WO2022166924A1

WO2022166924A1 - Camera module and terminal device

Info

Publication number: WO2022166924A1
Application number: PCT/CN2022/075187
Authority: WO
Inventors: 黄桢; 叶林敏; 卞强龙; 阙嘉耀; 姚施琴
Original assignee: 宁波舜宇光电信息有限公司
Priority date: 2021-02-07
Filing date: 2022-01-30
Publication date: 2022-08-11
Also published as: CN116888968A

Abstract

The present application provides a camera module and a terminal device. The camera module comprises: a lens assembly; a fixed substrate, which is used for the arrangement of the lens assembly, wherein the fixed substrate comprises an electrical connection member; and a photosensitive assembly, which is arranged below the fixed substrate, wherein the photosensitive assembly extends upwards and is electrically connected to the electrical connection member of the fixed substrate. In the technical solution of the present application, a piezoelectric actuator is used for driving the photosensitive assembly to move relative to the lens assembly, so as to realize chip stabilization; and the photosensitive assembly is fixed below the fixed substrate, such that a circuit board of the photosensitive assembly is electrically connected to the electrical connection member of the fixed substrate, thereby reducing the influence of the electrical connection member on the movement of the photosensitive assembly.

Description

Camera module and terminal equipment

technical field

The present application relates to the field of optoelectronic technology, and in particular, to a camera module and a terminal device.

Background technique

With the increasing demand of consumers for mobile phone photography, the functions of mobile phone cameras (ie camera modules) are becoming more and more abundant, and functions such as portrait shooting, telephoto shooting, optical zoom, and optical image stabilization are integrated into the limited-volume camera. , and the autofocus and optical image stabilization functions often need to rely on optical actuators (sometimes also called motors) to achieve.

With the increasingly high imaging quality requirements of mobile phone camera modules, the volume and weight of the lens are getting larger and larger, and the requirements for the driving force of the motor are also getting higher and higher. The occupied volume of the motor increases with the increase of the lens. Increase. However, since current electronic devices (such as mobile phones) also have great limitations on the size of the camera module, it is difficult to increase the driving force provided by the motor as the lens develops to larger size and weight. Under the premise that the driving force is limited, the heavier the lens, the shorter the travel of the motor that can drive the lens to move, which affects the focusing and anti-shake ability. On the other hand, the heavier the lens, the slower the motor can drive the lens to move, and the longer the lens takes to reach the predetermined compensation position, which will also affect the focus and anti-shake effect.

As the requirements for miniaturization of mobile devices continue to increase, so does the density of components inside the motor. There are magnets and coils in the motor, which are used to generate the necessary magnetic field to drive the movement of the lens. When the distance between the two magnets in the motor is too close (less than 7mm), the internal magnetic fields will interact with each other, causing the magnets to move or shake. Focus and image quality of the lens.

SUMMARY OF THE INVENTION

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

According to an aspect of the present application, a camera module is proposed, comprising: a lens assembly; a fixed base plate for arranging the lens assembly, the fixed base plate including an electrical connector; a photosensitive assembly disposed below the fixed base plate, Wherein, the photosensitive component extends upward and is electrically connected to the electrical connector of the fixed substrate.

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

According to some embodiments, the camera module further includes: a supporting component, the photosensitive component is disposed on the supporting component, and the supporting component includes a first base and a second base, which are slidably disposed on the supporting component along the first direction. on the second base, and the photosensitive component is arranged on the first base; it is slidably arranged on the outer frame along the second direction; wherein, the first direction and the second direction are perpendicular to the The two directions perpendicular to each other in the plane where the optical axis direction of the lens axis is located.

According to some embodiments, the electrical connector of the fixed substrate includes: at least two LDS grooves disposed on the surface of the fixed substrate, and the inner surfaces of the at least two LDS grooves are plated with a conductive plating layer.

According to some embodiments, the electrical connector of the fixed substrate includes: a circuit layer is laid on the surface of the fixed substrate for conducting the circuit of the photosensitive component, at least one piezoelectric actuator and external electronic equipment.

According to some embodiments, the electrical connector of the fixed substrate includes: at least two wires are integrally formed in the fixed substrate.

