CN116888968A

CN116888968A - Camera module and terminal equipment

Info

Publication number: CN116888968A
Application number: CN202280012931.6A
Authority: CN
Inventors: 黄桢; 叶林敏; 卞强龙; 阙嘉耀; 姚施琴
Original assignee: Ningbo Sunny Opotech Co Ltd
Current assignee: Ningbo Sunny Opotech Co Ltd
Priority date: 2021-02-07
Filing date: 2022-01-30
Publication date: 2023-10-13
Also published as: WO2022166924A1

Abstract

The application provides a camera module and terminal equipment, wherein the camera module comprises a lens assembly; a fixed substrate for setting the lens assembly, the fixed substrate including an electrical connector; the photosensitive assembly is arranged below the fixed substrate, and extends upwards and is electrically connected with the electric connecting piece of the fixed substrate. According to the technical scheme, the piezoelectric actuator is used for driving the photosensitive assembly to move relative to the lens assembly to realize chip anti-shake, the photosensitive assembly is fixed below the fixed substrate, the circuit board of the photosensitive assembly is electrically connected to the electric connecting piece of the fixed substrate, and the influence of the electric connecting piece on the movement of the photosensitive assembly is reduced.

Description

Camera module and terminal equipment

Technical Field

The application relates to the technical field of photoelectricity, in particular to a camera module and terminal equipment.

Background

With the increasing demands of consumers for mobile phones, the functions of mobile phone cameras (i.e. camera modules) are becoming more and more abundant, and the functions of portrait shooting, remote shooting, optical zooming, optical anti-shake and the like are integrated into cameras with limited volumes, and the functions of auto-focusing and optical anti-shake are often realized by means of optical actuators (sometimes also called motors).

Along with the increasing requirement of imaging quality of the mobile phone camera module, the size and the weight of the lens are larger, the driving force requirement on the motor is also higher, and the occupied size of the motor is correspondingly increased along with the increase of the lens. However, since the current electronic devices (such as mobile phones) have a large limit on the volume of the camera module, the driving force provided by the motor is difficult to increase correspondingly under the trend that the lens is larger in volume and weight. Under the premise of limited driving force, the heavier the lens, the shorter the stroke of the motor capable of driving the lens to move, and focusing and anti-shake capabilities are affected. On the other hand, the heavier the lens, the slower the motor can drive the lens to move, and the longer the lens reaches a predetermined compensation position, which also affects focusing and anti-shake effects.

As the miniaturization requirements of mobile devices continue to increase, so does the density of the internal components of the motor. The motor is internally provided with a magnet and a coil for generating a magnetic field necessary for driving the lens to move, and when the distance between the two magnets in the motor is too short (less than 7 mm), the internal magnetic fields of the two magnets can influence each other, so that the magnets generate displacement or shake, and the focusing and imaging quality of the lens are influenced.

Disclosure of Invention

The application aims to provide a camera module and terminal equipment, which can improve the anti-shake effect of the camera module.

According to an aspect of the present application, there is provided an image capturing module including a lens assembly; a fixed substrate for setting the lens assembly, the fixed substrate including an electrical connector; the photosensitive assembly is arranged below the fixed substrate, and extends upwards and is electrically connected with the electric connecting piece of the fixed substrate.

According to some embodiments, the photosensitive assembly is electrically connected to the electrical connector of the stationary substrate through a flexible printed circuit board.

According to some embodiments, the camera module further comprises: the support assembly is arranged on the support assembly and comprises a first base and a second base, the second base is arranged on the support assembly in a sliding mode along a first direction, and the photosensitive assembly is arranged on the first base; the outer frame body is arranged on the outer frame body in a sliding way along a second direction; the first direction and the second direction are two directions perpendicular to each other in a plane where an optical axis direction along the axial direction of the lens is located.

According to some embodiments, the electrical connector of the fixed substrate comprises at least two LDS grooves arranged on the surface of the fixed substrate, and the inner surfaces of the at least two LDS grooves are plated with conductive plating layers.

According to some embodiments, the electrical connector of the fixed substrate comprises: and a circuit layer is paved on the surface of the fixed substrate and used for conducting the photosensitive assembly, at least one piezoelectric actuator and the circuits of external electronic equipment.

According to some embodiments, the electrical connector of the fixed substrate comprises at least two wires integrally formed within the fixed substrate.

According to some embodiments, the camera module further comprises: at least one piezoelectric actuator for driving movement of a support assembly, the at least one piezoelectric actuator comprising: a first piezoelectric actuator driving the first base to move in a first direction; and the second piezoelectric actuator drives the second base to move along a second direction.

According to some embodiments, each piezoelectric actuator includes a piezoelectric substrate and a vibration substrate, wherein one end of the vibration substrate is connected to the piezoelectric substrate, and an electric potential is applied to the piezoelectric substrate to cause contraction or expansion of the piezoelectric substrate and the vibration substrate, and the vibration substrate drives the driving shaft to move.

According to some embodiments, each piezoelectric actuator comprises a plurality of piezoelectric telescopic bodies and a plurality of electrodes, wherein the plurality of piezoelectric telescopic bodies and the plurality of electrodes are alternately laminated, when the directions of electric fields caused by potential differences on the plurality of electrodes are different, the plurality of piezoelectric telescopic bodies deform, and the continuous deformation of the piezoelectric elements drives the driving shaft to reciprocate.

According to some embodiments, the at least one piezoelectric actuator comprises: a first piezoelectric actuator driving the second base to move in a first direction; and a second piezoelectric actuator driving the first base to move in a second direction.

According to some embodiments, each piezoelectric actuator includes a moving member, a drive shaft connected to the piezoelectric element, and a piezoelectric element to which the moving member is slidably and frictionally disposed.

According to some embodiments, the camera module further comprises: the first guiding unit is arranged on one side opposite to the first piezoelectric actuator and used for guiding the first base to move along a first direction; and the second guiding unit is arranged on one side opposite to the second piezoelectric actuator and used for guiding the second base to move along a second direction.

According to some embodiments, the first piezoelectric actuator is at the same level as the second piezoelectric actuator.

According to some embodiments, the first piezoelectric actuator and the second piezoelectric actuator are both disposed outside the photosensitive assembly.

According to some embodiments, the first piezoelectric actuator is located on an outer sidewall of the first base.

According to some embodiments, the second piezoelectric actuator is located on an outer sidewall of the second base.

According to some embodiments, the first piezoelectric actuator and the first guide unit are respectively disposed at intermediate positions of opposite sides of the first base along the first direction.

According to some embodiments, the second piezoelectric actuator and the second guiding unit are respectively disposed at intermediate positions of two opposite sides of the second base along the second direction.

According to some embodiments, the first piezoelectric actuator and the first guide unit are disposed at diagonal positions along the first direction on opposite sides of the first base, respectively.

According to some embodiments, the second piezoelectric actuator and the second guide unit are respectively disposed at diagonal positions on opposite sides of the second base along the second direction.

According to some embodiments, the first piezoelectric actuator and the second piezoelectric actuator are located at the same corner of the camera module.

According to another aspect of the present application, a terminal device is provided, comprising an imaging module as described above.

Based on the camera shooting module and the terminal equipment, the photosensitive assembly is arranged below the fixed substrate and is electrically connected to the electric connecting piece of the fixed substrate, so that the influence of the electric connecting piece on the movement of the photosensitive assembly is reduced.

Based on the camera module and the terminal equipment, the mode that the piezoelectric actuator converts electric energy into elastic deformation is utilized to drive the photosensitive assembly to move, and the influence of the electric connecting part on the movement of the photosensitive assembly is reduced by electrically connecting the piezoelectric actuator with the electric connecting piece of the fixed substrate, so that the anti-shake effect can be further improved.

Based on the camera module and the terminal equipment, the piezoelectric actuator is utilized to convert electric energy into elastic deformation to drive the photosensitive assembly to move, and the piezoelectric actuator is arranged between the photosensitive assembly and the fixed substrate, so that the camera module is more compact in structure.

For a further understanding of the nature and the technical aspects of the present application, reference should be made to the following detailed description of the application and the accompanying drawings, which are included to illustrate and not to limit the scope of the application.

Drawings

Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, are included to provide a further understanding of the disclosure. The exemplary embodiments of the present disclosure and their description are for the purpose of explaining the present disclosure and are not to be construed as unduly limiting the present disclosure. In the accompanying drawings:

Fig. 1-2 are schematic diagrams showing the structures of an image capturing module and a terminal device according to an exemplary embodiment of the present application.

