Optical anti-shake device and electronic equipment

Abstract

The invention provides an optical anti-vibration device and electronic equipment, the optical anti-vibration device comprises a stator, a mover provided with an image sensor chip and an elastic connecting assembly comprising a metal elastic wire, the mover can move relative to the stator, the edge of the mover comprises a plurality of straight edges and corners connected with the straight edges, the elastic connecting assembly is connected with the mover and the stator, and the elastic connecting assembly is connected with the stator. The elastic connection assembly is used for conducting electrical signals of the image sensor chip and providing elastic supporting force for the image sensor chip, and the intersection point of the projection of the metal elastic wire on the mover and the edge of the mover is located on the straight edge. According to the optical anti-vibration device and the electronic equipment, the metal elastic wire is arranged on the straight edge of the mover, so that the metal elastic wire is prevented from being clamped in the gap between the mover and the stator to be broken in the process that the mover moves relative to the stator, the service life of the metal elastic wire is prolonged, and the reliability of the optical anti-vibration device is improved.

Description

Technical Field

[0001] The present invention relates to an optical image stabilization device and an electronic device. Background Art

[0002] When using a camera device to take pictures or record videos, the interference of physiological tremors of the human body and external vibrations on handheld portable intelligent devices is inevitable. Physiological tremors of the human body cannot be overcome through training, and external vibrations vary with the environment, making it inevitable that handheld portable intelligent devices will be affected by the above factors and generate unwanted jitters during picture taking or video recording, resulting in a decline in image quality. The most obvious manifestation is that the images obtained by taking pictures or recording videos are blurred and unclear.

[0003] Existing handheld portable intelligent devices use a lens assembly that can move in the X and Y axis directions within the camera module, so as to achieve the purpose of compensating for physiological tremors of the human body and external vibrations and obtaining high-quality images.

[0004] In the prior art, the optical image stabilization method provided by moving the image sensor chip has a complex structure. In the optical image stabilization scheme of moving the image sensor, the electrical connection between the image sensor and the bottom circuit board has always been one of the problems difficult to solve in this scheme, and a reliable connection method is needed to connect the image sensor with the surrounding circuits. Summary of the Invention

[0005] The purpose of the present invention is to provide an optical image stabilization device and an electronic device, which have the advantage of reliable connection of the elastic connection component.

[0006] To achieve the above purpose, the present invention provides an optical image stabilization device, which includes:

[0007] A stator;

[0008] A mover installed with an image sensor chip, the mover is movable relative to the stator, and the edge of the mover includes a plurality of straight edges and corners connecting the straight edges;

[0009] An elastic connection component including at least one metal wire, a first end of the elastic connection component is connected to the mover, and a second end opposite thereto is connected to the stator. The elastic connection component is used to conduct electrical signals of the image sensor chip and provide an elastic supporting force to the image sensor chip. The intersection point of the projection of the metal wire on the mover and the edge of the mover is located on the straight edge.

[0010] Optionally, the optical image stabilization device includes multiple groups of elastic connection components, and the multiple groups of elastic connection components are evenly distributed on the bottom surface or around the image sensor chip.

[0011] Optionally, the entire mover is rectangular, and the optical image stabilization device includes four sets of the elastic connection components, which are respectively arranged on four sides of the mover.

[0012] Optionally, the elastic connection component includes a plurality of metal elastic wires, and the plurality of metal elastic wires are arranged along the side length direction of the mover.

[0013] Optionally, a bending portion is arranged in the middle of the metal elastic wire, and the bending portions of the plurality of metal elastic wires are symmetrically arranged or parallel to each other.

[0014] Optionally, the mover further includes a limiting plate and a movable circuit board, the image sensor chip is fixedly installed on the movable circuit board, and the limiting plate is arranged around the movable circuit board.

[0015] Optionally, the optical image stabilization device further includes an upper cover, and a first magnetic component is arranged in the upper cover; a supporting portion and a second magnetic component are arranged on the limiting plate, an attractive force exists between the second magnetic component and the first magnetic component in the upper cover, the supporting portion protrudes from the surface of the limiting plate close to the upper cover, and the supporting portion supports between the limiting plate and the upper cover.

[0016] Optionally, an opening or groove matching the shape of the supporting portion is arranged on the limiting plate, and the supporting portion is arranged in the opening or groove of the limiting plate.

[0017] Optionally, the supporting portion is a metal ball or a ceramic ball.

