Camera module and electronic equipment

Abstract

The invention discloses a camera module and electronic equipment. The camera module comprises a lens assembly, an anti-shake mechanism, a base and a supporting structure. The lens assembly is used for sending emergent light to the photosensitive chip. The anti-shake mechanism comprises a movable carrying table and a mover assembly which are connected with each other, the movable carrying table is used for carrying the lens assembly, and the mover assembly is configured to be capable of being driven by electromagnetism so as to drive the movable carrying table to carry the lens assembly to move. The base comprises a bottom wall stacked with the movable carrying table. The supporting structure is flatly arranged between the opposite faces of the movable carrying table and the bottom wall, and the movable carrying table can horizontally move in any direction along the plane parallel to the bottom wall through the supporting structure. According to the camera module provided by the invention, the number of parts of the balls and the track is also reduced, so that the camera module adopting the anti-shake mechanism can realize a light and thin design.

Description

Technical Field

[0001] The present application relates to the technical field of cameras, and more specifically, to a camera module with optical image stabilization technology and an electronic device using the camera module. Background Art

[0002] Optical Image Stabilizer (OIS) is designed to improve the image blurring problem caused by the body shaking of camera equipment. Its working principle is to detect the slight body shaking through the gyroscope and transmit the displacement information generated by the shaking to the microprocessor. The microprocessor immediately calculates the displacement that needs to be compensated, and then lets the anti-shake drive component move the lens or photosensitive chip in the opposite direction to offset the displacement deviation between the lens and the photosensitive chip caused by the body shaking, thereby effectively suppressing the impact of the body shaking on the imaging of the camera equipment. The current mainstream optical anti-shake technology solutions mainly include mobile lens anti-shake, mobile photosensitive chip anti-shake (Sensor Shifit), and combined anti-shake of mobile lens and photosensitive chip.

[0003] The current mobile lens anti-shake structure has a double-layer ball-bearing linear track between the movable stage and the base. The double-layer ball-bearing linear track includes a stacked X-direction track, a Y-direction track and balls located in the track, which are used to guide the movable stage to perform anti-shake compensation actions for X-direction displacement and Y-direction displacement.

[0004] However, since the double-layer ball-bearing linear track has a large thickness and uses a large number of components such as balls and tracks, the structure is also complex, which is not conducive to achieving lightweight and thin camera modules. Summary of the invention

[0005] The purpose of the present application is to provide a camera module and an electronic device. By flatly arranging a supporting structure between the opposite surfaces of the movable platform and the bottom wall, the movable platform can be translated in any direction along the bottom wall, thereby reducing the thickness of the camera module and eliminating some components such as ball bearings and rails, so that the camera module can achieve a lightweight design.

[0006] In a first aspect, the present application provides a camera module, including a lens assembly, an anti-shake mechanism, a base, and a supporting structure.

[0007] The lens assembly is used to send outgoing light to the photosensitive chip.

[0008] The anti-shake mechanism includes a movable stage and a movable subassembly that are connected to each other. The movable stage is used to carry the lens assembly, and the movable subassembly is configured to be electromagnetically driven to drive the movable stage to carry the lens assembly to move.

[0009] The base includes a bottom wall stacked with the movable stage.

[0010] The supporting structure is flatly arranged between the opposite surfaces of the movable platform and the bottom wall, and the movable platform can be translated in any direction along a plane parallel to the bottom wall through the supporting structure.

[0011] In the camera module of the present application, when the supporting structure is a ball, since a track for limiting the rolling direction of the ball is not provided, it can be ensured that the rolling direction of the ball is not restricted, so that the movable stage can be translated in any direction along a plane parallel to the bottom wall through the ball, thereby being able to meet the anti-shake compensation action of the movable stage in the X-direction displacement and the Y-direction displacement. Therefore, there is no need to design a stacked X-direction track and Y-direction track with balls, and only a single layer of balls is required.

[0012] In the camera module of the present application, when the supporting structure is a raised portion fixedly arranged on the movable platform or the bottom wall, the raised portion is slidably connected to the bottom wall or the movable platform, so that the movable platform can slide on the bottom wall in any direction through the raised portion, thereby being able to meet the anti-shake compensation action of the movable platform in the X-direction displacement and the Y-direction displacement. Therefore, there is no need to design a stacked X-direction track and a Y-direction track with ball bearings, and only a single-layer raised portion is required.

[0013] It can be seen that when designing the anti-shake function structure of the camera module in the present application, regardless of whether the supporting structure is a protrusion or a ball, the thickness dimension is reduced compared to the double-layer ball-type linear track in the related art, and the number of parts of the ball and track is also reduced. This allows the camera module using the anti-shake mechanism to achieve a lightweight design, and also simplifies the structure of the camera module, reducing the difficulty and cost of production.

[0014] In addition, the double-layer ball-bearing linear track in the related art uses two layers of balls and a large number of balls. When the camera module is shaken, a more obvious ball-bearing shaking noise will be emitted, which will reduce the texture of the electronic device using the camera module and affect the user experience. In contrast, when the supporting structure of the camera module in the present application is a protrusion, since the protrusion is fixedly arranged on the movable platform or the bottom wall, there is no problem of "ball-bearing shaking noise" in the related art; when the supporting structure used is a ball, since the balls are arranged in a single layer, compared with the double-layer ball-bearing linear track in the related art, it has the advantage of a small number of balls, and the corresponding ball-bearing shaking noise can also be weakened. Therefore, the camera module in the present application can reduce or even directly avoid the ball-bearing shaking noise, which improves the product texture and ensures the user experience.

[0015] In a possible design, the support structure includes balls rollingly disposed between the movable platform and the bottom wall.

[0016] Using the ball bearings as a supporting structure can create a rolling friction force with less resistance between the movable platform and the bottom wall.

[0017] In a possible design, a portion of the bottom wall corresponding to the rolling ball and / or a portion of the movable platform corresponding to the rolling ball has a reinforcing pad.

[0018] The reinforcing pad can effectively prevent the movable platform and the bottom wall from being pressed into pits at the parts in contact with the ball, thereby preventing the movable platform from being stuck.

[0019] In a possible design, a receiving groove for a limiting ball is provided on one of the bottom wall and the movable carrier.

[0020] The receiving groove is used to conveniently position and install the ball bearings and to prevent the ball bearings from being dislocated due to vibration or falling of the camera module.

[0021] In a possible design, the accommodating groove is disposed on the movable platform, and the accommodating groove is formed by a recessed surface of the movable platform.

[0022] The accommodating groove is formed inwardly on the surface of the movable platform, which not only provides installation space for the ball, but also reduces the dead weight of the movable platform, so that the movable platform can be electromagnetically driven with a lower load, thereby further reducing the design difficulty of the anti-shake mechanism.

[0023] In a possible design, the supporting structure includes a protrusion, which is fixedly disposed on one of the bottom wall and the movable carrier, and the other is slidably connected to the protrusion.

[0024] The raised portion can open a movable gap between the bottom wall and the movable carrier, thereby ensuring a smaller sliding friction resistance between the two.

[0025] In a possible design, the protrusion is fixedly disposed on the bottom wall, and the movable platform is slidably connected to the protrusion.

[0026] By fixing the protrusion on the bottom wall instead of on the movable platform, the weight of the movable platform can be reduced, so that the movable platform can be electromagnetically driven with a lower load, thereby further reducing the difficulty of designing the anti-shake mechanism.

[0027] In a possible design, the material of the protrusion is a self-lubricating material.

[0028] The protrusions are made of self-lubricating material, which can reduce the friction resistance when the protrusions slide on the movable platform or the bottom wall, thereby reducing the energy loss of the anti-shake mechanism and improving the flexibility of the movable platform during translation.

[0029] In a possible design, the movable subassembly includes a magnetic assembly fixedly disposed on the movable carrier, and the bottom wall is provided with a magnetically attracted fitting that can be attracted by the magnetic assembly.