Fig. 3 shows a schematic structural diagram of an image capturing module and a terminal device according to an exemplary embodiment of the present application.

Fig. 4 is a schematic structural view showing a first piezoelectric actuator and a second piezoelectric actuator of an image capturing module and a terminal device according to an exemplary embodiment of the present application.

Fig. 5 shows a schematic structural diagram of an image capturing module and a terminal device according to an exemplary embodiment of the present application.

Fig. 6 is a schematic diagram showing a connection relationship between a piezoelectric actuator and a fixed substrate of an image pickup module and a terminal device according to an exemplary embodiment of the present application.

Fig. 7 to 15 are schematic diagrams showing the position structures of the piezoelectric actuator and the guide unit of the camera module and the terminal device according to the exemplary embodiment of the present application.

Fig. 16 is a schematic view showing the positional structure of a piezoelectric actuator and a photosensitive member of an image pickup module and a terminal device and a fixing substrate according to an exemplary embodiment of the present application.

Fig. 17 to 19 are schematic structural views showing a camera module and a piezoelectric actuator of a terminal device according to an exemplary embodiment of the present application.

Fig. 20 is a schematic view showing the structure of a piezoelectric element of a piezoelectric actuator of an image pickup module and a terminal device according to an exemplary embodiment of the present application.

Fig. 21 is a schematic view showing a structure of a fixing substrate of an image capturing module and a terminal apparatus according to an exemplary embodiment of the present application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, devices, or the like. In these instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

An image capturing module and a terminal device according to embodiments of the present application will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-2, an image capturing module 10 according to an exemplary embodiment of the present application includes a stationary substrate 400, a lens assembly 600, a photosensitive assembly 100, and at least one piezoelectric actuator 200 and a supporting assembly 500. The fixing substrate 400 is used to dispose the lens assembly 600. The photosensitive assembly 100 is disposed under the fixed substrate 400 and on the supporting assembly 500. The at least one piezoelectric actuator 200 drives the supporting component 500 to drive the photosensitive component 100 to move on the imaging plane, wherein the at least one piezoelectric actuator 200 is electrically connected to the fixed substrate 400. The fixing substrate 400, the lens assembly 600, the at least one piezoelectric actuator 200, the photosensitive assembly 100 and the supporting assembly 500 can be detachably fixed together. Of course, the number of the at least one piezoelectric actuator 200 is not limited in the present embodiment, and may be arbitrarily set according to actual needs.

The photosensitive assembly 100 is disposed on the supporting assembly 500, and the supporting assembly 500 is driven by at least one piezoelectric actuator 200 to drive the photosensitive assembly 100 to move, so that the fixing substrate 400 does not move, thereby realizing optical anti-shake of the camera module 10.

The fixing substrate 400 includes an electrical connector, and is used for disposing the lens assembly 600. The photosensitive assembly is disposed below the fixed substrate 400, wherein the photosensitive assembly 100 is electrically connected to an electrical connector of the fixed substrate 400.

The fixed substrate 400 has mounting holes in which the lens assembly 600 can be mounted. The surface of the fixing substrate 400 is laid with a circuit layer of the electrical connector, and the fixing substrate 400 is connected to the external electronic device motherboard through a flexible board and a connector for conduction. The circuit layer may be implemented as a Flexible Printed Circuit (FPC), and a Flexible Printed Circuit (FPC) is disposed on the surface of the fixing substrate 400, and the FPC may be attached to the upper surface of the fixing substrate 400 and connected to external electronic devices through the FPC. The piezoelectric actuator 200 and the photosensitive assembly 100 extend upward through a wire or a flexible board and are electrically connected to a flexible board FPC on the surface of the fixed substrate 400, so as to realize circuit conduction. The at least one piezoelectric actuator 200 and the photosensitive assembly 100 may be electrically connected to the circuit layer of the fixing substrate 400 through a connection circuit, so as to realize the circuit conduction of the image capturing module 10.

At least one piezoelectric actuator 200 and the photosensitive assembly 100 are disposed below the fixed substrate 400, so that the at least one piezoelectric actuator 200 and the photosensitive assembly 100 need to be extended upward through a wire or a flexible board and electrically connected to a circuit layer of an electrical connector on the surface of the fixed substrate 400, and the electrical connector is extended upward through a wire or a circuit of the flexible board to conduct, so that the height space of the camera module 10 can be fully utilized, the structure of the camera module 10 is more compact, and the influence of the electrical connector on the movement of the photosensitive assembly is reduced.

Compared with the circuit board of the photosensitive assembly 100 for conducting with an external circuit, the embodiment of the application can reduce the length of the circuit board of the photosensitive assembly 100, thereby simplifying the wire arrangement of the camera module 10.

The fixed substrate 400 includes an electrical connector, and the at least one piezoelectric actuator 200 is electrically connected to the electrical connector of the fixed substrate 400. The fixing substrate 400 is disposed on the light emitting side of the lens assembly 600 and the light incident side of the photosensitive assembly 100, and is used for disposing the lens assembly 600, and the electrical connector of the fixing substrate 400 is used for electrically connecting with at least one piezoelectric actuator, so as to reduce the arrangement of circuit board components.

The fixed substrate 400 is disposed between the lens assembly 600 and the photosensitive assembly 100, and the lens assembly 600 is disposed on a photosensitive path of the photosensitive assembly 100, so that the photosensitive assembly 100 can receive the light projected from the lens assembly 600 for imaging.

According to an embodiment of the present application, the electrical connector of the fixed substrate 400 includes at least two LDS grooves disposed on the surface of the fixed substrate 400, wherein the inner surfaces of the at least two LDS grooves are plated with a conductive plating layer, the depth of the LDS grooves is not greater than 20-30 μm, and the width thereof is not less than 60 μm.

An LDS (laser direct structuring) is used in the slot, and a conductive coating, for example, a nickel-palladium-gold coating, is plated on the surface of the LDS slot, so that interference of other metals in the slot can be avoided, and connection between the connection circuit of at least one piezoelectric actuator 200 and the conductive coating in the LDS slot of the fixed substrate 400 is realized.

According to other embodiments of the present application, at least two wires may be integrally formed in the fixed substrate 400 by Insert Molding technology, so that the connection circuit of the at least one piezoelectric actuator 200 is electrically connected to the at least two wires to realize the lead-out circuit.

Referring to fig. 3, the photosensitive assembly 100 includes a photosensitive element 104 and a circuit board assembly 106 according to an embodiment of the present application. The circuit board assembly 106 is used for carrying the photosensitive element 104. The circuit board assembly 106 includes a circuit board, which may be a PCB (Printed Circuit Board ) or a rigid-flex board, electronic components, and gold wires.

Optionally, the circuit board may also be a reinforced FPC (Flexible Printed Circuit, flexible printed circuit board), where the flexible printed circuit board includes a PCB and an FPC that are stacked, and the reinforced flexible printed circuit board includes a FPC and a reinforcing sheet that are stacked, where the reinforcing sheet may be a sheet with good heat dissipation performance such as a steel sheet.

According to an example embodiment, the FPC may extend upward through an edge or corner of the camera module having a margin, and be electrically connected to the circuit layer of the fixing substrate 400. Like this, compare with traditional connected mode, can reduce the influence to photosensitive assembly removal, can further improve anti-shake effect. In addition, the length of the circuit board can be reduced, and wiring is made simpler.

The photosensitive element 104 is arranged on the circuit board and is electrically connected with the circuit board, the photosensitive element 104 can sense light, the light signal is converted into an electric signal for imaging through the photosensitive function of the photosensitive element 104, and one side of the photosensitive element 104 far away from the circuit board comprises a photosensitive area and a non-photosensitive area which is arranged around the photosensitive area.

According to an example embodiment, the photosensitive assembly 100 may also include a filter assembly 108. The filter assembly 108 may include a filter and a bracket 102, where the filter is disposed above the photosensitive chip and supported by the bracket 102, and the bracket 102 is fixed to the circuit. The photosensitive element 104, the circuit board assembly 106 and the filter assembly 108 are packaged as a whole to form an enclosed space. The photosensitive element 104 is accommodated in the closed space, so that the sealing property of the photosensitive chip is improved, and the imaging of the photosensitive element 104 is not influenced by dust in the process of making or using the camera module. According to some embodiments, optical anti-shake may be achieved by driving the entire photosensitive assembly 100 to move.

