig.19 , these three figures represent three different specific structural forms of the contact surface between the bearing portion 231 and the fixed platform 211. In one embodiment, the contact between the bearing portion 231 and the fixed platform 211 of the fixed seat 21 is the contact between a plane and a protruding rib structure, or the contact between a protruding rib structure and a protruding rib structure. Compared with the structure of the protruding point, the contact area can be increased by setting the rib structure, which is helpful to reduce the pressure and avoid damage to the contacting surfaces due to friction during the relative movement, which affects the positioning accuracy in the direction of the optical axis. Compared with the structure of full plane contact, the rib structure can improve the movement in the direction of the optical axis caused by the flatness problem.

[0132] like Fig.17 As shown, at the contact position between the bearing portion 231 and the fixed platform 211 of the fixed seat 21, the structural form of the bearing portion 231 is a protruding rib structure S53, and the structural form of the fixed platform 211 is a complete plane structure S6. The protruding rib structure S53 slides on the plane structure S6 to realize the friction interface. In this embodiment, the protruding rib structure S53 is distributed in a ring shape. Fig.18 As shown, the structural form of the bearing portion 231 is also a protruding rib structure S53. Fig.17 The embodiment shown differs in that Fig.18 The protruding rib structures S53 in the illustrated embodiment are distributed in a mesh shape.

[0133] like Fig.19 As shown, at the contact position between the bearing portion 231 and the fixed platform 211 of the fixing seat 21, the structural form of the fixed platform 211 is a protruding rib structure S54. In this solution, the structural form of the bearing portion 231 can be a planar structure S7. The structural form of the bearing portion 231 can also be a rib-like structure. In other embodiments, a protruding rib structure can also be provided on the bearing portion 231, and the fixed platform 211 can be provided as a planar structure.

[0134] Figures 14 to 19The schematic description of several different structural morphologies of friction interfaces is not a limitation on the structural morphology of the friction interface of the present application. The present application can design friction interfaces of different structural morphologies according to specific design requirements.

[0135] See also Fig. 10A , the present application provides a movable platform for the bearing part 231 by making the bearing part 231 and the fixed platform 211 slide in contact, and the bearing part 231 will not leave the fixed platform 211 during the movement, so that the bearing part 231 needs to have a holding force that can keep the bearing part 231 in contact with the fixed platform 211. Specifically, the image sensor driving module 2 is provided with a holding structure, part of the holding structure is located on the bearing part 231 (it can be understood that part of the holding structure is a partial structure on the bearing part), and part of the holding structure is located on the fixed seat 21 (it can be understood that part of the holding structure is a partial structure on the fixed seat), and the holding structure provides a holding force on the bearing part 231, and the holding force is used to keep the bearing part 231 in contact with the fixed platform 211 of the fixed seat 21. The setting of the holding structure can be achieved through a variety of different implementation schemes, which are described in detail as follows.

[0136] In one embodiment, if Fig. 10A As shown, the holding structure 26 is composed of a connecting portion 233 and a fixing portion 232, the connecting portion 233 is connected to the bearing portion 231, and the fixing portion 232 is located on the fixing seat 21, that is, the fixing portion 232 is fixedly connected to the fixing seat 21, and the partial structure of the fixing seat 21 that is fixedly connected to the fixing portion 232 can be used as a partial holding structure. In this solution, the connecting portion 233 of the movable seat 23 is used as a partial holding structure, and the connecting portion 233 is an elastic structure, and the elastic force of the connecting portion 233 acts on the bearing portion 231 to form the holding force. In this embodiment, the elastic force of the connecting portion 233 is used as a holding force to ensure the contact between the bearing portion 231 and the fixing seat 21. It is necessary to add other holding structures in addition to the fixing seat and the movable seat. The connecting portion 233 can not only ensure that the bearing portion 231 moves under the driving force of the driving unit 22, but also has the function of providing a holding force. The dual-function design of the connecting portion 233 is conducive to the miniaturization of the image sensor driving module 2.

[0137] See also Fig. 10AThe connection point between the connecting portion 233 and the fixing portion 232 is the first position 2331, and the connection point between the connecting portion 233 and the bearing portion 231 is the second position 2332. There is elastic potential energy between the first position 2331 and the second position 2332, and the elastic potential energy forms the holding force. This solution defines a specific method for forming the elastic force of the connecting portion 233. By forming elastic potential energy between the first position 2331 and the second position 2332, the necessary assembly position of the connecting portion 233 is utilized, which is conducive to ensuring the miniaturization of the image sensor driving module 2.