According to some embodiments, the camera module further includes: at least one piezoelectric actuator for driving the support assembly to move, the at least one piezoelectric actuator includes: a first piezoelectric actuator for driving the first piezoelectric actuator The base moves along the first direction; the second piezoelectric actuator drives the second base to move along the second direction.

According to some embodiments, each piezoelectric actuator includes a piezoelectric substrate and a vibrating substrate, wherein one end of the vibrating substrate is connected to the piezoelectric substrate, and an electrical potential is applied to the piezoelectric substrate to cause the pressure Contraction or expansion of the electrical substrate and the vibrating substrate, which drives the drive shaft to move.

According to some embodiments, each piezoelectric actuator includes a plurality of piezoelectric stretchable bodies and a plurality of electrodes, wherein the plurality of piezoelectric stretchable bodies and the plurality of electrodes are alternately stacked, and when the plurality of electrodes are on the When the direction of the electric field caused by the potential difference is different, the plurality of piezoelectric stretching bodies are deformed, and the continuous deformation of the piezoelectric element drives the drive shaft to reciprocate.

According to some embodiments, the at least one piezoelectric actuator includes: a first piezoelectric actuator for driving the second base to move in a first direction; a second piezoelectric actuator for driving the first The base moves in the 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, the moving member being slidably and frictionally disposed on the drive shaft .

According to some embodiments, the camera module further includes: a first guide unit, disposed on the opposite side of the first piezoelectric actuator, for guiding the first base to move in a first direction; a second guide unit The unit is disposed on the opposite side of the second piezoelectric actuator, and is used for guiding the second base to move in the second direction.

According to some embodiments, the first piezoelectric actuator and the second piezoelectric actuator are located on the same level.

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

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 on opposite sides of the first base along the first direction.

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

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

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 proposed, including the above camera module.

Based on the above-mentioned camera module and terminal equipment, the photosensitive component is disposed below the fixed substrate, and the photosensitive component is electrically connected to the electrical connector of the fixed substrate, thereby reducing the influence of the electrical connection component on the movement of the photosensitive component.

Based on the above-mentioned camera module and terminal equipment, the piezoelectric actuator is used to convert electrical energy into elastic deformation to drive the photosensitive component to move, and by electrically connecting the piezoelectric actuator to the electrical connector of the fixed substrate, Reducing the influence of the electrical connection parts on the movement of the photosensitive assembly can further improve the anti-shake effect.

Based on the above-mentioned camera module and terminal equipment, the piezoelectric actuator is used to convert electrical energy into elastic deformation to drive the photosensitive component to move, and the piezoelectric actuator is arranged between the photosensitive component and the fixed substrate , to achieve a more compact structure of the camera module.

In order to further understand the features and technical content of the present application, please refer to the following detailed descriptions and drawings related to the present application, but these descriptions and drawings are only used to illustrate the present application, and do not limit the scope of protection of the present application. .

Description of drawings

The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Herein, the accompanying drawings, which constitute a part of this disclosure, are provided to provide a further understanding of the disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure, and do not constitute an improper limitation of the present disclosure. In the attached picture:

1-2 are schematic structural diagrams of a camera module and a terminal device according to an exemplary embodiment of the present application.

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

FIG. 4 shows a schematic structural diagram of a first piezoelectric actuator and a second piezoelectric actuator of a camera module and a terminal device according to an exemplary embodiment of the present application.

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

FIG. 6 shows a schematic diagram of a connection relationship between a piezoelectric actuator of a camera module and a terminal device and a fixed substrate according to an exemplary embodiment of the present application.

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

FIG. 16 is a schematic diagram showing the positional structure of the piezoelectric actuator, the photosensitive component and the fixed substrate of the camera module and the terminal device according to the exemplary embodiment of the present application.

17-19 are schematic structural diagrams of a camera module and a piezoelectric actuator of a terminal device according to exemplary embodiments of the present application.

FIG. 20 shows a schematic structural diagram of a piezoelectric element of a piezoelectric actuator of a camera module and a terminal device according to an exemplary embodiment of the present application.