According to other example embodiments, the support 102 may be replaced by a package, i.e. a package is formed on the circuit, and the package may be used to embed the electronic component and/or the non-photosensitive area of the photosensitive element 104, and the package may be integrally formed on the circuit board, so that the height of the camera module may be reduced, and the electronic component may be protected from being polluted and damaged. The package may also be used to support the filter instead of the support 102.

As shown in fig. 4, the support assembly 500 includes a first base 501 and a second base 503, and at least one piezoelectric actuator 200 is disposed on the support assembly 500 and drives the support assembly 500 to move in a plane perpendicular to the optical axis direction according to an embodiment of the present application. The at least one piezoelectric actuator 200 includes a first piezoelectric actuator 205 and a second piezoelectric actuator 201 that drive the first base to move in a first direction. The second base is driven to move along the second direction.

According to the embodiment of the application, the photosensitive assembly 100 is disposed on the first base 501, and the first piezoelectric actuator 205 drives the first base 501 to drive the photosensitive assembly 100 to move along the first direction (X direction), so as to realize optical anti-shake in the first direction. The first base 501 is disposed on the second base 503, and the second piezoelectric actuator 201 drives the second base 503 to drive the first base 501 to move along the second direction (Y direction), so as to drive the photosensitive assembly 100 to move along the second direction, thereby realizing optical anti-shake in the second direction. The first direction and the second direction are two directions which are mutually perpendicular along the imaging plane,

In the present application, the first direction is taken as the X-axis direction, and the second direction is taken as the Y-axis direction as an example. In the application, the photosensitive assembly 100 is respectively moved along two directions perpendicular to each other on the imaging plane by two different bases, and the optical anti-shake driving in the two directions is separated, so that mutual interference is not generated.

The first base 501 is disposed between the photosensitive assembly 100 and the second base 503, and the second base 503 is disposed between the first base 501 and the outer frame 300, that is, the photosensitive assembly 100, the first base 501, the second base 503, and the outer frame 300 are sequentially disposed along the optical axis direction. The photosensitive assembly 100 is drivingly connected to at least one piezoelectric actuator 200, and the first piezoelectric actuator 205 is disposed on the second base 503 and drives the first base 501 to move along the X-axis direction relative to the second base 503, thereby driving the photosensitive assembly 100 to move along the X-axis direction, and realizing optical anti-shake along the X-axis direction.

The second base 503 has a connection portion, and is configured to be movably connected to the first base 501, that is, when the second base 503 moves, the first base 501 may be driven to move in the same direction by the connection portion, and the second piezoelectric actuator 201 is disposed on the fixed substrate 400 and/or the outer frame 300, so as to drive the second base 503 and the first base 501 to move in the Y-axis direction relative to the outer frame 300, thereby driving the photosensitive assembly 100 to move in the Y-axis direction, and realizing optical anti-shake in the Y-axis direction.

As shown in fig. 5, balls and rails are used as guide structures for defining the direction in which the first and second bases 501 and 503 move.

Specifically, at least one receiving cavity capable of receiving the second ball portion 110 is provided between the first base 501 and the second base 503, for supporting and maintaining a distance between the first base 501 and the second base 503, and for providing a movement of the first base 501 relative to the second base 503 in the X-axis direction, and for reducing a friction force upon movement by rolling friction instead of sliding friction. Specifically, the bottom side of the first base 501 and the top side of the second base 503 have at least one track along the X-axis direction, and the tracks are located opposite to each other and form a receiving cavity along the X-axis direction, in which the second ball portion 110 is received. According to an embodiment of the present application, the number of the receiving chambers and the balls is 4 and are located at four corners of the first and second bases 501 and 503, respectively.

The second base 503 has at least one receiving cavity between the outer frame 300 to receive the third ball portion 111, for supporting and maintaining a distance between the second base 503 and the outer frame 300, and providing a movement of the second base 503 in the Y-axis direction with respect to the outer frame 300, and reducing a friction force at the time of movement by rolling friction instead of sliding friction. Specifically, the bottom side of the second base 503 and the top side of the outer frame 300 have at least one track along the Y-axis direction, and the tracks are located opposite to each other and form a receiving cavity along the Y-axis direction, in which the third ball portion 111 is received. According to an embodiment of the present application, the number of the receiving chambers and the balls is 4 and are located at four corners of the first and second bases 501 and 503, respectively.

According to the embodiment of the application, the first piezoelectric actuator 205 is located on an outer side wall of the first base 501, and the first piezoelectric actuator 205 is fixed on the second base 503 and drives the first base 501 to move along the X-axis direction.

According to an embodiment of the present application, the piezoelectric element 221 of the first piezoelectric actuator 205 is fixed to the second base 503 by an adhesive, and the adhesive may be soft rubber having elasticity. The length direction of the driving shaft 223 is identical to the X direction, and the other end of the driving shaft 223 may be fixed to the second base 503 by an adhesive having elasticity, or the other end of the driving shaft 223 may be movably connected to the second base 503, that is, suspended from the second base 503 or suspended, so that the repeated vibration is not affected, and the piezoelectric element 221 and the driving shaft 223 of the first piezoelectric actuator 205 may be allowed to vibrate freely. The movable member 225 may be fixed to the first base 501 by adhesion, or may be fixed in a direction integrally formed with the first base 501, and the present application is not particularly limited. The piezoelectric element 221 may be integrally formed with the second base 503.

The second piezoelectric actuator 201 is located on an outer sidewall of the second base 503, and the second piezoelectric actuator 201 is fixed on the fixed substrate 400 and drives the second base 503 to move along the Y-axis direction.

Referring to fig. 6, the piezoelectric element 221 of the second piezoelectric actuator 201 is fixed to the bottom surface of the fixing substrate 400 by means of adhesive bonding. The adhesive can be soft rubber with elasticity. The length direction of the driving shaft 223 is identical to the Y direction, and the other end of the driving shaft 223 may be fixed to the fixed substrate 400 by an adhesive having elasticity, or the other end of the driving shaft 223 may be movably connected to the fixed substrate 400, that is, suspended from the fixed substrate 400 or suspended, etc., without affecting the repeated vibration, so that the piezoelectric element 221 and the driving shaft 223 of the second piezoelectric actuator 201 may vibrate freely. The moving member 225 may be fixed to the second base 503 by adhesion, or may be fixed in a direction integrally formed with the second base 503, and the present application is not limited thereto. The piezoelectric element 221 may be integrally formed with the fixed substrate 400.

According to the embodiment of the present application, the fixing substrate 400 is used as a reference surface, and the second piezoelectric actuator 201 is fixed on the fixing substrate 400 upwards, so that the assembly accuracy of the second piezoelectric actuator 201 can be improved, and the second piezoelectric actuator 201 can also maintain good flatness.

According to another embodiment of the present application, the second piezoelectric actuator 201 may be adhesively fixed to the outer frame 300, the length direction of the driving shaft 223 is identical to the Y direction, and the other end of the driving shaft 223 may be fixed to the outer frame 300 by an adhesive having elasticity, or the other end of the driving shaft 223 may be movably connected to the outer frame 300, that is, suspended from the outer frame 300, suspended from the air, or the like, without affecting the repeated vibration thereof, so that the piezoelectric element 221 and the driving shaft 223 of the second piezoelectric actuator 201 may vibrate freely. Of course, when a plurality of second piezoelectric actuators 201 are used, the fixed substrate 400 and the outer frame 300 may be fixed at the same time.

The first piezoelectric actuator 205 and the second piezoelectric actuator 201 are located at the same horizontal plane, so that parallelism between the first piezoelectric actuator 205 and the second piezoelectric actuator 201 can be improved, and superposition of assembly tolerance during assembly forming is avoided, so that assembly accuracy of the camera module is improved.

Further, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are disposed outside the photosensitive assembly 100, so as to avoid overlapping of at least one piezoelectric actuator 200 and the photosensitive assembly 100 in the height direction, increasing the height of the photosensitive assembly 100, resulting in increased module height, or preventing the focal plane of the lens assembly 600 from falling onto the photosensitive chip, thereby affecting the imaging effect.

Fig. 11 to 19 are schematic diagrams showing the position structures of the piezoelectric actuator and the guide unit of the camera module and the terminal device according to the exemplary embodiment of the present application.

Referring to fig. 7 to 15, it can be seen that the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are located at several alternative mounting positions within the camera module, and the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are located at adjacent sides of the camera module, respectively.

Referring to fig. 8 and 10, alternatively, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are respectively disposed at the middle positions of the adjacent sides of the first base 501 and the second base 503, so that the photosensitive assembly 100 can maintain a more stable movement, and the stability of the camera module is improved.