[0030] By using a magnetic component to attract magnetic fittings, it is possible to avoid using easily breakable structures such as hanging wires, and to enable the lens assembly to be accurately compensated for anti-shake displacement.

[0031] In a possible design, projections of the magnetic component and the magnetically attracted fitting on the bottom wall surface at least partially overlap.

[0032] The attraction of the magnetic component to the magnetically attracted fitting is in the longitudinal direction, thus avoiding the occurrence of a lateral force component that may cause the movable carrier to deflect.

[0033] In a possible design, the magnetic attraction fitting is embedded inside the bottom wall.

[0034] The surface of the bottom wall can be ensured to be smooth and free of foreign matter, thereby preventing the anti-shake mechanism from interfering with and obstructing the movable carrier when performing the optical image stabilization function. In addition, the magnetic fittings embedded in the interior of the bottom wall also have the effect of strengthening and toughening the base, thereby improving the mechanical strength and service life of the base.

[0035] In a possible design, the anti-shake mechanism further includes a stator assembly, the stator assembly includes an X-direction electromagnetic coil and a Y-direction electromagnetic coil disposed on two adjacent sides of the base, and the X-direction electromagnetic coil and the Y-direction electromagnetic coil are located on the periphery of the movable stage;

[0036] The magnetic assembly includes an X-direction magnetic component and a Y-direction magnetic component. The X-direction magnetic component is arranged on the side of the movable platform facing the X-direction electromagnetic coil, and the Y-direction magnetic component is arranged on the side of the movable platform facing the Y-direction electromagnetic coil.

[0037] The magnetic component has a dual role, not only for attracting the magnetic fitting to connect the movable platform and the base, but also as an electromagnetic induction magnet for being electromagnetically driven to drive the movable platform to translate.

[0038] In a possible design, the mover assembly further includes a first magnetic conductive sheet, and two first magnetic conductive sheets are respectively fixedly disposed on the X-direction magnetic component and the Y-direction magnetic component.

[0039] The magnetic field strength of the X-direction magnetic component and the Y-direction magnetic component can be enhanced, making them more sensitive when being electromagnetically driven.

[0040] In a possible design, the camera module also includes: an elastic member for elastically connecting the movable platform to the base.

[0041] The movable stage can be elastically reset in the middle of the base to maintain the lens assembly near the center of the optical axis.

[0042] In a possible design, the base further includes a column fixedly disposed at a corner position of the bottom wall, and the elastic member is sheet-shaped and has two ends respectively connected to the column and the movable carrier.

[0043] The sheet-like elastic member can be conveniently connected to the column and the movable carrier.

[0044] Optionally, in addition to the function of resetting the movable platform in the middle of the base, the elastic member can also provide a longitudinal supporting force for the movable platform and the base to prevent the movable platform and the base from separating.

[0045] In a possible design, the camera module further includes: a suspension wire, wherein two ends of the suspension wire are respectively connected to the bottom wall and the elastic member.

[0046] The determination or adjustment is made by adjusting the thickness and length of the suspension wire, and the corresponding design difficulty is relatively low.

[0047] In a possible design, the camera module also includes: a focusing mechanism, the focusing mechanism includes a focusing drive chip, and the focusing drive chip is electrically connected to the pins arranged on the bottom wall through the movable carrier, the elastic member, and the base in sequence.

[0048] It meets the power supply demand and data transmission requirement of the focus drive chip, and conveniently connects the focus drive chip to the external control mainboard electrically.

[0049] In one possible design, the focusing drive chip is arranged on the circuit board, the movable carrier and the base are respectively embedded with conductive parts, the elastic part is arranged with a conductive part, and the circuit board, the conductive part of the movable carrier, the conductive part of the elastic part, the conductive part of the base, and the pins are electrically connected in sequence.

[0050] The conductive circuits can be located inside the components or attached to the surface to prevent the conductive circuits from extending outward and causing interference and obstruction to the anti-shake and focus adjustment mechanisms.

[0051] In a possible design, there are multiple conductive members on a single elastic member.

[0052] In this way, two to four circuits can be concentrated through a single elastic member, thereby avoiding the internal conductive parts of the movable carrier and the base from being dispersed, and reducing the difficulty of producing and processing the conductive parts embedded in the movable carrier and the base.

[0053] In a possible design, a wear-resistant coating is provided on the surface of the protrusion.

[0054] In a possible design, the self-lubricating material includes at least one of polytetrafluoroethylene, polyoxymethylene, polycarbonate, and polyamide.

[0055] In one possible design, the reinforcement pad is made of carbon fiber or metal.

[0056] In a possible design, the support structures are distributed at the corners of the bottom wall.

[0057] In a second aspect, the present application also provides an electronic device, comprising a housing and any of the camera modules described above, wherein the camera module is installed inside the housing.

[0058] The electronic device in the present application adopts the above-mentioned camera module. When designing the anti-shake function structure of the camera module, whether the supporting structure is a protrusion or a ball, the thickness size is reduced compared with the double-layer ball-type linear track in the related art, and the number of parts of the ball and track is also reduced, so that the camera module using the anti-shake mechanism has a smaller thickness size, which can meet the development trend of thinness and miniaturization of electronic equipment, and also reduce the production cost. In addition, when the supporting structure used by the camera module is a protrusion, since the protrusion is fixedly set on the movable platform or the bottom wall, there is no problem of "ball shaking abnormal sound" in the related art. When the supporting structure used is a ball, since the ball is a single-layer flat arrangement, it has the advantage of a small number of balls compared with the double-layer ball-type linear track in the related art, and the corresponding ball shaking abnormal sound can also be weakened. Therefore, the electronic device in the present application can reduce or even directly avoid the ball shaking abnormal sound, which improves the product texture and ensures the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 is a schematic diagram of a mobile lens type anti-shake structure in the related art;

[0060] Figure 2 is a schematic diagram of a smart phone provided in an embodiment of the present application;

[0061] Figure 3 is a schematic diagram of a camera module provided in an embodiment of the present application;

[0062] Figure 4 yes Figure 2 A schematic diagram of another viewing angle of the camera module in FIG.

[0063] Figure 5 yes Figure 3 An exploded view of the camera module in Figure 1;

[0064] Figure 6 yes Figure 4 An exploded view of the camera module in Figure 1;

[0065] Figure 7is a schematic diagram of a camera module hidden behind a housing provided in an embodiment of the present application;

[0066] Figure 8 yes Figure 7 Sectional view of AA in the middle;

[0067] Fig. 9 yes Figure 8 A magnified view of an example at D in the middle;

[0068] Fig.10 is a schematic diagram of an example of a movable stage provided in an embodiment of the present application;

[0069] Fig.11 is a schematic diagram of an example of a base provided in an embodiment of the present application;

[0070] Fig.12 is a schematic diagram of another example of a base provided in an embodiment of the present application;

[0071] Fig.13 yes Figure 8 An enlarged view of another example at D in the middle;

[0072] Fig.14 is a schematic diagram of another example of a movable stage provided in an embodiment of the present application;

[0073] Fig.15 yes Figure 7 Cross-sectional view of the middle BB;

[0074] Fig.16 yes Fig.15 Enlarged view of point E in the middle;

[0075] Fig.17 yes Figure 7 Cross-sectional view of CC;

[0076] Fig.18 yes Fig.17 The enlarged view of F in the middle;

[0077] Fig.19 is a schematic diagram of the base and the movable stage provided in the embodiment of the present application when they are disassembled;

[0078] Fig. 20 yes Fig.19 Schematic diagram of the base and movable stage when assembled;

[0079] Fig.21 yes Fig. 20 A magnified view of an example at G in the middle;

[0080] Fig. 22 yes Fig. 20 An enlarged view of another example at G in the middle;

[0081] Fig.23 It is a schematic diagram of another example of the base provided in an embodiment of the present application.

