Drive mechanism

Abstract

The invention provides a driving mechanism. The driving mechanism comprises a fixed part, a movable part, a driving assembly and a control assembly. The movable part can move relative to the fixed part. The driving assembly is used for driving the movable part to move. The control assembly is used for outputting a control signal to the driving assembly.

Description

Technical Field

[0001] The present disclosure relates to a driving mechanism. Background Art

[0002] With the development of technology, many electronic devices (such as smart phones or digital cameras) now have the function of taking photos or recording videos. These electronic devices are becoming more and more popular and are developing in the direction of convenient and thinner designs to provide users with more choices.

[0003] The aforementioned electronic devices with camera or video recording functions are usually provided with a driving mechanism to drive an optical element (e.g., a lens) to move along an optical axis, thereby achieving the functions of auto focus (AF) or optical image stablization (OIS). Light can pass through the aforementioned optical element to form an image on a photosensitive element. However, the current trend of mobile devices is to have a smaller size and higher durability, so how to effectively reduce the size of the driving mechanism and improve its durability has become an important issue. Summary of the invention

[0004] The purpose of the present disclosure is to provide a driving mechanism to solve at least one of the above problems.

[0005] The embodiment of the present disclosure provides a driving mechanism, including a fixed part, a movable part, a driving component and a control component. The movable part can move relative to the fixed part. The driving component is used to drive the movable part to move. The control component is used to output a control signal to the driving component.

[0006] In some embodiments, the control component includes a fourth operation unit. The fourth operation unit outputs a second judgment information according to a difference information or a first intermediate information and a correction information. The driving component is used to drive the movable part to move in a first dimension or a second dimension. The correction information includes a first correction information and a second correction information, which correspond to the first dimension and the second dimension respectively. The first dimension is different from the second dimension. The first correction information is different from the second correction information.

[0007] In some embodiments, the fourth operation unit selects the corresponding first correction information or second correction information according to a state information and a correction database of correction information. The state information is related to the state of the driving mechanism. The correction database includes different first correction information and second correction information corresponding to different states. The correction database is defined by an external device measurement.

[0008] In some embodiments, the fourth operation unit selects one of the first correction information and the second correction information according to the difference information or the first intermediate information. When the driving mechanism is in a first state, the first correction information is greater than the second correction information, and the first correction information and the second correction information have a first difference. When the driving mechanism is in a second state, the first correction information is greater than the second correction information, and the first correction information and the second correction information have a second difference. The first difference is not equal to the second difference. When the driving mechanism is in a third state, the first correction information is less than the second correction information. When the driving mechanism is in a fourth state, the first correction information is equal to the second correction information.

[0009] In some embodiments, a maximum ratio of the first correction information to the second correction information is greater than 2. The first correction information when the driving mechanism is in the first state is different from the first correction information when the driving mechanism is in the second state. When the driving mechanism is in the first state, the driving mechanism is subjected to a first environmental force. When the driving mechanism is in the second state, the driving mechanism is subjected to a second environmental force. The first environmental force and the second environmental force have different directions relative to the driving mechanism. In the direction of movement of the movable part, the magnitudes of the components of the first environmental force and the second environmental force are different.

[0010] In some embodiments, the drive mechanism further includes an inertial sensor, which is disposed on the fixed portion or the movable portion, and the first dimension is movement along a first axis. The angle between the first environmental force and the first axis is different from the angle between the second environmental force and the first axis. The state information includes the direction of gravity. The state information is provided by the inertial sensor. The state information includes acceleration information of the drive mechanism.

[0011] In some embodiments, the control component further includes a first computing unit, a sensing element, and a second computing unit. The first computing unit is used to compare a target information and a status information to output difference information. The sensing element outputs the status information according to the state of the active part. The second computing unit is used to compare the difference information and an allowable information to output a first judgment information. The target information is provided by a control center.

[0012] In some embodiments, the control component further includes a third operation unit. The third operation unit is used to compare the difference information and a maximum control information to output a first intermediate information to the fourth operation unit. When the difference information falls within the range of the maximum control information, the difference information is the first intermediate information. When the difference information exceeds the range of the maximum control information, a first extreme value of the maximum control information is the first intermediate information.