Referring to fig. 9 and 11, according to other embodiments of the present application, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 may be disposed at the same corner of the camera module, that is, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are led out from the same corner of the camera module, and the side edge of the driving shaft 223 of the first piezoelectric actuator 205 and the side edge of the driving shaft 223 of the second piezoelectric actuator 201 are perpendicular to each other, so that when conducting a circuit, the circuit can be conducted from the same corner upwards through a wire or a flexible board to the fixed substrate 400, thereby simplifying the circuit arrangement of the camera module. Of course, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 may be disposed at other positions, which is not limited by the present application.

According to other embodiments of the present application, the second piezoelectric actuator 201 may be disposed above the second base 503 to avoid occupying the lateral space of the camera module, so as to reduce the lateral size of the camera module, and make the structure of the camera module 10 more compact.

According to an embodiment of the present application, the camera module 10 further includes a guiding unit 250, and the guiding unit 250 may provide a guiding function for the movement of the photosensitive assembly 100.

Referring to fig. 11 to 14, the guide units 250 include a first guide unit 207 and a second guide unit 203, and each set of guide units 250 is disposed opposite to at least one piezoelectric actuator 200.

Specifically, the first guiding unit 207 is disposed on the first base 501, where the first guiding unit 207 is disposed opposite to the first piezoelectric actuator 205, that is, the first guiding unit 207 is disposed on one side of the first base 501 along the X axis direction, and the first piezoelectric actuator 205 is disposed on one side of the first base 501 opposite to the first base 205 along the X axis direction, where the first guiding unit 207 and the first piezoelectric actuator 205 may be disposed at the same height or at the same height, which is not limited in this disclosure.

The second guiding unit 203 is disposed on the second base 503, where the second guiding unit 203 is disposed opposite to the second piezoelectric actuator 201, that is, the second guiding unit 203 is disposed on one side of the second base 503 along the Y axis direction, and the second piezoelectric actuator 201 is disposed on the opposite side of the second base 503 along the Y axis direction, where the second guiding unit 203 and the second piezoelectric actuator 201 may be disposed at the same height or at the same height, which is not limited in this disclosure. Each set of guide units 250 is located on opposite sides and disposed in the same direction as at least one piezoelectric actuator 200.

Alternatively, the first guiding unit 207 may be a guiding rod with a length direction consistent with the X direction, at least one opening is formed in a position of the first base 501 where the guiding rod is disposed, the guiding rod is disposed in the opening to enable the guiding rod to be movably connected with the first base 501, and the moving direction of the first base 501 is controlled by the direction of the guiding rod, so that the first base 501 can move along the X axis more accurately.

The second guiding unit 203 may also be a guiding rod with a length direction consistent with the Y direction, at least one opening is formed in the position of the second base 503 where the guiding rod is arranged, the guiding rod is arranged in the opening to enable the guiding rod to be movably connected with the second base 503, and the direction of the second base 503 is controlled by the direction of the guiding rod, so that the second base 503 can move along the Y axis more accurately.

Both ends of the first guide unit 207 are fixed to the second base 503 such that the first base 501 can move in the X-axis direction under the guide of the first guide unit 207.

Both ends of the second guide unit 203 are fixed to the fixed substrate 400 such that the second base 503 can move in the Y-axis direction under the guide of the second guide unit 203.

Referring to fig. 12 to 14, according to another exemplary embodiment of the present application, at least one piezoelectric actuator 200 of the camera module may be eccentrically disposed, and the at least one piezoelectric actuator 200 may extend from a corner of the supporting assembly 500, so as to provide more space for the circuit board to extend upward.

Specifically, the first piezoelectric actuator 205 is disposed at a corner of the first base 501 along the X-axis direction, so that the driving shaft 223 of the first piezoelectric actuator 205 is disposed along the X-axis direction, and the second piezoelectric actuator 201 is disposed at a corner of the second base 503 adjacent to the first piezoelectric actuator 205 along the Y-axis direction, so that the driving shaft 223 of the second piezoelectric actuator 201 is disposed along the Y-axis direction, that is, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are respectively located at two adjacent sides of the same corner of the camera module.

The first guide unit 207 is disposed opposite to the first piezoelectric actuator 205 in the same direction, and the first guide unit 207 is disposed opposite to the first piezoelectric actuator 205, and the second guide unit 203 is disposed opposite to the second piezoelectric actuator 201 in the same direction, and the second guide unit 203 is disposed opposite to the second piezoelectric actuator 201.

Through the guiding function of the guiding unit 250, the moving direction of the supporting assembly 500 driving the photosensitive assembly 100 can be controlled more accurately, so as to achieve better optical anti-shake effect. It will be appreciated by those skilled in the art that the guide unit 250 may be a ball, a slider, or other structure capable of performing a guide function, and the present application is not limited thereto.

According to the embodiment of the application, when the optical anti-shake in the X-axis direction is performed, the first piezoelectric actuator 205 can generate a driving force along the X-axis direction, and pulse voltage is provided to the piezoelectric element 221 of the first piezoelectric actuator 205, so that the piezoelectric element 221 provides vibration of the driving shaft 223 in the X-axis direction, and the driving shaft 223 slightly reciprocates in the X-axis direction, so that the driving member 225 is driven to linearly move along the X-axis direction on the driving shaft 223, and the first base 501 is driven to move along the X-axis direction, and the photosensitive assembly 100 is driven to move along the X-axis direction. When the piezoelectric element 221 is controlled to retract rapidly, the drive shaft 223 also retracts rapidly in a direction opposite to the motion, and the mover 225 will be held in place despite friction due to the inertia of the movement of the mover 225.

When the optical anti-shake in the Y-axis direction is performed, the second piezoelectric actuator 201 can generate a driving force along the Y-axis direction, and pulse voltage is provided to the piezoelectric element 221 of the second piezoelectric actuator 201, so that the piezoelectric element 221 provides vibration of the driving shaft 223 in the Y-axis direction, and the driving shaft 223 slightly reciprocates in the Y-axis direction, so that the driving member 225 is driven to linearly move along the Y-axis direction on the driving shaft 223, and the second base 503 is driven to move along the Y-axis direction, and the photosensitive assembly 100 is driven to move along the Y-axis direction.

When the piezoelectric element 221 is controlled to retract sharply, the drive shaft 223 also will retract sharply in a direction opposite to the motion, and the mover 225 will be held in place despite friction due to the inertial effect of the movement of the mover 225. Of course, more than two piezoelectric actuators may be provided in the present application, and in the case of providing more than two piezoelectric drivers, the principle is the same as that of two piezoelectric drivers.

Referring to fig. 15, according to another exemplary embodiment of the present application, the first piezoelectric actuator 205 is disposed on the fixed substrate 400 and/or the outer frame 300, and drives the second base 503 and the first base 501 to move along the X-axis direction relative to the outer frame 300 at the same time, so as to drive the photosensitive assembly 100 to move along the X-axis direction, thereby realizing optical anti-shake along the X-axis direction.

The second piezoelectric actuator 201 is disposed on the second base 503, and drives the first base 501 to move along the Y-axis direction relative to the second base 503, so as to drive the photosensitive assembly 100 to move along the Y-axis direction, thereby realizing optical anti-shake in the Y-axis direction.

The second base 503 has a connecting portion, and is configured to be movably connected to the first base 501, that is, when the second base 503 moves, the first base 501 can be driven by the connecting portion to move in the same direction.

According to an embodiment of the present application, the first piezoelectric actuator 205 is disposed on an outer sidewall of the second base 503, and the first piezoelectric actuator 205 is fixed on the fixed substrate 400 and drives the second base 503 to move along the X-axis direction. According to some embodiments, the piezoelectric element 221 of the first piezoelectric actuator 205 is adhesively secured to the bottom surface of the fixed substrate 400. The adhesive can be soft rubber with elasticity.

The length direction of the driving shaft 223 of the first piezoelectric actuator 205 is identical to the X direction, and the other end of the driving shaft 223 may be fixed to the fixed substrate 400 by an adhesive having elasticity or the other end of the driving shaft 223 may be movably connected, that is, suspended on the fixed substrate 400 or suspended, etc., so that the repeated vibration is not affected, and the piezoelectric element 221 and the driving shaft 223 of the first piezoelectric actuator may be freely vibrated.