[0018] Optionally, a hard supporting sheet is arranged at the contact portion between the limiting plate and the supporting portion, and the supporting portion contacts the limiting plate through the hard supporting sheet.

[0019] Optionally, the limiting plate includes a limiting plate body, and the limiting plate body and the steel sheet are made by an insert molding process.

[0020] Optionally, the supporting portion contacts the upper cover through the first magnetic component.

[0021] Optionally, the first magnetic component is a magnetic metal.

[0022] Optionally, the upper cover further includes a plastic body, and the first magnetic component and the plastic body are made by an embedded injection molding process.

[0023] Optionally, the optical image stabilization device further includes an upper cover, and a flexible circuit board slot is arranged on the upper cover, and the flexible circuit board slot is electrically connected to the stator.

[0024] Optionally, the optical image stabilization device further includes a bottom plate, which is provided with a recess for accommodating the elastic connection component, and the bottom plate is made by stamping process.

[0025] Optionally, the optical image stabilization device further includes an upper cover, and the upper cover and the bottom plate are connected by welding.

[0026] The present invention also provides an electronic device, which includes the optical image stabilization device as described above.

[0027] In summary, compared with the prior art, the optical image stabilization device and the electronic device provided by the present invention have the following beneficial effects:

[0028] In the optical image stabilization device and the electronic device of the present invention, by arranging the metal spring wire on the straight edge of the mover, when the mover moves relative to the stator, it is avoided that the metal spring wire is stuck in the gap between the mover and the stator, resulting in the breakage of the metal spring wire, which improves the service life of the metal spring wire and the reliability of the optical image stabilization device. Description of the Drawings

[0029] Figure 1 It is an exploded view of the components of the optical image stabilization device of the present invention.

[0030] Figure 2 It is a first perspective schematic diagram of the connection relationship between the elastic connection component, the mover and the stator.

[0031] Figure 3 It is a second perspective schematic diagram of the connection relationship between the elastic connection component, the mover and the stator.

[0032] Figure 4 It is a schematic diagram of the structure of the image sensor chip, the movable circuit board and the limiting plate.

[0033] Figure 5 It is a cross-sectional view of the upper cover of the optical image stabilization device of the present invention.

[0034] Figure 6 It is an exploded schematic diagram of the limiting plate, the supporting part and the second magnetic component.

[0035] Figure 7 It is an installation schematic diagram of the limiting plate, the supporting part and the second magnetic component.

[0036] Figure 8 It is a perspective structure schematic diagram of the upper cover of the optical image stabilization device of the present invention.

[0037] Figure 9 It is a schematic diagram of the structure of the upper cover of the optical image stabilization device of the present invention.

[0038] Figure 10 It is a perspective structure schematic diagram of the bottom plate of the optical image stabilization device of the present invention.

[0039] Figure 11 This is a cross-sectional schematic view of the optical image stabilization device of the present invention.

[0040] Figure 12 This is a structural schematic view of the filter holder.

[0041] Figure 13 This is a schematic view after the image sensor chip, the filter holder, and the filter are installed.

[0042] Description of the reference numerals in the drawings:

[0043] Optical image stabilization device 10

[0044] Stator 100

[0045] Rotor 200

[0046] Image sensor chip 210

[0047] Limit plate 220

[0048] Support part 221

[0049] Second magnetic component 222

[0050] Steel sheet 223

[0051] Groove 224

[0052] Movable circuit board 230

[0053] Elastic connection assembly 300

[0054] Metal spring wire 310

[0055] Upper cover 400

[0056] First magnetic component 410

[0057] Flexible circuit board slot 420

[0058] Light-transmitting opening 430

[0059] Bottom plate 500

[0060] Filter 600

[0061] Filter holder 610 Detailed implementation manners

[0062] The following will combine the accompanying drawings in the embodiments of the present invention Figure 1 ~the accompanying drawings Figure 13 to detail the technical solutions, structural features, achieved objectives, and effects in the embodiments of the present invention.

