Anti-shake device, camera device and intelligent terminal

Abstract

The application provides a jitter detection device, which comprises a first detection plate and a second detection plate arranged oppositely, the first detection plate is provided with a first capacitor plate, the second detection plate is provided with a second capacitor plate, the first capacitor plate and the second capacitor plate are arranged oppositely and are separated by a certain gap to form a capacitor structure; when the jitter detection device occurs jitter, the first detection plate moves relative to the second detection plate, which causes the capacitance value of the capacitor structure to change, and the change of the capacitance value is used to determine the jitter parameter of the current jitter. The application also provides an anti-jitter device, a camera device and a smart terminal with the jitter detection device.

Description

Technical Field

[0001] This application belongs to the field of camera technology, and in particular relates to a shake detection device, a shake stabilization device with the shake detection device, a camera device, and a smart terminal. Background Technology

[0002] To improve the image quality captured by video equipment, existing video equipment widely employs image stabilization devices to compensate for motion loss during shooting. Image stabilization devices typically consist of a stator assembly fixed within the video equipment and a mover assembly that can move relative to the stator assembly. The lens assembly or image sensor of the video equipment can be mounted in the mover assembly. During video operation, the image stabilization device detects camera shake and controls its mover assembly to move the lens assembly or image sensor in the opposite direction of the camera shake, thereby compensating for image blur caused by camera shake.

[0003] Because image sensors are typically smaller and lighter than lens assemblies, making them easier to move, an increasing number of camera devices are adopting image stabilization solutions that control the movement of the image sensor via a moving part. This type of solution fixes the lens assembly relative to the stator assembly of the image stabilization device, mounts the image sensor within the moving part of the stabilization device, and typically uses a trace suspension assembly (TSA) to form both mechanical and electrical connections between the stator and moving parts. A TSA generally includes a flexible connecting arm structure and electrical connection structures such as wires or traces mounted on the connecting arm structure. The connecting arm structure forms a mechanical connection between the moving and stator assemblies, while its elasticity ensures that the moving part can move relative to the stator within a certain range. The electrical connection structures form an electrical connection between the stator and moving parts.

[0004] In the aforementioned image stabilization solutions, Hall effect sensors are typically used to detect camera shake and serve as a reference for controlling the movement of the moving component. Specifically, a Hall effect sensor is usually installed in one of the stator or moving component, while a magnet is installed in the other (this magnet can also be used to generate electromagnetic thrust to control the movement of the moving component through electromagnetic induction). When the camera shakes, the moving component moves relative to the stator, causing the Hall effect sensor to move relative to the magnet. The Hall effect sensor then senses the change in the magnetic field, generating a corresponding induced electromotive force (EMF). Based on the magnitude and pattern of this EMF, the amplitude and direction of the camera shake can be determined, allowing for compensatory movement of the moving component.

[0005] However, the above-mentioned technical solutions using Hall elements also have some drawbacks. For example, Hall elements need to generate induced electromotive force based on changes in magnetic field as a detection signal to reflect jitter. The accuracy of this detection method is often not ideal and is easily affected by external electromagnetic fields. Setting Hall elements in camera equipment will also increase manufacturing costs. Hall elements will also occupy more assembly space in camera equipment, which is not conducive to product miniaturization.

[0006] Therefore, it is necessary to provide a shake detection device with a more novel structure, as well as a shake stabilization device, camera equipment, and smart terminal incorporating the shake detection device, in order to solve the aforementioned defects of existing shake stabilization devices. Summary of the Invention

[0007] Based on the aforementioned problems in the prior art, the purpose of this application is to provide a shake detection device with a more novel structure, as well as a shake stabilization device, camera equipment, and smart terminal having the shake detection device, so as to solve the problems of insufficient accuracy, susceptibility to external electromagnetic field interference, the occupation of assembly space by Hall elements, and increased manufacturing costs of existing shake stabilization devices that use Hall elements to detect shake.

[0008] To address the aforementioned problems, one embodiment of this application provides a jitter detection device, comprising a first detection plate and a second detection plate arranged opposite to each other. The first detection plate is provided with a first capacitor plate, and the second detection plate is provided with a second capacitor plate. The first capacitor plate and the second capacitor plate are arranged opposite to each other and separated by a certain gap to form a capacitor structure. When the jitter detection device jitters, the first detection plate moves relative to the second detection plate, causing a change in the capacitance value of the capacitor structure. The change in capacitance value is used to determine the jitter parameters of the current jitter.

