CN116193224B - Driving device and camera module - Google Patents
Driving device and camera moduleInfo
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- CN116193224B CN116193224B CN202211601301.0A CN202211601301A CN116193224B CN 116193224 B CN116193224 B CN 116193224B CN 202211601301 A CN202211601301 A CN 202211601301A CN 116193224 B CN116193224 B CN 116193224B
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Abstract
本发明公开了一种驱动装置及摄像模组，属于摄像模组技术领域。所述驱动装置包括：柔性件，包括相连接的搭载部和弹性部；载体，与所述搭载部连接，所述载体上设有第一线圈组件；支撑件，与所述载体连接，包括第一支架和设置在第一支架周面上的至少两个第二线圈组件；至少一个驱动磁体，与所述第一线圈组件相对设置，所述驱动磁体与所述第二线圈组件围绕所述第一支架的周面设置且与周面相邻。本申请驱动装置及摄像模组有利于减小摄像模组的整体尺寸，以实现摄像模组的小型化设计。
The present invention discloses a driving device and a camera module, belonging to the technical field of camera modules. The driving device includes: a flexible member, including a carrying portion and an elastic portion connected to each other; a carrier, connected to the carrying portion, on which a first coil assembly is provided; a supporting member, connected to the carrier, including a first bracket and at least two second coil assemblies arranged on the circumference of the first bracket; at least one driving magnet, arranged opposite to the first coil assembly, the driving magnet and the second coil assembly are arranged around the circumference of the first bracket and adjacent to the circumference. The driving device and camera module of the present application are conducive to reducing the overall size of the camera module to achieve a miniaturized design of the camera module.
Description
Technical Field
The present invention relates to the field of camera modules, and in particular, to a driving device and a camera module.
Background
Along with the development of technology, the camera module is miniaturized more and more, and meanwhile, the camera module has portability because the camera module can be arranged on portable devices such as mobile phones, personal digital assistants, notebooks and the like. However, when shooting is performed, the portable device is very easy to shake, so that the image shot by the shooting module is blurred.
In order to make the image shot by the camera module clear, in the prior art, the lens is driven by the driving motor to move to realize automatic focusing and optical anti-shake, but as the definition requirement of a user on the image is gradually increased, the size and weight of the lens of the camera module are increased, the requirement on the bearing and driving force of the driving motor is increased, the external dimension of the driving motor is increased, and the overall dimension of the camera module is increased, so that the miniaturization design of the camera module is not facilitated.
Disclosure of Invention
The invention provides a driving device and a camera module, which solve or partially solve the technical problems that the camera module in the prior art is large in size and is not beneficial to the miniaturization design of the camera module.
The invention provides a driving device which comprises a flexible piece, a carrier, a supporting piece, at least one driving magnet and a carrier, wherein the flexible piece comprises a carrying part and an elastic part which are connected, the carrying part is connected with the carrier, a first coil assembly is arranged on the carrier, the supporting piece is connected with the carrier, the supporting piece comprises a first bracket and at least two second coil assemblies arranged on the peripheral surface of the first bracket, the driving magnet is arranged opposite to the first coil assembly, the driving magnet and the second coil assemblies are arranged around the peripheral surface of the first bracket and are adjacent to the peripheral surface, magnetic force generated by energizing the first coil assemblies interacts with the driving magnet to drive the supporting piece to drive the carrier to move, the carrying part overcomes the elastic force of the elastic part to move in one direction of the vertical direction or the horizontal direction, the magnetic force generated by energizing the second coil assemblies interacts with the driving magnet to drive the supporting piece to drive the carrier to move, and the carrier drives the carrying part to overcome the elastic force of the elastic part to move in the other direction of the vertical direction or the other direction.
Further, the driving magnet is provided with two end portions extending along a length square, and the end portions correspond to the second coil assembly.
Further, two of the end portions correspond to the second coil block, respectively, or one of the end portions corresponds to the second coil block.
Further, the first support is in a frame-shaped arrangement, the frame comprises a plurality of side edges and adjacent two side edges which are intersected to form corners, the second coil assembly is arranged at the corners of the first support, and the driving magnet is arranged at the side edges of the first support.
Further, the first support is in a frame-shaped arrangement, the frame comprises a plurality of side edges and adjacent side edges which are intersected to form a corner, the second coil assembly is arranged at the side edge position of the first support, and the driving magnet is arranged at the side edge position of the first support.
