Driving device and camera module

Abstract

The application discloses a driving device and a camera module, and belongs to the technical field of the camera module. The driving device comprises a flexible piece, a carrier and a supporting piece. The flexible piece comprises a mounting part and an elastic part which are connected. The carrier is connected with the mounting part, and a first coil assembly is arranged on the carrier. The supporting piece is connected with the carrier, and comprises a first support and at least two second coil assemblies arranged on the circumferential surface of the first support. At least one driving magnet is arranged opposite to the first coil assembly, and the driving magnet is arranged around the circumferential surface of the first support and adjacent to the circumferential surface. The driving device and the camera module are beneficial to reducing the overall size of the camera module, so that the miniaturization design of the camera module is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera modules, in particular to a driving device and a camera module. BACKGROUND

[0002] With the development of technology, camera modules are increasingly miniaturized, and also have portability because they can be installed on portable devices such as mobile phones, personal digital assistants, and notebooks. However, when taking pictures, the portable device is prone to shaking, which makes the image captured by the camera module blurred.

[0003] In order to make the image captured by the camera module clear, the prior art uses a driving motor to drive the lens to move to achieve automatic focusing and optical anti-shake. However, as users increasingly demand higher image clarity, the size and weight of the lens of the camera module also increase, and the requirements for the load bearing and driving force of the driving motor are increasingly high, which leads to an increase in the size of the driving motor, thereby increasing the overall size of the camera module, which is not conducive to the miniaturization design of the camera module. SUMMARY

[0004] The present application provides a driving device and a camera module, which solves or partially solves the technical problem of the large size of the camera module in the prior art, which is not conducive to the miniaturization design of the camera module.

[0005] To solve the above technical problems, the present application provides a driving device comprising: a flexible member comprising a mounting portion and an elastic portion connected thereto; a carrier connected to the mounting portion, the carrier being provided with a first coil assembly; a support member connected to the carrier, the support member comprising a first support and at least two second coil assemblies arranged on the peripheral surface of the first support; at least one driving magnet arranged opposite the first coil assembly, the driving magnet being arranged around the peripheral surface of the first support and adjacent to the peripheral surface; wherein the first coil assembly generates a magnetic force after being energized to interact with the driving magnet to drive the support member to move the carrier, the carrier drives the mounting portion to move in one of the vertical direction or the horizontal direction against the elastic force of the elastic portion, and the second coil assembly generates a magnetic force after being energized to interact with the driving magnet to drive the support member to move the carrier, the carrier drives the mounting portion to move in the other of the vertical direction or the horizontal direction against the elastic force of the elastic portion.

[0006] Further, the driving magnet is provided with two end portions extending along the length of the square, and the end portions correspond to the second coil assemblies.

[0007] Further, the two end portions correspond to the second coil assemblies, respectively, or one end portion corresponds to the second coil assembly.

[0008] Further, the first support is in a frame type, the frame type includes a plurality of sides and adjacent two sides intersect to form a corner, the second coil assembly is arranged at the corner of the first support, and the driving magnet is arranged at the side of the first support.

[0009] Further, the first support is in a frame type, the frame type includes a plurality of sides and adjacent two sides intersect to form a corner, the second coil assembly is arranged at the side of the first support, and the driving magnet is arranged at the side of the first support.

[0010] Further, the first coil assembly is a coil body etched on the carrier plate.

[0011] Further, the flexible member includes a flexible spring plate, the flexible spring plate is provided with a hollow part, the flexible spring plate is provided with the mounting part at the middle part after being hollowed, the flexible spring plate is provided with a frame part at the edge part after being hollowed, and the elastic part is arranged in the hollow part of the flexible spring plate.

[0012] Further, the flexible member includes a support layer, an insulating layer arranged on the support layer, and a circuit layer arranged on the upper surface of the support layer away from the insulating layer, wherein the insulating layer is provided with a wire groove, and the wire groove is formed with the circuit layer by electroplating.

[0013] Based on the same inventive concept, the application further provides a camera module, which comprises a filter, a camera assembly, an imaging chip and the driving device, the filter is arranged in the support of the driving device and opposite to the camera assembly, the imaging chip is mounted on the carrier of the driving device, and the driving device drives the imaging chip to move in one of the vertical direction and / or the horizontal direction.

[0014] Further, the camera module further comprises a box body accommodating the flexible member, the carrier, the support and the driving magnet, and the camera module further comprises a spring assembly arranged in the box body and connected with the carrier, the spring assembly comprises a spring and a gasket, the inner ring of the spring is connected with the support, the outer ring of the spring is connected with the box body, the inner ring of the spring and the outer ring of the spring are connected through an elastic member, and the gasket is arranged in the box body and between the spring and the driving magnet.