[0009] Another embodiment of this application provides a shake-resistant device, including a stator assembly and a mover assembly that are movable relative to each other. The stator assembly includes stator capacitor plates, and the mover assembly includes mover capacitor plates. The stator capacitor plates and the mover capacitor plates are arranged opposite to each other and separated by a certain gap to form a capacitor structure. When the shake-resistant device shakes, the mover assembly moves relative to the stator assembly, causing a change in the capacitance value of the capacitor structure. The change in capacitance value is used to determine the shake parameters of the current shake. Either the stator assembly or the mover assembly further includes a coil assembly, and the other further includes a magnet assembly corresponding to the coil assembly. The coil assembly and the magnet assembly generate a driving force corresponding to the shake parameters to drive the mover assembly to move relative to the stator assembly to compensate for the current shake.

[0010] In some embodiments, the stator assembly further includes a stator frame, the mover assembly further includes a mover circuit board, the stator capacitor plate is disposed on the stator frame and faces the side where the mover circuit board is located; the mover capacitor plate is disposed on the mover circuit board and faces the side where the stator frame is located.

[0011] In some embodiments, there are multiple stator capacitor plates and multiple mover capacitor plates, which are arranged opposite to each other.

[0012] In some embodiments, the plurality of stator capacitor plates are arranged in a centrally symmetrical manner with respect to the center of the stator outer frame, and the plurality of mover capacitor plates are arranged in a centrally symmetrical manner with respect to the center of the mover circuit board.

[0013] In some embodiments, the stator frame further includes a first stator insulating layer, a stator circuit layer, a second stator insulating layer, a stator electromagnetic shielding layer, a third stator insulating layer, and a stator ink layer; the first stator insulating layer, the stator circuit layer, the second stator insulating layer, the stator electromagnetic shielding layer, and the third stator insulating layer are stacked sequentially, the stator capacitor plates and the stator ink layer are formed on the outer surface of the third stator insulating layer, and the stator ink layer surrounds the stator capacitor plates.

[0014] In some embodiments, the mover circuit board further includes a first mover insulating layer, a first mover circuit layer, a second mover insulating layer, a second mover circuit layer, a third mover insulating layer, and a mover ink layer; the first mover insulating layer, the first mover circuit layer, the second mover insulating layer, the second mover circuit layer, and the third mover insulating layer are stacked sequentially, the mover capacitor plate and the mover ink layer are formed on the outer surface of the third mover insulating layer, and the mover ink layer surrounds the mover capacitor plate; a hollow anti-interference area is formed in the region of the second mover circuit layer opposite to the mover capacitor plate.

[0015] In some embodiments, the mover circuit board further includes a first mover insulating layer, a first mover circuit layer, a second mover insulating layer, a mover electromagnetic shielding layer, a third mover insulating layer, and a mover ink layer; the first mover insulating layer, the first mover circuit layer, the second mover insulating layer, the mover electromagnetic shielding layer, and the third mover insulating layer are stacked sequentially, the mover capacitor plate and the mover ink layer are formed on the outer surface of the third mover insulating layer, and the mover ink layer surrounds the mover capacitor plate.

[0016] Another embodiment of this application provides a camera device, including a lens assembly and the image stabilization device as described above, wherein the lens assembly is fixedly connected to the stator assembly.

[0017] Another embodiment of this application provides a smart terminal, including the camera device described above.

[0018] Compared to existing technologies, the shake detection device, image stabilization device, camera equipment, and smart terminal provided by the preferred embodiments of this application have many beneficial effects. Specifically, the shake detection device, image stabilization device, camera equipment, and smart terminal provided by the preferred embodiments of this application have stator capacitor plates and mover capacitor plates respectively provided on the stator assembly and mover assembly, forming a capacitor structure. When the camera equipment with the image stabilization device shakes, the shake parameters are determined based on the change in capacitance value of the capacitor structure. Based on the determined shake parameters, electromagnetic thrust is generated by the electromagnetic induction of the coil assembly and magnet assembly to drive the mover assembly to move relative to the lens assembly, thereby compensating for the shake of the camera equipment and achieving optical image stabilization. Compared to existing technologies that use Hall effect sensors to detect camera shake, the image stabilization device provided by the above embodiments can achieve higher detection accuracy. This is because the capacitance detection accuracy of a capacitor structure is generally higher than that of a Hall effect chip for detecting magnetic fields, and the capacitor structure is also less susceptible to external electromagnetic interference compared to the Hall effect chip. Furthermore, the image stabilization device provided by the above embodiments integrates the stator capacitor plate and the mover capacitor plate as part of the stator frame and the mover circuit board, respectively, eliminating the need for dedicated assembly space and virtually reducing manufacturing costs. Compared to existing technologies using Hall effect sensors, this method is more cost-effective and facilitates product miniaturization. Specifically, the stator capacitor plate and the mover capacitor plate are formed on the opposing surfaces of the parallel stator frame and the mover circuit board, respectively, separated by an assembly table, with the air in the gap serving as the dielectric for the capacitor structure. This structural design eliminates the need for any vertical components (i.e., perpendicular to the stator frame and the mover circuit board or forming a large angle), minimizing the overall thickness of the image stabilization device and eliminating the need for a dedicated dielectric, further reducing costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a longitudinal cross-sectional schematic diagram of a shake-stabilizing device provided in a preferred embodiment of this application.