[0082] Reference numerals:

[0083] 10. Lens assembly;

[0084] 20. Anti-shake mechanism; 21. Movable carrier; 211. Accommodating groove; 22. Moving subassembly; 221. X-direction magnetic member; 222. Y-direction magnetic member; 223. First magnetic conductive sheet; 23. Stator assembly; 231. X-direction electromagnetic coil; 232. Y-direction electromagnetic coil;

[0085] 30. base; 31. bottom wall; 311. pin; 312. magnetic fitting; 32. column;

[0086] 40. Support structure; 41. Raised portion; 42. Ball; 421. Reinforcement pad; 50. Elastic member;

[0087] 60. Focusing mechanism; 61. Focusing driving chip; 611. Circuit board; 62. Lens holder; 63. Z-direction electromagnetic coil; 64. Z-direction magnetic member; 65. Second magnetic conductive sheet; 66. Guide column;

[0088] 70, suspension wire; 80, housing; 90, track;

[0089] 100, camera module; 200, housing; 201, middle frame; 202, back cover; 300, display screen. DETAILED DESCRIPTION

[0090] The following is an exemplary introduction to the relevant contents that may be involved in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0091] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] In the description of the present application, it should be understood that the terms "upper", "lower", "side", "inside", "outside", "top", "bottom", etc. indicate orientations or positional relationships based on the installation, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0093] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or parts as an example. It should be understood that the figure mark also applies to other identical parts or parts.

[0094] In the description of this application, it should be noted that the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0095] When users use camera devices such as mobile phones to take pictures, the moment they press the shutter, light will pass through the lens into the photosensitive chip, and the photosensitive chip collects the light to form an image. Usually, users hold the camera device to take pictures, which will inevitably cause the body to shake, which will cause displacement deviation between the lens and the photosensitive chip, which may cause the photosensitive chip to receive different light at the same position and superimpose them, resulting in blurred images.

[0096] The problem of camera shake can be easily experienced in low-light shooting scenes. When shooting at night, if users use a mobile phone without optical image stabilization, they will find that the photos they take are easily blurred. This is because in low-light environments, mobile phones usually reduce the shutter speed to obtain more light, which is equivalent to amplifying the problem caused by the shake. At this time, slight shake can easily cause blurry photos.

[0097] In addition to taking photos, video shooting will also be affected by body shaking. Body shaking will reduce the continuity and stability of the video image, especially when the user is walking or exercising. In such shooting scenes with severe shaking, excessive image shaking will cause the video quality to drop sharply, and even make it impossible to see the video content clearly.

[0098] The emergence of optical image stabilization technology is to improve the image blur problem caused by the body shaking of camera equipment. Its working principle is to detect the slight shaking of the body through the gyroscope, and transmit the displacement information generated by the shaking to the microprocessor. The microprocessor immediately calculates the displacement that needs to be compensated, and then lets the anti-shake drive component move the lens or photosensitive chip in the opposite direction to offset the displacement deviation between the lens and the photosensitive chip caused by the body shaking, thereby effectively suppressing the impact of the body shaking on the imaging of the camera equipment. The current mainstream optical image stabilization technology solutions mainly include mobile lens type anti-shake, mobile photosensitive chip type anti-shake, and combined anti-shake of mobile lens and photosensitive chip.

[0099] Mobile lens anti-shake is to design the lens assembly inside the camera device to be movable, and to be able to push the lens assembly to move through a motor or memory metal mechanical structure to achieve an anti-shake effect.

[0100] Mobile photosensitive chip-based stabilization suppresses body shaking by moving the photosensitive chip, and also allows the shaking light path to fall back to the original position. Because it is the photosensitive chip that needs to be moved, there is no need to consider the refraction of lens light. Compared with bulky lens components, moving the photosensitive chip is relatively much easier, which can achieve more flexible and agile mobile response and improve stabilization performance.

[0101] The combined anti-shake technology of mobile lens and photosensitive chip combines the above-mentioned mobile lens anti-shake technology and mobile photosensitive chip anti-shake technology. It is equivalent to having dual anti-shake technology, and the actual anti-shake effect will be greatly improved.

[0102] The current mobile lens anti-shake structure suspends a movable stage for carrying the lens and focusing mechanism above the base through an elastic suspension element. The function of the elastic suspension element is to form a certain longitudinal supporting force (the longitudinal direction can be understood as the optical axis direction of the lens assembly, or the thickness direction or Z direction below) and lateral reset force (the lateral direction can be understood as the radial direction of the lens assembly) on the overall structure, so that the lens, focusing mechanism and other components including the movable stage are constrained above the base, and the lens is maintained near the center of the optical axis without being subjected to force.

[0103] Figure 1 is a schematic diagram of a mobile lens anti-shake structure in the related art, such as Figure 1 As shown, the above-mentioned moving lens type anti-shake structure is further provided with a double-layer ball-bearing linear track between the movable stage 21 and the base 30. The double-layer ball-bearing linear track includes a stacked X-direction track 90, a Y-direction track 90 and balls 42 located in the track 90, which are used to guide the movable stage 21 to perform anti-shake compensation actions of X-direction displacement and Y-direction displacement.

[0104] However, since the double-layer ball-bearing linear track has a large thickness and uses a large number of components such as balls 42 and tracks 90, the structure is also complex, which makes the overall thickness of the camera module 100 using this anti-shake function structure larger, which is not conducive to achieving a lightweight design and has a high production cost.

[0105] In summary, how to reduce the thickness of the anti-shake function structure and simplify its structure is one of the technical problems to be solved in the current camera module field.

[0106] Therefore, in order to solve the above-mentioned technical problems, the present application provides a camera module and an electronic device. By flatly arranging a supporting structure between the opposite surfaces of the movable platform and the bottom wall, the movable platform can be translated in any direction along the bottom wall, thereby reducing the thickness of the camera module and eliminating some components such as ball bearings and rails, so that the camera module can achieve a lightweight design.

[0107] The embodiment of the present application first provides an electronic device, which may also be referred to as a mobile device, a terminal device, a mobile terminal or a terminal. The electronic device includes but is not limited to a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem. For example, the electronic device may include a smart watch, a smart wristband, a smart phone, a personal digital assistant (PDA) computer, a tablet computer, a laptop computer, a vehicle-mounted computer, smart glasses, a game handheld, and other electronic devices with a camera and requiring a camera anti-shake design.

[0108] In order to more conveniently explain the electronic device provided in the embodiment of the present application, as an example rather than a limitation, the following will take the electronic device being a smart phone as an example to explain in detail the technical solution of the present application.

[0109] Figure 2 is a schematic diagram of a smart phone provided in an embodiment of the present application. Figure 2 (a) is a front view of a smart phone provided in an embodiment of the present application; Figure 2 (b) is a schematic diagram of the back side of the smart phone provided in the embodiment of the present application.

[0110] like Figure 2As shown, the smartphone provided in the embodiment of the present application includes a display screen 300, a housing 200 and a camera module 100. The housing 200 further includes a middle frame 201 and a back cover 202. The middle frame 201 is a hollow ring-shaped structure, the front end surface of the middle frame 201 is fixedly provided with a display screen 300, and the rear end surface of the middle frame 201 is fixedly provided with a back cover 202. The display screen 300, the middle frame 201 and the back cover 202 together define a housing space for the smartphone, and the housing space is used to install various functional components of the smartphone, such as the camera module 100 in the embodiments described later, as well as other functional components such as a battery, a microphone, and a processor.

[0111] Optionally, the back cover 202 can be covered on the middle frame 201 by screwing, snapping, etc., and a sealing ring can be provided between the back cover 202 and the middle frame 201 to improve the sealing and waterproof effect of the joint between the back cover 202 and the middle frame 201. The sealing ring can be made of highly elastic materials such as silicone or rubber.

[0112] Optionally, the camera module 100 can be used for a rear camera or a front camera. Figure 2 As shown in (a) of the figure, on the front side of the smart phone, the camera module 100 is used for the front camera.