[0013] In some embodiments, the control component further includes a fifth operation unit, which outputs a driving signal to the driving component according to the first judgment information and the second judgment information. When the difference information is within the range of the allowable information, the driving signal is a stable signal. When the difference information is within the range of the allowable information, the sensing element continuously outputs the status information according to the active part. When the difference information exceeds the range of the allowable information, the fifth operation unit outputs the driving signal according to the second judgment information, and the driving signal at this time is different from the stable signal.

[0014] In some embodiments, the stable signal is 0. When the driving component does not drive the movable part to move, the state of the movable part remains unchanged. When the driving component does not drive the movable part, the movable part can stay at any position in a movable range. The driving mechanism also includes a clamping component, and the movable part can stay at any position in the movable range via the clamping component. The driving component includes a piezoelectric material.

[0015] The beneficial effect of the present invention is that the special relative positions and size relationships of the components disclosed in the present invention can not only make the driving mechanism thinner in a specific direction and smaller as a whole, but also further improve the optical quality of the system (such as shooting quality or depth sensing accuracy, etc.) by matching different optical modules, and further utilize each optical module to achieve a multiple anti-shake system to greatly improve the anti-shake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following will be described in detail with reference to the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not shown in proportion and are only used for illustration. In fact, the size of the elements may be arbitrarily enlarged or reduced to clearly show the features of the present disclosure.

[0017] Figure 1 It is a schematic diagram of a driving mechanism according to some embodiments of the present disclosure.

[0018] Figure 2 This is a schematic diagram of some components of the drive mechanism.

[0019] Figure 3 It is a schematic diagram of the movement of the movable part relative to the fixed part when the control component is used to control the drive component.

[0020] Figure 4 It is a schematic diagram when the driving mechanism is in the first state.

[0021] Figure 5 This is a schematic diagram of the drive mechanism in the second state.

[0022] Figure 6 Schematic diagram of the driving mechanism in the third state.

[0023] Figure 7Schematic diagram of the driving mechanism in the fourth state.

[0024] The reference numerals are as follows:

[0025] 1000: Driving mechanism

[0026] 1100:Fixed part

[0027] 1110: Outer frame

[0028] 1120: Base

[0029] 1200: Activities Department

[0030] 1210: Clamping assembly

[0031] 1300: Drive components

[0032] 1301: Driving force

[0033] 1310: Driving element

[0034] 1320: Stabilizing element

[0035] 1330: Transmission element

[0036] 1400: Control components

[0037] 1401: First computing unit

[0038] 1402: Second computing unit

[0039] 1403: Third computing unit

[0040] 1404: Fourth computing unit

[0041] 1405: Fifth computing unit

[0042] 1411: Target Information

[0043] 1412,1412A,1412B: Current status information

[0044] 1413,1413A,1413B: Difference information

[0045] 1414: Permission information

[0046] 1415: First judgment information

[0047] 1416: First Intermediate Information

[0048] 1417: Second judgment information

[0049] 1418: driving signal

[0050] 1419: Sensing Information

[0051] 1420: Sensing element

[0052] 1500:Guide element

[0053] 1600:Optical Components

[0054] 1900: First Axis

[0055] 1911: The First Environmental Force

[0056] 1912: Second Environmental Force

[0057] 1920: Horizontal plane

[0058] t1,t2: time point DETAILED DESCRIPTION

[0059] Many different implementation methods or examples are disclosed below to implement the different features of the subject matter provided. The following describes specific embodiments of the components and their arrangements to illustrate the present disclosure. Of course, these embodiments are only for illustration and should not be used to limit the scope of the present disclosure. For example, it is mentioned in the specification that the first characteristic component is formed on the second characteristic component, which includes an embodiment in which the first characteristic component and the second characteristic component are in direct contact, and also includes an embodiment in which there are other features between the first characteristic component and the second characteristic component, that is, the first characteristic component and the second characteristic component are not in direct contact with each other.