[0015] Further, the camera assembly comprises a fixing member arranged outside the box body of the driving device and an optical lens arranged in the fixing member.

[0016] Further, the fixing member is provided with a motor driving the optical lens to move.

[0017] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0018] When focusing, the first coil assembly is powered, according to the right-hand screw rule, hold the power supply straight conductor with the right hand, let the thumb point to the current direction in the straight conductor, then the four fingers point to the direction of the magnetic field around the power supply conductor, like repels like, unlike attracts, the first coil assembly generates a magnetic force after being powered, which interacts with the drive magnet to drive the support to move the carrier, the carrier drives the carrying part to move in the vertical direction against the elastic force of the elastic part, and the imaging chip is installed on the carrier, the carrier supports the imaging chip, and the imaging chip is freely moved in the vertical direction to change the distance between the imaging chip and the camera assembly of the camera module, so as to meet the focusing requirement of the camera module and ensure clear focusing, when the automatic focusing is completed, the first coil assembly is powered off, and the carrier is reset under the elastic force of the elastic part, and then the carrier resets the imaging chip.

[0019] When anti-shake is to be performed, the second coil assembly is powered, according to the right-hand screw rule, hold the power supply straight conductor with the right hand, let the thumb point to the current direction in the straight conductor, then the four fingers point to the direction of the magnetic field around the power supply conductor, like repels like, unlike attracts, the second coil assembly generates a magnetic force after being powered, which interacts with the drive magnet to drive the support to move the carrier, the carrier drives the carrying part to move in the horizontal direction against the elastic force of the elastic part, the carrier drives the imaging chip to freely move in the horizontal direction to provide compensation in the horizontal direction, and anti-shake is realized, when the anti-shake is completed, the second coil assembly is powered off, and the carrier is reset under the elastic force of the elastic part, and then the carrier resets the imaging chip.

[0020] The present application drives the carrier to move the imaging chip in the vertical direction to realize automatic focusing, drives the carrier to move the imaging chip in the horizontal direction to realize anti-shake, the imaging chip is small in size and light in weight relative to the lens, the first coil assembly, the second coil assembly and the drive magnet are small in size and light in weight, miniaturization and light weight are realized, which is beneficial to reducing the overall size of the camera module to realize the miniaturized design of the camera module. At the same time, since the imaging chip is small in weight and the load of the first coil assembly, the second coil assembly and the drive magnet is light, the inertia of the action is small, the control is simple, and the precision and speed of automatic focusing and anti-shake are improved.

[0021] The first coil assembly and the second coil assembly of the present application share one drive magnet, which further realizes miniaturization and light weight, and is beneficial to reducing the overall size of the camera module to realize the miniaturized design of the camera module. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1A structural schematic diagram of a driving device provided by an embodiment of the present application;

[0023] Figure 2 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 An exploded view of the driving device;

[0024] Figure 3 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 An assembly schematic diagram of the driving device;

[0025] Figure 4 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A cooperation schematic diagram of the support and the carrier of the driving device;

[0026] Figure 5 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 4 An exploded view of the driving device;

[0027] Figure 6 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 4 A-A sectional view of the driving device;

[0028] Figure 7 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A structural schematic diagram of the carrier of the driving device;

[0029] Figure 8 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A structural schematic diagram of the flexible member of the driving device;

[0030] Figure 9 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A composition schematic diagram of the flexible member;

[0031] Figure 10 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A first arrangement schematic diagram of the second coil assembly of the driving device;

[0032] Figure 11 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A second arrangement schematic diagram of the second coil assembly of the driving device;

[0033] Figure 12 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A third arrangement schematic diagram of the second coil assembly of the driving device;

[0034] Figure 13 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A fourth arrangement schematic diagram of the second coil assembly of the driving device;

[0035] Figure 14 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A fifth arrangement schematic diagram of the second coil assembly of the driving device;

[0036] Figure 15 A structural schematic diagram of a driving device provided by an embodiment of the present application; Figure 1 A sixth arrangement schematic diagram of the second coil assembly of the driving device;

[0037] Figure 16 For Figure 1 The seventh schematic diagram of the second coil assembly of the driving device

[0038] Figure 17 For Figure 1 The eighth schematic diagram of the second coil assembly of the driving device

[0039] Figure 18 The structure schematic diagram of the camera module provided by the embodiment of the present application

[0040] Figure 19 For Figure 18 The exploded view of the camera module DETAILED DESCRIPTION

[0041] Referring to Figure 1 , Figure 2 , Figure 3 And Figure 4 The driving device provided by the embodiment of the present application comprises a flexible member 1, a carrier 2, a first coil assembly 3, a support member 4, a second coil assembly 5 and a driving magnet 6.