[0138] Specifically, in the direction perpendicular to the fixed platform 211, that is, in the direction of the optical axis, the distance D1 between the first position 2331 and the fixed platform 211 in the direction of the optical axis is smaller than the distance D2 between the second position 2332 and the fixed platform 211 in the direction of the optical axis. It can be understood that the first position 2331 and the second position 2332 form a step-like structure during the assembly process, and the assembled connecting portion 233 has a force to pull the bearing portion 231 toward the fixed platform 211, that is, the elastic tension of the connecting portion 233 acts on the second position 2332 to form the holding force toward the fixed platform 211. In this solution, by determining the distance relationship between the first position 2331, the second position 2332 and the fixed platform 211 during the assembly of the movable seat 23, it is ensured that when D1 is smaller than D2, the second position 2332 can provide a pulling force toward the fixed platform 211, that is, a holding force. The method of forming the retaining force in this solution is realized during the assembly process. For the connecting portion 233 of the movable seat 23, there is no need to consider forming the retaining force and make a special design for its structure during its manufacturing process, which can save manufacturing costs.

[0139] In other embodiments, the connecting portion 233 is used as a retaining structure, and the fixing portion 232 and the bearing portion 231 can be designed to be non-coplanar during the process of manufacturing the movable seat 23, that is, when the connecting portion 233 is in a free state (not subject to any restraining force), the first position 2331 at the connection between the connecting portion 233 and the fixing portion 232 and the second position 2332 at the connection between the connecting portion 233 and the bearing portion 231 correspond to different optical axis positions, and there is a height difference in the optical axis direction between the first position 2331 and the second position 2332 before assembly. During the assembly process, the first position 2331 and the second position 2332 can be assembled into a coplanar state, or during the assembly process, the specific physical position of the first position 2331 or the second position 2332 is adjusted to store energy in such a way that elastic potential energy is stored in the connecting portion 233, and the force of this elastic potential energy acting on the bearing portion 231 is a retaining force toward the fixed platform 211. This solution is conducive to miniaturization of the size of the assembled image sensor drive module.

[0140] In one embodiment, see Fig. 20 and Fig.21 , the holding structure 26 includes a magnetic member 24 and a fixed platform 211, the magnetic member 24 is fixed on the bearing part 231, and the magnetic attraction between the magnetic member 24 and the fixed platform 211 constitutes at least part of the holding force. In this solution, by setting a magnetic member on the bearing part 231, the fixed platform 211 is designed to cooperate with the magnetic member to form a magnetic attraction. By using the magnetic attraction as the holding force, the life and stability of the holding force can be guaranteed. In the case where the elastic force of the connecting part 233 is used as the holding force, the elastic coefficient of the elastic force will change during long-term use, resulting in a decrease in the elastic performance of the connecting part 233. In this case, the holding force between the bearing part 231 and the fixed platform 211 may be affected. If the holding force is not enough to support the friction interface between the two to maintain a contact state, it will affect the stability of the movement of the image sensor 4 and the thermal conductivity of the image sensor driving module 2. In this solution, by setting a magnetic member 24 and using the magnetic attraction as the holding force, the continuous stability of the holding force can be guaranteed and the life of the image sensor driving module 2 can be improved.

[0141] In one implementation, the holding force may include both the elastic force provided by the connecting portion 233 and the magnetic force provided by the magnetic member 24 .

[0142] In a specific implementation manner, Fig. 20 As shown, the magnetic member 24 includes four magnets 241, 242, 243, 244, and the four magnets 241, 242, 243, 244 are arranged on the bearing portion 231 in a point-like distribution state and are adjacent to the outer edge of the bearing portion 231. The outer edge of the bearing portion 231 is the edge position of the bearing portion 231 facing the fixing portion 232. In this embodiment, the four magnets 241, 242, 243, 244 are distributed at the four corners of the bearing portion 231. In other embodiments, the magnetic member 24 may include two or three magnets, or the number of magnets may be greater than or equal to five, and the plurality of magnets may be evenly spaced and distributed at the edge position of the bearing portion 231. Specifically, when there are three magnets, the three magnets may define a surface, which can ensure the surface contact of the contact surface between the bearing portion and the fixing seat. When there are four magnets, they can be symmetrically distributed at the four external corners of the image sensor, which is conducive to ensuring the stability of the movement of the image sensor.

[0143] In a specific implementation manner, Fig.21As shown, the magnetic member 24 includes four magnetic strips 245, 246, 247, 248, and the magnetic strips 245, 246, 247, 248 are all in the shape of long strips, and are symmetrically distributed on the bearing portion 231 in pairs, and are adjacent to the outer edge of the bearing portion 231, and the outer edge of the bearing portion 231 is the edge position of the bearing portion 231 facing the fixed portion 232. In this embodiment, the magnetic strips 245, 246, 247, 248 are located inside the coil, and the coil is the movable part 222 of the driving unit. In other embodiments, the magnetic strips 245, 246, 247, 248 can also be arranged on the periphery of the movable part 222. In other embodiments, the number of magnetic strips can also be two, three or more. The setting of the long strip-shaped magnetic strips can not only provide a larger magnetic attraction, but also facilitate assembly and fixation.