[0060] In addition, repeated numbers or marks may be used in different embodiments, and these repetitions are only for the purpose of simply and clearly describing the present disclosure, and do not represent a specific relationship between the different embodiments and / or structures discussed. In addition, in the present disclosure, forming, connecting to and / or coupling to another feature component on another feature component may include an embodiment in which the feature component is formed to be in direct contact, and may also include an embodiment in which an additional feature component inserted into the above-mentioned feature component can be formed, so that the above-mentioned feature component may not be in direct contact. In addition, space-related words may be used, such as "vertical", "above", "up", "below", "bottom" and similar words (such as "downwardly", "upwardly", etc.), these space-related words are for the convenience of describing the relationship between one (some) element or feature and another (some) element or feature in the diagram, and these space-related words are intended to cover different directions of the device including the feature.

[0061] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as commonly understood by those skilled in the art to which this disclosure belongs. It is understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the background or context of the relevant technology and the present disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.

[0062] Furthermore, the ordinal numbers used in the specification and claims, such as "first", "second", etc., to modify the elements of the claims, do not themselves imply or represent any previous ordinal number of the requested element, nor do they represent the order of one requested element and another requested element, or the order in the manufacturing method. The use of multiple ordinals is only used to clearly distinguish a requested element with a certain name from another requested element with the same name.

[0063] In addition, in some embodiments of the present disclosure, terms such as "connection" and "interconnection" may refer to two structures being in direct contact with each other, or two structures not being in direct contact with each other, and other structures being disposed between the two structures, unless otherwise specified. Such terms may also include situations where both structures are movable or both structures are fixed.

[0064] The present disclosure provides a driving mechanism for driving an optical element to move. For example, Figure 1 FIG. 1 is a schematic diagram of a driving mechanism 1000 according to some embodiments of the present disclosure. Figure 1 As shown, the driving mechanism 1000 may mainly include a fixed part 1100 (including an outer frame 1110 and a base 1120), a movable part 1200, a clamping assembly 1210, a driving assembly 1300 (including a driving element 1310, a stabilizing element 1320, and a transmission element 1330), a control assembly 1400, and a guiding element 1500, for driving the optical element 1600 to move.

[0065] In some embodiments, the optical element 1600 may be, for example, a lens, a mirror, a prism, a reflective polished surface, an optical coating, a beam splitter, an aperture, a liquid lens, an image sensor, a camera module, a ranging module, etc. It should be noted that the definition of optical elements here is not limited to elements related to visible light, and elements related to invisible light (such as infrared light, ultraviolet light) may also be included in the present invention.

[0066] In some embodiments, the outer frame 1110 and the base 1120 can be combined to form a housing of the driving mechanism 1000, and other components of the driving mechanism 1000 can be disposed in the housing to protect the other components. The optical element 1600 can be disposed on the movable portion 1200, and the movable portion 1200 can be movably connected to the fixed portion 1100 through the driving assembly 1300 and the guiding element 1500.

[0067] In some embodiments, the driving component 1300 can be used to drive the movable portion 1200 to move relative to the fixed portion 1100 on the first axis 1900. In some embodiments, the driving element 1310 can be formed of a piezoelectric material. That is, when an electric field (voltage) is applied to the surface of the driving element 1310, the electric dipole moment of the driving element 1310 will be elongated, and the driving element 1310 will elongate along the direction of the electric field to resist the change. Therefore, electrical energy can be converted into mechanical energy. In some embodiments, an electric field along the first axis 1900 can be applied to the driving element 1310 to change the length of the driving element 1310 along the first axis 1900 (for example, elongate or shorten).

[0068] In some embodiments, one end of the driving element 1310 may be connected to the stabilizing element 1320, and the stabilizing element 1320 may be disposed on the fixed portion 1100 (e.g., the base 1120). The material of the stabilizing element 1320 may include, for example, metal (e.g., iron, copper, etc.) to balance the force applied to the fixed portion 1100 when the driving assembly 1300 is in operation. The transmission element 1330 may be connected to the other end of the driving element 1310 so that when the driving element 1310 is deformed, its energy is transmitted to the movable portion 1200 through the transmission element 1330. The transmission element 1330 may include a material with a smooth surface, for example, may include carbon (e.g., graphite), but is not limited thereto.