[0042] The flexible member 1 comprises a mounting part 1-1 and an elastic part 1-2 connected with each other.

[0043] The carrier 2 is connected with the mounting part 1-1, and the first coil assembly 3 is arranged on the carrier 2.

[0044] The support member 4 is connected with the carrier 2, and the support member 4 comprises a first support and at least two second coil assemblies 5 arranged on the circumferential surface of the first support. The first support is arranged in a frame type, which can be a square frame type or other polygonal frame type. The first support is internally provided with an opening and externally provided with a circumferential surface, and the circumferential surface comprises a plurality of sides and corner portions formed by the intersection of adjacent two sides. The second coil assemblies 5 are arranged on the circumferential surface of the first support.

[0045] The at least one driving magnet 6 is arranged opposite to the first coil assembly 3, and the driving magnet 6 is arranged around the circumferential surface of the first support and adjacent to the circumferential surface. That is, the driving magnet 6 is arranged around the circumferential surface of the first support and close to the circumferential surface. The driving magnet 6 is provided with two end portions 6-1 extending along the length of the square, and the end portions 6-1 correspond to the second coil assemblies 5, and the driving magnet 6 and the second coil assemblies 3 are both arranged around the circumferential surface of the first support.

[0046] The first coil assembly 3 generates magnetic force after being electrified to interact with the driving magnet 6 to drive the support 4 to move the carrier 2, and the carrier 2 drives the carrying part 1-1 to move in one of the vertical direction or the horizontal direction against the elastic force of the elastic part 1-2, and the second coil assembly 5 generates magnetic force after being electrified to interact with the driving magnet 6 to drive the support 4 to move the carrier 2, and the carrier 2 drives the carrying part 1-1 to move in the other of the vertical direction or the horizontal direction against the elastic force of the elastic part 1-2.

[0047] The second coil assembly 5 is arranged around an axis extending in the horizontal direction, and the axis is arranged on the peripheral surface of the first support. When the coil is electrified, the coil generates a magnetic field, and the magnetic field generated by the coil interacts with the magnetic field of the driving magnet 6 to cause relative movement between the coil and the driving magnet 6, and the coil drives the carrier 2 to move in the horizontal direction through the first support, so as to avoid the phenomenon of photographing blur caused by shaking of the camera assembly of the camera module during photographing.

[0048] The number of driving magnets 6 can be one or more, and the driving magnets 6 can be selected from any one of a magnet, a magnet or a magnetized body.

[0049] When focusing, the first coil assembly 3 is electrified, according to the right-hand screw rule, the right hand holds the electrified straight conductor, and the thumb points to the current direction in the straight conductor, so the four fingers point to the direction of the magnetic field around the electrified conductor. Like repels like, and unlike attracts, the first coil assembly 3 generates magnetic force after being electrified to interact with the driving magnet 6 to drive the support 4 to move the carrier 2, and the carrier 2 drives the carrying part 1-1 to move in the vertical direction against the elastic force of the elastic part 1-2, and the imaging chip 7 is installed on the carrier 2, and the carrier 2 supports the imaging chip 7, and the carrier 2 drives the imaging chip 7 to move freely in the vertical direction, so as to realize the change of the distance between the imaging chip 7 and the camera assembly of the camera module, meet the focusing requirement of the camera module, and ensure clear focusing. When the automatic focusing is completed, the first coil assembly 3 is de-energized, and the carrier 2 is reset under the action of the elastic force of the elastic part 1-2, and then the carrier 2 drives the imaging chip 7 to reset.

[0050] When the anti-shake is to be performed, the second coil assembly 5 is powered, according to the right-hand screw rule, the right hand holds the power supply straight conductor, the thumb points to the current direction in the straight conductor, then the four fingers point to the direction of the magnetic field around the power supply conductor, the same kind repels, the different kind attracts, the second coil assembly 5 generates a magnetic force after being powered, which interacts with the driving magnet 6 to drive the support 4 to move the carrier 2, the carrier 2 drives the imaging chip 7 to move in the horizontal direction to overcome the elastic force of the elastic part 1-2, the carrier 2 drives the imaging chip 7 to move freely in the horizontal direction to provide compensation in the horizontal direction, and the anti-shake is realized, when the anti-shake is completed, the second coil assembly 5 is powered off, under the action of the elastic force of the elastic part 1-2, the carrier 2 is reset, and then the carrier 2 drives the imaging chip 7 to reset.

