Driving device, anti-shake imaging device and terminal

Abstract

The embodiments of the present application disclose a driving device, an anti-shake imaging device, and a terminal. The driving device includes a base, a first movable structure, a second movable structure, a first fixed structure, a second fixed structure, a first connecting member, a second connecting member, and a driving structure. The first fixed structure is fixed to the base, and the first movable structure is connected to the first fixed structure via the first connecting member. The second movable structure is connected to the second fixed structure via the second connecting member, and the second movable structure is fixed to the first movable structure. The thickness of the first area on the first fixed structure is less than the thickness of the second area. The thickness of the third area on the second fixed structure is less than the thickness of the fourth area. The third area is located above the first area and is fixedly connected to the first area, and the second area and the fourth area do not overlap in a direction perpendicular to the base. The driving structure is used to drive the first movable structure and the second movable structure to move.

Description

Technical Field

[0001] The present application relates to the MEMS field, and in particular to a driving device, an anti-shake imaging device and a terminal. Background Art

[0002] Camera stabilization is a key technology in current mobile camera devices, improving image quality and user experience. Camera stabilization includes various solutions, including electronic, optical, and gimbal-mounted stabilization. Optical stabilization places the lens or image sensor on a micromotor, detecting camera shake to calculate the amount of vibration. This information is then transmitted to the micromotor, causing it to move in the opposite direction for compensation.

[0003] One current optical image stabilization solution utilizes a microelectromechanical system (MEMS). A camera module typically consists of a MEMS driver, image sensor, and substrate. These components are mechanically and electrically connected through methods such as patching, assembly, and wire bonding. In this solution, the image sensor is stacked directly on the MEMS driver, resulting in a thicker overall camera module. Summary of the Invention

[0004] The embodiments of the present application provide a driving device, an anti-shake imaging device, and a terminal, which reduce the overall thickness of the driving device.

[0005] In a first aspect, an embodiment of the present application provides a driving device, which includes: a base, a first movable structure, a second movable structure, a first fixed structure, a second fixed structure, a first connecting member, a second connecting member and a driving structure. The first fixed structure is fixed to the base, and the first movable structure is connected to the first fixed structure through the first connecting member. The second movable structure is connected to the second fixed structure through the second connecting member, and the second movable structure is fixed to the first movable structure. The first fixed structure includes a first area and a second area, and the thickness of the first area is less than the thickness of the second area. The second fixed structure includes a third area and a fourth area, and the thickness of the third area is less than the thickness of the fourth area. The first area is fixedly connected to the third area, the third area is located above the first area, and the second area and the fourth area do not overlap in a direction perpendicular to the base. The driving structure is located between the first fixed structure and the first movable structure, and / or the driving structure is located between the second fixed structure and the second movable structure. The driving structure is used to drive the first movable structure and the second movable structure to move.

[0006] In this embodiment, the first and second fixing structures can be divided into different areas based on their thickness. The thinner areas of the first and second fixing structures can at least partially fit together vertically, while the thicker areas are staggered vertically. Therefore, the combined thickness of the first and second fixing structures is less than the sum of the maximum thicknesses of the first and second fixing structures, reducing the overall thickness of the drive device and facilitating a lightweight and thin design.

[0007] In some possible implementations, the first movable structure is a movable stage, and the second movable structure is a movable frame. The drive device also includes an image sensor, which is fixed to the first movable structure and located inside the second movable structure. The above method provides a specific implementation for placing the image sensor. The drive structure can drive the image sensor to move by driving the first movable structure, thereby achieving optical image stabilization.

[0008] In some possible implementations, the first movable structure includes a first cavity, and the image sensor is fixed in the first cavity. Compared with a method of directly stacking the image sensor on the first movable structure, the overall thickness of the driving device can be further reduced.

[0009] In some possible implementations, the second movable structure is a movable platform, and the first movable structure is a movable platform or a movable frame. The drive device also includes an image sensor, which is fixed to the second movable structure. The above method provides another specific implementation for placing the image sensor. The drive structure can drive the image sensor to move by driving the second movable structure, thereby achieving optical image stabilization and enhancing the scalability of this solution.

[0010] In some possible implementations, the second movable structure includes a second cavity, and the image sensor is fixed in the second cavity. Compared with a method of directly stacking the image sensor on the second movable structure, the overall thickness of the driving device can be further reduced.

[0011] In some possible implementations, the substrate is electrically connected to the first fixed structure, the image sensor is electrically connected to the first movable structure, and the first movable structure is electrically connected to the first fixed structure via a first connector to facilitate routing the image sensor signal to the substrate. Electrical wiring between the first movable structure and the first fixed structure can be provided along the first connector, resulting in more organized wiring.

[0012] In some possible implementations, the substrate is electrically connected to the second fixed structure, the image sensor is electrically connected to the second movable structure, and the second movable structure is electrically connected to the second fixed structure via a second connector to facilitate routing the image sensor signal to the substrate. Electrical wiring can be provided between the second movable structure and the second fixed structure along the second connector, resulting in more organized wiring.

[0013] In some possible embodiments, the drive structure includes a first drive comb and a second drive comb, and the first connecting member includes a first cantilever beam and a second cantilever beam. The first end of the first movable structure is connected to the first fixed structure via the first cantilever beam, and the second end of the first movable structure is connected to the first fixed structure via the second cantilever beam. The first end and the second end of the first movable structure are the two ends of the first movable structure on the first axial direction. The first drive comb includes a first fixed comb and a first movable comb, the first fixed comb and the first movable comb are arranged alternately, the first movable comb is connected to the first end of the first movable structure, and the first fixed comb is connected to the first fixed structure. The second drive comb includes a second fixed comb and a second movable comb, the second fixed comb and the second movable comb are arranged alternately, the second movable comb is connected to the second end of the first movable structure, and the second fixed comb is connected to the first fixed structure. The first drive comb and the second drive comb are used to drive the first movable structure and the second movable structure to move on the first axial direction. The above method provides a specific implementation method of the drive structure and the first connecting member, which enhances the feasibility of this solution.