[0144] In the embodiment of the present application, the magnetic attraction force between the magnetic member 24 arranged on the bearing portion 231 and the fixing seat 21 needs to ensure that the bearing portion 231 can maintain contact with the fixing seat 21 during the movement, and the magnetic attraction force must also be controlled within a preset range, that is, the magnetic attraction force cannot be too large. If the magnetic attraction force is too large, the driving unit 22 may be unable to drive the bearing portion 231 to move, or the efficiency of the movement of the bearing portion 231 may be affected.

[0145] In a specific implementation manner, see Fig. 22 , the retaining structure 26 includes a movable part 222 and a fixed platform 211. Specifically, the movable part 222 is a magnetic driving part, and the fixed part 221 is a coil driving part. In this embodiment, the fixed part 221 is fixed on the fixed base 21, and it is necessary to configure circuit board wiring on the fixed base 21 to realize power supply for the coil driving part. In summary, in this solution, the magnetic driving part 222, as a magnetic part (similar to the aforementioned magnet and magnetic strip structure), forms a magnetic attraction between the fixed platform 211, and the magnetic attraction between the magnetic driving part 222 and the fixed platform 211 constitutes at least part of the retaining force. This solution utilizes a magnetic driving part (movable part 222) to form a retaining structure, which is conducive to the design of miniaturization of the image sensor driving module 2.

[0146] See also Fig.23A and Fig. 23BIn one embodiment, a magnetic member is provided on the fixed platform 211 of the fixed seat 21, and a magnetic member, such as a steel plate, is provided on the bearing portion 231 of the movable seat 23, and the holding force is formed by the magnetic attraction between the magnetic member and the magnetic member. Specifically, in this embodiment, the holding structure 26 includes a magnetic member 24 and a magnetic member 238, wherein the magnetic member 238 has a magnetic conductive material and is a part of the bearing portion 231, and the magnetic member 24 is fixed on the fixed seat 21 and is located at the contact surface between the fixed seat 21 and the bearing portion 231, and the holding force is formed by the magnetic attraction between the magnetic member 24 and the magnetic member 238. Fig.23A In the illustrated embodiment, the magnetic member 24 is located on a surface of the fixing platform 211 of the fixing seat 21 which is away from the bearing portion 231 . Fig. 23B In the embodiment shown, the magnetic member 24 is embedded in the interior of the fixed platform 211 of the fixed seat 21. The bearing portion 231 includes a circuit board structure and a magnetic member 238. The magnetic member 238 is fixed to the bottom surface of the circuit board structure to reinforce the strength of the circuit board. The magnetic member 238 is located on the surface of the bearing portion 231 facing the fixed platform 211. The magnetic member 238 contacts the fixed platform 211 to form a friction interface X. The magnetic member 238 is also used to carry the image sensor 4. In this embodiment, the magnetic member 238 and the fixed platform 211 are connected to each other. Figure 7 The reinforcing plate structure 23B in the embodiment shown can be of the same structure. However, in this embodiment, the magnetic member 238 can not only provide structural reinforcement for the bearing portion 231 and can carry the image sensor 4, but also needs to have a magnetic conductive material. The magnetic member 238 needs to cooperate with the magnetic member 24 to generate a magnetic attraction force. Figure 7 In the illustrated embodiment, the reinforcing plate structure 23B does not need to form a magnetic attraction force, but only needs to provide a reinforcing force to the circuit board structure 23A and support the image sensor 4 .

[0147] Fig.23A and Fig. 23BIn the embodiment shown, the magnetic member 24 and the magnetic attraction member 238 constitute part of the holding structure 26, and part of the holding structure 26 includes a connecting portion 233 and a fixing portion 232. That is to say, in this embodiment, the holding structure 26 ensures the contact reliability between the bearing portion 231 and the fixing platform 211 through the combined action of magnetic force and elastic force. In this solution, by setting the magnetic member 24 on the fixing platform 211 and correspondingly setting the magnetic attraction member, such as a steel plate, on the bearing portion 231, such a design can reduce the influence of the magnetic member on the driving unit 22 and the image sensor 4, and ensure the moving stability of the image sensor 4 and the quality of the generated image signal. In this solution, by setting the magnetic member 24 on the surface of the fixing seat 21 away from the bearing portion 231, the distance between the magnetic member 24 and the image sensor 4 and the driving unit 22 can be maximized, which is conducive to reducing the influence of the magnetic member 24 on the driving unit 22 and the image sensor 4, and ensuring the moving stability of the image sensor 4 and the quality of the generated image signal. By embedding the magnetic component 24 inside the fixed platform 211, the magnetic component 24 and the fixed platform 211 are combined into one, which does not affect the overall structure of the image sensor driving module 2 and also facilitates the assembly and positioning between the image sensor driving module 2 and other structures in the electronic device.