The movable member 225 may be fixed to the second base 503 by adhesion, or may be fixed in a direction integrally formed with the second base 503. The piezoelectric element 221 may be integrally formed with the fixed substrate 400. The fixing substrate 400 is used as a reference surface, and the first piezoelectric actuator 205 is fixed upward to the fixing substrate 400, so that the assembly accuracy of the first piezoelectric actuator 205 can be improved, and the first piezoelectric actuator 205 can maintain good flatness.

The second piezoelectric actuator 201 is disposed on an outer sidewall of the first base 501, and the second piezoelectric actuator 201 is fixed to the first base 501 and drives the first base 501 to move along the Y-axis direction. The piezoelectric element 221 of the second piezoelectric actuator 201 is fixed to the first base 501 by an adhesive, which may be a flexible adhesive having elasticity.

The length direction of the driving shaft 223 of the second piezoelectric actuator 201 is consistent with the Y direction, and the other end of the driving shaft 223 may be fixed to the second base 503 by an adhesive having elasticity or the other end of the driving shaft 223 may be movably connected, that is, suspended on the second base 503 or suspended, without affecting the repeated vibration. The piezoelectric element 221 of the second piezoelectric actuator 201 and the drive shaft 223 may be allowed to vibrate freely.

The movable member 225 may be fixed to the first base 501 by adhesion, or may be fixed in a direction integrally formed with the first base 501. The piezoelectric element 221 may be integrally formed with the second base 503.

Fig. 16 is a schematic view showing the positional structure of a piezoelectric actuator and a photosensitive member of an image pickup module and a terminal device and a fixing substrate according to an exemplary embodiment of the present application. Fig. 17 to 19 are schematic structural views showing a camera module and a piezoelectric actuator of a terminal device according to an exemplary embodiment of the present application.

Referring to fig. 16-19, at least one piezoelectric actuator 200 includes a piezoelectric element 221, a drive shaft 223, and a mover 225, according to an embodiment of the present application. Referring to fig. 16, at least one piezoelectric actuator 200 is located between the fixed substrate 400 and the photosensitive assembly 100, further describing that at least one piezoelectric actuator 200 is located in a gap between two parallel planes to which the fixed substrate 400 and the photosensitive assembly 100 respectively belong. The projection of the at least one piezoelectric actuator 200 in the optical axis direction of the camera module is located in the area of the supporting component 500, and the projection is located adjacent to the photosensitive component 100.

The piezoelectric element 221 generates a driving force, the moving member 225 is slidably contacted with the driving shaft 223 in a friction manner, the driving shaft 223 is connected to the piezoelectric element 221 by driving the moving member 225 to move along the length direction of the driving shaft 223 through the friction force between the driving shaft 223 and the moving member 225, and the piezoelectric element 221 can be arranged on the fixed substrate 400.

Compared with the driving mechanism in the prior art, the at least one piezoelectric actuator 200, which is used as a driving motor for driving the photosensitive assembly 100 to move, has the advantages of small volume, large thrust and high precision, and has a relatively simple driving structure, is suitable for driving heavier products, and is more suitable for chip anti-shake, prism anti-shake and other purposes. Compared with a magnetic driving mode, the magnetic driving type electromagnetic interference prevention device has a better electromagnetic interference prevention effect. Meanwhile, super-resolution control can be realized by utilizing the control precision advantage of the chip anti-shake.

According to an embodiment of the present application, the piezoelectric element 221 includes a piezoelectric substrate 2210 and a vibration substrate 2212, wherein the vibration substrate 2212 is located between the driving shaft 223 and the piezoelectric substrate 2210. At least one piezoelectric actuator 200 is electrically connected to the electrical connection of the stationary substrate 400 through a flexible printed circuit board. The piezoelectric element 221 of at least one piezoelectric actuator 200 is supplied with a pulse voltage through the circuit layer of the electrical connector of the stationary substrate 400, so that the piezoelectric element 221 provides vibration of the driving shaft 223 in the axial direction, and the driving shaft 223 is slightly reciprocated in the axial direction, thereby driving the mover 225 to linearly move on the driving shaft 223. And the rate at which the driving shaft 223 vibrates in the axial direction may be controlled by supplying pulse voltages of different frequencies to the vibration member, thereby changing the rate at which the mover 225 moves on the driving shaft 223.

According to an embodiment of the present application, the piezoelectric substrate 2210 is a substrate having a piezoelectric effect and contracting or expanding according to a polarization direction and an electric field direction, and the vibration substrate 2212 may have a constant thickness. The vibration substrate 2212 has a piezoelectric substrate 2210 connected to a single crystal type or a double crystal type, and applies an electric potential to the piezoelectric substrate 2210, and the difference in applied voltage is controlled by a controller to cause contraction and expansion actions of the piezoelectric substrate 2210 and the vibration substrate 2212.

According to an embodiment of the present application, the bending deformation principle of the composite layer of the piezoelectric substrate 2210 and the vibration substrate 2212. It is to be noted that the piezoelectric substrate 2210 and the vibration substrate 2212 have a disk shape, and in the present application, the piezoelectric substrate 2210 is mounted on the upper and lower surfaces of the vibration substrate 2212.

When the polarization direction of the piezoelectric substrate 2210 is different from the direction of the electric field caused by the potential difference across the piezoelectric substrate 2210, the piezoelectric substrate 2210 is deformed in the direction in which the width direction of the piezoelectric substrate 2210 is extended and the thickness thereof is reduced, and the vibration substrate 2212 is convexly deformed upward due to the expansion action of the piezoelectric substrate 2210.

When the polarization direction of the piezoelectric substrate 2210 and the direction of the electric field applied to the piezoelectric substrate 2210 are the same, the piezoelectric substrate 2210 is deformed and contracted so that its width becomes narrower and its thickness increases. The potential difference of the voltage applied to the piezoelectric substrate 2210 may be instantaneously inverted, and the piezoelectric substrate 2210 and the vibration substrate 2212 may also change the state of displacement accordingly, and if the above-described potential difference change is repeated, the piezoelectric substrate 2210 and the vibration substrate 2212 may continuously vibrate up and down.

According to an embodiment of the present application, the piezoelectric element 221 further includes a plurality of piezoelectric telescopic bodies 2214 and a plurality of electrodes, and the plurality of piezoelectric telescopic bodies 2214 and the plurality of electrodes are alternately laminated. When the piezoelectric element 221 has a laminated structure, a large displacement amount can be obtained even when a small electric field is applied. When the directions of the electric fields caused by the potential differences across the plurality of electrodes are different, the plurality of piezoelectric telescopic bodies 2214 deform, expand or contract, and the driving shaft 223 is driven to reciprocate due to the continuous deformation of the piezoelectric elements 221.

According to an embodiment of the present application, the piezoelectric element 221 takes a rectangular parallelepiped shape having sides along mutually orthogonal X, Y, and Z axes, respectively. In the present application, the piezoelectric element 221 has an X-axis direction length of 1mm, a Y-axis direction length of 1mm, and a Z-axis direction length (height) of 2mm. Of course, the present application is not limited in its size.

As shown in fig. 20, the plurality of electrodes are arranged on the plurality of piezoelectric extension bodies 2214, and the plurality of electrodes formed by alternately sandwiching the plurality of piezoelectric extension bodies 2214 are the internal electrodes 2216. The plurality of electrodes disposed on the surface of the plurality of piezoelectric telescopic bodies 2214 and disposed on the upper and lower portions thereof are referred to as an upper electrode 22162 and a lower electrode 22167, respectively.

Further, the plurality of piezoelectric telescopic bodies 2214 arranged on the surfaces and the side surfaces of the plurality of piezoelectric telescopic bodies 2214 are referred to as side electrodes 22161. When the piezoelectric body 2214 has 1 layer, a pair of electrodes are arranged on the upper and lower surfaces of the piezoelectric body 2214, and the side electrodes 22161 are connected to an external circuit by soldering or the like. When the piezoelectric body 2214 has a plurality of layers, electrode layers of the same polarity are connected by the side electrodes 22161, and thus the electrode layers of the positive and negative electrodes can be led out on both side surfaces.

Referring to fig. 18 and 19, according to an embodiment of the present application, the driving shaft 223 is adapted to have a cylindrical shape, a polygonal column shape, or a square shape, and the driving shaft 223 is fixed to the vibration substrate 2212. In the present application, the adhesive adheres to the central portion of the upper surface of the piezoelectric element 221. The driving shaft 223 may be composed of any one of carbon, heavy metal, carbide of heavy metal, boride of heavy metal, and nitride of heavy metal as a main material component.

