Lens driving mechanism

Abstract

A lens driving mechanism includes a substrate, a lens driving module, and an integrated circuit module. The lens driving module is arranged on the substrate, the lens driving module comprises a top shell and a base which form a shell and are fixedly connected with the substrate, and the shell forms an accommodating space; the lens bearing part is positioned in the accommodating space and is used for bearing a lens; the circuit substrate is positioned in the accommodating space; the driving assembly is positioned in the accommodating space and is used for driving the lens bearing part to move relative to the circuit substrate; the position sensing assembly is positioned in the accommodating space, is arranged on the circuit substrate and is used for sensing the movement of the lens bearing part relative to the circuit substrate; the integrated circuit module is located outside the containing space and arranged on the substrate, the integrated circuit module comprises a controller unit and a driving circuit unit, and the driving circuit unit is electrically connected with the driving assembly and used for driving the lens bearing part to move relative to the circuit substrate.

Description

Technical Field

[0001] The present invention relates to a lens driving mechanism including a voice coil motor, and more particularly to a lens driving mechanism having an integrated circuit component disposed in the voice coil motor. Background Art

[0002] Currently, almost all mobile devices (such as mobile phones) have the function of digital photography, which is attributed to the miniaturization of the lens driving mechanism. A commonly used miniaturized lens driving mechanism is a voice coil motor (VCM), which uses a combination of a coil, a magnet, and a reed to carry and drive the lens to move in the direction of its optical axis, thereby achieving the functions of autofocus or anti-shake.

[0003] During the focusing process of the existing voice coil motor, a driving circuit component disposed outside the voice coil motor is required to drive the voice coil motor. However, the volume occupied by the above driving circuit component is often not conducive to the miniaturization of the mechanism. In view of this, how to overcome the foregoing problems and design a lens driving mechanism with a smaller volume has become an important issue. Summary of the Invention

[0004] In view of the foregoing known problems, an object of the present invention is to provide a lens driving mechanism, including a lens carrier, a circuit board, a driving component, a position sensing component, and an integrated circuit module. The lens carrier is used to carry a lens; the circuit board is disposed on one side of the lens carrier; the position sensing component is disposed on the circuit board; the integrated circuit module is disposed on the circuit board. The integrated circuit module includes a driving circuit unit, and the driving circuit unit is electrically connected to the driving component to drive the lens carrier to displace relative to the circuit board.

[0005] As the lens driving mechanism according to an embodiment of the present invention, the integrated circuit module further includes a controller unit, which is electrically connected to the driving circuit unit and the position sensing component.

[0006] As the lens driving mechanism according to an embodiment of the present invention, the integrated circuit module further includes a signal amplifying unit, which is electrically connected to the position sensing component and the controller unit.

[0007] As the lens driving mechanism according to an embodiment of the present invention, the controller unit, the signal amplifying unit, and the driving circuit unit are integrated into an integrated circuit component.

[0008] As the lens driving mechanism according to an embodiment of the present invention, the controller unit, the signal amplifying unit, the driving circuit unit, and the position sensing component are integrated into an integrated circuit component.

[0009] The lens driving mechanism according to an embodiment of the present invention, wherein the integrated circuit module further includes a controller unit and two signal amplification units, and the driving circuit unit, the controller unit, and the signal amplification unit are integrated in an integrated circuit component.

[0010] The lens driving mechanism according to an embodiment of the present invention, wherein the lens driving mechanism further includes two position sensing components, and the integrated circuit module further includes two driving circuit units, two controller units, and two signal amplification units, wherein the position sensing components, the driving circuit unit, the controller unit, and the signal amplification unit are respectively integrated in two integrated circuit components.

[0011] The lens driving mechanism according to an embodiment of the present invention further includes an acceleration sensor, and the integrated circuit module includes a controller unit, and the controller unit is electrically connected to the acceleration sensor.

[0012] The lens driving mechanism according to an embodiment of the present invention, wherein the acceleration sensor is disposed on the circuit board.