[0021] Figure 2 yes Figure 1 The diagram shows an exploded view of the anti-shake device.

[0022] Figure 3 yes Figure 1 The diagram shows a planar structure of one side of the stator sensing surface after the stator frame and connecting components of the anti-shake device are connected.

[0023] Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the stator frame of the anti-shake device in the area where the stator capacitor plates are located.

[0024] Figure 5 yes Figure 1 A schematic diagram of the planar structure of the moving sensor side of the moving circuit board of the anti-shake device shown.

[0025] Figure 6 yes Figure 1 A cross-sectional view of the region where the moving capacitor plate is located in the first embodiment of the shake-stabilizing device's moving circuit board.

[0026] Figure 7 yes Figure 1 A cross-sectional view of the region where the moving capacitor plate is located, representing a second embodiment of the shake-stabilizing device's moving circuit board.

[0027] Figure 8 yes Figure 1 The diagram shows the structure of the anti-shake device, where the stator frame, connecting components, and mover circuit board are assembled together to form a shake detection capacitor.

[0028] Figure 9 yes Figure 8 A structural breakdown diagram from a first-person perspective.

[0029] Figure 10 yes Figure 8 A structural breakdown diagram from a second-person perspective. Detailed Implementation

[0030] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this application. Based on the description of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0031] The main purpose of this application is to provide a more novel image stabilization device in terms of structure and working principle, as well as corresponding camera equipment and smart terminals, to solve the problems caused by the use of Hall elements to detect shake in existing image stabilization devices, such as the detection method having insufficient accuracy and being susceptible to external electromagnetic interference, high manufacturing cost, and large assembly space required.

[0032] A preferred embodiment of this application provides an image stabilization device used in a camera device. When the camera device is operating, the image stabilization device can detect camera shake and accordingly move the image sensor in the opposite direction of the camera shake, thereby compensating for image blur caused by camera shake.

[0033] Please refer to the following first. Figure 1 and Figure 2 The image stabilization device includes a base frame 1, a stator outer frame 2, a connecting assembly 3, a mover circuit board 4, an image sensor 5, a coil 6, a filter assembly 7, a magnet assembly 8, and a cover 9. The image sensor 5 and the filter assembly 7 are housed within the mover assembly (described in detail below) of the image stabilization device. The stator assembly (described in detail below) can be fixed to an existing lens assembly (not shown in the figure). The drive module, consisting of the coil 6 and the magnet assembly 8, can drive the mover assembly to move relative to the stator assembly in a preset manner to adjust the relative position between the lens assembly and the image sensor 5, thereby achieving optical image stabilization (OIS).

[0034] The base frame 1 can be a rectangular flat frame, made of materials such as metal, ceramic, or plastic. In this embodiment, it is preferably made of steel sheet, which helps to improve the overall structural strength. In this embodiment, protruding side ears 10 can also be provided on opposite sides of the base frame 1 to provide auxiliary connection and positioning when assembling the base frame 1 with other components of the anti-shake device.

[0035] The stator frame 2 includes a stator frame body 21 and a lead-out portion 22. In this embodiment, the stator frame body 21 is preferably a rigid printed circuit board (PCB), which can be a rectangular flat plate with dimensions substantially corresponding to the bottom frame 1. It serves as a port for providing electrical connections to other electronic components inside the camera device. The lead-out portion 22 is a strip-shaped flat plate connected to the outside of the stator frame body 21, preferably a flexible printed circuit board (FPC), and more preferably, it should be elastic. The stator frame body 21 and the electronic components electrically connected to it can establish electrical connections with the outside world through the lead-out portion 22. The outside world can refer to smartphones, smart wearable devices, or other similar hardware environments. In other embodiments, the stator frame 2 can also be entirely made of FPC, or entirely made of rigid PCB or other rigid circuit board materials.

[0036] The connecting assembly 3 includes a connecting plate 30 and multiple connecting arms 31. The connecting plate 30 can be a rectangular circuit board, preferably a rigid PCB, housed in the center of the stator outer frame body 21. The connecting arms 31 connect the connecting plate 30 and the stator outer frame body 21, and the connecting arms 31 are elastic. In this embodiment, the connecting arms 31 are preferably made of a conductive elastic material, such as metal or conductive rubber, which can be used to simultaneously establish a mechanical connection and an electrical connection between the connecting plate 30 and the stator outer frame 2. When the connecting plate 30 tends to move relative to the stator outer frame 2 under the action of an external force, the connecting arms 31 can deform based on their own elasticity, thereby allowing the connecting plate 30 to move relative to the stator outer frame 2; when the external force is removed, the connecting arms 31 can return to their initial state based on their own elasticity, driving the connecting plate 30 to reset. In this embodiment, the stator frame 2 and the connecting assembly 3 can be formed by processing a whole PCB covered with a metal connection layer. For example, most of the material in the middle ring area of ​​the PCB can be removed by existing techniques such as etching, leaving only a part of the metal connection layer to form the connecting arm 31; the remaining outer area of ​​the PCB is formed as the stator frame 2, and the remaining inner area is formed as the connecting plate 30.