[0113] The high-magnification zoom of the rear cameras of smartphones currently on the market is basically "jump-type" zoom, that is, hybrid optical zoom is achieved by installing two or more lenses with different focal lengths and combining them with algorithm-based digital zoom.

[0114] Therefore, the number of camera modules 100 installed is not limited to one, and may be two or even more. Figure 2 As shown in (b) of FIG. 1 , four camera modules 100 are installed on the back of the smart phone. That is, the embodiment of the present application does not impose any limitation on the number of camera modules 100 installed.

[0115] In order not to affect the appearance of the smart phone and to protect the camera, the smart phone also includes a camera decoration (Deco), which is a hollow shell-shaped decoration made of metal or plastic material.

[0116] In addition, a smart phone may also include functional components such as a processor, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, a microphone, a mobile communication module, an antenna, a wireless communication module, an audio module, a headphone interface, a sensor module, buttons, a camera, and a subscriber identification module (SIM) card interface.

[0117] These functional elements can be modified according to user needs. It can be understood that the specific embodiment introduced above is only a specific implementation method of the present application. Other ways to implement the solution of the present application are also within the scope of protection of the present application and will not be elaborated here.

[0118] The camera module 100 provided in the present application is now described in detail with reference to the accompanying drawings.

[0119] Figure 3 is a schematic diagram of a camera module 100 provided in an embodiment of the present application. Figure 4 yes Figure 2 Schematic diagram of another viewing angle of the camera module 100. Figure 5 yes Figure 3 An exploded view of the camera module 100 in FIG. Figure 6 yes Figure 4 An exploded view of the camera module 100 in FIG.

[0120] like Figure 3-Figure 6 As shown, a camera module 100 provided in an embodiment of the present application includes a lens assembly 10, an anti-shake mechanism 20, a base 30 and a support structure 40. In addition, the camera module 100 also includes a photosensitive chip (not shown in the figure), a focusing mechanism 60 and a housing 80.

[0121] The housing 80 is connected to the base 30 , and together they define an accommodation space for installing the anti-shake mechanism 20 , the support structure 40 , the focusing mechanism 60 , etc. The housing 80 is also provided with a lens telescopic hole for avoiding the lens assembly 10 .

[0122] The lens assembly 10 is used to send outgoing light to the photosensitive chip, that is, to form a light signal of the subject and reflect it to the photosensitive chip. Among them, the lens assembly 10 can be composed of multiple spherical or aspherical lenses with optical properties.

[0123] The photosensitive chip can be mounted on the base 30, or can also be mounted on the bracket of other components. The photosensitive chip is used to receive the outgoing light of the lens assembly 10, that is, the photosensitive chip is used to perform photoelectric conversion and analog signal / digital signal (Analog / Digital, A / D) conversion on the light signal corresponding to the subject, so as to output image data for display units such as the display screen 300. Optionally, the photosensitive chip includes but is not limited to a complementary metal oxide semiconductor (Complementary Metal-Oxide Semiconductor, CMOS) image sensor or a charge coupled device (Charge Coupled Cevice, CCD) image sensor, etc.

[0124] The anti-shake mechanism 20 includes a movable stage 21 and a movable subassembly 22 which are interconnected. The movable stage 21 is used to carry the lens assembly 10 and the focusing mechanism 60. The movable subassembly 22 is configured to be electromagnetically driven to drive the movable stage 21 to carry the lens assembly 10 and the focusing mechanism 60 to move, so as to realize the optical anti-shake function of the lens assembly 10.

[0125] The anti-shake mechanism 20 further includes a stator assembly 23 disposed around the movable assembly 22, and the stator assembly 23 provides electromagnetic driving force for the movable assembly 22 mentioned above. For a more detailed introduction to the anti-shake mechanism 20, please refer to the following embodiments.

[0126] The movable stage 21 is a ring frame structure with a hollowed-out middle portion, and a focusing mechanism 60 is installed in the hollowed-out middle portion of the movable stage 21. The focusing mechanism 60 can drive the lens assembly 10 along the optical axis direction, that is, it can be extended and retracted in the movable stage 21, thereby adjusting the distance between the lens assembly 10 and the photosensitive chip, thereby achieving a focusing function. For a more detailed description of the focusing mechanism 60, please refer to the embodiments described later.

[0127] The base 30 includes a bottom wall 31 stacked on the movable stage 21 .

[0128] The support structure 40 is flatly disposed between the opposite surfaces of the movable stage 21 and the bottom wall 31 , and the movable stage 21 can be translated in any direction along a plane parallel to the bottom wall 31 through the support structure 40 .

[0129] It should be noted that the support structure 40 is arranged flatly, which means that a layer of support structure 40 is distributed along the lower surface of the movable carrier 21, or that a layer of support structure 40 is distributed along the upper surface of the bottom wall 31, that is, the support structure 40 is distributed in only one layer between the movable carrier 21 and the bottom wall 31.

[0130] Optionally, the support structure 40 used in the embodiment of the present application may be a ball 42 rollingly disposed between the movable platform 21 and the bottom wall 31 , or may be a protrusion 41 fixedly disposed on either the movable platform 21 or the bottom wall 31 .

[0131] When the supporting structure 40 is a ball 42, since the track 90 for limiting the rolling direction of the ball 42 is not provided, it can be ensured that the rolling direction of the ball 42 is not restricted, so that the movable platform 21 can be translated in any direction along the plane parallel to the bottom wall 31 through the ball 42, thereby being able to meet the anti-shake compensation action of the movable platform 21 in the X direction and the Y direction. Therefore, there is no need to design a stacked X-direction track 90 and a Y-direction track 90 with the ball 42. The ball 42 in the embodiment of the present application is flatly arranged between the opposite surfaces of the movable platform 21 and the bottom wall 31, that is, only a single layer of balls 42 is required.

[0132] When the support structure 40 is a protrusion 41 fixedly arranged on the movable platform 21 or the bottom wall 31, the protrusion 41 is slidably connected to the bottom wall 31 or the movable platform 21, so that the movable platform 21 can slide in any direction on the bottom wall 31 through the protrusion 41, thereby being able to satisfy the anti-shake compensation action of the movable platform 21 in the X direction displacement and the Y direction displacement. Therefore, there is no need to design a stacked X-direction track 90 and a Y-direction track 90 with balls 42. The protrusion 41 in the embodiment of the present application is flatly arranged between the opposite surfaces of the movable platform 21 and the bottom wall 31, that is, only a single layer of protrusion 41 is required.

[0133] It can be seen that when designing the anti-shake function structure of the camera module 100 in the embodiment of the present application, no matter the supporting structure 40 is the protrusion 41 or the ball 42, compared with the double-layer ball-type linear track in the related art, the thickness dimension is reduced, and the number of components of the ball 42 and the track 90 is also reduced. In this way, the camera module 100 using the anti-shake mechanism 20 can achieve a lightweight design, and also simplifies the structure of the camera module 100, reducing the difficulty and cost of production.

[0134] In addition, the double-layer ball-bearing linear track in the related art uses two layers of balls 42, and the number of balls 42 is large. When the camera module 100 is shaken, a more obvious shaking noise of the balls 42 will be emitted, which will reduce the texture of the electronic device using the camera module 100 and affect the user experience. On the other hand, in the camera module 100 in the embodiment of the present application, when the support structure 40 used is the protrusion 41, since the protrusion 41 is fixedly arranged on the movable platform 21 or the bottom wall 31, there is no problem of "shaking noise of the balls 42" in the related art; when the support structure 40 used is the balls 42, since the balls 42 are arranged in a single layer, compared with the double-layer ball-bearing linear track in the related art, it has the advantage of less number of balls 42, and the corresponding shaking noise of the balls 42 can also be weakened. Therefore, the camera module 100 in the embodiment of the present application can reduce or even directly avoid the shaking and abnormal noise of the ball 42, which improves the product texture and ensures the user experience.