Further, the first coil assembly is a coil body etched in the carrier plate surface.
Further, the flexible piece includes flexible spring board, the fretwork position has been seted up to flexible spring board, the middle part sets up behind the flexible spring board fretwork the portion of carrying on, flexible spring board fretwork trailing edge position sets up frame portion, set up in the position of flexible spring board fretwork the elastic component.
The flexible piece further comprises a supporting layer, an insulating layer and a circuit layer, wherein the insulating layer is arranged on the supporting layer, the circuit layer is arranged on the upper surface of the supporting layer, which is away from the insulating layer, a wire slot is formed in the insulating layer, and the circuit layer is formed in the wire slot in an electroplating mode.
Based on the same inventive concept, the application also provides a camera module, which comprises an optical filter, a camera component, an imaging chip and the driving device, wherein the optical filter is arranged in a support piece of the driving device and is opposite to the camera component, the imaging chip is carried on a carrier of the driving device, and the driving device drives the imaging chip to move along one direction of the vertical direction and/or the horizontal direction.
The camera shooting module further comprises a box body for accommodating the flexible piece, the carrier, the supporting piece and the driving magnet, the camera shooting module further comprises a spring piece assembly which is arranged in the box body and connected with the carrier, the spring piece assembly comprises a spring piece and a gasket, an inner ring of the spring piece is connected with the supporting piece, an outer ring of the spring piece is connected with the box body, an inner ring of the spring piece is connected with an outer ring of the spring piece through an elastic piece, the gasket is arranged in the box body, and the gasket is arranged between the spring piece and the driving magnet.
Further, the camera component comprises a fixing piece and an optical lens, wherein the fixing piece is arranged outside the box body of the driving device, and the optical lens is arranged in the fixing piece.
Further, a motor for driving the optical lens to act is arranged in the fixing piece.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
When focusing, the first coil component is electrified, the electrified straight wire is held by the right hand according to the right hand spiral rule, the thumb points to the current direction in the straight wire, then the four fingers point to the direction of the magnetic field around the electrified wire, the two poles repel each other and attract each other, after the first coil component is electrified, magnetic force and a driving magnet interact to drive a supporting piece to drive a carrier to move, the carrier drives a carrying part to overcome the elastic force of an elastic part to move along the vertical direction, an imaging chip is mounted on the carrier, the imaging chip is supported by the carrier, the carrier drives the imaging chip to freely move in the vertical direction, so that the change of the distance between the imaging chip and the camera component of a camera module is realized, the focusing requirement of the camera module is met, focusing clarity is ensured, when automatic focusing is finished, the first coil component is powered off, the carrier is driven to reset under the action of the elastic force of the elastic part, and the carrier drives the imaging chip to reset.
When the anti-shake is needed, the second coil assembly is electrified, the electrified straight wire is held by the right hand according to the right hand spiral rule, the thumb points to the current direction in the straight wire, then the four fingers point to the direction of the magnetic field around the electrified wire, the like poles repel each other and attract each other, after the second coil assembly is electrified, magnetic force and a driving magnet are generated to interact to drive the support piece to drive the carrier to move, the carrier drives the carrying part to overcome the horizontal movement of the elastic force of the elastic part, the carrier drives the imaging chip to freely move in the horizontal direction, compensation is provided in the horizontal direction, the anti-shake is realized, when the anti-shake is finished, the second coil assembly is powered off, the carrier is driven to reset under the action of the elastic force of the elastic part, and then the carrier drives the imaging chip to reset.
The imaging chip is driven by the driving carrier to move along the vertical direction so as to realize automatic focusing, the imaging chip is driven by the driving carrier to move along the horizontal direction so as to realize anti-shake, and the imaging chip is small in size and weight relative to the lens, and the first coil assembly, the second coil assembly and the driving magnet are small in size and weight, so that miniaturization and light weight are realized, the overall size of the camera module is reduced, and the miniaturization design of the camera module is realized. Meanwhile, because the imaging chip is small in weight, the first coil assembly, the second coil assembly and the driving magnet are light in load, so that the inertia of the action of the imaging chip is small, the control is simple, and the precision and the speed of automatic focusing and anti-shake are improved.