[0148] In a specific implementation manner, see Fig.24 , the image sensor driving module includes an elastic member 25, one end of the elastic member 25 is connected to the top plate 2121 of the fixing frame 212 of the fixing seat 21, and the other end is connected to the bearing part 231. It can be understood that: one end of the elastic member is located on the bearing part, that is, one end of the elastic member is a partial structure on the bearing part, and the other end of the elastic member is located on the fixing seat, that is, the other end of the elastic member is a partial structure on the fixing seat. In the assembled state, the elastic member 25 is in an elastic compression state, and the elastic member 25 applies an elastic force to the bearing part 231. This elastic force is directed toward the contact surface between the bearing part 231 and the fixing seat 21. This elastic force is a holding force to ensure the contact between the bearing part 231 and the fixing platform 211. The elastic member 25 can maintain the contact state at the friction interface X. Fig.23A and Fig. 23B In the illustrated embodiment, the elastic member 25, the connecting portion 233 and the fixing portion 232 together constitute a retaining structure 26, which utilizes the retaining force provided by the connecting portion 233 and the retaining force of the elastic member 25, thereby making the contact between the bearing portion 231 and the fixing platform 211 more stable.

[0149] The present application makes the bearing part 231 contact with the fixed platform 211 of the fixing seat 21, and the bearing part 231 also has a holding force, which is used to maintain the contact state between the bearing part 231 and the fixing seat 21, and the holding force is in the direction of the contact surface between the bearing part 231 and the fixing seat 21, so that the image sensor driving module 2 can be held against the bearing part 231 by the holding force in any position or environment. The holding force needs to be greater than the sum of the gravity of the bearing part 231 and all the structures carried on the bearing part 231, so that no matter how the camera module 10 is placed, the bearing part 231 can move on a fixed plane in the process of driving the image sensor 4 to move, and the image sensor 4 can be moved smoothly, and the image sensor 4 can be prevented from tilting or axial movement. This axial movement refers to the direction of the optical axis. It can be understood that the plane where the contact surface between the bearing part 231 and the fixing seat 21 is located is a plane perpendicular to the optical axis. The image sensor driving module 2 provided by the present application can drive the image sensor 4 to move on a plane perpendicular to the optical axis.

[0150] See also Fig.25A In one embodiment, the movable seat 23 is an integrated circuit board structure, that is, the bearing part 231, the connecting part 233 and the fixing part 232 are formed by an integrated molding method, and the periphery of the fixing part 232 is used to connect the circuit board (such as FPC) 9, and the circuit board 9 is used to electrically connect the image sensor 4 and the processor in the electronic device. In this embodiment, the circuit board 9 and the fixing part 232 are an integrated circuit board structure. The circuit board is formed by the integrated molding process of the circuit board, and the manufacturing process is simple, the assembly is convenient, and the structural stability is better. The circuit layer in the movable seat 23 is only routed in the same circuit board, which can ensure the stability of signal transmission and reduce signal loss. The bearing part 231 includes a first area 231C for carrying the movable part 222 and other electronic devices and a second area 231D for carrying the image sensor 4. The size of the movable seat 23 in the direction of the optical axis P of the image sensor 4 is the thickness of the movable seat 23, and the thickness T1 of the first area 231C, the thickness T2 of the connecting part 233 and the thickness T3 of the fixing part 232 are equal. The movable seat formed by the integrated circuit structure can save space of the image sensor driving module in the thickness direction, which is conducive to the design of miniaturization of the image sensor driving module in the direction of the optical axis of the image sensor.

[0151] The first area 231C is connected between the second area 231D and the connecting portion 233. The thickness T4 of the second area 231D is less than the thickness T1 of the first area 231C. The first area 231C is arranged around the edge of the second area 231D and together with the second area 231D, a receiving space is formed. Fig.25AThe receiving space is occupied by the image sensor 4, not marked), the receiving space is used to receive the image sensor 4, the image sensor 4 is connected to the bottom surface and the second area 231D, and can be connected by a glue layer. There may be a gap between the side of the image sensor 4 and the inner wall of the receiving space, which is convenient for installing the image sensor. In this scheme, a groove is provided on the bearing part 231, and the groove is used to accommodate the image sensor, which is beneficial to saving space in the optical axis direction and is easy to realize a small-size design in the optical axis direction. The contact surface between the first area 231C and the fixed platform 211 of the fixing seat 21 is coplanar with the contact surface between the second area 231D and the fixed platform 211. In this embodiment, the second area 231D of the bearing part 231 can be a complete flat plate structure, that is, no through hole or window structure is provided in the second area 231D. In other embodiments, the second area 231D can also be a frame-shaped structure, that is, the second area 231D only carries part of the edge of the image sensor 4, and the partial area of ​​the image sensor 4 and the fixed platform 211 are separated by a gap, and the gap can be air or filled with a heat-conducting medium.

[0152] See also Fig.25B , Fig.25B and Fig.25A The same embodiment as shown, Fig.25B The detailed structure of the first bearing area R1 is indicated in the figure. The first bearing area R1 includes a first central area R11 and a second central area R12. In the direction in which the optical axis extends, the first central area R11 and the second central area R12 are opposite to the opening S11. The second central area R12 is located at the periphery of the first central area R11 and is connected between the first central area R11 and the second bearing area R2. The first central area R11 is used to install the image sensor 4, and the second central area R12 is used to install the optical element 6. In this embodiment, the movable seat 23 is an integrated circuit board structure. The size of the movable seat 23 in the direction of the optical axis of the image sensor 4 is the thickness of the movable seat. The thickness T1 of the second bearing area R2, the thickness T2 of the connecting portion 233, and the thickness T3 of the fixing portion 232 are equal.