[0135] As mentioned above, the movable lens type anti-shake function structure in the current related art is to suspend the movable stage 21 for carrying the lens and the focusing mechanism 60 above the base 30 through an elastic suspension element. In the embodiment of the present application, the movable stage 21 and the base 30 can also be connected together by an elastic suspension element; or, the movable stage 21 and the base 30 can also be connected together by a magnetic attraction method; or, the movable stage 21 and the base 30 can also be connected together by a combination of an elastic suspension element and a magnetic attraction method. For a more detailed description, please refer to the embodiments described below.

[0136] Optionally, the camera module 100 further includes a filter, which is disposed between the lens assembly 10 and the photosensitive chip. The filter is used to filter out stray light, which can further improve the imaging quality of the lens assembly 10 on the photosensitive chip.

[0137] Optionally, the camera module 100 further includes a filter holder, a light hole is provided in the middle of the filter holder, and on a side close to the lens assembly 10, the opening of the light hole is recessed inward to form a groove, and the filter is fixedly disposed in the groove.

[0138] Figure 7 It is a schematic diagram of a camera module 100 hidden behind a housing 80 provided in an embodiment of the present application. Figure 8 yes Figure 7 Sectional view of AA. Fig. 9 yes Figure 8 An enlarged view of an example at D in the middle.

[0139] As mentioned above, the support structure 40 used in the embodiment of the present application can be a single layer of balls 42, that is, as an embodiment provided by the present application, such as Figure 7-Figure 9 As shown, the support structure 40 includes a ball 42 rollingly disposed between the movable stage 21 and the bottom wall 31 .

[0140] In this embodiment, the support structure 40 is designed as a ball 42, so that the friction resistance generated between the movable platform 21 and the bottom wall 31 during relative translation is a smaller rolling friction resistance. This can ensure the flexibility of the movable platform 21 during movement, reduce the difficulty and load when the movable component 22 is electromagnetically driven, and thus reduce the design difficulty of the anti-shake mechanism 20.

[0141] As mentioned above, since the lens assembly 10 is usually composed of multiple spherical or aspherical lenses with optical properties, the lens assembly 10 is relatively heavy, which makes the load on the movable platform 21 relatively large. When using a flat single-layer ball 42, the parts of the movable platform 21 and the bottom wall 31 that contact the ball 42 may be pressed into pits, thereby affecting the rolling effect of the ball 42, and further causing the movable platform 21 to be stuck.

[0142] Therefore, in order to solve the above problems, Fig. 9 As shown, in one embodiment provided in the present application, a portion of the bottom wall 31 corresponding to the ball 42 and / or a portion of the movable platform 21 corresponding to the ball 42 has a reinforcing pad 421 .

[0143] In this embodiment, the reinforcing pad 421 is made of a material with relatively high hardness, which can effectively prevent the movable platform 21 and the bottom wall 31 from being pressed into a pit at the part in contact with the ball 42 .

[0144] Furthermore, since the reinforcing pads 421 are added only to the bottom wall 31 and the movable platform 21 at the positions corresponding to the balls 42, the other parts of the base 30 and the movable platform 21 can use plastic materials with lower hardness, lower cost, and less difficulty in processing, thereby reducing the overall manufacturing cost of the movable platform 21 and the base 30 while ensuring that the local hardness is relatively strong.

[0145] Optionally, when the base 30 and the movable carrier 21 are made of plastic, polyvinylchloride (PVC), polyethylene (PE), polypropylene (PP), etc. may be selected.

[0146] In an embodiment provided in the present application, the reinforcing pad 421 is made of carbon fiber or metal.

[0147] Specifically, the carbon fiber material has a higher hardness than conventional plastic materials. Even a thinner carbon fiber reinforced pad 421 can support the ball 42 without being pressed into a pit.

[0148] Specifically, the metal in this embodiment can be a single metal or an alloy. The alloy can achieve a higher Brinell hardness. For example, adding elements such as manganese (Mn), chromium (Cr), and tungsten (W) to the steel pad can improve the strength of the alloy pad, and can also support the ball 42 without being pressed into a pit in a thinner case.

[0149] Optionally, when the base 30 or the movable stage 21 is made of plastic, the carbon fiber or metal reinforcement pad 421 can be molded on the base 30 or the movable stage 21 by insert molding.

[0150] Optionally, when the reinforcing pad 421 is fixedly connected to the bottom wall 31 or the movable platform 21, it can also be bonded with an adhesive, or locked with screws, or plugged with a socket structure, or snapped with a snap structure, or a groove can be opened on the opposite surface of the bottom wall 31 or the movable platform 21, and the reinforcing pad 421 can be embedded and fixed in the groove.

[0151] In order to conveniently position and install the ball 42 and prevent the ball 42 from being dislocated due to vibration, falling, etc. of the camera module 100, optionally, a receiving groove 211 for limiting the ball 42 is provided on either the bottom wall 31 or the movable platform 21, that is, the several embodiments described below.

[0152] In an embodiment provided in the present application, a portion of the movable platform 21 corresponding to the ball 42 has a receiving groove 211 for limiting the ball 42 .

[0153] Optionally, the accommodating groove 211 may be formed by a depression on the surface of the movable stage 21 ; or, the accommodating groove 211 may also be formed by a protruding block protruding from the surface of the movable stage 21 .

[0154] Fig.10 It is a schematic diagram of an example of the movable stage 21 provided in an embodiment of the present application.

[0155] like Fig.10 As shown, in an embodiment provided in the present application, when the receiving groove 211 is disposed on the movable stage 21 , the receiving groove 211 is formed by the indentation of the surface of the movable stage 21 .

[0156] Since the movable stage 21 itself has a certain thickness, it ensures that the focusing mechanism 60 has sufficient movement stroke in the thickness direction to meet the focusing design requirements of the lens assembly 10. Therefore, the portion of the movable stage 21 corresponding to the ball 42 also has a certain thickness, and the accommodating groove 211 is formed inwardly on the surface of the movable stage 21, which not only provides installation space for the ball 42, but also reduces the deadweight of the movable stage 21, so that the movable stage 21 can be electromagnetically driven with a lower load, thereby further reducing the design difficulty of the anti-shake mechanism 20.

[0157] Fig.11 It is a schematic diagram of an example of a base 30 provided in an embodiment of the present application.

[0158] like Fig.11 As shown, in one embodiment provided in the present application, a portion of the bottom wall 31 corresponding to the ball 42 has an accommodating groove 211 for limiting the ball 42 .

[0159] Since the bottom wall 31 itself has a small thickness and does not have the condition to be sunken into a groove, it can be formed by surrounding a protruding block protruding from the surface of the bottom wall 31. Of course, if the bottom wall 31 is thickened, a sunken groove can also be formed.

[0160] As mentioned above, the support structure 40 may also be a protrusion 41 fixedly disposed on either the movable stage 21 or the bottom wall 31 , that is, several embodiments described below.

[0161] Fig.12It is a schematic diagram of another example of the base 30 provided in an embodiment of the present application. Fig.13 yes Figure 8 An enlarged view of another example at D in the middle.

[0162] like Figure 12-13 As shown, in one embodiment provided in the present application, the protrusion 41 is fixedly disposed on the bottom wall 31 , and the surface of the movable platform 21 facing the bottom wall 31 is slidably connected to the protrusion 41 .

[0163] In the present embodiment, when the support structure 40 is composed of the protrusion 41, the protrusion 41 is fixedly set on the bottom wall 31 instead of being set on the movable platform 21. This can reduce the dead weight of the movable platform 21, so that the movable platform 21 can be electromagnetically driven with a lower load, thereby further reducing the design difficulty of the anti-shake mechanism 20.

[0164] Of course, in another embodiment provided in the present application, the protrusion 41 may also be on the movable stage 21 . Fig.14 is a schematic diagram of another example of the movable stage 21 provided in the embodiment of the present application, such as Fig.14 As shown, the protrusion 41 is fixedly disposed on the movable platform 21 , and the surface of the bottom wall 31 facing the movable platform 21 is slidably connected to the protrusion 41 .