The first coil component and the second coil component share the same driving magnet, so that miniaturization and light weight are further realized, the overall size of the camera module is reduced, and the miniaturization design of the camera module is realized.
Drawings
Fig. 1 is a schematic structural diagram of a driving device according to an embodiment of the present invention;
FIG. 2 is an exploded view of the drive assembly of FIG. 1;
FIG. 3 is an assembled schematic view of the driving device of FIG. 1;
FIG. 4 is a schematic view of the engagement of the support and carrier of the drive device of FIG. 1;
FIG. 5 is an exploded view of FIG. 4;
FIG. 6 is a cross-sectional view taken along A-A of FIG. 4;
FIG. 7 is a schematic view of the carrier of the driving device of FIG. 1;
FIG. 8 is a schematic view of the flexible member of the driving device of FIG. 1;
FIG. 9 is a schematic view of the composition of the flexure of FIG. 1;
FIG. 10 is a first schematic layout of a second coil assembly of the drive apparatus of FIG. 1;
FIG. 11 is a second schematic layout of a second coil assembly of the drive apparatus of FIG. 1;
FIG. 12 is a third layout schematic of a second coil assembly of the drive apparatus of FIG. 1;
FIG. 13 is a fourth schematic layout of a second coil assembly of the drive apparatus of FIG. 1;
FIG. 14 is a fifth schematic layout of a second coil assembly of the drive apparatus of FIG. 1;
FIG. 15 is a sixth arrangement schematic of a second coil assembly of the drive apparatus of FIG. 1;
FIG. 16 is a seventh arrangement schematic of a second coil assembly of the drive apparatus of FIG. 1;
FIG. 17 is a schematic view of an eighth arrangement of a second coil assembly of the drive apparatus of FIG. 1
Fig. 18 is a schematic structural diagram of an image capturing module according to an embodiment of the present invention;
fig. 19 is an exploded view of the camera module of fig. 18.
Detailed Description
Referring to fig. 1,2, 3 and 4, a driving device according to an embodiment of the present invention includes a flexible member 1, a carrier 2, a first coil assembly 3, a support 4, a second coil assembly 5 and a driving magnet 6.
The flexible member 1 includes a mounting portion 1-1 and an elastic portion 1-2 connected to each other.
The carrier 2 is connected to the mounting portion 1-1, and the first coil assembly 3 is provided on the carrier 2.
The support 4 is connected to the carrier 2, the support 4 comprising a first bracket and at least two second coil assemblies 5 provided on the circumference of the first bracket. The first support is the frame type setting, and the frame type can be square frame type or other polygon frame types, and the inside of first support is equipped with the opening, and first support outside is equipped with the global, and the global bight that forms including forming a plurality of sides and adjacent two sides intersection. The second coil block 5 is provided on the peripheral surface of the first bracket.
At least one drive magnet 6 is arranged opposite the first coil assembly 3, the drive magnet 6 being arranged around and adjacent to the circumference of the first support with the second coil assembly 5. That is, the driving magnet 6 is disposed around and close to the peripheral surface of the first bracket. The driving magnet 6 is provided with two end parts 6-1 extending along the length square, the end parts 6-1 correspond to the second coil assemblies 5, and the driving magnet 6 and the second coil assemblies 3 are all arranged on the peripheral surface of the first bracket in a surrounding mode.
Wherein, the first coil assembly 3 generates magnetic force to interact with the driving magnet 6 to drive the support member 4 to drive the carrier 2 to move, the carrier 2 drives the carrying part 1-1 to overcome the elastic force of the elastic part 1-2 to move along one direction of the vertical direction or the horizontal direction, and the second coil assembly 5 generates magnetic force to interact with the driving magnet 6 to drive the support member 4 to drive the carrier 2 to move, the carrier 2 drives the carrying part 1-1 to overcome the elastic force of the elastic part 1-2 to move along the other direction of the vertical direction or the horizontal direction.
The second coil block 5 is wound around a shaft extending in the horizontal direction, the shaft being provided on the peripheral surface of the first bracket. When the coil is electrified, the coil can generate a magnetic field, the magnetic field generated by the coil interacts with the magnetic field of the driving magnet 6 to enable the coil and the driving magnet 6 to move relatively, and the coil drives the carrier 2 to act in the horizontal direction through the first bracket so as to avoid the phenomenon of shooting ambiguity caused by shaking when the camera component of the camera module shoots.