[0037] In this embodiment, each connecting arm 31 is preferably designed with a tortuous structure to increase the range of elastic deformation achievable under external force. Please refer to [further details omitted]. Figure 3Specifically, in this embodiment, there are four connecting arms 31, which are respectively connected between the four edges of the connecting plate 30 and the stator outer frame body 21. Preferably, each connecting arm 31 extends from the edge of the connecting plate 30 connected to it, then bends around a corner of the connecting plate 30, extends a certain distance along the next edge of the connecting plate 30, and finally bends to connect with the inner side of the stator outer frame body 21. More preferably, each connecting arm 31 includes multiple parallel elastic suspension wires 310; the suspension wires 310 can be elastic metal wires, and each suspension wire 310 is designed to form a corresponding bending shape according to the direction of the connecting arm 31 described above.

[0038] Please refer to the following: Figure 4 The stator outer frame body 21 has a first base surface 21a and a stator sensing surface 21b disposed opposite to each other, and preferably includes a first stator insulating layer 211, a stator circuit layer 212, a second stator insulating layer 213, a stator electromagnetic shielding layer 214, a third stator insulating layer 215, stator capacitor plates 216, and a stator ink layer 217. The first stator insulating layer 211, the second stator insulating layer 213, and the third stator insulating layer 215 can be formed of polyimide (PI) adhesive; the stator circuit layer 212 and the stator capacitor plates 216 can be formed of metal, such as copper; the stator electromagnetic shielding layer 214 can be formed of an electromagnetic interference (EMI) shielding film to prevent the current generated by the stator circuit layer 212 during operation from interfering with the capacitance distribution on the stator capacitor plates 216; the stator ink layer 217 is formed of an insulating ink material to insulate the edges of the stator capacitor plates 216.

[0039] Structurally, the first stator insulating layer 211, stator circuit layer 212, second stator insulating layer 213, stator electromagnetic shielding layer 214, and third stator insulating layer 215 are sequentially stacked along the direction from the first base surface 21a to the stator sensing surface 21b. The stator capacitor plate 216 and stator ink layer 217 are both formed on the outer surface of the third stator insulating layer 215, that is, exposed from the stator sensing surface 21b. The stator capacitor plate 216 is formed in at least one predetermined stator capacitor region on the stator sensing surface 21b. Specifically, it can be a pad formed by, for example, exposed copper plating. The stator ink layer 217 at least surrounds the stator capacitor plate 216, and can also cover other areas outside the stator frame 21 that require insulation. Preferably, there are multiple stator capacitor plates 216, and... Figure 3 As shown, the multiple stator capacitor plates 216 are preferably arranged in a centrally symmetrical manner about the center of the stator outer frame 2.

[0040] Please refer to the following: Figure 5The mover circuit board 4 can be a PCB, FPC, etc., and its shape can be a rectangular plate. The mover circuit board 4 has a mover sensing surface 4a and a second base surface 4b arranged opposite each other. The middle part of the mover sensing surface 4a is partially raised to form a mounting platform 40. The mounting platform 40 is used to fit with the connecting plate 30, so that the mover circuit board 4 can establish a mechanical connection and an electrical connection with the stator outer frame 2 through the mounting platform 40 and the connecting assembly 3. In this embodiment, the thickness of the mounting platform 40 is greater than the thickness of the rest of the mover circuit board 4. Thus, when the mounting platform 40 is fitted and connected with the connecting plate 30, the rest of the mover circuit board 4 will be separated from the connecting plate 30 and the stator outer frame 2 by a certain gap.

[0041] Please refer to the following: Figure 6 In one specific embodiment, the mover circuit board 4 preferably includes a first mover insulating layer 41, a first mover circuit layer 42, a second mover insulating layer 43, a second mover circuit layer 44, a third mover insulating layer 45, a mover capacitor plate 46, and a mover ink layer 47. The first mover insulating layer 41, the second mover insulating layer 43, and the third mover insulating layer 45 may be formed of polyimide (PI) adhesive; the first mover circuit layer 42, the second mover circuit layer 44, and the mover capacitor plate 46 may be formed of metal, such as copper; and the mover ink layer 47 is formed of an insulating ink material to insulate the edges of the mover capacitor plate 46. In terms of structure, the first mover insulating layer 41, the first mover circuit layer 42, the second mover insulating layer 43, the second mover circuit layer 44, and the third mover insulating layer 45 are stacked sequentially in the direction from the second base surface 4b to the mover sensing surface 4a. The mover capacitor plate 46 and the mover ink layer 47 are formed on the outer surface of the third mover insulating layer 45, that is, exposed from the mover sensing surface 4a. The mover capacitor plate 46 is formed in at least one predetermined mover capacitor area on the mover sensing surface 4a. Specifically, it can be a pad formed by, for example, exposed copper plating. The mover ink layer 47 surrounds at least the mover capacitor plate 46, and can also cover other areas outside the mover circuit board 4 that need insulation.