[0013] The lens driving mechanism according to an embodiment of the present invention further includes a digital signal processor, and the digital signal processor is electrically connected to the controller unit and the acceleration sensor.

[0014] The lens driving mechanism according to an embodiment of the present invention, wherein the digital signal processor is disposed on the circuit board.

[0015] The lens driving mechanism according to an embodiment of the present invention, wherein the lens driving mechanism further includes a base, and the base and the integrated circuit module are fabricated in an integrally formed manner by a semiconductor buried substrate technology.

[0016] In another embodiment, the present invention further provides a lens driving mechanism, which includes a lens carrier, a circuit board, a driving component, a position sensing component, and an integrated circuit module. The lens carrier is used to carry a lens; the circuit board is disposed on one side of the lens carrier; the position sensing component is disposed on the circuit board; the integrated circuit module is electrically connected to the driving component and disposed on the circuit board to drive the lens carrier to displace relative to the circuit board, wherein the integrated circuit module includes an acceleration sensor.

[0017] In yet another embodiment, the present invention further provides a multi-lens driving system, which includes two lens driving mechanisms, an acceleration sensor, and a digital signal processor, wherein the digital signal processor is electrically connected to the integrated circuit module and the acceleration sensor in the lens driving mechanism.

[0018] The beneficial effects of the present invention are as follows. The lens driving mechanism provided by the present invention includes at least one integrated circuit module, such as a driving circuit unit. Thereby, the number of driving circuit components outside the lens driving module can be reduced, and the miniaturization of the mechanism can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, is described in detail as follows.

[0020] Figure 1 is a perspective schematic view of a lens driving module shown according to an embodiment of the present invention.

[0021] Figure 2 is Figure 1 an exploded view of the lens driving module in

[0022] Figure 3 is a cross-sectional view along the line A-A' in Figure 1 in

[0023] Figure 4A a schematic diagram showing a lens driving mechanism composed of a lens driving module, an integrated circuit module, a substrate, and an acceleration sensor.

[0024] Figure 4B is a schematic diagram of a lens driving mechanism shown according to another embodiment of the present invention.

[0025] Figure 5A is a schematic diagram of a lens driving mechanism shown according to yet another embodiment of the present invention.

[0026] Figure 5B is a schematic diagram of a lens driving mechanism shown according to yet another embodiment of the present invention.

[0027] Figure 6A is a schematic diagram of a lens driving mechanism shown according to yet another embodiment of the present invention.

[0028] Figure 6B is a schematic diagram of a lens driving mechanism shown according to yet another embodiment of the present invention.

[0029] Figure 7A is a schematic diagram of a lens driving mechanism shown according to yet another embodiment of the present invention.

[0030] Figure 7B is a schematic diagram of a lens driving mechanism shown according to yet another embodiment of the present invention.

[0031] Figure 8A is a schematic diagram of a lens driving mechanism shown according to yet another embodiment of the present invention.

[0032] Figure 8B It is a schematic diagram of a lens driving mechanism shown according to another embodiment of the present invention.

[0033] Figure 9A It is a schematic diagram of a lens driving mechanism shown according to another embodiment of the present invention.

[0034] Figure 9B It is a schematic diagram of a lens driving mechanism shown according to another embodiment of the present invention.

[0035] Figure 10A It is a schematic diagram of a lens driving mechanism shown according to another embodiment of the present invention.

[0036] Figure 10B It is a schematic diagram of a lens driving mechanism shown according to another embodiment of the present invention.

[0037] Figure 11 It is a schematic diagram of a multi-lens driving system shown according to another embodiment of the present invention.