[0014] In some possible embodiments, the drive structure further includes third and fourth drive comb teeth, and the second connecting member includes third and fourth cantilever beams. The first end of the second movable structure is connected to the second fixed structure via the third cantilever beam, and the second end of the second movable structure is connected to the second fixed structure via the fourth cantilever beam. The first and second ends of the second movable structure are the two ends of the second movable structure along the second axis. The third drive comb teeth include third fixed comb teeth and third movable comb teeth, which are staggered with the third movable comb teeth. The third movable comb teeth are connected to the first end of the second movable structure, and the third fixed comb teeth are connected to the second fixed structure. The fourth drive comb teeth include fourth fixed comb teeth and fourth movable comb teeth, which are staggered with the fourth movable comb teeth. The fourth movable comb teeth are connected to the second end of the second movable structure, and the fourth fixed comb teeth are connected to the second fixed structure. The third and fourth drive comb teeth are used to drive the first and second movable structures to move along the second axis. In this embodiment, the upper and lower layers of drive comb teeth can be driven in different directions. In optical image stabilization applications, compensation in multiple directions can be achieved, resulting in a better optical image stabilization effect.

[0015] In some possible embodiments, a first stop structure is formed on the first fixed structure, and a second stop structure is formed on the first movable structure. The first and second stop structures are used to stop the first and second movable structures in a plane parallel to the first movable structure. This approach can limit the maximum horizontal displacement of the first and second movable structures, reduce the maximum stress in the drive device, and improve the reliability of the drive device.

[0016] In some possible implementations, a third stop structure is formed on the second fixed structure, and a fourth stop structure is formed on the second movable structure. The third and fourth stop structures are used to stop the first and second movable structures in a plane parallel to the second movable structure. This approach can also limit the maximum horizontal displacement of the first and second movable structures, thereby increasing the flexibility of this solution.

[0017] In some possible embodiments, a fifth stop structure is formed on the first movable structure, and a sixth stop structure is formed on the second fixed structure. The fifth and sixth stop structures are used to stop the first and second movable structures in a direction perpendicular to the base. In this embodiment, the stop structures can also limit the displacement of the first and second movable structures in a direction perpendicular to the base, thereby preventing damage to the first and second connecting members and improving the reliability of the drive device.

[0018] In some possible implementations, a seventh stop structure is formed on the first fixed structure, and an eighth stop structure is formed on the second movable structure. The seventh and eighth stop structures are used to stop the first and second movable structures in a direction perpendicular to the base. This approach can also limit the displacement of the first and second movable structures in a direction perpendicular to the base, thereby increasing the flexibility of this solution.

[0019] In some possible embodiments, a boss or a through hole is provided on the base. During the assembly of the driving device, the boss can be used to support the first movable structure, or a support column can be used to pass through the through hole to support the first movable structure, so as to improve reliability during the assembly process.

[0020] In some possible embodiments, the first fixed structure is a first fixed frame, and the first movable structure is located inside the first fixed frame. The second fixed structure is a second fixed frame, and the second movable structure is located inside the second fixed frame. Using a frame as the fixed structure improves the overall stability of the drive device.

[0021] In some possible implementations, the first movable structure is a first movable frame, the first fixed structure is located inside the first movable structure, and the second movable structure is a second movable frame, the second fixed structure is located inside the second movable structure. Unlike the aforementioned implementations, this implementation allows the fixed structure and movable structure to be interchanged, improving the scalability of the solution.

[0022] In some possible implementations, the driving device also includes an image sensor, which is fixed on the second movable structure. The above method provides a specific implementation method for placing the image sensor. The driving structure can drive the image sensor to move by driving the second movable structure to move, thereby achieving optical image stabilization.

[0023] In some possible implementations, the substrate is a printed circuit board (PCB).

[0024] In a second aspect, embodiments of the present application provide an anti-shake imaging device. The anti-shake imaging device includes a controller and a drive device as described in any embodiment of the first aspect. The controller is electrically connected to the drive device. The drive device includes an image sensor. The controller is configured to output a control signal to the drive device to control the drive device to move the image sensor.

[0025] In a third aspect, embodiments of the present application provide a terminal. The terminal includes a processor, a memory, and the anti-shake imaging device described in the second aspect. The processor, memory, and anti-shake imaging device are interconnected via a bus. The memory is used to store programs and instructions, and the processor is used to call the programs and instructions stored in the memory to control the anti-shake imaging device.

[0026] In the embodiment of the present application, the first and second fixing structures can be divided into different regions based on their thickness. The thinner regions of the first and second fixing structures can at least partially fit together vertically, while the thicker regions are staggered vertically. Therefore, the combined thickness of the first and second fixing structures is less than the sum of the maximum thickness of the first and second fixing structures, reducing the overall thickness of the drive device and facilitating a lightweight and thin design. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1( a ) is a perspective view of a first structure of a driving device according to an embodiment of the present application;

[0028] FIG1( b ) is a first structural exploded view of the driving device in an embodiment of the present application;

[0029] FIG2( a ) is a perspective view of a second structure of a driving device in an embodiment of the present application;

[0030] FIG2( b ) is a top view of a second structure of the driving device in an embodiment of the present application;

[0031] FIG3( a ) is a third structural exploded view of the driving device in an embodiment of the present application;