[0042] In this embodiment, the moving capacitor region should be located on the moving sensing surface 4a in an area outside the assembly table 40 to ensure that when the assembly table 40 is attached and connected to the connecting plate 30, the stator capacitor region and the moving capacitor region can be separated by a predetermined gap through the assembly table 40. The number and position of the moving capacitor plates 46 should correspond to the aforementioned stator capacitor plates 21, so that the moving capacitor plates 4 can be aligned with the corresponding stator capacitor plates 21 through the gap between the connecting plate 30 and the stator outer frame 2. In this embodiment, the number of moving capacitor plates 46 is preferably multiple, and the multiple moving capacitor plates 4 are preferably arranged in a centrally symmetrical manner about the center of the moving circuit board 4.

[0043] exist Figure 6 In the illustrated embodiment, a hollowed-out anti-interference region 441 is preferably formed in the region of the second moving capacitor layer 44 opposite the moving capacitor plate 46. This anti-interference region 441 can be formed by removing conductive material, such as copper, from the region of the second moving capacitor layer 44 opposite the moving capacitor plate 46 using existing techniques such as etching. When the moving capacitor plate 46 is used to form a capacitor, the anti-interference region 441 can prevent the current generated by the second moving capacitor layer 44 during operation from flowing near the moving capacitor plate 46, thus preventing the current from interfering with the charge distribution on the moving capacitor plate 46. In some embodiments, a moving ink layer 47 or other insulating material may also be filled into the anti-interference region 441.

[0044] Please see Figure 7 In another specific embodiment, the moving circuit board 4 preferably includes a component that is compatible with... Figure 6 The first mover insulating layer 41, the first mover circuit layer 42, the second mover insulating layer 43, the third mover insulating layer 45, the mover capacitor plate 46, and the mover ink layer 47 are the same as those in the specific embodiment shown. Figure 6 The difference in the specific implementation shown lies in the use of a mover electromagnetic shielding layer 48 disposed between the second mover insulating layer 43 and the third mover insulating layer 45, replacing the second mover circuit layer 44. The mover electromagnetic shielding layer 48 can be formed of an electromagnetic interference (EMI) shielding film. Since it can prevent the current generated by the second mover circuit layer 44 during operation from interfering with the charge distribution on the mover capacitor plate 46, there is no need to provide a hollowed-out anti-interference area.

[0045] The image sensor 5 is flat, preferably rectangular, and can be mounted on the second base surface 4b of the moving circuit board 4 using existing technologies and electrically connected to the moving circuit board. It can be used to process the electronic signals generated by the filter assembly 7. The image sensor 5 can include various existing image sensors for imaging, such as optical image sensors, infrared image sensors, etc., and is used to receive visible and invisible optical signals collected by the lens assembly and convert them into electronic signals. The moving circuit board 4 is electrically connected to the image sensor 5 and is used to process the electronic signals transmitted by the image sensor 5. In this embodiment, the specific structural features and working principle of the image sensor 5 can be referred to in the prior art, and will not be elaborated here.

[0046] The coil assembly 6 in this embodiment includes a coil 61, which is preferably a strip coil and can be arranged on the moving part circuit board 4 near its edge, receiving power from the moving part circuit board 4. In this embodiment, the number of coils 61 is preferably multiple, for example, four. In other embodiments, the coil assembly 6 may also be an integrated square-shaped coil, arranged parallel to the moving part circuit board 4.

[0047] The filter assembly 7 may include a filter 70 and a bracket 72. The bracket 72 may be a rectangular frame, and its overall shape and size correspond to the moving circuit board 4, allowing the bracket 72 to be mounted parallel to the moving circuit board 4 on one side of its second base surface 4b. The shape and size of the internal opening of the bracket 72 are adapted to the shape of the filter 70, allowing the filter 70 to be installed inside the bracket 72. In some embodiments, the moving circuit board 4 may have its second base surface 4b partially hollowed out to form a recessed fitting portion, into which the image sensor 5, coil 6, and filter assembly 7 can be embedded to further reduce the overall height.