The number of the driving magnets 6 can be one or more, and the driving magnets 6 can be magnets or any one of magnets or charging magnets.
When focusing is needed, the first coil assembly 3 is electrified, the electrified straight wire is held by the right hand according to the right hand spiral rule, the thumb points to the current direction in the straight wire, then the four fingers point to the direction of the magnetic field around the electrified wire, the two poles repel each other and attract each other, the first coil assembly 3 generates magnetic force after being electrified and interacts with the driving magnet 6 to drive the support piece 4 to drive the carrier 2 to move, the carrier 2 drives the carrying part 1-1 to overcome the elastic force of the elastic part 1-2 to move along the vertical direction, the imaging chip 7 is mounted on the carrier 2, the imaging chip 7 is supported by the carrier 2, the carrier 2 drives the imaging chip 7 to freely move in the vertical direction, so that the distance between the imaging chip 7 and the camera head assembly of the camera module is changed, the focusing requirement of the camera module is met, the focusing is ensured to be clear, when the automatic focusing is finished, the first coil assembly 3 is powered off, the carrier 2 is driven to reset under the elastic force of the elastic part 1-2, and the carrier 2 is driven to reset.
When the anti-shake is to be carried out, the second coil assembly 5 is electrified, the electrified straight wire is held by a right hand according to the right hand spiral rule, so that the thumb points to the current direction in the straight wire, then the four fingers point to the direction of the magnetic field around the electrified wire, the two fingers repel each other and attract each other, after the second coil assembly 5 is electrified, magnetic force is generated to interact with the driving magnet 6 to drive the support piece 4 to drive the carrier 2 to move, the carrier 2 drives the carrying part 1-1 to overcome the elastic force of the elastic part 1-2 to move along the horizontal direction, the carrier 2 drives the imaging chip 7 to move freely in the horizontal direction, compensation is provided in the horizontal direction, and the anti-shake is realized.
When focusing and anti-shake are carried out simultaneously, the first coil assembly 3 and the second coil assembly 5 are electrified simultaneously, then the carrier 2 drives the carrying part 1-1 to overcome the elastic force of the elastic part 1-2 to move in the vertical direction and the horizontal direction, the carrier 2 drives the imaging chip 7 to move freely in the vertical direction and the horizontal direction, so that the change of the distance between the imaging chip 7 and the camera assembly of the camera module is realized, the focusing requirement of the camera module is met, compensation can be provided in the horizontal direction, the anti-shake is realized, and the shooting quality of the camera module is improved.
According to the application, the imaging chip 7 is driven to move in the vertical direction by the driving carrier 2 so as to realize automatic focusing, the imaging chip 7 is driven to move in the horizontal direction by the driving carrier 2 so as to realize anti-shake, and the imaging chip 7 is small in size and weight relative to the lens, and the adopted first coil assembly 3, second coil assembly 5 and driving magnet 6 are small in size and weight, so that miniaturization and light weight are realized, the overall size of the camera module is reduced, and the miniaturization design of the camera module is realized. Meanwhile, because the imaging chip 7 is small in weight, the first coil assembly 3, the second coil assembly 5 and the driving magnet 6 are light in load, so that the inertia for realizing the actions of the imaging chip is small, the control is simple, and the precision and the speed of automatic focusing and anti-shake are improved.
The first coil assembly 3 and the second coil assembly 5 share the driving magnet 6, so that miniaturization and light weight are further realized, the overall size of the camera module is reduced, and the miniaturization design of the camera module is realized.
Referring to fig. 10, 11, 13 and 14, in some embodiments, the first bracket is provided in a box-type configuration, the peripheral surface of the box-type configuration including four sides and four corners. The second coil block 5 is provided at a corner position of the first bracket, and the driving magnet 6 is provided at a side position of the first bracket. In order to realize the movement of the carrier 2 in the horizontal direction, the driving magnet 6 is provided with two end parts 6-1 extending along the length square, the end parts 6-1 correspond to the second coil assembly 5, when the second coil assembly 5 is electrified, the second coil assembly 5 generates a magnetic field which interacts with the magnetic field of the driving magnet 6 to enable the second coil assembly 5 and the driving magnet 6 to move relatively, and the second coil assembly 5 drives the carrier 2 to move back and forth in the horizontal direction.