[0165] Optionally, the shape of the protrusion 41 can be a hemisphere, a cylinder, a truncated cone, a cube, etc.

[0166] Optionally, the side opposite to the protrusion 41, that is, the movable stage 21 or the bottom wall 31, may also be subjected to a self-lubricating treatment.

[0167] In the above-mentioned embodiment, the supporting structure 40 is designed as a protrusion 41, so that the ball 42 is not used, thereby completely solving the problem of "the ball 42 shaking and making abnormal noise" in the related technology. In addition, the ball 42 limiting structure provided on the movable platform 21 or the bottom wall 31, such as the accommodating groove 211 mentioned above, can also be omitted. This reduces the production cost of the movable platform 21 or the base 30, and also completely solves the problem of preventing the ball 42 from falling off, thereby ensuring the anti-vibration effect of the camera module 100.

[0168] As mentioned above, in the embodiment of the present application, the support structure 40 adopts the method of ball bearings 42 to reduce the friction resistance of the movable platform 21 relative to the base 30 during translation. Therefore, the sliding contact end surface of the protrusion 41 can also be lubricated, thereby achieving a low friction resistance effect like rolling friction.

[0169] In one embodiment provided in the present application, the protrusion 41 has the same base material as the movable stage 21, the protrusion 41 and the movable stage 21 are integrally formed, and a wear-resistant coating is provided at the contact end of the protrusion 41 and the bottom wall 31, so that the protrusion 41 has a self-lubricating effect and wear resistance. Alternatively, in another embodiment provided in the present application, a solid lubricant can be applied to the contact end of the protrusion 41 and the bottom wall 31.

[0170] In one embodiment provided in the present application, the base material of the protrusion 41 is the same as that of the base 30, the protrusion 41 and the base 30 are integrally formed, and a wear-resistant coating is provided at the contact end of the protrusion 41 and the movable stage 21, so that the protrusion 41 has a self-lubricating effect and wear resistance. Alternatively, in another embodiment provided in the present application, a solid lubricant can be applied to the contact end of the protrusion 41 and the movable stage 21.

[0171] Optionally, the wear-resistant coating may be a diamond-like carbon (DLC) coating, which has wear resistance and self-lubricating properties and can be deposited by physical vapor deposition (PVD) and chemical vapor deposition (CVD).

[0172] In addition to the above-mentioned cases, the protrusion 41 may also be directly processed and supported by a self-lubricating material. That is, in an embodiment provided in the present application, the material of the protrusion 41 is a self-lubricating material.

[0173] Optionally, the self-lubricating material may use engineering plastics, such as polytetrafluoroethylene (PTFE), polyformaldehyde (POM), polycarbonate (PC), polyamide (PA), etc.

[0174] The self-lubricating material used in this embodiment can reduce the friction resistance when the protrusion 41 slides on the movable stage 21 or the bottom wall 31, so as to reduce the energy loss of the anti-shake mechanism 20 and improve the flexibility of the movable stage 21 during translation.

[0175] Optionally, the shape of the bottom wall 31 is square, or substantially square. In order to minimize the number of parts, such as Fig.12 As shown, in one embodiment provided by the present application, only one protrusion 41 may be provided at each of the four corners of the bottom wall 31. Similarly, in another embodiment provided by the present application, four balls 42 are provided at each of the four corners of the bottom wall 31.

[0176] Fig.23 is a schematic diagram of another example of the base 30 provided in the embodiment of the present application, such as Fig.23 As shown, in one embodiment provided by the present application, four protrusions 41 are respectively arranged at the middle of four sides of the bottom wall 31. Similarly, in another embodiment provided by the present application, four balls 42 are respectively arranged at the middle of four sides of the bottom wall 31.

[0177] As mentioned above, in the embodiments of the present application, in addition to using elastic suspension elements to connect the movable platform 21 and the base 30 together, the movable platform 21 and the base 30 can also be connected together by magnetic attraction, which is the technical solution provided in the following embodiments.

[0178] Fig.15 yes Figure 7 Cross-sectional view of BB. Fig.16 yes Fig.15 Enlarged view of point E in the middle. Fig.17 yes Figure 7 Cross-sectional view of CC. Fig.18 yes Fig.17 Enlarged view of point F in the middle.

[0179] For example Figure 5-Figure 6 , and Figure 15-18 As shown, in one embodiment provided in the present application, the mover assembly 22 includes a magnetic assembly fixedly disposed on the movable carrier 21 , and the bottom wall 31 is provided with a magnetic attraction fitting 312 that can be attracted by the magnetic assembly.

[0180] In the related art, a combination of a spring sheet and a suspension wire is usually used as an elastic suspension element, and the two ends of the suspension wire are respectively connected to the movable stage 21 and the base 30, so that the movable stage 21 and the base 30 are connected together to prevent the movable stage 21 from being separated from the base 30. In the case where the lens assembly 10 is heavy, the load of the suspension wire is large, and it is easy to deform or break. In addition, the elasticity of the suspension wire will cause the lens assembly 10 to change in the direction of gravity and the direction against gravity to form different expansion and contraction amounts, thereby causing the lens assembly 10 to have different inductive differences in performance when the postures of the lens assembly 10 change, thereby causing the lens assembly 10 to be compensated inaccurately.

[0181] In the present embodiment, the magnetic assembly attracts the magnetic fitting 312, thereby avoiding the use of easily breakable structures such as suspension wires. Furthermore, since the movable carrier 21 is tightly attracted to the base 30 by magnetic attraction, no matter the lens assembly 10 is in the direction of gravity or against gravity, or whether it changes from gravity to against gravity in an instant, there will be no compensation induction difference due to the posture change of the lens assembly 10, so that the lens assembly 10 can be accurately compensated for anti-shake displacement.

[0182] For example Fig.16 , Fig.18 As shown, in one embodiment provided in the present application, the projections of the magnetic component and the magnetically attracted fitting 312 on the surface of the bottom wall 31 at least partially overlap.

[0183] This embodiment can also be understood as that the magnetic component and the magnetic attraction fitting 312 are relatively arranged in the longitudinal direction (i.e., the thickness direction or the Z direction), so that the attraction of the magnetic component to the magnetic attraction fitting 312 is along the longitudinal direction, avoiding the occurrence of lateral force components that cause the movable carrier 21 to deflect.

[0184] Optionally, the material of the magnetic fitting 312 is a cold-rolled carbon steel sheet, a ferritic stainless steel sheet, a silicon steel sheet, etc.

[0185] For example Fig.16 , Fig.18 As shown, in one embodiment provided in the present application, the magnetic attraction fitting 312 is embedded inside the bottom wall 31 .

[0186] In this embodiment, the magnetic fitting 312 is embedded in the interior of the bottom wall 31, which can ensure that the surface of the bottom wall 31 is smooth and free of foreign matter, thereby preventing the anti-shake mechanism 20 from interfering with and obstructing the movable carrier 21 when performing the optical image stabilization function. In addition, the magnetic fitting 312 is embedded in the interior of the bottom wall 31, which also has the effect of strengthening and toughening the base 30, thereby improving the mechanical strength and service life of the base 30.

[0187] For example Figure 5 As shown, in an embodiment provided in the present application, the anti-shake mechanism 20 also includes a stator assembly 23, and the stator assembly 23 includes an X-direction electromagnetic coil 231 and a Y-direction electromagnetic coil 232 arranged on adjacent two sides of the base 30, and the X-direction electromagnetic coil 231 and the Y-direction electromagnetic coil 232 are located on the periphery of the movable carrier 21.

[0188] The magnetic assembly includes an X-direction magnetic component 221 and a Y-direction magnetic component 222 . The X-direction magnetic component 221 is disposed on the side of the movable stage 21 facing the X-direction electromagnetic coil 231 , and the Y-direction magnetic component 222 is disposed on the side of the movable stage 21 facing the Y-direction electromagnetic coil 232 .