[0048] The magnet assembly 8 in this embodiment includes magnets 81, which are preferably bar magnets, and their number and distribution correspond to those of the coil 61. Preferably, there are multiple magnets 81, such as four. When the coil assembly 6 is energized, it can cooperate with the corresponding magnets 81 to generate electromagnetic thrust based on electromagnetic induction. This electromagnetic thrust drives the mover assembly to move relative to the stator assembly in a preset manner to achieve optical image stabilization. The specific assembly method and operating principle are detailed below.

[0049] The cover 9 has a top plate 91 that is roughly rectangular and flat, and four side plates 92 that are roughly rectangular and flat. The top plate 91 has a lens opening 93 in the center for the lens assembly to extend from it. The four side plates 92 are perpendicularly connected to the top plate 91 at the edge of the same surface of the top plate 91, and are joined end-to-end to form a rectangular frame, making the overall structure of the cover 9 a square box with an open bottom. The shape and size of the cover 9 correspond to the bottom frame 1, and it can be fixed to the bottom frame 1 by the side plates 92, thus sealing the bottom opening of the cover 9 with the bottom frame 1. A magnet 81 can be fixedly installed inside the cover 9.

[0050] When assembling the aforementioned image stabilization device, the moving circuit board 4, image sensor 5, coil 6, and filter assembly 7 are arranged as described above to form the moving component of the image stabilization device; the bottom frame 1, stator outer frame 2, magnet assembly 8, and cover 9 are arranged as the stator component of the image stabilization device. According to the above structural design, the stator capacitor plate 216 and the moving capacitor plate 46 in the image stabilization device are aligned with each other, and a certain gap is separated between them by the assembly table 40. During operation, the stator capacitor plate 216 and the moving capacitor plate 46 can obtain operating voltage from the stator outer frame 2 and the moving circuit board 4, respectively, thus forming a capacitor structure with each pair of corresponding stator capacitor plates 216 and moving capacitor plates 46. The stator capacitor plate 216 and the moving capacitor plate 46 serve as the two plates of the capacitor, while the air in the gap between them acts as the dielectric of the capacitor. When the camera device equipped with the aforementioned image stabilization device shakes, the stator assembly and the lens module fixed to it move along with the overall shaking, while the moving assembly tends to remain in its initial position due to inertia. At this time, the connecting arm 31, based on its own elasticity, allows the moving assembly and the connecting plate 30 fixed to it to move relative to the stator assembly. This changes the relative position between the moving and stator assemblies, causing at least one of the spacing and overlap area between the corresponding stator capacitor plate 216 and the moving capacitor plate 46 to change, thereby changing the capacitance value of the capacitor structure formed by the stator capacitor plate 216 and the moving capacitor plate 46. Based on the trend and magnitude of this capacitance value change, relevant shaking parameters, such as direction and amplitude, can be determined, serving as the basis for controlling the movement of the moving assembly for optical compensation. The specific methods for obtaining the capacitance value of the capacitor structure formed by the stator and moving assemblies, and the specific calculation methods for determining the shaking parameters based on the change in capacitance value, can refer to existing technologies and will not be elaborated here.

[0051] After detecting the direction and amplitude of the shake based on the above principle, electromagnetic thrust can be generated through the electromagnetic induction of coil assembly 6 and magnet assembly 8, thereby achieving optical image stabilization. Specifically, according to the aforementioned structural design, the position of magnet 81 in the stator assembly corresponds to coil 61 in the mover assembly. When coil 61 is energized, electromagnetic induction is generated in the magnetic field of magnet 81, resulting in an electromagnetic thrust that drives coil 61 to move. The connecting arm 31, based on its own elasticity, allows coil 61 to move the entire mover assembly and connecting plate 30 relative to the stator assembly under the drive of electromagnetic thrust. Thus, when the image stabilization device fixes the lens assembly through its cover 9 to form a camera device, the lens assembly and stator assembly are fixed to each other, while the mover assembly can move relative to the lens assembly under the drive of electromagnetic thrust, adjusting the relative position between the image sensor 5 and filter assembly 7 in the mover assembly and the lens assembly 100. Therefore, when the camera shakes, after determining the shake parameters according to the aforementioned capacitance detection principle, a specific optical compensation movement method can be calculated based on the determined shake parameters. Then, through the aforementioned position adjustment method, the moving part assembly can be controlled to move accordingly relative to the lens assembly to optically compensate for the current shake, achieving the purpose of optical image stabilization. As mentioned earlier, in this embodiment, the number of coils 61 and magnets 81 is preferably multiple, arranged around the moving part assembly according to the aforementioned specific arrangement. In this way, when they generate electromagnetic induction, they can generate electromagnetic thrust in multiple directions, driving the coil assembly 6 and the entire moving part assembly to move in a preset direction and amplitude, achieving a more precise image stabilization compensation effect.