[0038] The reference numerals are as follows:

[0039] 10 - top shell

[0040] 12 - top shell opening

[0041] 20 - base

[0042] 22 - base opening

[0043] 30 - carrier

[0044] 40 - coil

[0045] 50 - frame

[0046] 60 - driving magnet

[0047] 70 - upper spring piece

[0048] 72 - lower spring piece

[0049] 80 - circuit board

[0050] 81 - position sensing component

[0051] 82 - signal amplification unit

[0052] 83 - controller unit

[0053] 84 - driving circuit unit

[0054] 85 - digital signal processor

[0055] 86 - acceleration sensor

[0056] 90 - driving board

[0057] 100 - Lens driving mechanism

[0058] 150 - Substrate

[0059] 200 - Lens driving module

[0060] 300 - Integrated circuit module

[0061] 301 - Integrated circuit component Detailed implementation manners

[0062] The lens driving mechanism of the embodiments of the present invention will be described below. However, it can be easily understood that the embodiments of the present invention provide many suitable inventive concepts that can be implemented in a wide variety of specific backgrounds. The specific embodiments disclosed are only used to illustrate the use of the present invention in a specific method and are not intended to limit the scope of the present invention.

[0063] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs. It can be understood that these terms, such as those defined in a commonly used dictionary, should be interpreted to have a meaning consistent with the relevant technology and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner, unless specifically defined herein.

[0064] Please first refer to Figures 1 to 3 , in which Figure 1 shows a three - dimensional schematic diagram of a lens driving module 200 according to an embodiment of the present invention, Figure 2 shows Figure 1 an exploded view of the lens driving module 200 in Figure 3 shows a cross - sectional view along the line A - A' in Figure 1 . The above - mentioned lens driving module 200 is used to carry an optical component (not shown), wherein the above - mentioned lens driving module 200 is, for example, a voice coil motor (VCM) with an optical image stabilization (OIS) function, and may have an autofocus (AF) and an optical image stabilization (OIS) function.

[0065] As Figures 1 to 3 shown, in this embodiment, the above - mentioned lens driving module 200 mainly includes a top case 10, a base 20, a carrier 30, a coil 40, a frame 50, a plurality of driving magnets 60, an upper spring piece 70, a lower spring piece 72, a set of suspension wires 74, a circuit board 80, two position sensing components 81, and a driving board 90.

[0066] The aforementioned top shell 10 and the base 20 can be combined with each other to form the outer shell of the lens driving module 200. It should be understood that a top shell opening 12 and a base opening 22 are respectively formed on the top shell 10 and the base 20. The center of the top shell opening 12 corresponds to the optical axis O of the lens (not shown in the figure), and the base opening 22 corresponds to an image sensing component (not shown in the figure) provided outside the lens driving module 200. Accordingly, the aforementioned lens provided in the lens driving module 200 can be focused on the image sensing component in the direction of the optical axis O.

[0067] The aforementioned carrier 30 has a through hole 32, in which the optical component can be fixed, and the aforementioned coil 40 is disposed around the outer surface of the carrier 30. The aforementioned frame 50 has an opening 52, in which the driving magnet 60 is fixed on the frame 50. It should be understood that through the interaction between the driving magnet 60 and the coil 40, a magnetic force can be generated to force the carrier 30 to move relative to the frame 50 in the Z-axis direction, thereby achieving the effect of rapid focusing.

[0068] In this embodiment, the carrier 30 and the lens therein are movably disposed within the frame 50. More specifically, the carrier 30 can be connected to the frame 50 and suspended within the frame 50 by an upper spring piece 70 and a lower spring piece 72 made of a metal material ( Figure 3 ). When an electric current is applied to the aforementioned coil 40, the coil 40 will interact with the magnetic field of the driving magnet 60 and generate an electromagnetic force to drive the carrier 30 and the aforementioned lens to move relative to the frame 50 in the direction of the optical axis O, so as to achieve the effect of automatic focusing.

[0069] The aforementioned circuit board 80 is, for example, a flexible printed circuit board (FPC), which can be fixed to the base 20 by an adhesive method. In this embodiment, the circuit board 80 is electrically connected to other electronic components provided inside or outside the lens driving module 200 to perform functions such as automatic focusing (AF) and optical image stabilization (OIS).

[0070] One end of the aforementioned four suspension wires 74 is fixed to the circuit board 80, and the other end is connected to the upper spring piece 70, thereby suspending the frame 50 together with the carrier 30 and the lens disposed therein within the top shell 10, wherein the material of the aforementioned suspension wires 74 can include, for example, metal.