[0189] Fig.19 It is a schematic diagram of the base 30 and the movable stage 21 provided in the embodiment of the present application when they are disassembled.

[0190] like Fig.19 As shown, the working principle of this embodiment is: the X-direction magnetic member 221 is driven by the X-direction electromagnetic coil 231 to drive the movable carrier 21 to move in the X direction; the Y-direction magnetic member 222 is driven by the Y-direction electromagnetic coil 232 to drive the movable carrier 21 to move in the Y direction.

[0191] In this embodiment, the magnetic component has a dual function. It is not only used to attract the magnetic fitting 312 to connect the movable platform 21 and the base 30 together, but also serves as an electromagnetic induction magnet to be electromagnetically driven to drive the movable platform 21 to translate.

[0192] Optionally, when the X-axis magnetic component 221 and the Y-axis magnetic component 222 are fixedly connected to the movable carrier 21, they can be bonded by adhesive, or locked by screws, or plugged by a socket structure, or snapped by a snap structure, or grooves can be opened on the opposite surfaces of the movable carrier 21 to embed and fix the X-axis magnetic component 221 and the Y-axis magnetic component 222 in the grooves.

[0193] In an embodiment provided in the present application, the mover assembly 22 further includes a first magnetic conductive sheet 223 , and two first magnetic conductive sheets 223 are respectively fixedly disposed on the X-direction magnetic component 221 and the Y-direction magnetic component 222 .

[0194] In this embodiment, the first magnetic conductive sheet 223 is a paramagnetic material, which has the function of changing the direction of the magnetic field and converging the magnetic field in the magnetic circuit, and can enhance the magnetic field strength of the X-direction magnetic component 221 and the Y-direction magnetic component 222, making them more sensitive when driven by electromagnetic force.

[0195] Optionally, the first magnetic conductive sheet 223 is made of cold-rolled carbon steel sheet, ferritic stainless steel sheet, silicon steel sheet, etc.

[0196] As mentioned above, the movable stage 21 is connected to the base 30 by using a magnetic assembly to attract the magnetic fitting 312, so that the longitudinal support force provided by the suspension wire is not required. However, in the lateral or radial direction of the lens assembly 10, an elastic restoring force needs to be applied to the movable stage 21, so that the movable stage 21 can carry the lens assembly 10 and maintain it near the center of the optical axis without being subjected to force.

[0197] Fig. 20 yes Fig.19 Schematic diagram of the base 30 and the movable stage 21 when assembled.

[0198] like Fig. 20 As shown, in order to achieve the above-mentioned effect, in an embodiment provided in the present application, the camera module 100 further includes: an elastic member 50 for elastically connecting the movable platform 21 to the base 30 .

[0199] There may be four elastic members 50 in this embodiment, which are respectively arranged at the four corners of the movable stage 21 or in the middle of the four sides. The two ends of each elastic member 50 are respectively connected to the movable stage 21 and the base 30, and an elastic restoring force is preset. The four elastic members 50 generate a balanced elastic restoring force, which can enable the movable stage 21 to stay in the middle of the base 30 when not under force, so that the lens assembly 10 located on the movable stage 21 can be maintained near the center of the optical axis.

[0200] Optionally, the elastic member 50 may be a leaf spring or a cylindrical spring.

[0201] Fig.21 yes Fig. 20 An enlarged view of an example at G in the middle.

[0202] In order to conveniently fix and install the elastic member 50, as Fig.21 As shown, in an embodiment provided in the present application, the base 30 further includes a column 32 fixedly disposed at a corner position of the bottom wall 31 , and the elastic member 50 is sheet-shaped and its two ends are respectively connected to the column 32 and the movable carrier 21 .

[0203] The elastic member 50 in this embodiment is in the form of a sheet, and the two ends of the elastic member 50 are connecting parts with a larger area, and the middle part of the elastic member 50 is a bending part. The connecting parts at the two ends are respectively connected to the top surface of the column 32 and the movable carrier 21, and the bending part in the middle is used to store and release elastic potential energy.

[0204] It should be noted that the corner position can also be understood as the turning corner or corner of the bottom wall 31 . When the column 32 is arranged at the corner position of the bottom wall 31 , it is necessary to avoid the support structure 40 .

[0205] As mentioned above, in the embodiment of the present application, the elastic member 50 and the magnetic attraction method can be combined to connect the movable platform 21 and the base 30. Therefore, the elastic member 50 in this embodiment not only has the function of resetting the movable platform 21 in the middle of the base 30, but also has the function of providing longitudinal support force for the movable platform 21 and the base 30 to prevent the movable platform 21 and the base 30 from separating.

[0206] Fig. 22 yes Fig. 20 An enlarged view of another example at G in the middle.

[0207] like Fig. 22 As shown, in an embodiment provided in the present application, the camera module 100 further includes: a suspension wire 70 , and two ends of the suspension wire 70 are respectively connected to the bottom wall 31 and the elastic member 50 .

[0208] In this embodiment, the suspension wire 70 is further introduced to reduce the difficulty of designing the elastic member 50. This is because: when designing the elastic member 50, it is bent and deformed multiple times when determining or adjusting its elastic modulus, which makes the design more difficult. After the suspension wire 70 and the elastic member 50 are combined with each other, the overall elastic modulus of the suspension wire 70 and the elastic member 50 can be determined or adjusted by adjusting the thickness and length of the suspension wire 70, and the corresponding design difficulty is lower.

[0209] For example Figure 6 , Fig.15 As shown, in one embodiment provided in the present application, the camera module 100 also includes: a focusing mechanism 60, the focusing mechanism 60 includes a focusing drive chip 61, and the focusing mechanism 60 also includes a lens frame 62, a guide column 66, a Z-direction electromagnetic coil 63 and a Z-direction magnetic member 64. The lens frame 62 is used to install the lens assembly 10, and the lens frame 62 is slidably connected to the movable stage 21 through the guide column 66. The lens frame 62 can be displaced along the Z direction or thickness direction of the movable stage 21. The Z-direction electromagnetic coil 63 is fixed to the inner side wall of the movable stage 21, and the Z-direction magnetic member 64 is fixed to the outer side wall of the lens frame 62. The focusing drive chip 61 is used to adjust the current direction and size of the Z-direction electromagnetic coil 63, so as to generate different electromagnetic directions and intensities to cooperate with the Z-direction magnetic member 64 for magnetic attraction, so that the Z-direction magnetic member 64 drives the lens frame 62 to carry the lens assembly 10 to reciprocate in the thickness direction of the movable stage 21, thereby achieving focusing.

[0210] Optionally, the focusing mechanism 60 further includes a second magnetic conductive sheet 65, which is fixed to the Z-direction magnetic member 64 and can converge the magnetic field, thereby enhancing the magnetic field around the Z-direction magnetic member 64 and making it more sensitive when driven electromagnetically.

[0211] Optionally, the Z-direction magnetic member 64 is provided with two opposite magnetic poles, which can increase the magnetic flux density, that is, increase the magnetic induction intensity, thereby strengthening the surrounding magnetic field. The magnetic induction intensity is also called magnetic flux density or magnetic flux density, which refers to a physical quantity that describes the strength and direction of the magnetic field. The larger the value of the magnetic induction intensity, the stronger the magnetic field.

[0212] In order to meet the power supply and data transmission requirements of the focusing driver chip 61 and conveniently electrically connect the focusing driver chip 61 with the external control motherboard, the present embodiment electrically connects the focusing driver chip 61 with the pin 311 arranged on the bottom wall 31 through the movable carrier 21, the elastic member 50, and the base 30 in sequence, and the pin 311 is used to electrically connect with the external control motherboard.

[0213] Optionally, when the movable stage 21 , the elastic member 50 , and the base 30 are electrically connected, a circuit coating may be provided on the movable stage 21 , the elastic member 50 , and the base 30 .

[0214] Specifically, the circuit coating can be formed on the movable carrier 21, the elastic member 50, and the base 30 by laser direct structuring (LDS); or, it can also be formed on the movable carrier 21, the elastic member 50, and the base 30 by direct pad printing (PDS).