[0051] When the focusing and the anti-shake are performed at the same time, the first coil assembly 3 and the second coil assembly 5 are powered at the same time, then the carrier 2 drives the carrying part 1-1 to move in the vertical direction and the horizontal direction to overcome the elastic force of the elastic part 1-2, the carrier 2 drives the imaging chip 7 to move freely in the vertical direction and the horizontal direction to realize the change of the distance between the imaging chip 7 and the camera assembly of the camera module, meet the focusing requirement of the camera module, and also can provide compensation in the horizontal direction to realize the anti-shake, and improve the shooting quality of the camera module.

[0052] The application drives the carrier 2 to drive the imaging chip 7 to move in the vertical direction to realize the auto-focusing, drives the carrier 2 to drive the imaging chip 7 to move in the horizontal direction to realize the anti-shake, the size and weight of the imaging chip 7 are small relative to the lens, and the size and weight of the first coil assembly 3, the second coil assembly 5 and the driving magnet 6 are small, miniaturization and light weight are realized, which is beneficial to reduce the overall size of the camera module to realize the miniaturization design of the camera module. Since the weight of the imaging chip 7 is small, the load of the first coil assembly 3, the second coil assembly 5 and the driving magnet 6 is light, the inertia of the action is small, the control is simple, and the precision and speed of the auto-focusing and the anti-shake are improved.

[0053] The first coil assembly 3 and the second coil assembly 5 of the application share one driving magnet 6, which further realizes miniaturization and light weight, and is beneficial to reduce the overall size of the camera module to realize the miniaturization design of the camera module.

[0054] Referring to Figure 10 , Figure 11 , Figure 13 and Figure 14In some embodiments, the first support is in a square shape, and the square shape has four sides and four corners. The second coil assembly 5 is arranged at the corner of the first support, and the driving magnet 6 is arranged at the side of the first support. In order to realize the horizontal movement of the carrier 2, the driving magnet 6 has two ends 6-1 extending along the length of the square, and the ends 6-1 correspond to the second coil assembly 5. When the second coil assembly 5 is energized, the second coil assembly 5 generates a magnetic field, which interacts with the magnetic field of the driving magnet 6, so that the relative movement between the second coil assembly 5 and the driving magnet 6 occurs, and the second coil assembly 5 drives the carrier 2 to move back and forth in the horizontal direction.

[0055] Specifically, referring to Figure 10 In the present embodiment, when the number of the driving magnet 6 is one and the number of the second coil assembly 5 is two, the two coil assemblies 5 correspond to the two ends of the one driving magnet 6, respectively, that is, one coil assembly 5 corresponds to one end of the driving magnet 6, so that the relative movement between the second coil assembly 5 and the driving magnet 6 occurs, and the support 4 and the carrier 2 move along the diagonal of the support 4 in the horizontal direction.

[0056] As shown in Figure 11 and Figure 12 Each driving magnet 6 corresponds to one second coil assembly 5, and the magnetic field generated by the end 6-1 interacts with the magnetic field generated by the second coil assembly 5, so that the relative movement between the second coil assembly 5 and the magnet 6 occurs. Specifically, referring to Figure 11 When the number of the driving magnet 6 is two and the number of the second coil assembly 5 is two, one of the two second coil assemblies 5 is arranged between the two driving magnets 6, that is, one second coil assembly 5 corresponds to the ends of the two driving magnets 6, and the other of the two second coil assemblies 5 corresponds to the other end of one of the two driving magnets 6. In another embodiment, when the number of the driving magnet 6 is three and the number of the second coil assembly 5 is two, the two coil assemblies 5 are arranged between two adjacent magnets 6. Referring to Figure 12 In the present embodiment, in order to ensure the stability of the movement of the support 4 in the horizontal direction, the number of the driving magnet 6 is four, and the number of the second coil assembly 5 is four. The four coil assemblies 5 are arranged between the four magnets 6, so that the second coil assembly 5 and the driving magnet 6 are arranged at intervals on the periphery of the support 4.