[0071] The aforementioned driving board 90 is, for example, a printed circuit board, which is internally provided with a driving coil (not shown) and can be fixed to the circuit board 80 by an adhesive method. It should be understood that the circuit board 80 can transmit electrical signals to the driving board 90, and the circuit board 80 can also transmit electrical signals to the coil 40 through the suspension wires 74 and the upper spring piece 70, thereby controlling the movement of the carrier 30 in the X, Y or Z axis directions.

[0072] It should be specifically noted that the aforementioned circuit board 80 can provide an electrical signal to the driving board 90. The electromagnetic driving force generated between the coil (such as a flat coil) on the driving board 90 and the driving magnet 60 on the frame 50 can drive the carrier 30 and the frame 50 to move together in a direction perpendicular to the optical axis O (parallel to the XY plane), thereby realizing the function of optical image stabilization (OIS).

[0073] Next, please refer to Figure 4A , the above lens driving module 200, an acceleration sensor 86, and an integrated circuit module 300 can be disposed on a substrate 150 together to form a lens driving mechanism 100. For the sake of simplicity of description, only the position sensing component 81 is shown inside the lens driving module 200, and other components are omitted. As Figure 4A shown, the integrated circuit module 300 is disposed outside the lens driving module 200, and the aforementioned two position sensing components 81 are disposed inside the lens driving module 200 (for example, they can be disposed in the internal space formed by the above top case 10 and the base 20, or disposed on Figure 2 any one of the components shown). Two signal amplifying units 82 are provided inside the integrated circuit module 300, each electrically connected to the aforementioned two position sensing components 81. A controller unit 83 inside the integrated circuit module 300 is electrically connected to the two signal amplifying units 82. In addition, a driving circuit unit 84 inside the integrated circuit module 300 is electrically connected to the controller unit 83, and another digital signal processor 85 inside the integrated circuit module 300 is electrically connected to the controller unit 83 and the acceleration sensor 86 outside the integrated circuit module 300. Particularly, the two signal amplifying units 82, the controller unit 83, the driving circuit unit 84, and the digital signal processor 85 are encapsulated together inside the integrated circuit module 300 and integrated into an integrated circuit component.

[0074] It should be noted that the examples given in this specification are only for illustration, and the number of components of the lens driving mechanism 100 is not limited thereto. For example, the lens driving mechanism 100 may also include one or two or more signal amplifying units 82, two or more controller units 83, or two or more driving circuit units 84, etc.

[0075] The above-mentioned position sensing component 81 is, for example, a Hall effect sensor, an MR sensor, or a Fluxgate, etc., and can thus be used to sense the driving magnet 60 on the frame 50 to obtain the position offsets of the frame 50 and the carrier 30 relative to the base 20 in the X-axis direction and the Y-axis direction. The above-mentioned MR sensor is, for example, a Giant Magneto Resistance sensor (GMR sensor) or a Tunneling Magneto Resistance sensor (TMR sensor). The above-mentioned signal amplification unit 82 is, for example, an Analog Front End (AFE) circuit, which is used to amplify and process the signals sent by the above-mentioned position sensing component 81, and can transmit a converted signal to the controller unit 83 accordingly. The above-mentioned controller unit 83 is, for example, a Servo digital signal processor, which is used to receive the signals transmitted by the signal amplification unit 82 and the digital signal processor 85, and transmit a control signal to the drive circuit unit 84 accordingly. The controller unit 83 may have a Proportional-Integral-Derivative (PID) control circuit to perform feedback control on the received signals. The above-mentioned drive circuit unit 84 is used to receive a control signal transmitted by the controller unit 83, and then can output a Pulse Width Modulation (PWM) signal to the above-mentioned coil 40 or the drive coil (drive component) in the drive board 90 electrically connected thereto to drive the carrier 30 to move. The above-mentioned digital signal processor 85 is used to process a sensing signal transmitted by the acceleration sensor 86, and output an electrical signal to the controller unit 83 accordingly. The above-mentioned acceleration sensor 86 is, for example, a gyro sensor, which can be used to sense the attitude of the lens driving module 200.