FIG. 21 shows a schematic structural diagram of a fixed substrate of a camera module and a terminal device according to an exemplary embodiment of the present application.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated descriptions 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 in order to give a thorough understanding of the embodiments of the present disclosure. However, one skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of these specific details, or with other ways, 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 claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

A camera module and a terminal device according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1-2 , the camera module 10 according to the exemplary embodiment of the present application includes a fixed substrate 400 , a lens assembly 600 , a photosensitive assembly 100 , and at least one piezoelectric actuator 200 and a support assembly 500 . The fixed substrate 400 is used to set the lens assembly 600 . The photosensitive assembly 100 is disposed under the fixed substrate 400 and disposed on the support assembly 500 . At least one piezoelectric actuator 200 drives the support element 500 to drive the photosensitive element 100 to move on the imaging plane, wherein the at least one piezoelectric actuator 200 is electrically connected to the fixed substrate 400 . The fixed substrate 400 , the lens assembly 600 , at least one piezoelectric actuator 200 , the photosensitive assembly 100 and the support assembly 500 can be detachably fixed together. Of course, the number of the at least one piezoelectric actuator 200 is not limited in this embodiment, and can be arbitrarily set according to actual needs.

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

The fixed substrate 400 includes electrical connectors, and the fixed substrate is used to set the lens assembly 600 . The photosensitive component is disposed under the fixed substrate 400 , wherein the photosensitive component 100 is electrically connected to the electrical connector of the fixed substrate 400 .

The fixed substrate 400 has a mounting hole in which the lens assembly 600 can be mounted. The surface of the fixed substrate 400 is covered with a circuit layer of electrical connectors, and the fixed substrate 400 is connected to the external electronic device mainboard through a flexible board and a connector to conduct conduction. The circuit layer can be implemented as a flexible board FPC, a flexible board FPC is arranged on the surface of the fixed substrate 400, the flexible board FPC can be attached to the upper surface of the fixed substrate 400, and the flexible board FPC can pass through the flexible board. The board FPC realizes the connection with the external electronic equipment. The piezoelectric actuator 200 and the photosensitive component 100 extend upward through wires or a flexible board and are electrically connected to the flexible board FPC on the surface of the fixed substrate 400 to realize circuit conduction. At least one piezoelectric actuator 200 and the photosensitive component 100 can be electrically connected to the circuit layer of the fixed substrate 400 through a connection circuit, so as to realize the circuit conduction of the camera module 10 .

At least one piezoelectric actuator 200 and the photosensitive element 100 are placed under the fixed substrate 400 , so it is necessary to extend the at least one piezoelectric actuator 200 and the photosensitive element 100 upward through a wire or a flexible board and electrically connect to the surface of the fixed substrate 400 The circuit layer of the electrical connector can be electrically connected through the upward extension of the circuit of the wire or the flexible board, which can make full use of the height space of the camera module 10, make the structure of the camera module 10 more compact, and reduce the sensitivity of the electrical connection parts to light. The effect of component movement.

Compared with the circuit board of the photosensitive assembly 100 that is connected to the external circuit, the embodiments of the present 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 electrical connectors, and at least one piezoelectric actuator 200 is electrically connected to the electrical connectors of the fixed substrate 400 . The fixed 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. The electrical connector of the fixed substrate 400 is used to electrically connect at least one piezoelectric actuator to reduce circuit board components. set up.

The fixed substrate 400 is disposed between the lens assembly 600 and the photosensitive assembly 100 , and the lens assembly 600 is disposed on the 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 the 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 , the inner surface of the at least two LDS grooves is plated with a conductive plating layer, and the depth of the LDS grooves is not greater than 20-30 μm , the width is not less than 60μm.

LDS (laser direct structuring) is used in the tank, and a conductive coating, such as nickel-palladium-gold plating, can be plated on the surface of the LDS tank, so as to avoid the interference of other metals inside, so as to realize the formation of at least one piezoelectric actuator 200 . The connection circuit is connected to the conductive plating layer in the LDS groove of the fixed substrate 400 .

According to other embodiments of the present application, at least two wires can also be integrally molded into the fixed substrate 400 through Insert Molding technology, so as to connect the connection circuit of the at least one piezoelectric actuator 200 with the at least two wires Electrically connected to realize the derived circuit.