[0063] It should be noted that the attached drawings are in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the embodiments of the present invention, rather than being used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have any technical substance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that the present invention can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0064] It should be noted that in the present invention, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements clearly listed, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] As Figure 1 shown, the present invention provides an optical image stabilization device 10. The optical image stabilization device 10 includes a stator 100, a rotor 200, and an elastic connection component 300 including at least one metal wire 310 (as Figure 3 shown). An image sensor chip 210 is mounted on the rotor 200. The rotor 200 is movable relative to the stator 100, and there is a gap between the rotor 200 and the stator 100. The two directions of the plane where the rotor 200 and the stator 100 are located are the X and Y directions. When the optical image stabilization device 10 works, the rotor 200 moves relative to the stator 100 in the gap between the rotor 200 and the stator 100 to eliminate the jitter of the image sensor chip 210 in the X direction and the Y direction caused by the outside. In this embodiment, the rotor 200 is rectangular as a whole, and the edge of the rotor 200 includes a plurality of straight edges and corners connecting the straight edges.

[0066] As Figure 2 shown, the elastic connection component 300 includes a first end and a second end arranged opposite to each other. The first end is connected to the rotor 200, and the opposite second end is connected to the stator 100. The elastic connection component 300 is used to conduct the electrical signals of the image sensor chip 210 and provide an elastic supporting force to the image sensor chip 210. As Figure 3As shown, the intersection of the projection of the metal spring wire 310 of the elastic connection component 300 on the mover 200 and the edge of the mover 200 is located on the straight edge. Thus, when the mover 200 moves relative to the stator 100, it can prevent the metal spring wire 310 from getting stuck in the gap between the corner of the mover 200 and the stator 100, which may cause the metal spring wire 310 to break, improving the service life of the metal spring wire 310 and the reliability of the optical image stabilization device 10.

[0067] The mover 200 is rectangular as a whole. The optical image stabilization device 10 includes multiple groups of elastic connection components 300, and the multiple groups of elastic connection components 300 are evenly distributed on the bottom surface or around the image sensor chip 210. Specifically, the optical image stabilization device 10 includes four groups of elastic connection components 300, and the four groups of elastic connection components 300 are respectively arranged on the four sides of the mover 200.

[0068] Each group of elastic connection components 300 includes multiple metal spring wires 310, and the multiple metal spring wires 310 are arranged along the side length direction of the mover 200. A bending portion is provided in the middle of the metal spring wire 310, and the bending angles of the bending portions of each metal spring wire 310 in each elastic connection component 300 are the same.

[0069] In this embodiment, the bending portions of the multiple metal spring wires 310 within the same group of elastic connection components 300 are symmetrically arranged with respect to each other, that is, the multiple metal spring wires 310 in each elastic connection component 300 are divided into left and right parts, and the openings of the bending angles of the metal spring wires 310 on the left and right sides are oppositely arranged. In other embodiments, the bending portions of the multiple metal spring wires 310 may also be arranged parallel to each other.

[0070] As Figure 4 shown, the mover 200 further includes a limiting plate 220 and a movable circuit board 230. The image sensor chip 210 is fixedly installed on the movable circuit board 230, and the limiting plate 220 is arranged around the movable circuit board 230. When the optical image stabilization device 10 works, the movable circuit board 230 is controlled to drive the image sensor chip 210 to move to eliminate the unwanted jitter introduced during the photographing process.

[0071] As Figure 5 shown, the optical image stabilization device 10 further includes an upper cover 400. A first magnetic component 410 is provided inside the upper cover 400. The first magnetic component 410 is a magnetic metal. In this embodiment, the first magnetic component 410 is made of a steel sheet. In other embodiments, the first magnetic component 410 may also be made of iron.

[0072] As Figure 6 and Figure 7As shown in the figure, a support portion 221 and a second magnetic member 222 are provided on the limit plate 220. There is an attractive force between the second magnetic member 222 and the first magnetic member 410 in the upper cover 400. The support portion 221 protrudes from the surface of the limit plate 220 close to the upper cover 400, and the support portion 221 is supported between the limit plate 220 and the upper cover 400. An opening or groove 224 matching the shape of the support portion 221 is provided on the limit plate 220, and the support portion 221 is disposed in the opening or groove 224 of the limit plate 220. When an opening is provided on the limit plate 220 to accommodate the support portion 221, the height of the support portion 221 is higher than the thickness of the limit plate 220, so that the support portion 221 protrudes from the surface of the limit plate 220 close to the upper cover 400; when a groove 224 is provided on the limit plate 220 to accommodate the support portion 221, the height of the support portion 221 is greater than the depth of the groove 224, so that the support portion 221 protrudes from the surface of the limit plate 220 close to the upper cover 400. When the first magnetic member 410 and the second magnetic member 222 are attracted and approach each other, due to the supporting effect of the support portion 221, the surface of the limit plate 220 close to the upper cover 400 will not be completely in contact with the upper cover 400, resulting in excessive frictional resistance between the limit plate 220 and the upper cover 400 when the limit plate 220 drives the image sensor chip 210 on the movable circuit board 230 to move. Instead, the relative movement between the limit plate 220 and the upper cover 400 is realized through the support portion 221, and the frictional resistance during the movement is reduced.