Specifically, referring to fig. 10, in the present embodiment, when the number of the driving magnets 6 is one and the number of the second coil assemblies 5 is two, the two coil assemblies 5 correspond to the two ends of one driving magnet 6, respectively, that is, one coil assembly 5 corresponds to one end of the driving magnet 6, thereby effecting the back and forth relative movement between the second coil assembly 5 and the driving magnet 6, thereby effecting the diagonal movement of the support 4 and the carrier 2 in the horizontal direction along the support 4.
As shown in fig. 11 and 12, each driving magnet 6 corresponds to one second coil assembly 5, and the magnetic field generated by the end portion 6-1 interacts with the magnetic field generated by the second coil assembly 5 to enable the second coil assembly 5 and the magnet 6 to move relatively. Specifically, referring to fig. 11, when the number of the driving magnets 6 is two and the number of the second coil assemblies 5 is two, one of the two second coil assemblies 5 is provided between the two driving magnets 6, that is, one second coil assembly 5 corresponds to an end portion of the two driving magnets 6 and the other second coil assembly of the two second coil assemblies 5 corresponds to the other end portion of one driving magnet 6 of the two driving magnets 6. In another embodiment, when the number of the driving magnets 6 is three and the number of the second coil assemblies 5 is two, the two coil assemblies 5 are respectively disposed between two adjacent magnets 6. Referring to fig. 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 magnets 6 is four, the number of the second coil assemblies 5 is four, and the four coil assemblies 5 are respectively disposed between the four magnets 6, so that the second coil assemblies 5 and the driving magnets 6 are disposed at intervals on the peripheral surface of the support 4.
Referring to fig. 13 to 17, in some embodiments, the support 4 is provided in a square frame shape, the second coil block 5 is provided at a side position of the first bracket, and the driving magnet 6 is provided at an optimal middle position of the side, and the peripheral surface position of the first bracket is adjacent to the second coil block 5. Specifically, in one embodiment, referring to fig. 13, two second coil assemblies 5 are provided, and are respectively disposed at intermediate positions of two sides of the first bracket, two driving magnets 6 are respectively disposed at corresponding sides of the first bracket and adjacent to the second coil assemblies 5, corresponding to the second coil assemblies 5. In another embodiment, see fig. 14 and 15, the second coil assembly 5 is provided with four, respectively arranged in the middle of the four sides of the first support, each side being provided with one driving magnet 6 on one side of the second coil 5 or two driving magnets 6 on both sides of the second coil 5. In another embodiment, referring to fig. 16, two second coil assemblies 5 are provided and are respectively disposed at two side edges of the first bracket, one driving magnet 6 is provided and is bent between the two second coil assemblies 5, and two ends of the driving magnet 6 are respectively adjacent to the two second coil assemblies 5, that is, the first bracket has four sides, and when the number of the second coil assemblies 5 is two, one driving magnet 6 is respectively disposed on each two adjacent sides of the first bracket. In another embodiment, referring to fig. 17, the second coil assemblies 5 are four, and are respectively disposed at four side positions of the first bracket, the driving magnet 6 is four, and is respectively disposed between the two second coil assemblies 5 in a bent shape, and two ends of the driving magnet 6 are respectively adjacent to the two second coil assemblies 5.
In the present embodiment shown in fig. 13-17, when one of the two second coil units 5 is energized, the magnetic field generated by the second coil unit 5 interacts with the magnetic field of the driving magnet 6, so that the second coil unit 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 horizontal direction along the second direction, and the first direction is perpendicular to the second direction. Of course, the two second coil assemblies 5 may be energized at the same time, so that the two second coil assemblies 5 may drive the support member 4 to move in the first direction and the second direction in the horizontal direction.
In some embodiments, the flexible member 1 includes a flexible spring plate, and the flexible spring plate is used to realize functional integration, so that the arrangement of other parts is reduced, and the size of the whole camera module is reduced. In addition, the versatility of the flexible spring sheet is beneficial to reducing related components, thereby reducing costs.
Referring to fig. 8, in this embodiment, a hollow portion is formed on the flexible spring board, and a carrying portion 1-1 is disposed in the middle of the hollow portion of the flexible spring board, where the carrying portion 1-1 is used for carrying the imaging chip 7. The frame part 1-3 is arranged at the hollowed edge part of the flexible spring plate and is fixedly connected with the box body 8, and the elastic part 1-2 and the carrying part 1-1 are supported. The elastic part 1-2 is arranged in the hollowed part of the flexible spring plate, the elastic part 1-2 is composed of a plurality of spring wires, and after automatic focusing and anti-shake are finished, enough elastic force can be generated to reset the supporting piece 4.