[0057] Referring to Figures 13 to 17In some embodiments, the support 4 is in a square shape, the second coil assembly 5 is arranged at the side of the first support, and the driving magnet 6 is arranged at the circumferential surface of the first support and adjacent to the second coil assembly 5. Specifically, in one embodiment, referring to Figure 13 , two second coil assemblies 5 are arranged at the middle of the two sides of the first support, and two driving magnets 6 are arranged at the corresponding sides of the first support and adjacent to the second coil assemblies 5. Figure 14 Figure 15 , four second coil assemblies 5 are arranged at the middle of the four sides of the first support, and one driving magnet 6 is arranged at one side of each second coil assembly 5 or two driving magnets 6 are arranged at both sides of each second coil assembly 5. Figure 16 , two second coil assemblies 5 are arranged at the two sides of the first support, and one driving magnet 6 is arranged between the two second coil assemblies 5 in a bent shape, and the two ends of the driving magnet 6 are adjacent to the two second coil assemblies 5. That is, the first support has four sides, and when the number of the second coil assemblies 5 is two, one driving magnet 6 is arranged on each two adjacent sides of the first support. Figure 17 , four second coil assemblies 5 are arranged at the four sides of the first support, and four driving magnets 6 are arranged between the two second coil assemblies 5 in a bent shape, and the two ends of the driving magnet 6 are adjacent to the two second coil assemblies 5.

[0058] In the embodiment described in Figures 13-17 , when one of the two second coil assemblies 5 is energized, the magnetic field generated by the second coil assembly 5 interacts with the magnetic field of the driving magnet 6, so that the second coil assembly 5 can drive the support 4 to move in the first direction in the horizontal direction. When the other of the two second coil assemblies 5 is energized, the magnetic field generated by the second coil assembly 5 interacts with the magnetic field of the driving magnet 6, so that the second coil assembly 5 can drive the support 4 to move in the second direction in the horizontal direction. The first direction is perpendicular to the second direction. Of course, the two second coil assemblies 5 can be energized at the same time, so that the two second coil assemblies 5 can drive the support 4 to move in the first direction and the second direction in the horizontal direction.

[0059] In some embodiments, the flexible member 1 includes a flexible spring plate. The use of the flexible spring plate can realize functional integration, which is conducive to reducing the arrangement of other components and thus reducing the volume of the entire camera module. In addition, the multifunctionality of the flexible spring plate is conducive to reducing related components and thus reducing costs.

[0060] Referring to​Figure 8 In this embodiment, the flexible spring plate has a hollowed-out portion. A carrying portion 1-1 is provided in the middle of the hollowed-out portion of the flexible spring plate. Carrying portion 1-1 is used to support imaging chip 7. A frame portion 1-3 is provided at the edge of the hollowed-out portion of the flexible spring plate to securely connect to housing 8 and support elastic portion 1-2 and carrying portion 1-1. Elastic portion 1-2 is provided within the hollowed-out portion of the flexible spring plate. Elastic portion 1-2 is composed of multiple spring wires and generates sufficient elastic force to reset support member 4 after autofocus and image stabilization are complete.

[0061] See also Figure 8 In this embodiment, the elastic portion of the elastic part 1-2 includes a first contact portion 1-21 and a first bending portion 1-22. The first bending portion 1-22 is an L-shaped plate structure. The two ends of the first bending portion 1-22 are respectively connected to the two first contact portions 1-21, and the two first contact portions 1-21 are respectively connected to the carrying portion 1-1 and the frame portion 1-3, so that the entire flexible spring plate is electrically conductive. Along the circumference of the carrying portion 1-1, one or more first bending portions 1-22 can be set between the carrying portion 1-1 and the frame portion 1-3. In this embodiment, four evenly distributed first bending portions 1-22 are designed along the circumference of the carrying portion 1-1. Multiple groups of wiring can be arranged on each group of first contact portions 1-21 and first bending portions 1-22, and the width of the first contact portions 1-21 and the first bending portions 1-22 can also be set according to the needs of the wiring. Among them, the widths of the first contact portions 1-21 and the first bending portions 1-22 can be the same or different. Of course, the shape of the first bending portion 1-22 is not limited to the L-shape. The first bending portion 1-22 can also be designed as a bow-shaped, arc-shaped or wave-shaped structure.

[0062] See also Figure 8 In this embodiment, due to the connection between the carrying portion 1-1 and the frame portion 1-3 through the first contact portion 1-21 and the first bending portion 1-22, the carrying portion 1-1 can elastically move in the vertical direction and / or horizontal direction relative to the frame portion 1-3, thereby enabling the imaging chip 7 to move or reset in the vertical direction and / or horizontal direction of the camera assembly 9. That is, the elastic portion 1-2 not only plays a role in elastic movement of the imaging chip 7, but also plays a role in conducting electricity and transmitting signals between the carrying portion 1-1 and the frame portion 1-3. Optionally, the carrying portion 1-1, the first contact portion 1-21, the first bending portion 1-22 and the frame portion 1-3 can be integrally formed by etching to reduce the difficulty of producing and manufacturing components.