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

Optionally, the circuit board can also be a reinforced FPC (Flexible Printed Circuit, flexible printed circuit board). FPC and reinforcing sheet, the reinforcing sheet can be a sheet with good heat dissipation performance such as steel sheet.

According to example embodiments, the FPC may extend upward through the edges or corners of the camera module with excess space, and perform circuit connection with the circuit layer of the fixing substrate 400 . In this way, compared with the traditional connection method, the influence on the movement of the photosensitive assembly can be reduced, and the anti-shake effect can be further improved. In addition, the length of the circuit board can be reduced and wiring can be made simpler.

The photosensitive element 104 is arranged on the circuit board and is electrically connected to the circuit board. The photosensitive element 104 can sense light and convert the light signal into an electrical signal through its own photosensitive function for imaging. The side of the photosensitive element 104 away from the circuit board includes a photosensitive element area and a non-photosensitive area arranged around the photosensitive area.

According to example embodiments, the photosensitive assembly 100 may further include a filter assembly 108 . The filter assembly 108 may include a filter and a bracket 102, the filter is arranged above the photosensitive chip, and is 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 together to form a closed space. The photosensitive element 104 is accommodated in the closed space, which improves the sealing of the photosensitive chip, and ensures that the imaging of the photosensitive element 104 is not affected by dust during the production or use of the camera module. According to some embodiments, optical image stabilization may be implemented by driving the entire photosensitive assembly 100 to move.

According to other example embodiments, the bracket 102 can be replaced with an encapsulation body, that is, an encapsulation body is formed on the line, the encapsulation body can be used to embed the electronic components and/or the non-photosensitive area of the photosensitive element 104, and the encapsulation body can be integrally formed in the The circuit board can not only reduce the height of the camera module, but also protect the electronic components from pollution and damage. The package body can also replace the above-mentioned bracket 102 for supporting the optical filter.

As shown in FIG. 4 , according to the embodiment of the present application, 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 realize along the Movement in a plane perpendicular to the direction of the optical axis. At least one piezoelectric actuator 200 includes a first piezoelectric actuator 205 and a second piezoelectric actuator 201, and drives the first base to move in a first direction. The second base is driven to move in the second direction.

According to the embodiment of the present application, the photosensitive assembly 100 is placed on the first base 501, and the first base 501 is driven by the first piezoelectric actuator 205 to drive the photosensitive assembly 100 to move along the first direction (X direction), Achieve optical image stabilization in the first direction. The first base 501 is placed on the second base 503, and the second base 503 is driven by the second piezoelectric actuator 201 to drive the first base 501 to move in the second direction (Y direction), thereby driving the photosensitive The assembly 100 moves along the second direction to achieve optical image stabilization in the second direction. The first direction and the second direction are two directions perpendicular to each other along the imaging plane,

In this application, the first direction is the X-axis direction, and the second direction is the Y-axis direction as an example. In this application, two different bases are used to realize the movement of the photosensitive assembly 100 along two directions perpendicular to each other on the imaging plane, and the optical anti-shake in the two directions is driven separately, so that mutual interference will not occur.

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, namely the photosensitive assembly 100, the first base 501, The second base 503 and the outer frame body 300 are arranged in sequence along the optical axis direction. The photosensitive assembly 100 is connected with at least one piezoelectric actuator 200 in a driving manner. The first piezoelectric actuator 205 is disposed on the second base 503 and drives the first base 501 relative to the second base 503 along the X-axis. moving in the X-axis direction, thereby driving the photosensitive assembly 100 to move along the X-axis direction, so as to realize optical anti-shake in the X-axis direction.

The second base 503 has a connecting portion for movably connecting with the first base 501, that is, when the second base 503 moves, the first base 501 can be driven to move in the same direction through the connecting portion, and the second electric The actuator 201 is arranged on the fixed substrate 400 and/or the outer frame 300, and drives the second base 503 and the first base 501 to move relative to the outer frame 300 along the Y-axis direction, thereby driving the photosensitive assembly 100 to move along the Y-axis direction , to achieve optical image stabilization in the Y-axis direction.

As shown in FIG. 5 , balls and tracks are used as guide structures to define the moving directions of the first base 501 and the second base 503 .