[0153] The thickness of at least a portion of the first carrying area R1 is smaller than the thickness of the second carrying area R2 , so that at least a portion of the first carrying area R1 is a concave structure and constitutes an accommodating space for accommodating the image sensor 4 . Fig.25A and Fig.25BIn the illustrated embodiment, the thickness of the first central region R11 of the first bearing region R1 is less than the thickness of the second central region R12, the thickness of the second central region R12 is equal to the thickness of the second bearing region R2, and the second central region R12 and the first central region R11 together enclose a receiving space, and the receiving space is used to receive the image sensor 4. In other embodiments, the thickness of the first central region R11 may be equal to the thickness of the second central region R12, that is, the first bearing region R1 is a structure with uniform thickness, and the thickness of the first bearing region R1 is less than the thickness of the second bearing region R2, so that a receiving space for receiving the image sensor is formed between the second bearing region R2 and the first bearing region R1.

[0154] See also Fig.26 , Fig.26 In the embodiment shown, the friction interface X between the bearing portion 231 and the fixed platform 211 is a three-dimensional layer structure, and its specific design can be referred to in Fig.11A , Fig. 11B and Fig. 11C In the embodiment shown in the figure, in the extending direction of the optical axis P of the image sensor 4, a height difference is formed between the fixing portion 232 and the bearing portion 231. That is, the vertical distance H1 between the surface of the fixing portion 232 away from the fixing platform 211 and the fixing platform 211 is smaller than the vertical distance H2 between the surface of the bearing portion 231 away from the fixing platform 211 and the fixing platform 211. In this embodiment, the fixing portion 232 and the fixing platform 211 are connected by a glue layer.

[0155] Fig.25A and Fig.26 In the illustrated embodiment, the driving unit 22 is located on a side of the bearing portion 231 away from the fixing platform 211 , that is, the driving unit 22 is located between the top plate 2121 of the fixing frame 212 and the bearing portion 231 .

[0156] See also Fig. 27In one embodiment, the fixing platform 211 of the fixing seat 21 is in the shape of a flat plate, the fixing frame 212 is connected to the edge area of ​​the fixing platform 211, and the fixing frame 212 is used to connect the fixing portion 232 of the movable seat 23. Specifically, the fixing frame 212 includes a first portion 212A and a second portion 212B, the first portion 212A is located between the fixing portion 232 and the fixing platform 211, and supports the fixing portion 232 above the fixing platform 211. The second portion 212B is located on the side of the fixing portion 232 away from the first portion 212A, that is, the first portion 212A and the second portion 212B clamp the fixing portion 232 therebetween. The driving unit 22 is located between the bearing part 231 and the fixed platform 211. The fixing part 221 of the driving unit 22 is fixed on the fixed platform 211, and the movable part 222 is fixed on the surface of the bearing part 231 facing the fixed platform 211. Specifically, the movable part 222 is fixed on the side of the second bearing area R2 of the bearing part 231 that is away from the top plate 2121 (i.e., the surface of the second bearing area R2 facing the fixed platform 211). In this solution, the position of the fixing part 221 on the fixed platform 211 is located at the periphery of the friction interface X between the bearing part 231 and the fixed platform 211. The moving range of the bearing part 231 on the fixed platform 211 is located within the range defined by the fixing part 221 on the fixed platform 211. The bearing part 231 includes three parts, namely the first section A1, the second section A2 and the third section A3. The second section A2 is connected between the first section A1 and the third section A3. The first section A1 is connected to the connecting part 233 and is used to set the movable part 222 and other electronic devices. The third section A3 is used to support the image sensor 4. The first section A1 may be parallel to the third section A3.

[0157] Fig. 27 In the illustrated embodiment, the fixing frame 212 of the fixing seat 21 includes a top plate 2121 , and the top plate 2121 is used to shield the connecting portion 233 , and the top plate 2121 is used to protect the connecting portion 233 .

[0158] In other embodiments, Fig.28 As shown, the fixing seat 21 may also not be provided with a top plate, and the fixing portion 232 of the movable seat 23 may be directly overlapped on the top surface 212C of the fixing frame 212. This embodiment is conducive to miniaturization of the image sensor driving module and saves space in the electronic equipment. Fig.28 In the illustrated embodiment, the area enclosed by one end of the fixing frame 212 away from the fixing platform 211 is an opening S11 . During the assembly of the image sensor 4 , the image sensor 4 is assembled to the first carrying area R1 of the carrying portion 231 through the opening S11 .