[0215] In an embodiment provided in the present application, a focusing drive chip 61 is arranged on the movable carrier 21 through a circuit board 611, the movable carrier 21 and the base 30 are respectively embedded with conductive parts, and a conductive part is arranged on the elastic part 50. The circuit board 611, the conductive part of the movable carrier 21, the conductive part of the elastic part 50, and the conductive part of the base 30 are electrically connected in sequence.

[0216] In this embodiment, the conductive circuits can be located inside the components or attached to the surface to prevent the conductive circuits from extending outward and causing interference and obstruction to the anti-shake and focus adjustment mechanisms.

[0217] Optionally, the conductive member may be a copper wire, a bare wire, a conventional wire, a flexible flat cable (FFC), or the like.

[0218] Optionally, the circuit board 611 may be a printed circuit board (PCB) or a flexible printed circuit (FPC).

[0219] In addition, the X-direction electromagnetic coil 231 and the Y-direction electromagnetic coil 232 of the anti-shake mechanism 20 mentioned above also have corresponding circuit boards and anti-shake driving chips, and the installation design method can be similar to that of the focusing mechanism 60, which will not be repeated here.

[0220] In the related art, only one conductive member is provided on a single elastic member 50, and corresponds to one circuit, while the driving chip 61 usually has multiple interfaces, so multiple circuits are required. In this way, each elastic member 50 needs to be utilized, so that multiple circuits are dispersed on each elastic member 50, which will bring about a problem, that is, the internal conductive members of the corresponding movable stage 21 and base 30 are also relatively dispersed, and are dispersed into multiple paths respectively connected to the corresponding elastic members 50, thereby increasing the difficulty of processing and producing the conductive members embedded in the movable stage 21 and base 30.

[0221] Therefore, in order to solve the above problem, in one embodiment provided in the present application, there are multiple conductive members on a single elastic member 50. In this way, two to four circuits can be centrally arranged through a single elastic member 50, thereby avoiding the internal conductive members of the movable stage 21 and the base 30 from being dispersed, thereby reducing the difficulty of manufacturing and processing the conductive members embedded in the movable stage 21 and the base 30.

[0222] Finally, it should be noted that the above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A camera module, characterized in that: include: A lens assembly (10) is used to send outgoing light to a photosensitive chip; An anti-shake mechanism (20) comprises a movable carrier (21) and a movable subassembly (22) connected to each other, wherein the movable carrier (21) is used to carry the lens assembly (10), and the movable subassembly (22) is configured to be electromagnetically driven to drive the movable carrier (21) to move while carrying the lens assembly (10); A base (30) comprising a bottom wall (31) stacked with the movable carrier (21); The support structure (40) is flatly arranged between the opposite surfaces of the movable carrier (21) and the bottom wall (31), and the movable carrier (21) can be translated in any direction along a plane parallel to the bottom wall (31) through the support structure (40).

2. The camera module according to claim 1, characterized in that: The support structure (40) comprises a ball (42) rollingly arranged between the movable carrier (21) and the bottom wall (31).

3. The camera module according to claim 2, characterized in that: The portion of the bottom wall (31) corresponding to the ball (42) and / or the portion of the movable carrier (21) corresponding to the ball (42) has a reinforcing pad (421).

4. The camera module according to claim 2 or 3, characterized in that: One of the bottom wall (31) and the movable carrier (21) is provided with a receiving groove (211) for limiting the rolling ball (42).

5. The camera module according to claim 4, characterized in that: The accommodating groove (211) is arranged on the movable carrier (21), and the accommodating groove (211) is formed by an indentation on the surface of the movable carrier (21).

6. The camera module according to any one of claims 1 to 5, characterized in that: The supporting structure (40) comprises a protruding portion (41), wherein the protruding portion (41) is fixedly arranged on one of the bottom wall (31) and the movable carrier (21), and the other is slidably connected to the protruding portion (41).

7. The camera module according to claim 6, characterized in that: The protruding portion (41) is fixedly arranged on the bottom wall (31), and the movable carrier (21) is slidably connected to the protruding portion (41).

8. The camera module according to claim 6 or 7, characterized in that: The material of the raised portion (41) is a self-lubricating material.

9. The camera module according to any one of claims 1 to 8, characterized in that: The movable subassembly (22) comprises a magnetic assembly fixedly arranged on the movable carrier (21), and the bottom wall (31) is provided with a magnetic attraction fitting (312) that can be attracted by the magnetic assembly.

10. The camera module according to claim 9, characterized in that: The projections of the magnetic component and the magnetically attracted fitting (312) on the surface of the bottom wall (31) at least partially overlap.

11. The camera module according to claim 9 or 10, characterized in that: The magnetic attraction fitting (312) is embedded in the bottom wall (31).

12. The camera module according to any one of claims 9 to 11, characterized in that: The anti-shake mechanism (20) further comprises a stator assembly (23), wherein the stator assembly (23) comprises an X-direction electromagnetic coil (231) and a Y-direction electromagnetic coil (232) arranged on two adjacent sides of the base (30), and the X-direction electromagnetic coil (231) and the Y-direction electromagnetic coil (232) are located on the periphery of the movable carrier (21); The magnetic component comprises an X-direction magnetic component (221) and a Y-direction magnetic component (222); the X-direction magnetic component (221) is arranged on a side of the movable carrier (21) facing the X-direction electromagnetic coil (231); and the Y-direction magnetic component (222) is arranged on a side of the movable carrier (21) facing the Y-direction electromagnetic coil (232).

13. The camera module according to claim 12, characterized in that: The movable subassembly (22) further comprises a first magnetic conductive sheet (223), wherein two first magnetic conductive sheets (223) are respectively fixedly arranged on the X-direction magnetic component (221) and the Y-direction magnetic component (222).

14. The camera module according to any one of claims 1 to 13, characterized in that: Also includes: An elastic member (50) is used to elastically connect the movable carrier (21) to the base (30).

15. The camera module according to claim 14, characterized in that: The base (30) further comprises a column (32) fixedly arranged at a corner position of the bottom wall (31); the elastic member (50) is sheet-shaped and its two ends are respectively connected to the column (32) and the movable carrier (21).

16. The camera module according to claim 14, characterized in that: Also includes: A suspension wire (70), wherein two ends of the suspension wire (70) are respectively connected to the bottom wall (31) and the elastic member (50).

17. The camera module according to claim 14 or 15, characterized in that: Also includes: A focusing mechanism (60), the focusing mechanism (60) comprising a driving chip (61), the driving chip (61) being electrically connected to a pin (311) arranged on the bottom wall (31) via the movable carrier (21), the elastic member (50), the base (30) in sequence.

18. The camera module according to claim 17, characterized in that: The driving chip (61) is arranged on a circuit board (611), the movable carrier (21) and the base (30) are respectively embedded with conductive parts, the elastic part (50) is provided with a conductive part, and the circuit board (611), the conductive part of the movable carrier (21), the conductive part of the elastic part (50), the conductive part of the base (30), and the pin (311) are electrically connected in sequence.

19. The camera module according to claim 18, characterized in that: The number of conductive members on a single elastic member (50) is multiple.

20. The camera module according to claim 6 or 7, characterized in that: The surface of the raised portion (41) is provided with a wear-resistant coating.

21. The camera module according to claim 8, characterized in that: The self-lubricating material includes at least one of polytetrafluoroethylene, polyoxymethylene, polycarbonate and polyamide.

22. The camera module according to claim 3, characterized in that: The reinforcing pad (421) is made of carbon fiber or metal.

23. The camera module according to any one of claims 1 to 22, characterized in that: The supporting structure (40) is distributed at the corner positions of the bottom wall (31).

24. An electronic device, characterized in that: It comprises a housing (200) and a camera module (100) as claimed in any one of claims 1 to 23, wherein the camera module (100) is installed inside the housing (200).

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