[0076] However, in the above component configuration, since the signal amplification unit 82, the controller unit 83, the drive circuit unit 84, the digital signal processor 85, and the acceleration sensor 86 are arranged outside the lens driving module 200, it occupies additional space, and thus the remaining available space in the lens driving mechanism 100 is also reduced. To solve the above problems, in the following embodiments, some of the above components can be integrated into the lens driving module 200 (for example, arranged in the internal space formed by the top shell 10 and the base 20, or arranged in Figure 2on any of the components shown), which can further increase the available space outside the lens driving module 200 and achieve miniaturization of the entire lens driving mechanism 100.

[0077] In another embodiment, as Figure 4B shown, it has a configuration similar to Figure 4A However, the difference is that both the position sensing component 81 and the acceleration sensor 86 are disposed within the lens driving module 200. Compared with the configuration of Figure 4A , since the acceleration sensor 86 is disposed within the lens driving module 200, the number of components outside the lens driving module 200 can be reduced, thereby achieving the purpose of miniaturizing the mechanism.

[0078] In yet another embodiment, as Figure 5A shown, two position sensing components 81, two signal amplifying units 82, a controller unit 83, and a driving circuit unit 84 are disposed together within the lens driving module 200, which can reduce the number of components outside the lens driving module 200, thereby achieving the purpose of miniaturizing the mechanism. Among them, the above two signal amplifying units 82, the controller unit 83, and the driving circuit unit 84 are encapsulated together within the same integrated circuit module 300 and integrated into an integrated circuit component. Based on this packaging method, the overall efficiency of the lens driving mechanism 100 can be enhanced. In addition, since the digital signal processor 85 is disposed outside the lens driving module 200 and can be electrically connected to multiple acceleration sensors 86, it is more suitable for application in multi-lens driving modules.

[0079] Different from the configuration of Figure 5A , the acceleration sensor 86 can also be disposed within the lens driving module 200 (as Figure 5B shown). In this embodiment, since the acceleration sensor 86 is disposed within the lens driving module 200 and integrated into the integrated circuit module 300, the number of components outside the lens driving module 200 can be reduced, thereby achieving the purpose of miniaturizing the mechanism.

[0080] In yet another embodiment, as Figure 6A shown, wherein the driving circuit unit 84 is disposed within the lens driving module 200 and integrated into the integrated circuit module 300. Compared with the configuration of Figure 4A , the number of components outside the lens driving module 200 can also be reduced, thereby achieving the purpose of miniaturizing the mechanism. Since the digital signal processor 85 is disposed outside the lens driving module 200 and can be electrically connected to multiple acceleration sensors 86, it is more suitable for application in multi-lens driving modules.

[0081] Different from Figure 6AIn the configuration method, the acceleration sensor 86 can also be disposed within the lens driving module 200 (as Figure 6B shown). In this embodiment, since the acceleration sensor 86 is disposed within the lens driving module 200, the number of components outside the lens driving module 200 can be reduced, thereby achieving the purpose of miniaturizing the mechanism.

[0082] As Figure 7A shown, what is different between this embodiment and Figures 4A - 6B the embodiment of is that the lens driving mechanism 100 of this embodiment includes two signal amplifying units 82, two controller units 83, and two driving circuit units 84. Among them, the two signal amplifying units 82, the two controller units 83, and the two driving circuit units 84 are disposed within the lens driving module 200 together with the two position sensing components 81, and are integrated into an integrated circuit module 300. For example, they can be encapsulated in a single integrated circuit component, thereby reducing the number of components outside the lens driving module 200, and thus achieving the purpose of miniaturizing the mechanism.

[0083] Particularly, in this embodiment, the integrated circuit module 300 further includes two integrated circuit components 301, and each integrated circuit component 301 includes a position sensing component 81, a signal amplifying unit 82, a controller unit 83, and a driving circuit unit 84 respectively. Based on this configuration method, the overall efficiency of the lens driving mechanism 100 can be enhanced, especially it is more suitable for application in a multi-lens driving module. In addition, since the digital signal processor 85 is disposed outside the lens driving module 200 and can be electrically connected to multiple acceleration sensors 86, it is also suitable for application in a multi-lens driving module.