[0159] See also Fig.29In one embodiment, the bearing part 231 includes a first bearing platform 231E and a second bearing platform 231F, the first bearing platform 231E is used to bear the image sensor 4, the first bearing platform 231E is provided with a receiving groove E1, the image sensor 4 is fixed in the receiving groove E1 of the first bearing platform 231E through a glue layer, the first bearing platform 231E contacts with the fixed platform 211 of the fixed seat 21 to form a contact surface, the direction perpendicular to the contact surface is the direction of the optical axis P, the second bearing platform 231F and the connecting part 233 are stacked along the direction of the optical axis P, the movable part 222 of the driving unit 22 is fixed on the second bearing platform 231F, the fixing part 221 is fixed on the top plate 2121 of the fixed frame 212 of the fixed seat 21, and the driving unit 22 is located on the side of the second bearing platform 231F away from the connecting part 233. The first bearing platform 231E and the connecting portion 233 are interconnected as an integrated structure. Along the direction of the optical axis P, the connecting portion 233 is located between the second bearing platform 231F and the contact surface (i.e., the friction interface X). The first bearing platform 231E and the second bearing platform 231F are connected by solder balls, so that both mechanical connection and electrical connection can be achieved. In this embodiment, the bearing portion 231 is designed as a two-plate structure (i.e., the first bearing platform 231E and the second bearing platform 231F), and the second bearing platform 231F and the connecting portion 233 are stacked in an architecture, so that the movable seat 23 can be designed with a small size in a direction perpendicular to the optical axis P. When this solution is used in electronic equipment, it can save the board area occupied by the circuit board where the camera module is located. Fig.29 In the illustrated embodiment, the portion of the second carrying platform 231F facing the top plate 2121 is the second carrying area R2, and the second carrying area R2 and the connecting portion 233 are stacked. Along the direction of the optical axis P, the connecting portion 233 is located between the second carrying area R2 and the fixed platform 211, the first carrying area R1 includes an assembly area R13 and an assembly area R14, the assembly area R13 is used to carry the image sensor 4, the connecting portion 233 surrounds the assembly area R13 and is connected to the edge of the assembly area R13, the assembly area R14 and the second carrying area R2 are interconnected as a whole, the assembly area R14 and part of the assembly area R13 are overlapped and form an overlapping area R111, and the positions of the mechanical connection and electrical connection between the assembly area R13 and the assembly area R14 are both within the overlapping area R111. Fig.29 The portion within the rectangular frame indicated by the dashed line represents the overlapping region R111.

[0160] See also Fig.30 and Fig.31In this embodiment, the first bearing platform 231E and the connecting portion 233 are respectively connected to the top surface and the bottom surface of the second bearing platform 231F. Along the optical axis P direction, the second bearing platform 231F is located between the connecting portion 233 and the fixed platform 211. It can also be understood that: along the optical axis P direction, the second bearing platform 231F is located between the connecting portion and the friction interface. In this embodiment, the first bearing platform 231E and the second bearing platform are directly connected to form a Z-shaped structure. The connecting portion 233 is arranged on the side of the second bearing platform 231F away from the fixed platform 211. The connecting portion 233 is connected to the top surface of the second bearing platform 231F through an adapter plate 233A. The adapter plate 233A and the second bearing platform 231F are connected through solder balls, which can realize both mechanical connection and electrical connection. The driving unit 22 is located between the second bearing platform 231F and the fixed platform 211. The movable part 222 is fixed on the second bearing platform 231F, and the fixed part 221 is fixed to the fixed platform 211.

[0161] like Fig.30 As shown, the portion of the second carrying platform 231F facing the top plate 2121 is the second carrying area R2, and the movable member 222 is fixed on the surface of the second carrying area R2 facing the fixed platform 211. In the optical axis direction, the connecting portion 233 is located between the top plate 2121 and the second carrying area R2. The first carrying platform 231E is the first carrying area R1.

[0162] Fig.30 In the illustrated embodiment, the fixing frame 212 includes a top plate 2121 , which is located above the connecting portion 233 to protect the connecting portion 233 . The fixing portion 232 and the fixing platform 211 are separated by a portion of the fixing frame 212 , that is, the fixing portion 232 is fixed in the fixing frame 212 .

[0163] Fig.31 In the illustrated embodiment, the fixing frame 212 is not provided with a top plate 2121 , and the fixing portion 232 is fixed to the top surface of the fixing frame 212 , that is, the fixing portion 232 is fixed to the surface of the fixing frame 212 away from the fixing platform 211 .

[0164] The first, second, third, fourth and various numerical numbers involved in this document are only distinguished for the convenience of description and are not intended to limit the scope of the present application.