Specifically, there is at least one accommodating cavity between the first base 501 and the second base 503 that can accommodate the second ball portion 110 for supporting and maintaining the distance between the first base 501 and the second base 503 , and provides the movement of the first base 501 relative to the second base 503 along the X-axis direction, and replaces the sliding friction with rolling friction to reduce the frictional force during movement. Specifically, the bottom side of the first base 501 and the top side of the second base 503 have at least one rail along the X-axis direction, the rails are positioned opposite to each other and form an accommodation cavity along the X-axis direction, and the second ball portion 110 accommodate it. According to the embodiment of the present application, the number of accommodating cavities and balls is 4, and they are respectively located at four corners of the first base 501 and the second base 503 .

There is at least one accommodating cavity between the second base 503 and the outer frame 300 for accommodating the third ball portion 111 for supporting and maintaining the distance between the second base 503 and the outer frame 300 and providing a second The movement of the base 503 relative to the outer frame body 300 along the Y-axis direction, and the sliding friction is replaced by rolling friction, so as to reduce the frictional force during movement. Specifically, the bottom side of the second base 503 and the top side of the outer frame body 300 have at least one rail along the Y-axis direction, the rails are located opposite to each other and form an accommodation cavity along the Y-axis direction, which accommodates the third ball portion 111 in. According to the embodiment of the present application, the number of accommodating cavities and balls is 4, and they are respectively located at four corners of the first base 501 and the second base 503 .

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

According to the embodiment of the present application, the piezoelectric element 221 of the first piezoelectric actuator 205 is fixed on the second base 503 by means of adhesive bonding, and the adhesive may be elastic soft glue. The longitudinal direction of the drive shaft 223 is consistent with the X direction, and the other end of the drive shaft 223 may also be fixed on the second base 503 through an elastic adhesive, or the other end of the drive shaft 223 may be connected to the second base 503 . The seat 503 is movably connected, that is, suspended on the second base 503 or suspended in the air, without affecting its repeated vibration, so that the piezoelectric element 221 and the drive shaft 223 of the first piezoelectric actuator 205 can vibrate freely. Can. The moving member 225 may be fixed to the first base 501 by means of bonding, or may be fixed in a direction integrally formed with the first base 501 , which is not specifically limited in this application. In addition, the piezoelectric element 221 may be formed integrally with the second base 503 .

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

Referring to FIG. 6 , it can be seen that the piezoelectric element 221 of the second piezoelectric actuator 201 is fixed to the bottom surface of the fixed substrate 400 by means of adhesive bonding. The adhesive can be flexible soft glue. The longitudinal direction of the drive shaft 223 is consistent with the Y direction, and the other end of the drive shaft 223 may also be fixed on the fixed base plate 400 by an elastic adhesive, or the other end of the drive shaft 223 may be movably connected to the fixed base plate 400 , that is, suspended on the fixed substrate 400 or suspended so as not to affect its repeated vibration, and the piezoelectric element 221 and the drive shaft 223 of the second piezoelectric actuator 201 can vibrate freely. The moving member 225 may be fixed to the second base 503 by means of bonding, or may be fixed in a direction integrally formed with the second base 503 , which is not specifically limited in this application. In addition, the piezoelectric element 221 may be formed integrally with the fixed substrate 400 .

According to the embodiment of the present application, using the fixed substrate 400 as a reference plane, the second piezoelectric actuator 201 is fixed upward on the fixed substrate 400, which can improve the assembly accuracy of the second piezoelectric actuator 201, and can also make the second piezoelectric actuator 201 higher. Piezoelectric actuator 201 maintains good flatness.

According to another embodiment of the present application, the second piezoelectric actuator 201 may be fixed on the outer frame body 300 by means of adhesive bonding, the longitudinal direction of the driving shaft 223 is consistent with the Y direction, and the driving shaft 223 The other end can also be fixed on the outer frame body 300 by an elastic adhesive, or the other end of the drive shaft 223 can be movably connected with the outer frame body 300, that is, suspended on the outer frame body 300 or suspended in the air, etc. It only needs to vibrate repeatedly, and the piezoelectric element 221 and the drive shaft 223 of the second piezoelectric actuator 201 may vibrate freely. Of course, when a plurality of second piezoelectric actuators 201 are used, they may be fixed to the fixed substrate 400 and the outer frame body 300 at the same time.