[0032] FIG3( b ) is a fourth structural exploded view of the driving device in an embodiment of the present application;

[0033] Figure 4 This is a fifth structural exploded view of the driving device in the embodiment of the present application;

[0034] Figure 5 This is a sixth structural exploded view of the driving device in the embodiment of the present application;

[0035] FIG6( a ) is a seventh structural exploded view of the driving device in an embodiment of the present application;

[0036] FIG6( b ) is a schematic longitudinal sectional view of a seventh structure of the driving device in an embodiment of the present application;

[0037] FIG7( a ) is an exploded view of an eighth structure of the driving device according to an embodiment of the present application;

[0038] FIG7( b ) is a ninth structural exploded view of the driving device according to an embodiment of the present application;

[0039] FIG8( a ) is a schematic diagram of a first structural example of a substrate in an embodiment of the present application;

[0040] FIG8( b ) is a schematic diagram of a second structure of a substrate in an embodiment of the present application;

[0041] Figure 9 This is a tenth structural exploded view of the driving device in the embodiment of the present application;

[0042] Figure 10 This is a schematic structural diagram of an anti-shake imaging device according to an embodiment of the present application;

[0043] Figure 11 This is a schematic diagram of the structure of the terminal in the embodiment of the present application. DETAILED DESCRIPTION

[0044] The embodiments of the present application provide a driving device, an anti-shake imaging device and a terminal, which reduce the overall thickness of the driving device. The terms "first", "second", etc. (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] Figure 1(a) is a three-dimensional diagram of the first structure of the driving device in an embodiment of the present application. Figure 1(b) is an exploded diagram of the first structure of the driving device in an embodiment of the present application. As shown in Figures 1(a) and 1(b), the driving device includes: a base 10, a first movable structure 20, a first fixed structure 30, a second fixed structure 40, a second movable structure 50, a first connecting member 60, a second connecting member 70 and a driving structure 80. The first fixed structure 30 is fixed to the base 10. The first movable structure 20 is connected to the first fixed structure 30 through the first connecting member 60. The second movable structure 50 is connected to the second fixed structure 40 through the second connecting member 70. Among them, the second movable structure 50 is fixed to the first movable structure 20. It should be understood that the present application does not limit the number of first connecting members 60 and second connecting members 70.

[0046] The drive structure 80 is located between the first fixed structure 30 and the first movable structure 20, and / or between the second fixed structure 40 and the second movable structure 50. The drive structure 80 is used to drive the movement of the first movable structure 20 and the second movable structure 50. In other words, this application provides multiple drive structure design solutions. Since the first movable structure 20 and the second movable structure 50 are fixed together, the drive structure 80 only needs to be able to drive the movement of either the first movable structure 20 or the second movable structure 50. The following first describes a specific implementation of the drive structure 80 using the structure shown in Figure 1(b) as an example.

[0047] As shown in Figure 1(b), the drive structure 80 includes a drive comb 801 and a drive comb 802, each of which has fixed comb teeth and movable comb teeth. The first connecting member 60 includes a cantilever beam 601 and a cantilever beam 602. Specifically, the fixed comb teeth and movable comb teeth of the drive comb 801 are arranged in a staggered manner, the fixed comb teeth of the drive comb 801 are connected to the first fixed structure 30, and the movable comb teeth of the drive comb 801 are connected to the first end of the first movable structure 20. The first end of the first movable structure 20 is also connected to the first fixed structure 30 via the cantilever beam 601. The fixed comb teeth and movable comb teeth of the drive comb 802 are arranged in a staggered manner, the fixed comb teeth of the drive comb 802 are connected to the first fixed structure 30, and the movable comb teeth of the drive comb 802 are connected to the second end of the first movable structure 20. The second end of the first movable structure 20 is also connected to the first fixed structure 30 via the cantilever beam 602. The first end and the second end of the first movable structure 20 are the two ends of the first movable structure 20 in the first axial direction. It should be understood that by changing the potential between the fixed comb teeth and the movable comb teeth, the attractive force between the fixed comb teeth and the movable comb teeth can be changed, so that the driving comb teeth 801 and the driving comb teeth 802 drive the first movable structure 20 to move in the first axial direction.

[0048] In some possible embodiments, the driving structure 80 further includes driving comb teeth 803 and driving comb teeth 804, and the first connecting member 60 further includes a cantilever beam 603 and a cantilever beam 604. The third end of the first movable structure 20 is connected to the first fixed structure 30 via the cantilever beam 603, and the fourth end of the first movable structure 20 is connected to the first fixed structure 30 via the cantilever beam 604. The third end and the fourth end of the first movable structure 20 are the two ends of the first movable structure 20 on the second axial direction. The driving comb teeth 803 and the driving comb teeth 804 respectively have their own fixed comb teeth and movable comb teeth. Specifically, the fixed comb teeth and movable comb teeth of the driving comb teeth 803 are staggered, the fixed comb teeth of the driving comb teeth 803 are connected to the first fixed structure 30, and the movable comb teeth of the driving comb teeth 803 are connected to the third end of the first movable structure 20. The fixed comb teeth and movable comb teeth of the driving comb teeth 804 are arranged alternately. The fixed comb teeth of the driving comb teeth 804 are connected to the first fixed structure 30, and the movable comb teeth of the driving comb teeth 804 are connected to the fourth end of the first movable structure 20. It should be understood that by changing the potential between the fixed comb teeth and the movable comb teeth, the attractive force between the fixed comb teeth and the movable comb teeth can be changed, so that the driving comb teeth 803 and the driving comb teeth 804 drive the first movable structure 20 to move in the second axial direction.