[0165] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0166] The above description is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application; in the absence of conflict, the possible implementations of the present application and the features of the possible implementations can be combined with each other. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An image sensor driving module, characterized in that: The image sensor driving module is applied to a camera module and includes: A driving unit (22), comprising a fixed part (221) and a movable part (222) capable of relative movement; A fixing seat (21), used for carrying the fixing member (221); a bearing portion (231), a fixing portion (232), and a connecting portion (233), wherein the connecting portion (233) is used to achieve mechanical and electrical connection between the bearing portion (231) and the fixing portion (232), the bearing portion (231) is used to bear an image sensor (4) and the movable member (222), the fixing portion (232) is connected to the fixing seat (21), and a holding force exists between the bearing portion (231) and the fixing seat (21); Wherein, the driving unit (22) is used to drive the bearing portion (231) to move relative to the fixing seat (21) in a plane perpendicular to the optical axis of the camera module; The connecting portion (233) is a plurality of strip-shaped elastic arms, the connecting portion (233) and the fixing portion (232) are integrally formed, the thickness of the connecting portion (233) is equal to the thickness of the fixing portion (232), and the strip-shaped elastic arms have a bent structure; The connecting portion (233) comprises a conductive layer and a metal layer, the conductive layer being used to set circuit board wiring and to achieve electrical connection between the bearing portion (231) and the fixing portion (232); the metal layer being used to provide elastic deformation of the connecting portion (233); The fixing part (221) and the movable part (222) are arranged along the optical axis direction.

2. The image sensor driving module according to claim 1, wherein: The connecting portion (233) on the bearing portion (231) constitutes at least a partial retaining structure, the connecting portion (233) is an elastic structure, the connection point between the connecting portion (233) and the fixing portion (232) is a first position, the connection point between the connecting portion (233) and the bearing portion (231) is a second position, and elastic potential energy exists between the first position and the second position.

3. The image sensor driving module according to claim 2, wherein: The fixing seat (21) comprises a fixing platform (211), the bearing portion (231) contacts the inner surface of the fixing platform (211), the bearing portion (231) is used to bear the image sensor (4) to move on the inner surface of the fixing platform (211), the image sensor (4) is located on the light-emitting side of the lens assembly of the camera module, the inner surface of the fixing platform (211) is perpendicular to the optical axis of the lens assembly, and the distance between the first position and the inner surface of the fixing platform (211) in the direction of the optical axis of the lens assembly is smaller than the distance between the second position and the inner surface of the fixing platform (211) in the direction of the optical axis of the lens assembly.

4. The image sensor driving module according to claim 1, wherein: A magnetic component (24) is provided on the bearing portion (231), and a portion of the fixing seat (21) that is used to contact the bearing portion (231) has a magnetic conductive material.

5. The image sensor driving module according to claim 4, characterized in that: The magnetic member (24) comprises at least two magnets, and the at least two magnets are arranged on the bearing portion (231) and are adjacent to an edge position of the bearing portion (231) facing the fixing portion (232).

6. The image sensor driving module according to claim 4, characterized in that: The magnetic member (24) comprises at least two magnetic strips, each of which is in the shape of an elongated strip. The at least two magnetic strips are symmetrically distributed on the bearing portion (231) and are located adjacent to an edge of the bearing portion (231) facing the fixing portion (232).

7. The image sensor driving module according to claim 1, wherein: A magnetic component (24) is provided on the fixing seat (21), part of the bearing portion (231) has a magnetic conductive material, the part of the bearing portion (231) having the magnetic conductive material is a magnetic attraction component, and the magnetic component (24) is located at the contact surface between the fixing seat (21) and the bearing portion (231).

8. The image sensor driving module according to claim 1, wherein: The image sensor (4) driving module comprises an elastic member, one end of the elastic member is located on the bearing portion (231), and the other end of the elastic member is located on the fixing seat (21).

9. The image sensor driving module according to claim 1, wherein: A friction interface is formed at the contact surface between the bearing portion (231) and the fixing seat (21), and the friction coefficient of the friction interface is less than 0.

3.

10. The image sensor driving module according to claim 9, wherein: At the position of the friction interface, the bearing portion (231) and / or the fixing seat (21) comprises an ultra-slip material layer, the ultra-slip material layer is a solid structure, and the friction coefficient of the friction interface is less than 0.3 through the ultra-slip material layer.

11. The image sensor driving module according to claim 9, wherein: At the position of the friction interface, a lubricating layer is provided between the bearing portion (231) and the fixing seat (21); the lubricating layer is an oily, grease-like or paste-like structure, and the friction coefficient of the friction interface is less than 0.3 through the lubricating layer.

12. The image sensor driving module according to claim 9, wherein: By means of a manufacturing process of performing surface treatment on the contact surface between the bearing portion (231) and the fixing seat (21), the friction coefficient of the friction interface is achieved to be less than 0.

3.

13. The image sensor driving module according to any one of claims 9 to 12, characterized in that: The friction interface includes a material having thermal conductivity.

14. The image sensor driving module according to claim 13, wherein: The thermal conductivity of the friction interface is greater than 0.5 W / m·K.

15. The image sensor driving module according to claim 1, wherein: The contact mode between the bearing portion (231) and the fixing seat (21) is contact between two planes, the plane on the bearing portion (231) used for contacting the fixing seat (21) is a first plane, and the plane on the fixing seat (21) used for contacting the bearing portion (231) is a second plane, and the first plane and the second plane are both continuous and complete planar structures.