Referring to fig. 8, in this embodiment, the elastic portion 1-2 includes a first contact portion 1-21 and a first bending portion 1-22, the first bending portion 1-22 is in an L-shaped bent plate structure, two ends of the first bending portion 1-22 are respectively connected with two first contact portions 1-21, and the two first contact portions 1-21 are respectively connected with the mounting portion 1-1 and the frame portion 1-3, so that the whole flexible spring plate is electrically conducted. One or more first bending portions 1-22 may be provided between the mounting portion 1-1 and the frame portion 1-3 in the circumferential direction of the mounting portion 1-1. In this embodiment, four equally divided first bending portions 1 to 22 are selected in the circumferential direction of the mounting portion 1 to 1. Multiple groups of wires can be arranged on each group of the first contact parts 1-21 and the first bending parts 1-22, and the widths of the first contact parts 1-21 and the first bending parts 1-22 can be set according to the wire requirements. Wherein the widths of the first contact portions 1-21 and the first bending portions 1-22 may be the same or different. Of course, the shape of the first bending portions 1 to 22 is not limited to the L shape, and the first bending portions 1 to 22 may be designed in a bow-like, arc-like or wave-like structure.
Referring to fig. 8, in the present embodiment, since the mounting portion 1-1 and the frame portion 1-3 are connected to the first bending portion 1-22 through the first contact portion 1-21, the mounting portion 1-1 can elastically move in a vertical direction and/or a horizontal direction with respect to the frame portion 1-3, so that the imaging chip 7 can be moved or reset in the vertical direction and/or the horizontal direction of the camera module 9. That is, the elastic portion 1-2 plays a role in not only elastically moving the imaging chip 7 but also conducting electricity and transmitting signals between the mounting portion 1-1 and the frame portion 1-3. Optionally, the mounting portion 1-1, the first contact portion 1-21, the first bending portion 1-22 and the frame portion 1-3 may be integrally formed by etching, so as to reduce the difficulty in manufacturing the component.
Referring to fig. 9, in the present embodiment, the flexible member 1 includes a support layer 1-4, an insulating layer 1-5, and a wiring layer 1-6. In this embodiment, the supporting layers 1-4 are metal layers or alloy layers, and have good ductility and elasticity, and the material of the supporting layers can be pure copper, titanium copper, beryllium copper, stainless steel or the like.
The insulating layer 1-5 is arranged on the supporting layer 1-4. In this embodiment, the insulating layers 1 to 5 may be made of rubber or silica gel.
Wherein, the insulating layers 1-5 are provided with wire grooves. In this embodiment, a line groove is reserved at a position where wiring is required by an exposure and development method. The wiring grooves are internally plated to form circuit layers 1-6, and the circuit layers 1-6 are connected with the photosensitive chip 7 to realize conduction and signal transmission. Preferably, the supporting layer 1-4 is T-shaped with a large upper part and a small lower part, the area of the end surface of the supporting layer 1-4 facing the insulating layer 1-5 is large, so that the contact area is ensured, the area of the end surface of the supporting layer 1-4 facing away from the insulating layer 1-5 is small, and smaller stress can be realized.
Referring to fig. 7, in some embodiments, the first coil assembly 3 is a coil body 3-1 etched or glued to the face of the carrier 2. When the coil body 3-1 is powered on, the coil body 3-1 generates 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, so as to drive the imaging chip 7 on the carrier 2 to move in the vertical direction. Of course, in other embodiments, the first coil assembly 3 may also include a second bracket and a coil body 3-1 wound on the second bracket. However, if the second bracket is used, the height of the carrier 2 in the vertical direction is increased, and thus, it is preferable that the first coil block 3 is the coil body 3-1 etched to the plate surface of the carrier 2.