[0052] In the image stabilization device provided in the above embodiments, a stator capacitor plate 216 and a mover capacitor plate 46 are respectively provided on the stator assembly and the mover assembly, so that the stator capacitor plate 216 and the mover capacitor plate 46 constitute a capacitor structure. When the camera device equipped with this image stabilization device shakes, the shaking parameters are determined according to the change in capacitance value of the capacitor structure. According to the determined shaking parameters, the electromagnetic thrust generated by the electromagnetic induction of the coil assembly 6 and the magnet assembly 7 can drive the mover assembly to make a corresponding movement relative to the lens assembly, so as to compensate for the shaking of the camera device and achieve the purpose of optical image stabilization. Compared with existing technologies that use Hall elements to detect camera shake, the image stabilization device provided by the above embodiments can achieve higher detection accuracy. This is because the capacitance value detection accuracy of a capacitor structure is usually higher than that of a Hall chip for detecting magnetic fields, and the capacitor structure is also less susceptible to external electromagnetic interference than a Hall chip. Moreover, the image stabilization device provided by the above embodiments forms the stator capacitor plate 216 and the mover capacitor plate 46 as part of the stator frame 2 and the mover circuit board 4, respectively, without requiring dedicated assembly space and with almost no increase in manufacturing cost. Compared with existing technologies that use Hall elements, the cost is lower and more conducive to product miniaturization. Specifically, the stator capacitor plate 216 and the mover capacitor plate 46 are respectively formed on the opposing surfaces of the stator outer frame body 21 and the mover circuit board 4, which are arranged in parallel with each other. A gap is separated between them by the assembly table 40, and the air in the gap is used as the medium of the capacitor structure. With this structural design, the capacitor structure does not need to be provided with any vertical (i.e., perpendicular to the stator outer frame 2 and the mover circuit board 3 or forming a large angle) components, which helps to minimize the overall thickness of the anti-shake device, and also eliminates the need for a special dielectric, which can further save costs.

[0053] In other embodiments, the coil assembly 6 can be formed as part of the stator assembly, for example, the coil assembly 6 can be fixed inside the cover 9; correspondingly, the magnet assembly 8 can be formed as part of the mover assembly, for example, the magnet assembly 8 can be fixed on the filter assembly 7 or the mover circuit board 4. Thus, when the coil assembly 6 is energized, it receives an electromagnetic thrust based on electromagnetic induction, and then the coil assembly 6 pushes the magnet assembly 8 through the reaction force generated by the electromagnetic thrust, thereby driving the mover assembly to move. That is, in the image stabilization device of this application, either the stator assembly or the mover assembly can include the coil assembly 6, and the other can include the magnet assembly 8.

[0054] Another embodiment of this application provides a jitter detection device, which includes at least a first detection plate, a connecting structure, and a second detection plate. The second detection plate is movably connected to the first detection plate via the connecting structure. The first detection plate has at least one first capacitor plate, and the second detection plate has at least one second capacitor plate. The first and second capacitor plates are arranged opposite to each other and separated by a certain gap to form a capacitor structure. When the jitter detection device jitters, the first detection plate moves relative to the second detection plate, causing a change in the capacitance value of the capacitor structure formed by the first and second capacitor plates. This change in capacitance value is used to determine relevant jitter parameters, such as direction and amplitude, which can be used as a basis for optical compensation of the current jitter. It can be understood that the first detection plate, the connecting structure, and the second detection plate can be the stator frame 2, the connecting component 3, and the moving circuit board 4, respectively, in the aforementioned anti-shake device embodiment. These three components are connected together according to the assembly method described in the aforementioned anti-shake device embodiment. The first and second capacitor plates can be the stator capacitor plate 216 and the moving capacitor plate 46, respectively, in the aforementioned anti-shake device embodiment. Obviously, the specific structure and operation mode of the shake detection device can refer to the aforementioned anti-shake device implementation method, and there is no need to repeat it here. Of course, the mover circuit board 4 and the stator outer frame 2 can also be used as the first detection board and the second detection board in this embodiment, respectively, and the mover capacitor plate 46 and the stator capacitor plate 216 can be used as the first capacitor plate and the second capacitor plate in this embodiment, respectively.

[0055] Another embodiment of this application provides a camera device, including a lens assembly (not shown) and the image stabilization device described above. The lens assembly can be a conventional lens assembly, and its base can be fixed to the top plate 91 and / or side plate of the cover using existing technology. The front of the lens assembly can extend through the lens hole 93 of the cover to capture images of the external environment. In use, the camera device can determine the shake parameters through capacitive sensing according to the specific working principle described above, and control the moving part to move relative to the lens assembly according to the determined shake parameters to optically compensate for the current shake, thereby achieving optical image stabilization.

[0056] Another embodiment of this application provides a smart terminal that includes the camera device described above. The smart terminal may be, for example, a smartphone, laptop computer, tablet computer, wearable device, etc.