In the present application, the vibration substrate 2212 is a piezoelectric ceramic rod or a piezoelectric ceramic plate, the vibration substrate 2212 and the driving shaft 223 can be connected by an adhesive manner or integrally formed by injection molding, the structure of the vibration substrate 2212 is simpler, the cost is lower, and the present application is not limited. The vibration substrate 2212 is not limited to piezoelectric ceramics, and may be other structures capable of driving the photosensitive element 100 to move by using the piezoelectric principle, and the present application is not limited thereto. One end of the vibration substrate 2212 is connected to the piezoelectric substrate 2210 and the other end is connected to the driving shaft 223, wherein the mover 225 may be in frictional contact with the driving shaft 223.

According to an embodiment of the present application, the driving shaft 223 is fixed on a composite layer of the piezoelectric substrate 2210 and the vibration substrate 2212, and is fixed on the piezoelectric substrate 2210 or the vibration substrate 2212 according to an uppermost layer of the composite layer.

According to an embodiment of the present application, the control unit of the image pickup module may generate bending deformation of the composite layer of the piezoelectric substrate 2210 and the vibration substrate 2212 by applying a voltage to the piezoelectric substrate 2210. As above, if the voltage applied to the piezoelectric substrate 2210 repeatedly varies in potential difference, the piezoelectric substrate 2210 and the vibration substrate 2212 may continuously vibrate up and down.

As shown in fig. 18, according to an embodiment of the present application, the voltage applied by the control unit to the piezoelectric substrate 2210 of the at least one piezoelectric actuator 200 may include a forward voltage and a contraction voltage, and the forward voltage and the contraction voltage are changed from the first voltage to a second voltage during a first period, and the second voltage is changed from the second voltage to the first voltage during a second period, wherein the first period of the forward voltage is longer than the second period, and the second period of the contraction voltage is longer than the first period.

The case of a in fig. 18 is a case where the non-conduction voltage of the piezoelectric substrate is in the original position. The forward and reverse voltages, which are shown in the case b in fig. 18, are configured to cause the piezoelectric substrate 2210 to bulge upward during the first period by a stroke a, and the forward and reverse voltages, which are shown in the case c in fig. 18, are configured to cause the piezoelectric substrate 2210 to bulge downward during the second period. After the first period of applying the forward voltage, when the mover 225 moves forward on the driving shaft 223 and the shrink voltage is applied, the mover 225 may retract on the driving shaft 223 during the second period, with a stroke B.

According to the embodiment of the present application, when the forward voltage is repeatedly applied to the piezoelectric substrate 2210, the piezoelectric substrate 2210 at one end stretches, so that the vibration substrate 2212 is convexly deformed into a bowl shape in one direction, and is quickly restored to the original flat plate-like state.

According to the embodiment of the present application, when the contraction voltage is repeatedly applied to the piezoelectric substrate 2210, the piezoelectric substrate 2210 at the other end expands and contracts, so that the vibration substrate 2212 is convexly deformed into a bowl shape in the other direction, and is quickly restored to the original flat plate-like state.

When the length direction of the driving shaft 223 of the at least one piezoelectric actuator 200 is set along the X-axis direction, the vibration substrate 2212 of the at least one piezoelectric actuator 200 drives the driving shaft 223 to perform a linear reciprocating motion along the X-axis direction, so that the driving shaft 223 drives the moving member 225 to drive the driven member to move along the X-axis direction through a friction force. When the length direction of the driving shaft 223 of the other at least one piezoelectric actuator 200 is set along the Y-axis direction, the vibration substrate 2212 of the at least one piezoelectric actuator 200 drives the driving shaft 223 to perform a linear reciprocating motion along the Y-axis direction, so that the driving shaft 223 drives the moving member 225 to drive the driven member to move along the Y-axis direction by the friction force. At least one piezoelectric actuator 200 can drive the driving shaft 223 through the vibration substrate 2212 and drive the moving member 225 to move the driven component along two directions (an X-axis direction and a Y-axis direction) perpendicular to each other on the imaging plane through friction force.

When the driving shaft 223 reciprocates in the longitudinal direction of the shaft, the moving member 225 is in frictional contact with the driving shaft 223, and when the vibration substrate 2212 is deformed into a bowl shape in one direction, the moving member 225 moves together with the driving shaft 223, and when the vibration substrate 2212 is quickly restored to the original flat plate shape, the driving shaft 223 also moves reversely, and since the moving member 225 is in a high-speed state, it cannot follow the movement of the driving shaft 223, and cannot return to the original position, but can stay at the position.

Therefore, when the movement of the vibration substrate 2212 occurs with a large deformation amplitude during one movement, the above-described movement can be repeated by repeatedly applying the pulse voltage, and the movement of the movement member 225 to the target position can be made. In addition, when the movement of the plurality of piezoelectric telescopic bodies 2214 occurs with a large deformation amplitude during one movement, the above-described movement can be repeated by repeatedly applying the pulse voltage, and the movement of the movement member 225 to the target position can be made.

It should be noted that, compared with the driving mechanism of the prior art, the at least one piezoelectric actuator 200 not only has the advantages of small volume, large thrust, high precision, relatively simple driving structure, suitability for driving heavier products, but also has smaller structure, relatively simple circuit, and suitability for use in a module with compact space, because the circuit extends through the side surface of the piezoelectric element 221.

According to an embodiment of the present application, the lens assembly 600 includes a lens and a lens carrier 401, and the lens is mounted in the lens carrier 401, i.e. the lens assembly 600 may be a focusing lens. In the embodiment of the present application, the lens assembly 600 may be an auto-focus lens, that is, the lens carrier 401 is provided with an auto-focus driving portion 420, and the auto-focus driving portion 420 is used for driving the lens to move along the optical axis direction so as to achieve auto-focus. Of course, the present application is not particularly limited as to the type of lens.

According to some embodiments of the present application, the lens may be mounted in the lens carrier 401 by means of adhesion, fastening or threading, etc., and the lens carrier 401 in the present application may be configured as an integrated structure, so that the lens carrier 401 has a function of a lens barrel, and is used for accommodating at least two lenses of the lens in the lens barrel, and the lens carrier 401 drives the lens to move to achieve automatic focusing. The integral structure of the application can reduce the size of the lens barrel in the lens and reduce the gap between the lens barrel and the carrier, thereby realizing the beneficial effect of reducing the size of the camera module. The lens assembly 600 is disposed on the fixed substrate 400, and realizes circuit conduction through the circuit layer of the fixed substrate 400.

The camera module 10 further includes an outer frame 300, and the outer frame 300 is located at the outer side of the camera module 10 and can be used as a housing thereof, and a gap exists between the supporting component 500 and the outer frame 300, so that when the optical anti-shake is performed, the supporting component 500 will not contact with the outer frame 300 to generate friction, thereby affecting the optical anti-shake effect.

The camera module 10 further includes a housing (not shown) that may be coupled to the outer frame 300 to protect various components of the camera module and to block electromagnetic waves generated during operation of the camera module to provide electromagnetic shielding. If electromagnetic waves generated when the camera module is driven are emitted to the outside or are emitted to the outside of the camera module, the electromagnetic waves may affect other electronic components, which may cause communication errors or malfunctions.

The material of the housing may be a metallic material, grounded through a ground plate so that the housing functions as an electromagnetic shield. The material of the shell can be plastic material, and the surface of the plastic is coated with conductive material to block electromagnetic waves. The application is not limited to the material of the housing.

Specifically, the housing has a through hole so that light passing through the lens assembly 600 can be incident on the photosensitive assembly 100 for imaging, and the housing and the outer frame 300 form a receiving cavity for receiving the lens assembly 600, the photosensitive assembly 100 and the driving part therein, so as to prevent the lens assembly 600, the photosensitive assembly 100 and the driving part from being damaged due to external impact.

Referring to fig. 21, according to the embodiment of the application, the auto-focus driving part 420 is disposed in any one corner region of the spare space of the fixed substrate 400, so that the lens carrier 401 drives the driving force of the lens moving along the optical axis direction.

The autofocus driving part 420 includes an autofocus coil 405 and an autofocus magnet 403, and the autofocus coil 405 is mounted on one side wall of the fixed substrate 400. The autofocus magnet 403 is mounted to a magnet mounting portion of the lens carrier 401 facing the autofocus coil 405.

Further, the autofocus magnet 403 may be embedded or attached to a side wall of the lens carrier 401, i.e., the autofocus magnet 403 may be embedded or attached to an outer side wall or an inner side wall of the lens carrier 401, so that the autofocus coil 405 and the autofocus magnet 403 may be disposed in a relative position.