The first piezoelectric actuator 205 and the second piezoelectric actuator 201 are in the same horizontal plane, which can improve the parallelism between the first piezoelectric actuator 205 and the second piezoelectric actuator 201, so as to avoid assembly The superposition of assembly tolerances occurs during molding, thereby improving the assembly accuracy of the camera module.

Further, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are both disposed outside the photosensitive element 100 to avoid overlapping of at least one piezoelectric actuator 200 and the photosensitive element 100 in the height direction, Increasing the height of the photosensitive assembly 100 causes the height of the module to increase, or causes the focal plane of the lens assembly 600 to fail to fall on the photosensitive chip, which affects the imaging effect.

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

7 to 15, it can be seen that the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are located in several optional installation positions in the camera module. The electric actuators 201 are respectively located on adjacent sides of the camera module.

8 and 10, it can be seen that, optionally, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 are respectively disposed in the middle of the adjacent sides of the first base 501 and the second base 503, In this way, the photosensitive assembly 100 can maintain a more stable movement and improve the stability of the camera module.

9 and 11 , according to other embodiments of the present application, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 may also be arranged at the same corner of the camera module, that is, the first piezoelectric actuator 205 The electric actuator 205 and the second piezoelectric actuator 201 are respectively drawn out from the same corner of the camera module, and the side where the drive shaft 223 of the first piezoelectric actuator 205 is located is close to the side of the second piezoelectric actuator 201. The sides where the drive shaft 223 is located are perpendicular to each other, so that when conducting line conduction, it can extend upward from the same corner to the fixed substrate 400 through a wire or a flexible board to achieve line conduction, thereby simplifying the circuit layout of the camera module. Of course, the first piezoelectric actuator 205 and the second piezoelectric actuator 201 may also be disposed at other positions, which are not limited in this 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, so that the camera module Group 10 has a more compact structure.

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

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

Specifically, the first guide unit 207 is disposed on the first base 501, and the first guide unit 207 is disposed opposite to the first piezoelectric actuator 205, that is, the first guide unit 207 is disposed on the first base 501 along the X-axis direction The first piezoelectric actuator 205 is placed on the opposite side of the first base 501 along the X-axis direction, the first guide unit 207 and the first piezoelectric actuator 205 can be placed at the same height, or can be The same height setting is not limited in this disclosure.

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

Optionally, the first guide unit 207 can be a guide rod whose length direction is the same as the X direction. The first base 501 has at least one opening at the position where the guide rod is set. A base 501 is movably connected, and the moving direction of the first base 501 is controlled by the direction of the guide rod, so that the first base 501 can move more accurately along the X-axis.

The second guide unit 203 can also be a guide rod whose length direction is consistent with the Y direction. The second base 503 has at least one opening at the position where the guide rod is arranged. The guide rod is placed in the opening so that the guide rod and the second base 503 is movably connected, and the moving direction of the second base 503 is controlled by the direction of the guide rod, so that the second base 503 can move more accurately along the Y-axis.

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

Both ends of the second guide unit 203 are fixed to the fixed base plate 400 , so that the second base 503 can move along the Y-axis direction under the guidance of the second guide unit 203 .

12 to 14 , according to another exemplary embodiment of the present application, the at least one piezoelectric actuator 200 of the camera module can be eccentrically arranged, and the at least one piezoelectric actuator 200 is moved from the corner of the support assembly 500 The extension can provide more space for the upward extension of the circuit board.

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

The first guide unit 207 is arranged opposite to the first piezoelectric actuator 205 in the same direction, and the first guide unit 207 is arranged at an opposite angle to the first piezoelectric actuator 205 , and the second guide unit 203 is connected to the second piezoelectric actuator 205 . The actuators 201 are arranged in the same direction, and the second guide unit 203 is arranged at an opposite angle to the second piezoelectric actuator 201 .

Through the guiding function of the guiding unit 250 , the moving direction of the photosensitive assembly 100 driven by the support assembly 500 can be controlled more accurately, so as to achieve a better optical anti-shake effect. It can be understood by those skilled in the art that the guiding unit 250 may be a ball, a sliding block or other structures capable of realizing a guiding function, which is not limited in this application.