[0049] It should be noted that the first fixing structure 30 and the second fixing structure 40 are fixed together, wherein the first fixing structure 30 and the second fixing structure 40 can be divided into different regions based on their thickness. Specifically, the first fixing structure 30 includes a first region and a second region, wherein the thickness of the first region is less than that of the second region. The second fixing structure 40 includes a third region and a fourth region, wherein the thickness of the third region is less than that of the fourth region. The third region is located above and fixedly connected to the first region, and the second and fourth regions do not overlap in a direction perpendicular to the substrate. In other words, the thinner region of the second fixing structure 40 is superimposed on the thinner region of the first fixing structure 30 and fixedly connected, while the thicker region of the second fixing structure 40 is not directly superimposed on the thicker region of the first fixing structure 30 but is offset from the thicker region of the first fixing structure 30. Therefore, the overall thickness d0 of the assembled first and second fixing structures 30 is less than the sum of the maximum thickness d1 of the first fixing structure 30 and the maximum thickness d2 of the second fixing structure 40. It should be understood that in a direction perpendicular to the substrate, the first and third regions can completely overlap or only partially overlap, and this is not limited here. Taking Figures 1(a) and 1(b) above as an example, the first fixed structure 30 and the second fixed structure 40 are both rectangular, the four corner areas of the first fixed structure 30 and the second fixed structure 40 are thicker areas, the four sides of the first fixed structure 30 and the second fixed structure 40 are thinner areas, the four sides of the first fixed structure 30 and the second fixed structure 40 are respectively fitted together up and down, and the four corners of the first fixed structure 30 and the second fixed structure 40 are respectively fitted together up and down.

[0050] As an example, the sum of the thickness of the thinner first region of the first fixed structure 30 and the thickness of the thinner third region of the second fixed structure 40 is equal to the thickness of the thicker second region of the first fixed structure 30, and the thickness of the thicker second region of the first fixed structure 30 is equal to the thickness of the thicker fourth region of the second fixed structure 40. Preferably, the thickness of the first movable structure 20 is the same as the thickness of the thinner first region of the first fixed structure 30. The thickness of the second movable structure 50 is the same as the thickness of the thinner third region of the second fixed structure 40. In this way, the overall thickness of the first fixed structure 30 and the second fixed structure 40 combined is the same as the overall thickness of the first movable structure 20 and the second movable structure 50 combined.

[0051] It should be understood that in actual applications, the first fixing structure 30 and the second fixing structure 40 can be flexibly divided into regions of different thicknesses, as long as at least a portion of the thinner regions of the first fixing structure 30 and the second fixing structure 40 can be vertically aligned, and the thicker regions of the first fixing structure 30 and the second fixing structure 40 are staggered vertically. Specific limitations are not provided herein. Another possible implementation is provided below.

[0052] Figure 2(a) is a perspective view of the second structure of the driving device in the embodiment of the present application. Figure 2(b) is a top view of the second structure of the driving device in the embodiment of the present application. As shown in Figures 2(a) and 2(b), the first fixed structure 30 and the second fixed structure 40 are both rectangular. The length of the first set of opposite sides of the first fixed structure 30 is less than the length of the first set of opposite sides of the second fixed structure 40, and the first set of opposite sides of the first fixed structure 30 is parallel to the first set of opposite sides of the second fixed structure 40. The length of the second set of opposite sides of the first fixed structure 30 is greater than the length of the second set of opposite sides of the second fixed structure 40, and the second set of opposite sides of the first fixed structure 30 is parallel to the second set of opposite sides of the second fixed structure 40. Therefore, the first fixed structure 30 and the second fixed structure 40 can be assembled together by interlocking up and down. Specifically, the first set of opposite sides of the first fixed structure 30 is a first region with a relatively thin thickness, and the second set of opposite sides of the first fixed structure 30 is a second region with a relatively thick thickness. The first set of opposite sides of the second fixed structure 40 is a fourth region with a relatively thick thickness, and the second set of opposite sides of the second fixed structure 40 is a third region with a relatively thin thickness. The first and third regions are fixedly connected at four locations near the four corners, and except for the locations where the first fixing structure 30 and the second fixing structure 40 are fixedly connected, the first fixing structure 30 and the second fixing structure 40 are interlocked at other locations. It should be understood that the driving structure 80 and the first connecting member 60 in the structures shown in Figures 2(a) and 2(b) can refer to the relevant description of the embodiment shown in Figure 1(b) above, and the reference numerals and text descriptions are not provided here.

[0053] In one possible embodiment, as shown in Figures 1(a) and 1(b), the first fixed structure 30 is a first fixed frame, and the second fixed structure 40 is a second fixed frame. The first movable structure 20 is located inside the first fixed structure 30, and the second movable structure 50 is located inside the second fixed structure 40. Using a frame as a fixed structure can provide overall stability of the drive device. It should be understood that in actual applications, the first fixed structure 30 and the second fixed structure 40 can also adopt a non-frame structure. For example, the first fixed structure 30 can be divided into multiple independent parts distributed around the first movable structure 20, and each part of the first fixed structure 30 can be connected to the first movable structure 20 through a first connecting member 60. Similarly, the second fixed structure 40 can be divided into multiple independent parts distributed around the second movable structure 50, and each part of the second fixed structure 40 can be connected to the second movable structure 50 through a second connecting member 70.

[0054] It should be noted that the various components of the aforementioned drive device on the base 10 can generally be divided into two layers. The first layer includes a first movable structure 20, a first fixed structure 30, and a first connector 60. The second layer includes a second fixed structure 40, a second movable structure 50, and a second connector 70. Specifically, the first and second layers can perform different functions. These functions are described below in conjunction with various embodiments.