The autofocus coil 405 and autofocus magnet 403 of the present application are disposed at the middle position of the side wall, so that the lens can keep a smooth movement without tilting. In other embodiments of the present application, the autofocus coil 405 and the autofocus magnet 403 may be disposed at one corner between the lens carrier 401 and the fixed substrate 400, which is not limited by the present application.

According to other embodiments, an autofocus adjustment sensor may be disposed on the inner side or adjacent side wall of the autofocus coil 405, where the autofocus adjustment sensor may sense a change in position of the lens carrier 401 with respect to the fixed substrate 400 during autofocus.

The conducting circuit of the auto-focusing coil 405 is electrically connected to the fixed substrate 400 through an auto-focusing flexible printed circuit board (FPC) 407, and when the auto-focusing coil 405 is powered on through the auto-focusing flexible printed circuit board (FPC) 407, a driving force along the optical axis direction is generated between the auto-focusing coil 405 and the auto-focusing magnet 403, so as to drive the lens carrier 401 to drive the lens to move along the optical axis direction, thereby realizing auto-focusing. Of course, the fixed substrate 400 may be a part of the auto focus driving part 420.

According to an embodiment of the present application, the auto-focus driving part 420 may further include a ball part having at least one receiving cavity between the lens carrier 401 and the fixed substrate 400 to receive the first ball part 409 for supporting and maintaining a distance between the lens carrier 401 and the fixed substrate 400 and providing a movement of the lens carrier 401 with respect to the base in the optical axis direction, and reducing a friction force of the lens carrier 401 when moving by rolling friction instead of sliding friction.

Specifically, the outer side wall of the lens carrier 401 has at least one first track along the optical axis direction (Z axis direction), the inner side wall of the fixed substrate 400 has at least one second track along the optical axis direction (Z axis direction), and the position of the first track is opposite to the position of the second track, so that at least one first accommodating cavity is formed between the lens carrier 401 and the fixed substrate 400, and the first accommodating cavity can accommodate the first ball portion 409 therein to provide the lens carrier 401 moving along the optical axis direction (Z axis direction) relative to the fixed substrate 400. Since the first accommodation chamber is formed by the provision of directionality, the first ball portion 409 can be moved in the Z-axis direction, and the moving direction of the lens can be made more accurate at the time of auto-focusing.

According to the embodiment of the application, the number of the first accommodating cavities may be 2, and when the accommodating cavities are disposed on one side where the autofocus magnet 403 is located, the two first accommodating cavities are disposed on two sides of the autofocus magnet 403, respectively, so that the lens carrier 401 moves more stably and does not tilt when autofocus is performed. Of course, the first accommodating cavity may be disposed at other positions of the lens carrier 401 and the fixed substrate 400, which is not limited by the present application. In other embodiments, a raised slider may be provided on the lens carrier 401, and the movement of the slider reduces the friction between the lens carrier 401 and the base.

Finally, it should be noted that: the foregoing description is only exemplary embodiments of the present disclosure, and not intended to limit the disclosure, but although the disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

A camera module, comprising:

a lens assembly;

a fixed substrate for setting the lens assembly, the fixed substrate including an electrical connector;

the photosensitive component is arranged below the fixed substrate, wherein,

the photosensitive assembly extends upwards and is electrically connected to the electric connecting piece of the fixed substrate.
The camera module of claim 1, wherein the photosensitive assembly is electrically connected to the electrical connection of the stationary substrate via a flexible printed circuit board.
The camera module of claim 1, further comprising:

the support assembly is arranged on the support assembly and comprises a first base and a second base, the second base is arranged on the support assembly in a sliding mode along a first direction, and the photosensitive assembly is arranged on the first base; the outer frame body is arranged on the outer frame body in a sliding way along a second direction; the first direction and the second direction are two directions perpendicular to each other in a plane where an optical axis direction along the axial direction of the lens is located.
The camera module of claim 1, wherein the electrical connection of the stationary substrate comprises:

the at least two LDS grooves are arranged on the surface of the fixed substrate, and conductive plating layers are plated on the inner surfaces of the at least two LDS grooves.
The camera module of claim 1, wherein the electrical connection of the stationary substrate comprises:

and a circuit layer is paved on the surface of the fixed substrate and used for conducting the photosensitive assembly, at least one piezoelectric actuator and the circuits of external electronic equipment.
The camera module of claim 1, wherein the electrical connection of the stationary substrate comprises:

at least two wires are integrally formed in the fixed substrate.
A camera module according to claim 3, further comprising:

at least one piezoelectric actuator for driving movement of a support assembly, the at least one piezoelectric actuator comprising:

a first piezoelectric actuator driving the first base to move in a first direction;

and the second piezoelectric actuator drives the second base to move along a second direction.
The camera module of claim 7, wherein each piezoelectric actuator comprises a piezoelectric substrate and a vibration substrate, wherein,

One end of the vibration substrate is connected to the piezoelectric substrate, and an electric potential is applied to the piezoelectric substrate to cause contraction or expansion of the piezoelectric substrate and the vibration substrate, and the vibration substrate drives the driving shaft to move.
The camera module of claim 7, wherein each piezoelectric actuator comprises a plurality of piezoelectric telescopic bodies and a plurality of electrodes, wherein,

the piezoelectric telescopic bodies and the electrodes are alternately laminated, when the directions of electric fields caused by potential differences on the electrodes are different, the piezoelectric telescopic bodies deform, and the continuous deformation of the piezoelectric element drives the driving shaft to reciprocate.
The camera module of claim 7, wherein the at least one piezoelectric actuator comprises:

a first piezoelectric actuator driving the second base to move in a first direction;

and a second piezoelectric actuator driving the first base to move in a second direction.
The camera module of claim 7, wherein each piezoelectric actuator comprises a moving member, a drive shaft, and a piezoelectric element, the drive shaft being connected to the piezoelectric element, the moving member being slidably and frictionally disposed on the drive shaft.
The camera module of claim 7, further comprising:

the first guiding unit is arranged on one side opposite to the first piezoelectric actuator and used for guiding the first base to move along a first direction;

and the second guiding unit is arranged on one side opposite to the second piezoelectric actuator and used for guiding the second base to move along a second direction.
The camera module of claim 12, wherein the first piezoelectric actuator and the second piezoelectric actuator are in a same horizontal plane.
The camera module of claim 13, wherein the first piezoelectric actuator and the second piezoelectric actuator are disposed outside the photosensitive assembly.
The camera module of claim 14, wherein the first piezoelectric actuator is located on an outer sidewall of the first base.
The camera module of claim 14, wherein the second piezoelectric actuator is located on an outer sidewall of the second base.
The camera module of claim 13, wherein the first piezoelectric actuator and the first guide unit are disposed at intermediate positions on opposite sides of the first base along the first direction, respectively.
The camera module of claim 13, wherein the second piezoelectric actuator and the second guide unit are disposed at intermediate positions on opposite sides of the second base along the second direction, respectively.
The camera module of claim 13, wherein the first piezoelectric actuator and the first guide unit are disposed at diagonal positions on opposite sides of the first base along the first direction, respectively.
The camera module of claim 13, wherein the second piezoelectric actuator and the second guide unit are disposed at diagonal positions on opposite sides of the second base along the second direction, respectively.
The camera module of claim 13, wherein the first piezoelectric actuator and the second piezoelectric actuator are located at a same corner of the camera module.
A camera module, comprising:

a lens assembly;

a fixed substrate for setting the lens assembly, the fixed substrate including an electrical connector;

the photosensitive assembly is arranged below the fixed substrate;

the photosensitive assembly is arranged on the supporting assembly;