16. The image sensor driving module according to claim 1, wherein: The contact mode between the bearing portion (231) and the fixing seat (21) is the contact between a plane and an array of convex points. At the contact position between the bearing portion (231) and the fixing seat (21), the structural form of one of the bearing portion (231) and the fixing seat (21) is a complete plane structure, and the structural form of the other of the bearing portion (231) and the fixing seat (21) is an array of convex point structure. The array of convex point structure corresponds to all the regional settings of the complete plane structure.

17. The image sensor driving module according to claim 1, wherein: The contact mode between the bearing portion (231) and the fixing seat (21) is contact between a plane and a plurality of protrusions. At the contact position between the bearing portion (231) and the fixing seat (21), the structural form of one of the bearing portion (231) and the fixing seat (21) is a complete plane structure, and the structural form of the other of the bearing portion (231) and the fixing seat (21) is a plurality of protrusion structures, and the plurality of protrusion structures are arranged in a local area corresponding to the complete plane structure.

18. The image sensor driving module according to claim 1, wherein: The contact mode between the bearing portion (231) and the fixing seat (21) is the contact between a plane and a protruding rib structure; at the contact position between the bearing portion (231) and the fixing seat (21), the structural form of one of the bearing portion (231) and the fixing seat (21) is a complete plane structure, and the structural form of the other of the bearing portion (231) and the fixing seat (21) is a protruding rib structure.

19. The image sensor driving module according to any one of claims 1 to 12, 14 to 18, characterized in that: The fixing seat (21) comprises a fixing platform (211) and a fixing frame, the retaining force is used to maintain contact between the bearing portion (231) and the fixing platform (211), the fixing frame is fixedly connected to the edge of the fixing platform (211), the fixing frame and the fixing platform (211) form an enclosed space, the driving unit (22), the connecting portion (233) and part of the bearing portion (231) are located in the enclosed space, and the driving unit (22) is located on a side of the bearing portion (231) facing away from the fixing platform (211).

20. The image sensor driving module according to any one of claims 1-12, 14-18, characterized in that: The fixing seat (21) comprises a fixing platform (211), the retaining force is used to maintain contact between the bearing portion (231) and the fixing platform (211), the driving unit (22) is located between the bearing portion (231) and the fixing platform (211), and the fixing member (221) is fixed to the fixing platform (211).

21. The image sensor driving module according to any one of claims 1-12, 14-18, characterized in that: The bearing portion (231) comprises a first bearing platform and a second bearing platform, the first bearing platform being used to bear the image sensor (4), the first bearing platform being in contact with the fixing seat (21) to form a contact surface, the direction perpendicular to the contact surface being the direction of the optical axis, the second bearing platform and the connecting portion (233) being stacked along the direction of the optical axis, and the movable part (222) of the driving unit (22) being fixed on the second bearing platform.

22. The image sensor driving module according to claim 21, wherein: The first bearing platform and the connecting portion (233) are interconnected to form an integrated structure; along the optical axis direction, the connecting portion (233) is located between the second bearing platform and the contact surface.

23. The image sensor driving module according to claim 21, wherein: The first bearing platform and the connecting portion (233) are respectively connected to the top surface and the bottom surface of the second bearing platform; along the optical axis direction, the second bearing platform is located between the connecting portion (233) and the contact surface.

24. The image sensor driving module according to any one of claims 1-12, 14-18, characterized in that: The bearing portion (231) comprises a first plate and a second plate, the outer edge of the first plate is connected to the connecting portion (233), the inner edge of the first plate surrounds and forms a receiving space, the movable member (222) is arranged on the first plate, the second plate comprises a first part and a second part, the first part is stacked with the first plate, the second part is located at the bottom of the receiving space, the second part is used to carry the image sensor (4) so ​​that the image sensor (4) is accommodated in the receiving space, and the second plate is in contact with the fixing seat (21).

25. An optical component, characterized in that: It comprises an axial motion driving module and an image sensor driving module as claimed in any one of claims 1 to 24, wherein the axial motion driving module is fixedly connected to the image sensor driving module, the image sensor driving module is used to drive the image sensor (4) to move on a plane perpendicular to the optical axis, and the axial motion driving module is used to drive the lens module to move or tilt in the axial direction.

26. A camera module, characterized in that: It comprises an image sensor (4), a lens assembly and an optical assembly as claimed in claim 25, wherein the lens assembly is fixed to the axial motion driving module, the image sensor (4) is fixed to the image sensor driving module, and the lens assembly is located on the light incident side of the image sensor (4).

27. A camera module, characterized in that: It comprises an image sensor (4), a lens assembly and an image sensor driving module according to any one of claims 1 to 24, wherein the image sensor (4) is fixed to the image sensor driving module, and the lens assembly is located on the light incident side of the image sensor (4).

28. An electronic device, characterized in that: It comprises a processor and a camera module as claimed in claim 26 or 27, wherein the processor is electrically connected to the camera module, and the processor is used to process the image signal output by the image sensor (4).

Images