[0055] Figure 3(a) is a third structural exploded view of the drive device in an embodiment of the present application. As shown in Figure 3(a), the drive device also includes an image sensor 90. The image sensor 90 is fixed to the first movable structure 20, and the drive structure 80 is located between the first movable structure 20 and the first fixed structure 30. The drive structure 80 drives the image sensor 90 by driving the first movable structure 20 to move, thereby achieving the optical image stabilization function. In order for the signal from the image sensor 90 to be output to the substrate 10, it is necessary to achieve an electrical connection between the image sensor 90 and the substrate 10. Specifically, the substrate 10 is electrically connected to the second fixed structure 40, and the image sensor 90 is electrically connected to the second movable structure 50. The second movable structure 50 is electrically connected to the second fixed structure 40 via the second connector 70. It should be understood that electrical wiring can be performed between the second movable structure 50 and the second fixed structure 40 along the second connector 70, which provides more regular wiring. As an example, the substrate 10 is specifically a printed circuit board (PCB). In this embodiment, the first layer structure is used to drive the image sensor 90 , and the second layer structure is used to electrically connect the image sensor 90 to the substrate.

[0056] It should be understood that reasonable transformations based on the structure shown in FIG. 3( a ) can also achieve a functional reversal between the first and second layers, i.e., the second layer is used to drive the image sensor 90, while the first layer is used to electrically connect the image sensor 90 to the substrate. FIG. 3( b ) is a fourth structural exploded view of the drive device in the embodiment of the present application. As shown in FIG. 3( b ), the drive structure 80 is located between the second movable structure 50 and the second fixed structure 40 . The drive structure 80 drives the image sensor 90 by driving the second movable structure 50 to move, thereby achieving the optical image stabilization function. The implementation of the drive structure 80 is similar to that described in FIG. 1( b ) and will not be further described here. The substrate 10 is electrically connected to the first fixed structure 30 , and the image sensor 90 is electrically connected to the first movable structure 20 . The first movable structure 20 is electrically connected to the first fixed structure 30 via the first connector 60 . Electrical wiring between the first movable structure 20 and the first fixed structure 30 can be conducted along the first connector 60 , making the wiring more organized.

[0057] In some possible implementations, as shown in FIG1( b ), a first cavity 20 a may be provided on the first movable structure 20 to facilitate securing the image sensor 90 within the first cavity 20 a. Compared to directly stacking the image sensor 90 on the first movable structure 20, the overall thickness of the drive device can be further reduced.

[0058] Figure 4 This is the fifth structural decomposition diagram of the driving device in the embodiment of the present application. Figure 4As shown, the driving structure 80 includes driving comb teeth 801, driving comb teeth 802, driving comb teeth 805 and driving comb teeth 806, the first connecting member 60 specifically includes cantilever beams 601 and 602, and the second connecting member 70 includes cantilever beams 701 and 702. Among them, the driving comb teeth 801, the driving comb teeth 802, the cantilever beams 601 and 602 can refer to the relevant introduction of the embodiment shown in Figure 1(b) above, and will not be repeated here. The first end of the second movable structure 50 is connected to the second fixed structure 40 through the cantilever beam 701, and the second end of the second movable structure 50 is connected to the second fixed structure 40 through the cantilever beam 702. Among them, the first end and the second end of the second movable structure 50 are the two ends of the second movable structure 50 on the second axial direction. The driving comb teeth 805 and the driving comb teeth 806 respectively have their own fixed comb teeth and movable comb teeth. Specifically, the fixed comb teeth and movable comb teeth of the driving comb teeth 805 are arranged in a staggered manner. The fixed comb teeth of the driving comb teeth 805 are connected to the second fixed structure 40, and the movable comb teeth of the driving comb teeth 805 are connected to the first end of the second movable structure 50. The fixed comb teeth and movable comb teeth of the driving comb teeth 806 are arranged in a staggered manner. The fixed comb teeth of the driving comb teeth 806 are connected to the second fixed structure 40, and the movable comb teeth of the driving comb teeth 806 are connected to the second end of the second movable structure 50. It should be understood that by changing the electric potential between the fixed comb teeth and the movable comb teeth, the attractive force between the fixed comb teeth and the movable comb teeth can be changed, so that the driving comb teeth 805 and the driving comb teeth 806 drive the second movable structure 50 to move in the second axial direction. Since the second movable structure 50 is fixedly connected to the first movable structure 20, it is equivalent to the driving comb teeth 805 and the driving comb teeth 806 being able to drive the first movable structure 20 to move in the second axial direction. In this embodiment, both the first layer structure and the second layer structure are used to realize the driving function, and the driving comb teeth in the upper and lower layers of the structure are driven in different directions respectively. In the application scenario of optical image stabilization, compensation in multiple directions can be achieved, and the optical image stabilization effect is better.

[0059] Figure 5 This is the sixth structural decomposition diagram of the driving device in the embodiment of the present application. Figure 5 As shown, a stop structure 401 is further formed on the second fixed structure 40, and a stop structure 402 is further formed on the second movable structure 50. When the horizontal displacement of the first movable structure 20 and the second movable structure 50 is large, the stop structure 401 will abut against the stop structure 501, thereby limiting the maximum horizontal displacement of the first movable structure 20 and the second movable structure 50, reducing the maximum stress in the drive device and improving the reliability of the drive device. It should be understood that the above-mentioned stop structures 401 and 501 are provided in pairs, and this application does not limit the specific number of stop structures 401 and 501.

[0060] In some possible implementations, the aforementioned stop structure 401 can also be formed on the first fixed structure 30, and the aforementioned stop structure 501 can also be formed on the first movable structure 20. Figures are not provided here for illustration. When the horizontal displacement between the first movable structure 20 and the second movable structure 50 is large, this can also serve to limit the maximum horizontal displacement of the first movable structure 20 and the second movable structure 50. In other words, horizontal stop structures can be provided on both the upper and lower layers, increasing the flexibility of this solution.