[0073] In this embodiment, the support portion 221 is a metal ball or a ceramic ball. In other embodiments, the support portion 221 can also be a metal roller or a ceramic roller.

[0074] Continue as Figure 6 As shown in the figure, a hard support piece is provided at the contact portion between the limit plate 220 and the support portion 221. In this embodiment, the hard support piece is a steel sheet 223. In other embodiments, the hard support piece can also be made of other hard materials. The support portion 221 contacts the limit plate 220 through the steel sheet 223. When the limit plate 220 moves relative to the upper cover 400, the metal ball serving as the support portion 221 in this embodiment rotates in the groove 224 on the limit plate 220, and the steel sheet 223 is disposed in the opening or groove 224 on the limit plate 220 for accommodating the support portion 221, thereby reducing the frictional resistance between the support portion 221 and the limit plate 220. In addition, compared with the direct friction between the stator 100 and the support portion 221, the hard support piece made of a metal material or other hard materials is more wear-resistant, and the service life of the support portion 221 can be extended by the friction between the hard support piece and the support portion 221.

[0075] The limiting plate 220 includes a limiting plate body. The limiting plate body and the steel sheet 223 are made by an embedded injection molding process. Only one step is required to complete the manufacturing of the limiting plate 220 with the steel sheet 223, reducing the manufacturing process of the limiting plate 220 and improving production efficiency.

[0076] The supporting part 221 contacts the upper cover 400 through the first magnetic component 410. The contact surface between the first magnetic component 410 and the supporting part 221 is a metal surface. When the movable circuit board 230 drives the image sensor chip 210 to move in the X and Y directions, relative movement is generated between the supporting part 221 and the metal sheet-like first magnetic component 410 installed on the upper cover 400 during the movement, reducing frictional losses during the movement process and ensuring the stability of the optical axis.

[0077] The upper cover 400 further includes a plastic body. The first magnetic component 410 and the plastic body are made by an embedded injection molding process. Only one step is required to complete the manufacturing of the first magnetic component 410 and the plastic body of the upper cover 400, reducing the manufacturing process of the upper cover 400 and improving production efficiency.

[0078] As Figure 8 shown, a light-transmitting opening 430 is provided on the upper cover 400 for the image sensor chip 210 to receive external light signals. As Figure 9 shown, a flexible circuit board slot 420 is provided on the upper cover 400. The flexible circuit board slot 420 is electrically connected to the stator 100. The flexible circuit board slot 420 is used to install a flexible circuit board so that the optical image stabilization device is connected to the telescopic focusing motor of the lens through the flexible circuit board for signal transmission. By providing a flexible circuit board on the upper cover 400, the size design of the upper cover 400 is made more flexible, without the need to maintain the same outer dimension as the telescopic focusing motor of the lens, improving the flexibility of the overall design of the upper cover 400 and even the optical image stabilization device 10.

[0079] As Figure 10 and Figure 11 shown, the optical image stabilization device 10 further includes a bottom plate 500. The bottom plate 500 is provided with a recess for accommodating the elastic connection assembly 300. The bottom plate 500 is made by a stamping process. There is no need to first manufacture the bottom plate 500 and then dig out a recess for accommodating the elastic connection assembly 300 on the bottom plate 500 as in the existing manufacturing process of the bottom plate 500. Only one step is required to complete the manufacturing of the bottom plate 500, reducing the manufacturing process of the bottom plate 500, improving production efficiency and simplifying the structure of the bottom plate 500, and reducing the weight of the bottom plate 500.

[0080] In this embodiment, the upper cover 400 and the bottom plate 500 are connected by welding, thereby enhancing the connection strength between the upper cover 400 and the bottom plate 500 and enhancing the reliability of the optical image stabilization device 10.