[0069] In some embodiments, the clamping assembly 1210 may be, for example, a spring, which may be fixed on the movable portion 1200, and may apply pressure to the transmission element 1330 in a pressure direction so that the transmission element 1330 is closely disposed on the movable portion 1200. The transmission element 1330 is movably disposed on the clamping assembly 1210, for example, by frictional contact. If the force applied between the clamping assembly 1210 and the transmission element 1330 is greater than the maximum static friction force between the clamping assembly 1210 and the transmission element 1330 when the driving element 1310 is deformed, the transmission element 1330 may move relative to the clamping assembly 1210 in the extension direction of the transmission element 1330, for example, may move along the first axis 1900, thereby driving the movable portion 1200 to move relative to the fixed portion 1100 along the first axis 1900. On the contrary, if the force applied between the clamping component 1210 and the transmission component 1330 when the driving component 1310 is deformed is smaller than the maximum static friction force between the clamping component 1210 and the transmission component 1330 , no relative movement will occur between the clamping component 1210 and the transmission component 1330 .

[0070] In some embodiments, the driving element 1310 can be repeatedly deformed back and forth to continuously move the movable portion 1200 in a specific direction. For example, a larger current can be passed to make the deformation speed of the driving element 1310 in a specific direction faster, and then a smaller reverse current can be passed to make the deformation speed of the driving element 1310 in the opposite direction slower, so that the driving element 1310 and the clamping assembly 1210 only move relative to each other in this specific direction, and do not move relative to each other in the opposite direction, so as to accumulate the moving distance, so that, for example, the movable portion 1200 can be moved closer to the base 1120 or away from the base 1120 along the first axis.

[0071] In some embodiments, the control component 1400 can be used to control the driving component 1300, and can include various electronic components. In some embodiments, the driving component 1300, the control component 1400, and other external devices can be electrically connected through a circuit board (not shown) disposed on the fixing portion 1100 or a circuit (not shown) embedded in the fixing portion 1100.

[0072] In some embodiments, the guide element 1500 may have a columnar shape and may extend along the first axis 1900 so as to be parallel to the transmission element 1330. In some embodiments, the guide element 1500 may be fixed to one of the fixed portion 1100 and the movable portion 1200 and may move relative to the other to define a movement direction of the movable portion 1200 relative to the fixed portion 1100. In some embodiments, the driving assembly 1300 and the guide element 1500 may be disposed on opposite sides or opposite corners of the movable portion 1200 to balance the forces applied by each element to the movable portion 1200.

[0073] In some embodiments, Figure 2 It is a schematic diagram of some elements of the driving mechanism 1000, in which the driving component 1300 and the control component 1400 are mainly shown. Figure 3 It is a schematic diagram of the stroke of the movable part 1200 relative to the fixed part 1100 when the control component 1400 is used to control the driving component 1300 .

[0074] like Figure 2 and Figure 3 As shown, in some embodiments, the control component 1400 may include a first computing unit 1401 for comparing target information 1411 and current status information 1412, and outputting difference information 1413. In some embodiments, the target information 1411 may include information about the target position of the movable part 1200 relative to the fixed part 1100, and the target information may be provided by a control center. For example, when the driving mechanism 1000 is installed on a mobile phone, the control center may be a processor of the mobile phone itself, and the target information 1411 may be output to the first computing unit 1401 of the control component 1400 through the processor.

[0075] In some embodiments, the control component 1400 further includes a sensing element 1420 for sensing the state of the movable portion 1200, such as the position of the movable portion 1200 relative to the fixed portion 1100, so as to output the aforementioned status information 1412 to the first computing unit 1401. For example, the sensing element 1420 may be disposed on the fixed portion 1100, and a reference element (not shown) may be provided on the movable portion 1200, such as having magnetism, and when the movable portion 1200 moves relative to the fixed portion 1100, the magnetic field of the reference element relative to the sensing element 1420 may change, so that the sensing element 1420 may reach the position of the movable portion 1200 relative to the fixed portion 1100 according to the change, and record it in the status information 1412 to provide to the first computing unit 1401.