[0061] FIG6( a ) is an exploded view of the seventh structure of the driving device in the embodiment of the present application. FIG6( b ) is a schematic longitudinal section view of the seventh structure of the driving device in the embodiment of the present application. As shown in FIG6( a ) and FIG6( b ), a stop structure 201 is formed on the first movable structure 20, a stop structure 301 is formed on the first fixed structure 30, a stop structure 402 is formed on the second fixed structure 40, and a stop structure 502 is formed on the second movable structure 50. The stop structure 402 and the stop structure 201 are a group. When the first movable structure 20 and the second movable structure 50 move as a whole in a direction away from the base 10, the stop structure 402 will abut against the stop structure 201, thereby limiting the maximum displacement of the first movable structure 20 and the second movable structure 50 in the direction away from the base 10. The stop structure 502 and the stop structure 301 form a set. When the first movable structure 20 and the second movable structure 50 move as a whole toward the base 10, the stop structure 502 abuts against the stop structure 301, thereby limiting the maximum displacement of the first movable structure 20 and the second movable structure 50 in the direction toward the base 10. In other words, this solution can also improve the reliability of the driving device by providing a stop structure to limit the displacement of the first movable structure 20 and the second movable structure 50 in a direction perpendicular to the base 10.

[0062] It should be noted that in the above Figure 1(a)-Figure 6(b) In the illustrated embodiment, the first movable structure 20 is a movable platform, and the second movable structure 50 is a movable frame. Specifically, the image sensor 90 is fixed to the first movable structure 20 and is located inside the second movable structure 50. In some possible implementations, the second movable structure 50 can also be designed as a movable platform, and the first movable structure 20 can be a movable frame or a movable platform. Specifically, the image sensor can also be fixed to the second movable structure 50. The following description will be further described using the example of both the second movable structure 50 and the first movable structure 20 being movable platforms.

[0063] Figure 7(a) is an exploded view of the eighth embodiment of the drive mechanism in the present application. As shown in Figure 7(a), unlike the embodiment shown in Figure 3(a), the image sensor 90 in this embodiment is fixed to a second movable structure 50, which serves as a movable stage. It should be understood that the other components of the structure shown in Figure 7(a), other than the second movable structure 50, can be referred to in the relevant descriptions of the aforementioned embodiments and will not be further elaborated here.

[0064] Figure 7(b) is an exploded view of the ninth embodiment of the drive device in the present application. As shown in Figure 7(b), in some possible implementations, the second movable structure 50 may further include a second cavity 50a to facilitate securing the image sensor 90 within the second cavity 50a. Compared to directly stacking the image sensor 90 on the second movable structure 50, this can further reduce the overall thickness of the drive device.

[0065] It should be noted that, in some possible implementations, reference may also be made to FIG. 2(a), FIG. 2(b) and FIG. Figure 4-Figure 6(b) The design of the driving device shown in FIG7(a) and FIG7(b) is modified accordingly. Figure 4-Figure 6(b) The relevant introduction of the illustrated embodiments will not be provided here one by one with drawings and text descriptions.

[0066] Figure 8(a) is a schematic diagram of the first structure of the substrate in an embodiment of the present application. Figure 8(b) is a schematic diagram of the second structure of the substrate in an embodiment of the present application. As shown in Figure 8(a), a boss 101 may also be provided on the substrate 10. As shown in Figure 8(b), a through hole 102 may also be provided on the substrate. It should be understood that the present application does not limit the number and shape of the bosses 101 and the through holes 102. During the assembly of the drive device, the first movable structure 20 may be supported by the boss 101, or the first movable structure 20 may be supported by a support column passing through the through hole 102, so as to improve the reliability during the assembly process.

[0067] In some possible implementations, the fixed structure and the movable structure may be swapped based on the driving device described in the above embodiment, which will be described below with reference to the accompanying drawings.

[0068] Figure 9 This is the tenth structural decomposition diagram of the driving device in the embodiment of the present application. Figure 9As shown, unlike the above-mentioned embodiments, the first movable structure 20 in this embodiment is located outside the first fixed structure 30, and the second movable structure 50 is located outside the second fixed structure 40. For example, both the first movable structure 20 and the second movable structure 50 are designed as movable frames. Specifically, the first fixed structure 30 is fixed to the base 10, and the second movable structure 50 is fixed to the first movable structure 20. The first fixed structure 30 is connected to the first movable structure 20 via a first connector 60, and the second fixed structure 40 is connected to the second movable structure 50 via a second connector 70. An image sensor can be placed on the second movable structure 50. The drive structure 80 is used to drive the first movable structure 20 and the second movable structure 50 to move, thereby driving the image sensor. Accordingly, thicker and thinner areas can be designed on the first fixed structure 30, and thicker and thinner areas can be designed on the second fixed structure 40. Among them, at least a portion of the thinner areas of the first fixing structure 30 and the second fixing structure 40 can fit together vertically, and the thicker areas of each can be staggered vertically. The specific design method can refer to the design method described in the embodiment shown in Figures 1(a) and 1(b) above, and will not be repeated here. It should be understood that it can also refer to the above Figure 2(a)-Figure 7(b) The relevant design of the drive device shown is Figure 9 The driving device shown in FIG. Figure 2(a)-Figure 7(b) The relevant introduction of the illustrated embodiments will not be provided here one by one with drawings and text descriptions.