In this 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 act, the first coil assembly 3 is formed by a coil body 3-1, and is formed into a whole ring shape surrounding the imaging chip 7, and the first coil assembly 3 is located below the driving magnet 6, so as to ensure that the magnetic field generated by the first coil assembly 3 can sufficiently act with the magnetic field of the driving magnet 6. Of course, in other embodiments, the number of coil bodies 3-1 may be plural, and there may be a space between each adjacent two of the coil bodies 3-1, the space corresponding to the position of the receiving groove 6-1 on the driving magnet 6. If the number of coil bodies 3-1 is plural, one power source is required for each coil body 3-1, resulting in high cost, and therefore, it is preferable that the number of coil bodies 3-1 is one.
In this embodiment, since the first coil assembly 3 is annular, the imaging chip 7 is sheet-shaped, and the coil body 3-1 is etched or adhered to the surface of the carrier 2, and meanwhile, the imaging chip 7 can be disposed in the first coil assembly 3, so that the structural design and the 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, so that the structure of the camera module is more compact, and the shoulder height size and the volume of the camera module are reduced.
In this embodiment, the coil body 3-1 is integrated on the board surface of the carrier 2 by etching or pasting, and no coil is required to be independently arranged on the carrier 2, so that the height of the carrier is reduced, the driving magnet 6 and the second coil 5 can be both arranged on the peripheral surface of the supporting member 4, and an enclosure layer is formed around the peripheral surface of the supporting member, so that the size of the whole camera module in the horizontal direction is reduced.
Based on the same inventive concept, the application also provides a camera module, the camera module adopts a driving device, the specific structure of the driving device refers to the above embodiments, and because all the technical schemes of all the embodiments are adopted, the camera module at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated here.
Referring to fig. 18 and 19, in some embodiments, the camera module includes a driving device, a filter 11, a camera assembly 9, and an imaging chip 7. The optical filter 11 is provided in the support 4 of the driving device, and faces the camera module 9, and the imaging chip 7 is mounted on the carrier 2 of the driving device. In this embodiment, the electrical number of the imaging chip 7 passes through the carrier 2 and is connected with the circuit layers 1-6 of the flexible member 1, so as to realize signal transmission. The driving means drives the imaging chip 7 to move in the horizontal direction and/or the vertical direction. The imaging chip 7 is capable of receiving image signals projected by the camera assembly 9.
Referring to fig. 1 and 2, in some embodiments, the camera module further includes a case 8 accommodating the flexible member 1, the carrier 2, the support member 4, and the driving magnet 6, and external signal interference is shielded by the case 8.
Referring to fig. 3, in the present embodiment, the case 8 includes a cover 8-1 and a base 8-2 coupled to 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 through the cover 8-1.
Referring to fig. 2, in some embodiments, the camera module further includes a spring assembly 10 disposed in the housing 8 and connected to the carrier 2.
The spring assembly 10 includes a spring 10-1 and a spacer 10-2.
The inner ring of the elastic piece 10-1 is connected with the supporting piece 4, the outer ring of the elastic piece 10-1 is connected with the box body 8, the inner ring of the elastic piece 10-1 is connected with the outer ring of the elastic piece 10-1 through the elastic piece 10-3, and after the supporting piece 4 completes elastic action along the vertical direction and/or the horizontal direction, the restoring of the supporting piece 4 is ensured through the elastic force of the elastic piece 10-3, so that the stability of the action of the supporting piece 4 is ensured. In the present embodiment, the number of the elastic members 10-3 is plural, preferably, the number of the elastic members 10-3 is four, and the four elastic members 10-3 are uniformly arranged between the inner ring of the elastic sheet 10-1 and the outer ring of the elastic sheet 10-1 at equal intervals, so as to ensure the balance of the forces applied to the supporting member 4.
The gasket 10-2 is arranged in the box 8, the gasket 10-2 is arranged between the elastic sheet 10-1 and the driving magnet 6, the gasket 10-2 is annular, when the supporting piece 4 moves along the vertical direction, the supporting piece 4 can pass through the gasket 10-2, and as the gasket 10-2 has a certain thickness, the distance between the elastic sheet 10-1 and the driving magnet 6 is increased, so that the supporting piece 4 has enough stroke in the vertical direction.
Referring to fig. 18, in the present embodiment, the camera module 9 passes through the top opening of the case 8, the opening of the top of the support 4, and the image obtained by the camera module 9 passes through the optical filter 11 and is finally imaged on the imaging chip 7.