[0076] In some embodiments, the sensing element 1420 may include a Hall effect sensor, a magnetoresistance effect sensor (MR Sensor), a giant magnetoresistance effect sensor (GMR Sensor), a tunneling magnetoresistance effect sensor (TMR Sensor), or a fluxgate sensor.

[0077] In some embodiments, the operation of obtaining the difference information 1413 from the target information 1411 and the current information 1412 may include calculating the difference value between the target information 1411 and the current information 1412. For example, the difference information 1413 may be the value obtained by subtracting the current information 1412 from the target information 1411. Then, the first operation unit 1401 provides the difference information 1413 to the second operation unit 1402 and the third operation unit 1403, so that they can perform different operations respectively.

[0078] In some embodiments, Figure 2 , Figure 3 As shown, the second operation unit 1402 can be used to compare the difference information 1413 and the allowable information 1414 to output the first judgment information 1415. In some embodiments, the allowable information 1414 can be a pre-set threshold, and according to whether the difference information 1413 falls within the range of the allowable information 1414, the second operation unit 1402 can output different first judgment information 1415. For example, if the difference information 1413 including the difference between the target position and the current position of the movable part 1200 falls within the range of the allowable information 1414, it is determined that the movable part 1200 has been driven to the desired position. On the contrary, if the difference information 1413 falls outside the range of the allowable information 1414, it is determined that the movable part 1200 has not been driven to the desired position, and this judgment result is recorded in the first judgment information 1415. For example, in Figure 3 At time point t1, the difference between the current information 1412A and the target information 1411 is the difference information 1413A, and the difference information 1413A falls outside the range of the allowable information 1414, then it is determined that the movable part 1200 has not been driven to the desired position, so that the driving can continue. In some embodiments, the ratio of the allowable information 1414 to the target information 1411 may be less than 0.05, but is not limited thereto.

[0079] In some embodiments, the third operation unit 1403 may be used to compare the difference information 1413 and the maximum control information to output the first intermediate information 1416 to the fourth operation unit 1404. When the difference information 1413 falls within the range of the maximum control information, the difference information 1413 is the first intermediate information 1416. When the difference information 1413 exceeds the range of the maximum control information, the first extreme value of the maximum control information is the first intermediate information 1416.

[0080] Specifically, the maximum control information may include information about the maximum stroke of the driving component 1300 during a single operation, and the third operation unit 1403 may be used to control the maximum stroke of the driving component 1300 during a single operation. After accumulating multiple operations, the movable part 1200 may be pushed to the target position. For example, if the difference between the current position of the movable part 1200 and the target position recorded in the difference information 1413 is less than the range of the maximum control information, the third operation unit 1403 may directly output the difference information 1413. If the difference between the current position of the movable part 1200 and the target position recorded in the difference information 1413 is greater than the range of the maximum control information, the third operation unit 1403 will control the stroke of this movement within the maximum stroke range, and the first extreme value is the maximum stroke. In this way, the maximum stroke of a single drive of the driving component 1300 can be controlled.

[0081] Figure 4 is a schematic diagram of the driving mechanism 1000 in the first state. In some embodiments, when the driving mechanism 1000 is in operation, it will be affected by external forces, such as the direction of the driving mechanism 1000, the direction of gravity, the sudden acceleration of the environment, the shaking of the user, etc., so that when the driving component 1300 drives the movable part 1200 along the first axis 1900 to approach the base 1120 and away from the base 1120, the external force on the driving mechanism 1000 will be different. For example, when the first axis 1900 is perpendicular to the horizontal plane 1920, the first environmental force 1911 acting on the driving mechanism 1000 may be parallel to the first axis 1900 and may be oriented in the -Z direction.

[0082] Therefore, when the driving assembly 1300 moves in different directions (e.g., the direction close to or away from the base 1120), the required driving force will be different. For example, the movement of the movable part 1200 away from the base 1120 (+Z direction) on the first axis 1900 can be defined as the first dimension, and the movement of the movable part 1200 close to the base 1120 (-Z direction) can be defined as the second dimension, and the driving assembly 1300 can be used to drive the movable part 1200 to move in the first dimension and the second dimension, and the first dimension is different from the second dimension. In other embodiments, the first dimension and the second dimension may also include movement in other different axial directions, rotation, or different types of movement.