[0084] Different from Figure 7A the configuration method, an acceleration sensor 86 can also be disposed within the lens driving module 200 (as Figure 7B shown). In this embodiment, since the acceleration sensor 86 is disposed within the lens driving module 200, the number of components outside the lens driving module 200 can be reduced, thereby achieving the purpose of miniaturizing the mechanism.

[0085] In yet another embodiment, as Figure 8A shown, which is different from Figure 7AThe difference in the illustrated embodiment is that the digital signal processor 85 is disposed within the lens driving module 200, thereby reducing the number of components outside the lens driving module 200 and thus achieving the purpose of miniaturizing the mechanism. Among them, each integrated circuit component 301 includes a position sensing component 81, a signal amplifying unit 82, a controller unit 83, and a driving circuit unit 84. Based on this packaging method, the overall efficiency of the lens driving mechanism 100 can be enhanced, especially more suitable for application in a multi-lens driving module.

[0086] Different from Figure 8A the configuration method, an acceleration sensor 86 can also be disposed within the lens driving module 200 (as Figure 8B shown). In this embodiment, since the acceleration sensor 86 is disposed within the lens driving module 200, the number of components outside the lens driving module 200 can be reduced, thus achieving the purpose of miniaturizing the mechanism.

[0087] Please refer to Figure 9A another embodiment shown. The difference between this embodiment and Figure 4A the embodiment is that the above-mentioned integrated circuit module 300 is disposed within the lens driving module 200, thereby reducing the number of components outside the lens driving module 200 and thus achieving the purpose of miniaturizing the mechanism.

[0088] Different from Figure 9A the configuration method, an acceleration sensor 86 can also be disposed within the lens driving module 200 (as Figure 9B shown). In this embodiment, since the acceleration sensor 86 is disposed within the lens driving module 200, the number of components outside the lens driving module 200 can be reduced, thus achieving the purpose of miniaturizing the mechanism.

[0089] In yet another embodiment, as Figure 10A shown, two position sensing components 81, two signal amplifying units 82, a controller unit 83, a driving circuit unit 84, and a digital signal processor 85 are all disposed within the lens driving module 200, thereby reducing the number of components outside the lens driving module 200 and thus achieving the purpose of miniaturizing the mechanism. Among them, two signal amplifying units 82, a controller unit 83, and a driving circuit unit 84 are packaged together within the integrated circuit module 300, for example, integrated in an integrated circuit component, thus saving space and enhancing the overall efficiency of the lens driving mechanism 100.

[0090] Different from Figure 10A the configuration method, an acceleration sensor 86 can also be disposed within the lens driving module 200 (as Figure 10BAs shown. In this embodiment, since the acceleration sensor 86 is disposed within the lens driving module 200, the number of components outside the lens driving module 200 can be reduced, thereby achieving the purpose of miniaturizing the mechanism.

[0091] It should be noted that the integrated driving module 300 in each of the above embodiments can be integrally formed with the base 20 ( Figure 2 ) in the lens driving module 200 by using semiconductor embedded substrate (SESUB) technology. Through this technology, the thickness of the overall lens driving mechanism can be reduced to achieve the purpose of miniaturizing the mechanism.

[0092] It should be understood that the foregoing lens driving mechanism 100 can be further applied to a multi-lens driving system (such as a dual-lens driving system). For example, as Figure 11 shown in the multi-lens driving system, two lens driving mechanisms 100, a digital signal processor 85, and an acceleration sensor 86 can be jointly disposed on a substrate 150 (for the sake of simplicity in description, only one lens driving module 200 and one integrated circuit module 300 are shown in the above two lens driving mechanisms 100, and other components are omitted). The digital signal processor 85 is electrically connected to the integrated circuit modules 300 and the acceleration sensor 86 in the two lens driving mechanisms 100. Through this configuration, functions such as optical image stabilization (OIS) or autofocus (AF) can be respectively performed on different lenses.