[0063] See also Figure 9In the embodiment, the flexible piece 1 comprises a support layer 1-4, an insulation layer 1-5 and a circuit layer 1-6. In the embodiment, the support layer 1-4 is a metal layer or an alloy layer, which has good ductility and elasticity, and the material of the support layer 1-4 can be pure copper, titanium copper, beryllium copper or stainless steel.

[0064] The insulation layer 1-5 is arranged on the support layer 1-4. In the embodiment, the material of the insulation layer 1-5 can be rubber or silicone.

[0065] The insulation layer 1-5 is arranged on the support layer 1-4. In the embodiment, the material of the insulation layer 1-5 can be rubber or silicone.

[0066] Referring to Figure 7 In some embodiments, the first coil assembly 3 is a coil body 3-1 etched or adhered to the board of the carrier 2. When the coil body 3-1 is powered, the coil body 3-1 generates a magnetic thrust under the action of the magnetic field of the driving magnet 6 to drive the carrier 2 to move in the vertical direction, thereby driving the imaging chip 7 on the carrier 2 to move in the vertical direction. Of course, in other embodiments, the first coil assembly 3 can also include a second support and a coil body 3-1 wound on the second support. However, if the second support is used, the height of the carrier 2 in the vertical direction will be increased, and therefore, preferably, the first coil assembly 3 is a coil body 3-1 etched on the board of the carrier 2.

[0067] In the embodiment, in order to make the magnetic field generated by the first coil assembly 3 interact with the magnetic field of the driving magnet 6 to drive the carrier 2 to move, the first coil assembly 3 is formed by one coil body 3-1, which is formed into a whole ring surrounding the imaging chip 7, and the first coil assembly 3 is located below the driving magnet 6 to ensure that the magnetic field generated by the first coil assembly 3 can fully act on the magnetic field of the driving magnet 6. Of course, in other embodiments, the number of coil bodies 3-1 can also be multiple, and there is a gap between each adjacent two coil bodies 3-1, and the position of the gap corresponds to the position of the accommodating groove 6-1 on the driving magnet 6. If the number of coil bodies 3-1 is multiple, each coil body 3-1 needs a power supply, which leads to high cost, and therefore, preferably, the number of coil bodies 3-1 is one.

[0068] In the embodiment, the first coil assembly 3 is annular, the imaging chip 7 is sheet-shaped, and the coil body 3-1 is etched or pasted on the surface of the carrier 2. Meanwhile, the imaging chip 7 can be arranged in the first coil assembly 3, so that the structure design and position arrangement of the imaging chip 7 and the first coil assembly 3 are reasonable, and the imaging chip 7 and the first coil assembly 3 can be simultaneously carried on the carrier 2, thereby making the structure of the camera module more compact and facilitating reduction of the shoulder height dimension and volume of the camera module.

[0069] In the embodiment, the coil body 3-1 is integrated on the surface of the carrier 2 by etching or pasting, and the coil does not need to be independently arranged on the carrier 2, thereby reducing the height of the carrier and enabling the driving magnet 6 and the second coil 5 to be arranged on the peripheral surface of the support 4 to form a surrounding ring layer, thereby reducing the size of the camera module in the horizontal direction, compared with the prior art in which the coil and the driving magnet are generally arranged in the horizontal direction to form two surrounding ring layers, thereby increasing the size of the camera module in the horizontal direction.

[0070] Based on the same inventive concept, the application further provides a camera module which adopts the driving device. The specific structure of the driving device is referred to the above embodiments. Since all the technical solutions of the above embodiments are adopted, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and details are not repeated here.

[0071] Referring to Figure 18 and Figure 19 In some embodiments, the camera module comprises a driving device, a filter 11, a camera assembly 9, and an imaging chip 7. The filter 11 is arranged in the support 4 of the driving device and opposite to the camera assembly 9, and the imaging chip 7 is carried on the carrier 2 of the driving device. In the embodiment, the electrical terminals of the imaging chip 7 pass through the carrier 2 and are connected with the circuit layer 1-6 of the flexible member 1 to realize signal transmission. The driving device drives the imaging chip 7 to move in the horizontal direction and / or the vertical direction. The imaging chip 7 can receive the image signal projected by the camera assembly 9.

[0072] Referring to Figure 1 and Figure 2 In some embodiments, the camera module further comprises a box 8 accommodating the flexible member 1, the carrier 2, the support 4, and the driving magnet 6, and the box 8 shields external signal interference.