[0083] In some embodiments, the fourth computing unit 1404 can be used to determine the dimension in which the movable part 1200 moves at this time, for example, based on external state information, and different correction information can be selected based on the state information. For example, the state information is related to the state of the driving mechanism 1000, and may include, for example, the acceleration direction of the driving mechanism 1000, the direction of gravity, sudden acceleration of the environment, the movement of the car, the shaking of the user, etc., and the correction information may include first correction information and second correction information, corresponding to the first dimension and the second dimension, respectively. In some embodiments, this state information can be obtained by an inertial sensor (not shown).

[0084] When the movable part 1200 moves in the first dimension, the fourth operation unit 1404 can output the first correction information, and when the movable part 1200 moves in the second dimension, the fourth operation unit 1404 can output the second correction information, and the first correction information and the second correction information are different from each other. Therefore, when moving in different dimensions, different parameters can be used for control, so as to offset the influence of external forces (such as the first environmental force 1911) on the driving mechanism 1000, so as to improve the phenomenon that the steady-state time (Settling time) is too long or the stroke oscillates when the driving mechanism 1000 moves in a specific direction.

[0085] In some embodiments, when the driving mechanism 1000 is in different states, that is, has different state information, the fourth operation unit 1404 can select the appropriate first correction information and the second correction information from the correction database in the correction information. In some embodiments, when the driving mechanism 1000 leaves the factory, an external device can be used to measure the motion state, thereby defining a correction database suitable for the driving mechanism 1000. In this way, the influence of external forces on the driving mechanism 1000 can be balanced.

[0086] For example, when proportional control is used to control the driving component 1300, the first correction information and the second correction information may be proportional gains when the movable part 1200 moves along the first dimension and the second dimension, respectively. However, the present disclosure is not limited thereto. When other methods are used to control the driving component 1300, the first correction information and the second correction information may also represent other control coefficients. In some embodiments, the fourth operation unit 1404 may also select one of the first correction information and the second correction information according to the difference information 1413 or the first intermediate information 1416.

[0087] like Figure 4As shown, when the driving mechanism 1000 is in the first state, for example, when the first axis 1900 extends in the +Z direction and is perpendicular to the horizontal plane 1920, the first correction information is greater than the second correction information, and the first correction information and the second correction information have a first difference. Figure 5 1 is a schematic diagram of the driving mechanism 1000 in the second state, in which the first axis 1900 is neither perpendicular nor parallel to the horizontal plane 1920, but has an inclined angle. At this time, the second environmental force 1912 to which the driving mechanism 1000 is subjected may have an angle 1930 greater than zero with the first axis 1900, and the angle 1930 between the second environmental force 1912 and the first axis 1900 and the angle (for example, 0 degrees) between the first environmental force 1911 and the first axis 1900 are different from each other. The first environmental force 1911 and the second environmental force 1912 may be gravity, for example, and have different directions relative to the driving mechanism 1000, so that in the direction of movement of the movable part 1200, the magnitudes of the components of the first environmental force 1911 and the second environmental force 1912 are different from each other.

[0088] At this time, the driving mechanism 1000 is in the second state, the first correction information is greater than the second correction information, and there is a second difference between the first correction information and the second correction information, and the first difference is different from the second difference. For example, the maximum ratio of the first correction information to the second correction information can be greater than 2, such as greater than 4. In some embodiments, when the driving mechanism 1000 is in Figure 4 The first correction information in the first state and the Figure 5 The first correction information in the second state may be different from each other. Thus, suitable first correction information and second correction information may be selected to control the driving component 1300 more accurately.

[0089] Figure 6 and Figure 7 1 and 2 are schematic diagrams of the driving mechanism 1000 in the third state and the fourth state, respectively. The third state may be, for example, a state in which the driving mechanism 1000 rotates 180 degrees in the first state, and the fourth state may be, for example, a state in which the driving mechanism 1000 rotates 90 degrees in the first state. In the third state, the first correction information may be less than the second correction information, and in the fourth state, the first correction information may be equal to the second correction information. Thus, the influence of external forces (such as gravity) on the driving mechanism 1000 can be balanced to obtain a more accurate control result.