Referring to fig. 18 and 19, in the present embodiment, the camera module further includes a flexible circuit board 12, and the flexible circuit board 12 is electrically connected to the circuit layers 1-6 of the flexible component 1, so as to realize signal transmission. The camera module 9 acquires an image signal, the image signal is projected on the imaging chip 7 and converted into an electric signal, and the electric signal is sent to the flexible circuit board 12 through the circuit layers 1-6 and is sent to the processor through the flexible circuit board 12.
Referring to fig. 19, in some embodiments, the camera assembly includes a mount 9-1 and an optical lens 9-2.
The fixing member 9-1 is provided outside the casing 8 of the driving device, and the fixing member 9-1 is supported by the casing 8.
The optical lens 9-2 is disposed in the fixing member 9-1, and the fixing member 9-1 supports the optical lens 9-2.
In this embodiment, a motor for driving the optical lens 9-2 is disposed in the fixing member 9-1, and the motor may be an AF (Auto focus) motor to achieve Auto focus of the optical lens 9-1. The first coil assembly 3 and the AF motor can achieve the effect of time-sharing multiplexing, and even if one of the first coil assembly 3 and the AF motor is damaged, the other can operate. Moreover, the first coil assembly 3, the driving magnet 6 and the AF motor are simultaneously applied, so that a larger distance movement can be realized, and if the displacement distance of the AF motor in the vertical direction is a1 and the displacement distance of the imaging chip 7 is a2, the relay focusing can be realized, and a larger a1+a2=a3 focusing distance can be realized.
Meanwhile, when the first coil assembly 3, the driving magnet 6 and the AF motor are simultaneously applied, the faster focusing speed can be realized, and the moving speed of the first coil assembly 3 and the AF motor can be fitted to obtain v1+v2=v3 on the premise that the moving speed of the AF motor in the vertical direction is v1 and the moving speed of the imaging chip 7 is v2, the simultaneous focusing is realized, and the faster focusing speed v3 is also realized.
In another embodiment, the motor may also be an optical anti-shake motor to achieve anti-shake of the optical lens 9-1. The simultaneous application of the second coil block 5 with 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 is dithered, the optical anti-shake motor drives the optical lens 9-2 to move in a direction opposite to the dithering direction according to the external dithering information, so as to compensate, that is, the optical anti-shake motor can realize the rotational movement of the optical lens 9-2 around the X axis and the Y axis to prevent the light from being deviated. At this time, the second coil assembly 5 also drives the imaging chip 7 to move in a direction opposite to the shake according to the external shake 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, so as to realize five-axis anti-shake, and also realize a larger anti-shake angle and a faster anti-shake speed.
In this embodiment, the second coil assembly 5, the driving magnet 6 and the optical anti-shake motor can achieve the effect of time division multiplexing, and even if one of the second coil assembly 5 and the optical anti-shake motor is damaged, the other can work.
The invention also provides a terminal device comprising the camera module in the embodiment. The terminal equipment comprises, but is not limited to, mobile phones, tablets or notebook computers and the like, and can be provided with the camera module only by opening holes with smaller sizes.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (11)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105022204A (en) * | 2015-08-07 | 2015-11-04 | 深圳市世尊科技有限公司 | Camera module for mobile terminal and mobile terminal |
| CN114793261A (en) * | 2021-01-25 | 2022-07-26 | 昆山丘钛微电子科技股份有限公司 | Prop up posture electromagnetic drive ware and camera module |
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| CN100570467C (en) * | 2006-09-29 | 2009-12-16 | 富士能株式会社 | Image shake correction unit, image shake correction device, photographing device, and portable device |
| JP5079836B2 (en) * | 2010-03-24 | 2012-11-21 | 台灣東電化股▲ふん▼有限公司 | Anti-shake structure of lens autofocus module |
| WO2021159391A1 (en) * | 2020-02-13 | 2021-08-19 | 南昌欧菲光电技术有限公司 | Camera module, photographing apparatus, and electronic device |
| CN114765652B (en) * | 2021-01-13 | 2022-12-06 | 宁波舜宇光电信息有限公司 | Camera module and terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022204A (en) * | 2015-08-07 | 2015-11-04 | 深圳市世尊科技有限公司 | Camera module for mobile terminal and mobile terminal |
| CN114793261A (en) * | 2021-01-25 | 2022-07-26 | 昆山丘钛微电子科技股份有限公司 | Prop up posture electromagnetic drive ware and camera module |
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