[0073] Referring to Figure 3 In the embodiment, the box 8 comprises a cover 8-1 and a base 8-2 connected with the cover 8-1. The driving magnet 6 is fixedly connected with the inner wall of the cover 8-1 to fix the driving magnet 6 by the cover 8-1.

[0074] Referring toFigure 2 In some embodiments, the camera module further comprises a spring assembly 10 disposed in the box 8 and connected with the carrier 2.

[0075] The spring assembly 10 comprises a spring 10-1 and a gasket 10-2.

[0076] The inner ring of the spring 10-1 is connected with the support 4, the outer ring of the spring 10-1 is connected with the box 8, and the inner ring of the spring 10-1 and the outer ring of the spring 10-1 are connected through the elastic member 10-3. After the elastic action of the support 4 in the vertical and / or horizontal direction is completed, the elastic force of the elastic member 10-3 ensures the reset of the support 4 and the stability of the action of the support 4. In this embodiment, the number of elastic members 10-3 is multiple, preferably four. The four elastic members 10-3 are evenly spaced at equal angles between the inner ring of the spring 10-1 and the outer ring of the spring 10-1, ensuring that the force applied to the support 4 is balanced.

[0077] The gasket 10-2 is disposed in the box 8 and between the spring 10-1 and the drive magnet 6. The gasket 10-2 is annular. When the support 4 moves in the vertical direction, the support 4 can pass through the gasket 10-2. Since the gasket 10-2 has a certain thickness, the distance between the spring 10-1 and the drive magnet 6 is increased, ensuring that the support 4 has sufficient travel in the vertical direction.

[0078] Referring to Figure 18 In this embodiment, the camera assembly 9 passes through the top opening of the box 8 and the opening at the top of the support 4 in sequence. The image obtained by the camera assembly 9 passes through the filter 11 and is finally imaged on the imaging chip 7.

[0079] Referring to Figure 18 and Figure 19 In this embodiment, the camera module further comprises a flexible circuit board 12, which is electrically connected with the circuit layer 1-6 of the flexible member 1 to realize signal transmission. The camera assembly 9 obtains an image signal, which is projected on the imaging chip 7 and converted into an electrical signal. The electrical signal is sent to the flexible circuit board 12 through the circuit layer 1-6 and then to the processor through the flexible circuit board 12.

[0080] Referring to Figure 19 In some embodiments, the camera assembly comprises a fixing member 9-1 and an optical lens 9-2.

[0081] The fixing member 9-1 is disposed outside the box 8 of the drive device and is supported by the box 8.

[0082] The optical lens 9-2 is disposed in the fixing member 9-1 and is supported by the fixing member 9-2.

[0083] In the embodiment, the fixing member 9-1 is provided with a motor for driving the optical lens 9-2 to move, and the motor can be an AF (Auto focus) motor to realize automatic focusing of the optical lens 9-1. The first coil assembly 3 and the AF motor can realize time-division multiplexing effect, that is, even if one of the first coil assembly 3 and the AF motor is damaged, the other one can still work. Moreover, the simultaneous application of the first coil assembly 3, the driving magnet 6 and the AF motor can realize a larger moving distance, assuming that the displacement distance of the AF motor in the vertical direction is a1, and the displacement distance of the imaging chip 7 is a2, then the application can realize relay focusing, and realize a larger a1+a2=a3 focusing distance.

[0084] Meanwhile, the simultaneous application of the first coil assembly 3, the driving magnet 6 and the AF motor can realize a faster focusing speed, assuming that the displacement speed of the AF motor in the vertical direction is v1, and the displacement speed of the imaging chip 7 is v2, then the application can fit the moving speed of the first coil assembly 3 and the AF motor to obtain v1+v2=v3, realize simultaneous focusing, and also realize a faster focusing speed v3.

[0085] In another embodiment, the motor can also be an optical anti-shake motor to realize anti-shake of the optical lens 9-1. The simultaneous application of the second coil assembly 5, the driving magnet 6 and the optical anti-shake motor can realize multi-axis anti-shake of the optical lens 9-2. That is, when the optical lens 9-2 shakes, according to external shaking information, the optical anti-shake motor drives the optical lens 9-2 to move in the opposite direction of the shaking to compensate, that is, the optical anti-shake motor can realize rotation movement of the optical lens 9-2 around the X axis and the Y axis to prevent light deviation. At this time, the second coil assembly 5 also drives the imaging chip 7 to move in the opposite direction of the shaking according to the external shaking information to compensate, that is, the second coil assembly 5 can drive the imaging chip 7 to move in the X axis and the Y axis and rotate around the Z axis to realize five-axis anti-shake, and also realize a larger anti-shake angle and a faster anti-shake speed.