[0090] Please refer back Figure 2 as well as Figure 3, the first correction information or the second correction information selected by the fourth operation unit 1404 can be referred to as the second judgment information 1417. The second operation unit 1402 provides the first judgment information 1415 to the fifth operation unit 1405, and the fourth operation unit 1404 also provides the second judgment information 1417 to the fifth operation unit 1405. The fifth operation unit 1405 then outputs a driving signal 1418 to the driving component 1300 according to the first judgment information 1415 and the second judgment information 1417, so that the driving force 1301 can be output to the movable part 1200 through the driving component 1300 to drive the movable part 1200.

[0091] When the difference information 1413 is within the range of the allowable information 1414, the driving signal 1418 may be a stable signal, such as a constant value or zero. Figure 3 At time point t2, the difference between the current information 1412B and the target information 1411 is the difference information 1413B, and the difference information 1413B falls within the range of the allowable information 1414. At this time, it is determined that the driving component 1300 has driven the movable part 1200 to the desired position, so that the power supply to the driving component 1300 can be stopped. Since the clamping component 1210 clamps the transmission element 1330 of the driving component 1300, even if the power supply to the driving component 1300 is stopped, the movable part 1200 can still stop at any desired position and angle within the movable range to achieve functions such as auto focus (AF).

[0092] On the contrary, when the difference information 1413 exceeds the range of the allowable information 1414, for example, Figure 3 At time point t1, the difference information 1413A exceeds the range of the allowable information 1414. At this time, the fifth operation unit 1405 outputs a drive signal 1418 according to the second judgment information 1417, and the drive signal 1418 at this time (for example, not 0) is different from the stable signal at time point t2 (for example, 0), thereby driving the movable part 1200 to move relative to the fixed part 1100 to allow the movable part 1200 to reach the target position.

[0093] It should be noted that, regardless of whether the driving signal 1418 is 0, that is, regardless of whether the driving component 1300 is operating, that is, regardless of whether the difference information 1413 is within the range of the allowable information 1414, the sensing element 1420 will continue to sense the state of the movable part 1200 relative to the fixed part 1100 to obtain the sensing information 1419 and continue to output the status information 1412. In other words, even if the movable part 1200 has been driven to a desired position, the sensing element 1420 will continue to sense. If the external force causes the movable part 1200 to move undesirably, the sensing element 1420 can immediately sense it and take countermeasures, for example, the movable part 1200 can be moved to a desired position to achieve the functions of autofocus and optical image stabilization.

[0094] In summary, the present disclosure provides a driving mechanism having a fixed portion, a movable portion, a driving component and a control component. The movable portion can move relative to the fixed portion. The driving component is used to drive the movable portion to move. The control component is used to output a control signal to the driving component. In addition, different correction information is given for the movable portion to move in different dimensions, thereby allowing the driving mechanism to adapt to various environmental conditions for more precise control.

[0095] The special relative positions and size relationships of the components disclosed in the present invention not only enable the driving mechanism to be thinner in a specific direction and smaller overall, but also further enhance the optical quality (such as shooting quality or depth sensing accuracy) of the system by matching different optical modules, and further utilize each optical module to achieve a multiple anti-shake system to greatly enhance the anti-shake effect.

[0096] Although the embodiments and advantages of the present disclosure have been disclosed as above, it should be understood that those skilled in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present disclosure. In addition, the scope of protection of the present disclosure is not limited to the processes, machines, manufactures, material compositions, devices, methods and steps in the specific embodiments described in the specification, and any technician in the relevant technical field can understand the current or future developed processes, machines, manufactures, material compositions, devices, methods and steps from the disclosure of the present disclosure, as long as they can implement substantially the same functions or obtain substantially the same results in the embodiments described herein, they can all be used according to the present disclosure. Therefore, the scope of protection of the present disclosure includes the above-mentioned processes, machines, manufactures, material compositions, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the scope of protection of the present disclosure also includes the combination of each claim and embodiment.