[0093] In summary, the present invention provides a lens driving mechanism. The lens driving mechanism includes a lens driving module. The lens driving module at least includes an integrated circuit module, such as a signal amplification unit, a controller unit, a driving circuit unit, a digital signal processor, or an acceleration sensor, etc. Thereby, the number of driving circuit components outside the lens driving module can be reduced, and the purpose of miniaturizing the mechanism can be achieved.

[0094] Although the embodiments of the present invention and their advantages have been disclosed 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 invention. In addition, the protection scope of the present invention is not limited to the processes, machines, manufactures, compositions of matter, devices, methods, and steps in the specific embodiments described in the specification. Any processes, machines, manufactures, compositions of matter, devices, methods, and steps that can be developed currently or in the future by those skilled in the art from the disclosed content of the present invention can be used according to the present invention as long as they can implement substantially the same functions or achieve substantially the same results in the embodiments described herein. Therefore, the protection scope of the present invention includes the above-mentioned processes, machines, manufactures, compositions of matter, devices, methods, and steps. Additionally, each claim constitutes an individual embodiment, and the protection scope of the present invention also includes the combination of each claim and embodiment.

[0095] Although the present invention has been disclosed above in several preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the appended claims. In addition, each claim constitutes an independent embodiment, and the combinations of various claims and embodiments are all within the scope of the present invention.

Claims

1. A lens driving mechanism, comprising: A substrate; A lens driving module disposed on the substrate, the lens driving module comprising: A top shell and a base, forming a housing and fixedly connected to the substrate, the housing forming an accommodation space; A lens carrier located within the accommodation space and adapted to carry a lens; A circuit board located within the accommodation space; A driving component located within the accommodation space and adapted to drive the lens carrier to move relative to the circuit board; and A position sensing component located within the accommodation space and disposed on the circuit board, for sensing the movement of the lens carrier relative to the circuit board; and An integrated circuit module located outside the accommodation space and disposed on the substrate, wherein the integrated circuit module includes a controller unit and a driving circuit unit, and the driving circuit unit is electrically connected to the driving component to drive the lens carrier to displace relative to the circuit board.

2. The lens driving mechanism according to claim 1, wherein the lens driving module further includes a frame, an upper spring piece, and a lower spring piece, wherein the lens carrier is connected to the frame through the upper spring piece and the lower spring piece and is suspended within the frame.

3. The lens driving mechanism according to claim 2, wherein the lens driving module further includes four suspension wires, wherein the lens carrier and the frame are suspended within the top shell through the four suspension wires.

4. The lens driving mechanism according to claim 3, wherein the lens driving module further includes a driving board fixed on the circuit board and electrically connected to the circuit board, wherein the driving board includes a first coil, and the driving component includes a driving magnet disposed on the frame, and the first coil and the driving magnet generate a first electromagnetic driving force to drive the lens carrier and the frame to move together in a direction perpendicular to an optical axis.

5. The lens driving mechanism according to claim 4, wherein the driving component further includes a second coil disposed around an outer surface of the lens carrier, and the second coil and the driving magnet generate a second electromagnetic driving force to drive the lens carrier to move relative to the frame in the direction of the optical axis.

6. The lens driving mechanism according to claim 5, wherein the controller unit is a servo digital signal processor and has a proportional-integral-derivative control circuit, and transmits a control signal to the driving circuit unit, and the driving circuit unit outputs a linear / pulse bandwidth modulation signal to the first coil or the second coil.

7. The lens driving mechanism according to claim 3, wherein one end of each of the four suspension wires is fixed to the circuit board and the other end is connected to the upper spring piece.

8. The lens driving mechanism according to claim 1, wherein the circuit board is fixed to the base by an adhesion method.

9. The lens driving mechanism according to claim 1, wherein the integrated circuit module further includes a digital signal processor electrically connected to the controller unit.

10. The lens driving mechanism according to claim 9, further comprising an acceleration sensor electrically connected to the controller unit through the digital signal processor.

Images