The photosensitive assembly is in transmission connection with the at least one piezoelectric actuator, and the at least one piezoelectric actuator drives the supporting assembly to drive the photosensitive assembly to move on an imaging plane, wherein the at least one piezoelectric actuator is electrically connected with the electric connecting piece of the fixed substrate.
The camera module of claim 22, wherein the at least one piezoelectric actuator is electrically connected to the electrical connection of the stationary substrate via a flexible printed circuit board.
The camera module of claim 22, wherein each piezoelectric actuator comprises a mover, a drive shaft, and a piezoelectric element, wherein,

the driving shaft is connected to the piezoelectric element;

the moving member is slidably and frictionally disposed on the driving shaft.
The camera module of claim 24, wherein each piezoelectric actuator comprises a piezoelectric substrate and a vibration substrate, wherein,

one end of the vibration substrate is connected to the piezoelectric substrate, and an electric potential is applied to the piezoelectric substrate to cause contraction or expansion of the piezoelectric substrate and the vibration substrate, and the vibration substrate drives the driving shaft to move.
The camera module of claim 24, wherein each piezoelectric actuator comprises a plurality of piezoelectric telescopic bodies and a plurality of electrodes, wherein,

the piezoelectric telescopic bodies and the electrodes are alternately laminated, when the directions of electric fields caused by potential differences on the electrodes are different, the piezoelectric telescopic bodies deform, and the continuous deformation of the piezoelectric element drives the driving shaft to reciprocate.
The camera module of claim 22, wherein the electrical connection of the stationary substrate comprises:

the at least two LDS grooves are arranged on the surface of the fixed substrate, and conductive plating layers are plated on the inner surfaces of the at least two LDS grooves.
The camera module of claim 22, wherein the electrical connection of the stationary substrate comprises:

and a circuit layer is paved on the surface of the fixed substrate and used for conducting the photosensitive assembly, the at least one piezoelectric actuator and the circuits of external electronic equipment.
The camera module of claim 22, wherein the electrical connection of the stationary substrate comprises:

at least two wires are integrally formed in the fixed substrate.
The camera module of claim 22, wherein the support assembly comprises:

The second base is slidably arranged on the outer frame body along a second direction;

the first base is slidably arranged on the second base along a first direction, and the photosensitive component is arranged on the first base; wherein,

the first direction and the second direction are two directions perpendicular to each other in a plane along the optical axis direction of the axial direction of the lens.
The camera module of claim 30, wherein the at least one piezoelectric actuator comprises:

a first piezoelectric actuator driving the first base to move in a first direction;

and the second piezoelectric actuator drives the second base to move along a second direction.
The camera module of claim 30, wherein the at least one piezoelectric actuator comprises:

a first piezoelectric actuator driving the second base to move in a first direction;

and a second piezoelectric actuator driving the first base to move in a second direction.
The camera module of claim 31, further comprising:

the first guiding unit is arranged on one side opposite to the first piezoelectric actuator and used for guiding the first base to move along a first direction;

And the second guiding unit is arranged on one side opposite to the second piezoelectric actuator and used for guiding the second base to move along a second direction.
The camera module of claim 32, wherein the first piezoelectric actuator and the second piezoelectric actuator are in a same horizontal plane.
The camera module of claim 34, wherein the first piezoelectric actuator and the second piezoelectric actuator are disposed outside of the photosensitive assembly.
The camera module of claim 35, wherein the first piezoelectric actuator is located on an outer sidewall of the first base.
The camera module of claim 35, wherein the second piezoelectric actuator is located on an outer sidewall of the second base.
The camera module of claim 33, wherein the first piezoelectric actuator and the first guide unit are disposed at intermediate positions on opposite sides of the first base along the first direction, respectively.
The camera module of claim 33, wherein the second piezoelectric actuator and the second guide unit are disposed at intermediate positions on opposite sides of the second base along the second direction, respectively.
The camera module of claim 33, wherein the first piezoelectric actuator and the first guide unit are disposed at diagonal positions on opposite sides of the first base along the first direction, respectively.
The camera module of claim 33, wherein the second piezoelectric actuator and the second guide unit are disposed at diagonal positions on opposite sides of the second base along the second direction, respectively.
The camera module of claim 34, wherein the first piezoelectric actuator and the second piezoelectric actuator are located at a same corner of the camera module.
The camera module of claim 22, wherein the at least one piezoelectric actuator is disposed between the photosensitive member and the stationary substrate, and a projection of the at least one piezoelectric actuator in an optical axis direction of the camera module is located in a region of the support member.
The camera module of claim 22, wherein the photosensitive assembly is electrically connected to an electrical connection of the stationary substrate.
A camera module, comprising:

a lens assembly;

a fixed substrate for setting the lens assembly;

The photosensitive assembly is arranged below the fixed substrate;

the photosensitive assembly is arranged on the supporting assembly;

the at least one piezoelectric actuator is arranged between the photosensitive assembly and the fixed substrate, the photosensitive assembly is in transmission connection with the at least one piezoelectric actuator, and the projection of the at least one piezoelectric actuator in the direction of the optical axis of the camera module is positioned in the area of the supporting assembly and used for driving the supporting assembly to move.
The camera module of claim 45, wherein the at least one piezoelectric actuator is electrically connected to the electrical connection of the stationary substrate via a flexible printed circuit board.
The camera module of claim 45, wherein each piezoelectric actuator comprises a moving member, a drive shaft, and a piezoelectric element, the drive shaft being coupled to the piezoelectric element, the moving member being slidably and frictionally disposed on the drive shaft.
The camera module of claim 47, wherein each piezoelectric actuator comprises a piezoelectric substrate and a vibration substrate, wherein,

one end of the vibration substrate is connected to the piezoelectric substrate, and an electric potential is applied to the piezoelectric substrate to cause contraction or expansion of the piezoelectric substrate and the vibration substrate, and the vibration substrate drives the driving shaft to move.
The camera module of claim 47, wherein each piezoelectric actuator comprises a plurality of piezoelectric telescopic bodies and a plurality of electrodes, wherein,

the piezoelectric telescopic bodies and the electrodes are alternately laminated, when the directions of electric fields caused by potential differences on the electrodes are different, the piezoelectric telescopic bodies deform, and the continuous deformation of the piezoelectric element drives the driving shaft to reciprocate.
The camera module of claim 45, wherein the electrical connection of the stationary substrate comprises:

the at least two LDS grooves are arranged on the surface of the fixed substrate, and conductive plating layers are plated on the inner surfaces of the at least two LDS grooves.
The camera module of claim 45, wherein the electrical connection of the stationary substrate comprises:

and a circuit layer is paved on the surface of the fixed substrate and used for conducting the photosensitive assembly, the at least one piezoelectric actuator and the circuits of external electronic equipment.
The camera module of claim 45, wherein the electrical connection of the stationary substrate comprises:

at least two wires are integrally formed in the fixed substrate.
The camera module of claim 45, wherein the support assembly comprises:

The second base is slidably arranged on the outer frame body along a second direction;

the first base is slidably arranged on the second base along a first direction, and the photosensitive component is arranged on the first base; wherein,

the first direction and the second direction are two directions perpendicular to each other in a plane along the optical axis direction of the axial direction of the lens.
The camera module of claim 53, wherein the at least one piezoelectric actuator comprises:

a first piezoelectric actuator driving the first base to move in a first direction;

and the second piezoelectric actuator drives the second base to move along a second direction.
The camera module of claim 53, wherein the at least one piezoelectric actuator comprises:

a first piezoelectric actuator driving the second base to move in a first direction;

and a second piezoelectric actuator driving the first base to move in a second direction.
The camera module of claim 54, further comprising:

the first guiding unit is arranged on one side opposite to the first piezoelectric actuator and used for guiding the first base to move along a first direction;

And the second guiding unit is arranged on one side opposite to the second piezoelectric actuator and used for guiding the second base to move along a second direction.
The camera module of claim 55, wherein the first piezoelectric actuator and the second piezoelectric actuator are in a same horizontal plane.
The camera module of claim 57, wherein the first piezoelectric actuator and the second piezoelectric actuator are disposed outside the photosensitive assembly.
The camera module of claim 58, wherein the first piezoelectric actuator is located on an outer sidewall of the first base.
The camera module of claim 58, wherein the second piezoelectric actuator is located on an outer sidewall of the second base.
The camera module of claim 56, wherein the first piezoelectric actuator and the first guide unit are disposed at intermediate positions on opposite sides of the first base along the first direction, respectively.
The camera module of claim 56, wherein the second piezoelectric actuator and the second guide unit are disposed at intermediate positions on opposite sides of the second base along the second direction, respectively.
The camera module of claim 56, wherein the first piezoelectric actuator and the first guide unit are disposed at opposite diagonal positions along the first direction on opposite sides of the first base.
The camera module of claim 56, wherein the second piezoelectric actuator and the second guide unit are disposed at diagonal positions on opposite sides of the second base along the second direction, respectively.
The camera module of claim 57, wherein the first piezoelectric actuator and the second piezoelectric actuator are located at a same corner of the camera module.
The camera module of claim 45, wherein the photosensitive assembly is electrically connected to an electrical connection of the stationary substrate.
A terminal device comprising a camera module according to any one of claims 1 to 66.