Claims

1. A driving mechanism, comprising: a fixing portion; a movable portion, movable relative to the fixed portion; A driving assembly, used to drive the movable part to move; as well as A control component is used to output a control signal to the driving component.

2. The driving mechanism as claimed in claim 1, wherein the control component comprises a fourth computing unit; in: The fourth operation unit outputs a second judgment information according to a difference information or a first intermediate information and a correction information; The driving component is used to drive the movable part to move in a first dimension or a second dimension; The correction information includes a first correction information and a second correction information, which correspond to the first dimension and the second dimension respectively; The first dimension is different from the second dimension; The first correction information is different from the second correction information.

3. The drive mechanism according to claim 2, wherein: The fourth operation unit selects the corresponding first correction information or the second correction information according to a state information and a correction database of the correction information; The status information is related to the status of the drive mechanism; The correction database includes different first correction information and second correction information corresponding to different states; The correction database is defined by measurements from an external device.

4. The drive mechanism according to claim 3, wherein: The fourth operation unit selects one of the first correction information and the second correction information according to the difference information or the first intermediate information; When the driving mechanism is in a first state, the first correction information is greater than the second correction information, and the first correction information has a first difference with the second correction information; When the driving mechanism is in a second state, the first correction information is greater than the second correction information, and the first correction information and the second correction information have a second difference; The first difference is not equal to the second difference; When the driving mechanism is in a third state, the first correction information is smaller than the second correction information; When the driving mechanism is in a fourth state, the first correction information is equal to the second correction information.

5. The drive mechanism according to claim 4, wherein: The maximum ratio of the first correction information to the second correction information is greater than 2; The first correction information when the driving mechanism is in the first state is different from the first correction information when the driving mechanism is in the second state; When the driving mechanism is in the first state, the driving mechanism is subjected to a first environmental force; When the driving mechanism is in the second state, the driving mechanism is subjected to a second environmental force; The first environmental force and the second environmental force have different directions relative to the drive mechanism; In the direction in which the movable portion moves, the magnitudes of the components of the first environmental force and the second environmental force are different.

6. The driving mechanism as claimed in claim 5, further comprising an inertial sensor disposed on the fixed portion or the movable portion, wherein: The first dimension is movement along a first axis; The angle between the first environmental force and the first axis is different from the angle between the second environmental force and the first axis; The state information includes the direction of gravity; The status information is provided by the inertial sensor; The state information includes acceleration information of the driving mechanism.

7. The driving mechanism of claim 2, wherein the control assembly further comprises: a first computing unit, for comparing a target information and a status information to output the difference information; a sensing element, outputting the status information according to the status of the movable part; and a second operation unit, used for comparing the difference information and an allowable information to output a first determination information; in: The target information is provided by a control center.

8. The driving mechanism as claimed in claim 7, wherein the control component further comprises a third computing unit; in: The third operation unit is used for comparing the difference information and a maximum control information to output a first intermediate information to the fourth operation unit; When the difference information falls within the range of the maximum control information, the difference information is the first intermediate information; When the difference information exceeds the range of the maximum control information, a first extreme value of the maximum control information is the first intermediate information.

9. The driving mechanism of claim 8, wherein the control component further comprises a fifth computing unit, outputting a driving signal to the driving component according to the first judgment information and the second judgment information; When the difference information is within the range of the allowable information, the driving signal is a stable signal; When the difference information is within the range of the allowable information, the sensing element continuously outputs the status information according to the moving part; When the difference information exceeds the range of the allowable information, the fifth operation unit outputs the driving signal according to the second judgment information, and the driving signal at this time is different from the stable signal.

10. The drive mechanism of claim 9, wherein: The stable signal is 0; When the driving component does not drive the movable part to move, the state of the movable part remains unchanged; When the driving component does not drive the movable part, the movable part can stay at any position within a movable range; The driving mechanism further comprises a clamping assembly, through which the movable part can be stopped at any position in the movable range; The driving component includes a piezoelectric material.

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