[0057] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A vibration detection device, characterized in that, The device includes a first detection plate and a second detection plate arranged opposite to each other. The first detection plate has a first capacitor plate, and the second detection plate has a second capacitor plate. The first and second capacitor plates are arranged opposite to each other and separated by a certain gap to form a capacitor structure. When the jitter detection device jitters, the first detection plate moves relative to the second detection plate, causing a change in the capacitance value of the capacitor structure. The change in capacitance value is used to determine the jitter parameters of the current jitter. The first detection plate is the stator outer frame, the second detection plate is the mover circuit board, the first capacitor plate is the stator capacitor plate, and the second capacitor plate is the mover capacitor plate. The stator capacitor plate is located on the stator outer frame and faces the mover circuit board. The moving capacitor plate is disposed on the moving circuit board and faces the side where the stator outer frame is located. There are multiple stator capacitor plates and multiple moving capacitor plates. The multiple stator capacitor plates and multiple moving capacitor plates are arranged opposite to each other. The moving circuit board also includes a first moving insulating layer, a first moving circuit layer, a second moving insulating layer, a moving electromagnetic shielding layer, a third moving insulating layer, and a moving ink layer. The first moving insulating layer, the first moving circuit layer, the second moving insulating layer, the moving electromagnetic shielding layer, and the third moving insulating layer are stacked in sequence. The moving capacitor plate and the moving ink layer are formed on the outer surface of the third moving insulating layer. The moving ink layer surrounds the moving capacitor plate.

2. A shake-stabilizing device, characterized in that, The device includes a stator assembly and a mover assembly that are movable relative to each other. The stator assembly includes stator capacitor plates, and the mover assembly includes mover capacitor plates. The stator capacitor plates and the mover capacitor plates are arranged opposite each other and separated by a certain gap to form a capacitor structure. When the anti-shake device vibrates, the mover assembly moves relative to the stator assembly, causing a change in the capacitance value of the capacitor structure. The change in capacitance value is used to determine the vibration parameters of the current vibration. Either the stator assembly or the mover assembly further includes a coil assembly, and the other includes a magnet assembly corresponding to the coil assembly. The coil assembly and the magnet assembly generate a driving force corresponding to the vibration parameters to drive the mover assembly to move relative to the stator assembly to compensate for the current vibration. The stator assembly also includes a stator frame, and the mover assembly... It also includes a mover circuit board, and the stator capacitor plates are disposed on the stator outer frame and facing the side where the mover circuit board is located; the number of the mover capacitor plates and the number of the mover capacitor plates are both multiple, and the multiple stator capacitor plates and the multiple mover capacitor plates are respectively arranged opposite to each other. The stator outer frame also includes a first stator insulation layer, a stator circuit layer, a second stator insulation layer, a stator electromagnetic shielding layer, a third stator insulation layer, and a stator ink layer; the first stator insulation layer, the stator circuit layer, the second stator insulation layer, the stator electromagnetic shielding layer, and the third stator insulation layer are stacked sequentially, and the stator capacitor plates and the stator ink layer are formed on the outer surface of the third stator insulation layer, and the stator ink layer surrounds the stator capacitor plates.

3. The anti-shake device as described in claim 2, characterized in that, The plurality of stator capacitor plates are arranged in a centrally symmetrical manner with respect to the center of the stator outer frame, and the plurality of mover capacitor plates are arranged in a centrally symmetrical manner with respect to the center of the mover circuit board.

4. The anti-shake device as described in claim 2, characterized in that, The rotor circuit board further includes a first rotor insulating layer, a first rotor circuit layer, a second rotor insulating layer, a second rotor circuit layer, a third rotor insulating layer, and a rotor ink layer; the first rotor insulating layer, the first rotor circuit layer, the second rotor insulating layer, the second rotor circuit layer, and the third rotor insulating layer are stacked sequentially, the rotor capacitor plate and the rotor ink layer are formed on the outer surface of the third rotor insulating layer, and the rotor ink layer surrounds the rotor capacitor plate; a hollow anti-interference area is formed in the area of ​​the second rotor circuit layer opposite to the rotor capacitor plate.

5. The anti-shake device as described in claim 2, characterized in that, The rotor circuit board further includes a first rotor insulating layer, a first rotor circuit layer, a second rotor insulating layer, a rotor electromagnetic shielding layer, a third rotor insulating layer, and a rotor ink layer; the first rotor insulating layer, the first rotor circuit layer, the second rotor insulating layer, the rotor electromagnetic shielding layer, and the third rotor insulating layer are stacked sequentially, the rotor capacitor plate and the rotor ink layer are formed on the outer surface of the third rotor insulating layer, and the rotor ink layer surrounds the rotor capacitor plate.

6. A camera device, characterized in that, It includes a lens assembly and an image stabilization device as described in any one of claims 2-5, wherein the lens assembly is fixedly connected to the stator assembly.

7. A smart terminal, characterized in that, Includes the camera device as described in claim 6.

Images