[0069] In each of the above embodiments, the first and second fixing structures can be divided into different regions based on their thickness. Specifically, at least a portion of the thinner regions of the first and second fixing structures can fit vertically together, while the thicker regions of the first and second fixing structures are staggered vertically. Therefore, the combined thickness of the first and second fixing structures is less than the sum of the maximum thicknesses of the first and second fixing structures, reducing the overall thickness of the drive device and facilitating a lightweight and thin design.

[0070] Based on the driving devices described in the above embodiments, the embodiments of the present application further provide an anti-shake imaging device and a terminal, which are described below respectively.

[0071] Figure 10 FIG is a schematic diagram of the structure of the anti-shake imaging device in the embodiment of the present application. Figure 10As shown, the anti-shake imaging device includes a controller 1001 and a driving device 1002, and the controller 1001 and the driving device 1002 are electrically connected. Specifically, the driving device 1002 includes an image sensor, and the controller 1001 is used to output a control signal to the driving device to control the driving device to drive the image sensor to move, thereby achieving optical image stabilization. It should be noted that, except for the image sensor, the other structures in the driving device 1002 can adopt the design method of any of the embodiments of Figures 1(a) to 8 above, and the details will not be introduced one by one here. In some possible implementations, the substrate of the driving device 1002 is a PCB, and the controller 1001 can be integrated on the PCB.

[0072] The above-mentioned anti-shake imaging device may be a component of a terminal, and the following description will be made taking a mobile phone as an example.

[0073] Figure 11 This is a schematic diagram of the structure of the terminal in the embodiment of the present application. Figure 11 As shown, the mobile phone includes components such as a memory 1120, an input unit 1130, a display unit 1140, an anti-shake imaging device 1150, a processor 1160, and a power supply 1170. Those skilled in the art will understand that Figure 11 The mobile phone structure shown in the figure does not constitute a limitation to the mobile phone, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0074] The following combination Figure 11 A detailed introduction to the various components of a mobile phone:

[0075] The memory 1120 can be used to store software programs and modules. The processor 1160 executes the various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 1120. The memory 1120 may mainly include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function (such as a sound playback function, an image playback function, etc.); the data storage area may store data created based on the use of the mobile phone (such as audio data, a phone book, etc.). In addition, the memory 1120 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0076] The input unit 1130 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile phone. Specifically, the input unit 1130 may include a touch panel 1131 and other input devices 1132. The touch panel 1131, also known as a touch screen, can collect user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any other suitable object or accessory on or near the touch panel 1131) and drive the corresponding connection device according to a pre-set program. Optionally, the touch panel 1131 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch direction and detects the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 1160. It can also receive commands sent by the processor 1160 and execute them. In addition, the touch panel 1131 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1131, the input unit 1130 may further include other input devices 1132. Specifically, the other input devices 1132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power keys, etc.), a trackball, a mouse, and a joystick.

[0077] The display unit 1140 can be used to display information input by the user or information provided to the user and various menus of the mobile phone. In the embodiment of the present application, it is mainly used to display the captured image. The display unit 1140 may include a display panel 1141. Optionally, the display panel 1141 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. Further, the touch panel 1131 may cover the display panel 1141. When the touch panel 1131 detects a touch operation on or near it, it is transmitted to the processor 1160 to determine the type of touch event. The processor 1160 then provides a corresponding visual output on the display panel 1141 according to the type of touch event. Although in Figure 11 In the embodiment, the touch panel 1131 and the display panel 1141 are used as two independent components to realize the input and output functions of the mobile phone, but in some embodiments, the touch panel 1131 and the display panel 1141 can be integrated to realize the input and output functions of the mobile phone.

[0078] The processor 1160 can be used to control the movement of the image sensor in the anti-shake imaging device 1150 to suppress the image blur caused by the shaking of the mobile phone, thereby realizing the optical anti-shake function. Figure 10The illustrated embodiment introduces an anti-shake imaging device.

[0079] The processor 1160 is the control center of the mobile phone. It uses various interfaces and lines to connect the various parts of the entire mobile phone. By running or executing software programs and / or modules stored in the memory 1120 and calling data stored in the memory 1120, it performs various functions of the mobile phone and processes data, thereby monitoring the mobile phone as a whole. In the embodiment of the present application, the processor is mainly used to call programs and instructions stored in the memory and control the imaging device through the controller. Optionally, the processor 1160 may include one or more processing units; preferably, the processor 1160 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface and application programs, etc., and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 1160. In the embodiment of the present application, the processor 1160 can also perform denoising, enhancement, segmentation and blurring on the image based on the signal obtained from the image sensor.

[0080] The mobile phone also includes a power supply 1170 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 1160 through a power management system, thereby managing charging, discharging, and power consumption through the power management system.

[0081] It should be noted that the above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A driving device, characterized in that: include: a base, a first movable structure, a second movable structure, a first fixed structure, a second fixed structure, a first connecting member, a second connecting member, and a driving structure; The first fixed structure is fixed on the base, the first movable structure is connected to the first fixed structure via the first connecting member, the second movable structure is connected to the second fixed structure via the second connecting member, and the second movable structure is fixed to the first movable structure; The first fixing structure includes a first area and a second area, the thickness of the first area is smaller than that of the second area, the second fixing structure includes a third area and a fourth area, the thickness of the third area is smaller than that of the fourth area, the first area is fixedly connected to the third area, the third area is located above the first area, and the second area and the fourth area do not overlap in a direction perpendicular to the substrate; The driving structure is located between the first fixed structure and the first movable structure, and / or the driving structure is located between the second fixed structure and the second movable structure, and the driving structure is used to drive the first movable structure and the second movable structure to move.

2. The driving device according to claim 1, characterized in that The first movable structure is a movable platform, the second movable structure is a movable frame, and the driving device further includes an image sensor, which is fixed on the first movable structure and located inside the second movable structure.