[0081] In addition, asFigure 11 , Figure 12 and Figure 13 As shown in Figure 11 , Figure 12 and Figure 13 , in the present invention, a filter holder 610 and a filter 600 are further provided on the image sensor chip 210. The filter 600 is mounted on the filter holder 610, and the filter 600 is used to filter out stray light entering the image sensor chip 210, thereby improving the imaging quality of the image sensor chip 210.

[0082] The present invention further provides an electronic device, which includes the optical image stabilization device 10 and a lens as described above. The optical axis of the lens is arranged perpendicular to the photosensitive plane of the image sensor chip 210 of the optical image stabilization device 10 to achieve lens focusing for imaging on the image sensor chip 210.

[0083] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. An optical image stabilization device, characterized in that, The optical image stabilization device includes: A stator; A rotor installed with an image sensor chip, the rotor being movable relative to the stator, and the edge of the rotor including a plurality of straight edges and corners connecting the straight edges; An elastic connection component including at least one metal wire spring, a first end of the elastic connection component being connected to the rotor, and a second end opposite thereto being connected to the stator, the elastic connection component being configured to conduct electrical signals of the image sensor chip and provide an elastic support force to the image sensor chip, and the intersection of the projection of the metal wire spring on the rotor and the edge of the rotor being located on the straight edge.

2. The optical image stabilization device according to claim 1, characterized in that, The optical image stabilization device includes multiple groups of elastic connection components, and the multiple groups of elastic connection components are uniformly distributed on the bottom surface or around the image sensor chip.

3. The optical image stabilization device according to claim 2, characterized in that, The rotor is rectangular as a whole, and the optical image stabilization device includes four groups of the elastic connection components, and the four groups of the elastic connection components are respectively arranged on four sides of the rotor.

4. The optical image stabilization device according to claim 3, wherein The elastic connection component includes multiple metal wire springs, and the multiple metal wire springs are arranged along the side length direction of the rotor.

5. The optical image stabilization device according to claim 4, characterized in that, A bent portion is provided in the middle of the metal wire spring, and the bent portions of the multiple metal wire springs are symmetrically arranged or parallel to each other.

6. The optical image stabilization device according to claim 1, characterized in that, The rotor further includes a limiting plate and a movable circuit board, the image sensor chip being fixedly installed on the movable circuit board, and the limiting plate being disposed around the movable circuit board.

7. The optical image stabilization device according to claim 6, wherein The optical image stabilization device further includes an upper cover, and a first magnetic component is provided inside the upper cover; a support portion and a second magnetic component are provided on the limiting plate, an attractive force exists between the second magnetic component and the first magnetic component inside the upper cover, the support portion protrudes from the surface of the limiting plate close to the upper cover, and the support portion supports between the limiting plate and the upper cover.

8. The optical image stabilization device according to claim 7, wherein, An opening or groove matching the shape of the support portion is provided on the limiting plate, and the support portion is disposed in the opening or groove of the limiting plate.

9. The optical image stabilization device according to claim 8, characterized in that, The support portion is a metal ball or a ceramic ball.

10. The optical image stabilization device according to claim 9, characterized in that, A hard support piece is provided at the contact portion between the limiting plate and the support portion, and the support portion contacts the limiting plate through the hard support piece.

11. The optical image stabilization device according to claim 10, wherein, The limiting plate includes a limiting plate body, and the limiting plate body and the steel sheet are made by an insert molding process.

12. The optical image stabilization device according to claim 7, characterized in that, The support portion contacts the upper cover through the first magnetic component.

13. The optical image stabilization device according to claim 12, wherein, The first magnetic component is a magnetic metal.

14. The optical image stabilization device according to claim 13, wherein The upper cover further includes a plastic body, and the first magnetic component and the plastic body are made by an embedded injection molding process.

15. The optical image stabilization device according to claim 1, wherein, The optical image stabilization device further includes an upper cover, and a flexible circuit board groove is provided on the upper cover, and the flexible circuit board groove is electrically connected to the stator.

16. The optical image stabilization device according to claim 1, characterized in that The optical image stabilization device further includes a bottom plate, and a recessed portion is provided on the bottom plate for accommodating the elastic connection component, and the bottom plate is made by a stamping process.

17. The optical image stabilization device according to claim 16, wherein The optical image stabilization device further includes an upper cover, and the upper cover and the bottom plate are connected by welding.

18. An electronic device, characterized in that, The electronic device includes the optical image stabilization device as claimed in claim 1.

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