[0086] In the embodiment, the second coil assembly 5, the driving magnet 6 and the optical anti-shake motor can realize time-division multiplexing effect, that is, even if one of the second coil assembly 5 and the optical anti-shake motor is damaged, the other one can still work.

[0087] The application also provides a terminal device comprising the camera module in the above-mentioned embodiments. The terminal device includes but is not limited to mobile phones, tablets, notebook computers and other devices, and the terminal device only needs to open a small size opening to install the camera module of the application.

[0088] Finally, it should be noted that the above detailed description is merely illustrative of the technical solutions of the present application and is not limiting, and although the present application has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A driving device, characterized in that: include: The flexible member comprises a carrying portion and an elastic portion connected to each other; a carrier connected to the carrying portion, wherein the carrier is provided with a first coil assembly; A support member connected to the carrier, the support member comprising a first bracket and at least two second coil assemblies arranged on a circumferential surface of the first bracket; at least one driving magnet disposed opposite to the first coil assembly, wherein the driving magnet and the second coil assembly are disposed around and adjacent to a circumferential surface of the first bracket; The driving magnet is provided with two ends extending in a square shape along the length, the two ends respectively corresponding to the second coil assembly, or one end corresponding to the second coil assembly; Among them, after the first coil component is energized, it generates a magnetic force to interact with the driving magnet to drive the support member to drive the carrier to move, and the carrier drives the carrying part to overcome the elastic force of the elastic part and move in one of the vertical directions or the horizontal directions. After the second coil component is energized, it generates a magnetic force to interact with the driving magnet to drive the support member to drive the carrier to move, and the carrier drives the carrying part to overcome the elastic force of the elastic part and move in the other of the vertical directions or the horizontal directions.

2. The driving device according to claim 1, characterized in that The first bracket is arranged in a frame shape, and the frame includes a plurality of side edges and a corner formed by the intersection of adjacent two side edges. The second coil assembly is arranged at the corner position of the first bracket, and the driving magnet is arranged at the side position of the first bracket.

3. The driving device according to claim 1, characterized in that The first bracket is arranged in a frame shape, and the frame includes a plurality of side edges and a corner formed by the intersection of adjacent two side edges. The second coil assembly is arranged at a side position of the first bracket, and the driving magnet is arranged at a side position of the first bracket.

4. The driving device according to claim 1, characterized in that The first bracket is arranged in a frame shape, and the frame includes multiple side edges and corners formed by the intersection of adjacent two side edges. The second coil assembly is arranged at the corner position of the first bracket, and the driving magnet is arranged at the side edge and corner position of the first bracket.

5. The driving device according to claim 1, characterized in that The first coil component is a coil body etched on the carrier plate.

6. The driving device according to claim 1, characterized in that The flexible part includes a flexible spring plate, which has a hollowed-out portion. The carrying portion is arranged in the middle of the hollowed-out flexible spring plate, a frame portion is arranged at the edge of the hollowed-out flexible spring plate, and the elastic portion is arranged in the hollowed-out portion of the flexible spring plate.

7. The driving device according to claim 1, characterized in that The flexible member comprises: Support layer; an insulating layer, disposed on the supporting layer; a circuit layer, provided on the upper surface of the insulating layer; Wherein, a wire groove is provided on the insulating layer, and the wire groove is electroplated to form a circuit layer.

8. A camera module, characterized in that: It comprises a filter, a camera assembly, an imaging chip and a driving device as described in any one of claims 1 to 7, wherein the filter is arranged in a support member of the driving device and is opposite to the camera assembly, the imaging chip is mounted on a carrier of the driving device, and the driving device drives the imaging chip to move along the vertical direction and / or horizontal direction.

9. The camera module according to claim 8, wherein: The camera module further includes a box that accommodates the flexible member, the carrier, the support member and the driving magnet; The camera module further includes a spring assembly disposed in the box and connected to the carrier; The spring assembly includes: a spring and a gasket; The inner ring of the spring piece is connected to the support member, the outer ring of the spring piece is connected to the box body, and the inner ring of the spring piece and the outer ring of the spring piece are connected by an elastic member; The gasket is arranged in the box body, and the gasket is arranged between the elastic sheet and the driving magnet.

10. The camera module according to claim 9, wherein: The camera assembly includes: A fixing member is arranged outside the box of the driving device; The optical lens is arranged in the fixing member.

11. The camera module according to claim 10, wherein: A motor for driving the optical lens is arranged in the fixing member.

Images