3. The driving device according to claim 2, characterized in that The first movable structure includes a first cavity, and the image sensor is fixed in the first cavity.

4. The driving device according to claim 1, characterized in that The second movable structure is a movable platform, the first movable structure is a movable platform or a movable frame, and the driving device further includes an image sensor, which is fixed on the second movable structure.

5. The driving device according to claim 4, characterized in that The second movable structure includes a second cavity, and the image sensor is fixed in the second cavity.

6. The driving device according to any one of claims 2 to 5, characterized in that The substrate is electrically connected to the first fixed structure, the image sensor is electrically connected to the first movable structure, and the first movable structure is electrically connected to the first fixed structure via the first connecting member.

7. The driving device according to any one of claims 2 to 5, characterized in that The substrate is electrically connected to the second fixed structure, the image sensor is electrically connected to the second movable structure, and the second movable structure is electrically connected to the second fixed structure via the second connecting member.

8. The driving device according to any one of claims 1 to 5, characterized in that The driving structure includes a first driving comb tooth and a second driving comb tooth, and the first connecting member includes a first cantilever beam and a second cantilever beam; The first end of the first movable structure is connected to the first fixed structure via the first cantilever beam, and the second end of the first movable structure is connected to the first fixed structure via the second cantilever beam. The first end and the second end of the first movable structure are two ends of the first movable structure in the first axial direction. The first drive comb teeth include first fixed comb teeth and first movable comb teeth, the first fixed comb teeth and the first movable comb teeth are staggered, the first movable comb teeth are connected to the first end of the first movable structure, and the first fixed comb teeth are connected to the first fixed structure. The second drive comb teeth include second fixed comb teeth and second movable comb teeth, the second fixed comb teeth and the second movable comb teeth are staggered, the second movable comb teeth are connected to the second end of the first movable structure, and the second fixed comb teeth are connected to the first fixed structure. The first drive comb teeth and the second drive comb teeth are used to drive the first movable structure and the second movable structure to move in the first axial direction.

9. The driving device according to any one of claims 1 to 5, characterized in that The driving structure further includes a third driving comb tooth and a fourth driving comb tooth, and the second connecting member includes a third cantilever beam and a fourth cantilever beam; The first end of the second movable structure is connected to the second fixed structure via the third cantilever beam, and the second end of the second movable structure is connected to the second fixed structure via the fourth cantilever beam. The first end and the second end of the second movable structure are two ends of the second movable structure in the second axial direction. The third drive comb teeth include third fixed comb teeth and third movable comb teeth, the third fixed comb teeth and the third movable comb teeth are arranged alternately, the third movable comb teeth are connected to the first end of the second movable structure, and the third fixed comb teeth are connected to the second fixed structure. The fourth drive comb teeth include fourth fixed comb teeth and fourth movable comb teeth, the fourth fixed comb teeth and the fourth movable comb teeth are arranged alternately, the fourth movable comb teeth are connected to the second end of the second movable structure, and the fourth fixed comb teeth are connected to the second fixed structure. The third drive comb teeth and the fourth drive comb teeth are used to drive the first movable structure and the second movable structure to move in the second axial direction.

10. The driving device according to any one of claims 1 to 5, characterized in that A first stop structure is formed on the first fixed structure, and a second stop structure is formed on the first movable structure. The first stop structure and the second stop structure are used to stop the first movable structure and the second movable structure in a plane parallel to the first movable structure.

11. The driving device according to any one of claims 1 to 5, characterized in that A third stop structure is formed on the second fixed structure, and a fourth stop structure is formed on the second movable structure. The third stop structure and the fourth stop structure are used to stop the first movable structure and the second movable structure in a plane parallel to the second movable structure.

12. The driving device according to any one of claims 1 to 5, characterized in that A fifth stopping structure is formed on the first movable structure, and a sixth stopping structure is formed on the second fixed structure. The fifth stopping structure and the sixth stopping structure are used to stop the first movable structure and the second movable structure in a direction perpendicular to the base.

13. The driving device according to any one of claims 1 to 5, characterized in that A seventh stopping structure is formed on the first fixed structure, and an eighth stopping structure is formed on the second movable structure. The seventh stopping structure and the eighth stopping structure are used to stop the first movable structure and the second movable structure in a direction perpendicular to the base.

14. The driving device according to any one of claims 1 to 5, characterized in that The base is provided with a boss or a through hole.

15. The driving device according to any one of claims 1 to 5, characterized in that The first fixed structure is a first fixed frame, the first movable structure is located inside the first fixed frame, the second fixed structure is a second fixed frame, and the second movable structure is located inside the second fixed frame.

16. The driving device according to claim 1, characterized in that The first movable structure is a first movable frame, the first fixed structure is located inside the first movable structure, the second movable structure is a second movable frame, and the second fixed structure is located inside the second movable structure.

17. The driving device according to claim 16, characterized in that The driving device further includes an image sensor, which is fixed on the second movable structure.

18. The driving device according to any one of claims 1 to 5, characterized in that The substrate is a printed circuit board PCB.

19. An anti-shake imaging device, characterized in that: comprising a controller and a driving device according to any one of claims 1 to 18, wherein the controller is electrically connected to the driving device, and the driving device comprises an image sensor; The controller is used to output a control signal to the driving device to control the driving device to drive the image sensor to move.

20. A terminal, characterized in that: The device comprises a processor, a memory, and the anti-shake imaging device as described in claim 19, wherein the processor, the memory, and the anti-shake imaging device are interconnected via a bus, the memory is used to store programs and instructions, and the processor is used to call the programs and instructions stored in the memory to control the anti-shake imaging device.

Images