According to the embodiment of the present application, when performing optical image stabilization in the X-axis direction, the first piezoelectric actuator 205 can generate a driving force along the X-axis direction to provide pulses to the piezoelectric element 221 of the first piezoelectric actuator 205 The voltage causes the piezoelectric element 221 to provide vibration of the drive shaft 223 in the X-axis direction, so that the drive shaft 223 slightly reciprocates in the X-axis direction, thereby driving the moving member 225 to linearly move along the X-axis direction on the drive shaft 223, thereby The first base 501 is driven to move along the X-axis direction, thereby driving the photosensitive assembly 100 to move along the X-axis direction. When the piezoelectric element 221 is controlled to be rapidly retracted, the drive shaft 223 is also rapidly retracted in the opposite direction to the movement. Due to the inertia of the moving part 225, although there is friction, the moving part 225 will be stay where it is.

When performing optical image stabilization in the Y-axis direction, the second piezoelectric actuator 201 can generate a driving force along the Y-axis direction to provide a pulse voltage to the piezoelectric element 221 of the second piezoelectric actuator 201, so that the piezoelectric element 221 provides vibration of the drive shaft 223 in the Y-axis direction, so that the drive shaft 223 moves back and forth slightly in the Y-axis direction, thereby driving the moving member 225 to linearly move along the Y-axis direction on the drive shaft 223, thereby driving the second base 503 Move along the Y-axis direction, thereby driving the photosensitive assembly 100 to move along the Y-axis direction.

When the piezoelectric element 221 is controlled to be rapidly retracted, the drive shaft 223 is also rapidly retracted in the opposite direction to the movement. Due to the inertia of the moving part 225, although there is friction, the moving part 225 will be stay where it is. Of course, more than two piezoelectric actuators can be provided in this application, and when more than two piezoelectric actuators are provided, the principle is the same as that of two piezoelectric actuators.

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 relative to each other at the same time. The outer frame body 300 moves along the X-axis direction, thereby driving the photosensitive assembly 100 to move along the X-axis direction, so as to realize optical anti-shake in the X-axis direction.

The second piezoelectric actuator 201 is disposed on the second base 503 and drives the first base 501 to move relative to the second base 503 along the Y-axis direction, thereby driving the photosensitive assembly 100 to move along the Y-axis direction to realize the Y-axis directional optical image stabilization.

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

According to the embodiment of the present application, specifically, the first piezoelectric actuator 205 is disposed on an outer side wall of the second base 503 , the first piezoelectric actuator 205 is fixed to the fixed substrate 400 and drives the second base 503 Move along the X-axis. According to some embodiments, the piezoelectric element 221 of the first piezoelectric actuator 205 is fixed on the bottom surface of the fixing substrate 400 by means of adhesive bonding. The adhesive can be flexible soft glue.

The longitudinal direction of the drive shaft 223 of the first piezoelectric actuator 205 is consistent with the X direction, and the other end of the drive shaft 223 may also be fixed on the fixed substrate 400 or the other end of the drive shaft 223 by an elastic adhesive. Active connection, that is, suspended on the fixed substrate 400 or suspended in the air, does not affect its repeated vibration, so that the piezoelectric element 221 and the drive shaft 223 of the piezoelectric actuator in the first direction can vibrate freely.

The moving member 225 may be fixed to the second base 503 by means of bonding, or may be fixed in a direction integrally formed with the second base 503 . In addition, the piezoelectric element 221 may be formed integrally with the fixed substrate 400 . Using the fixed substrate 400 as a reference plane, fixing the first piezoelectric actuator 205 on the fixed substrate 400 upward can improve the assembly accuracy of the first piezoelectric actuator 205, and the first piezoelectric actuator 205 Maintain good flatness.

The second piezoelectric actuator 201 is disposed on an outer side wall of the first base 501 . 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 on the first base 501 by means of an adhesive, and the adhesive can be soft glue with elasticity.

The length direction of the drive shaft 223 of the second piezoelectric actuator 201 is consistent with the Y direction, and the other end of the drive shaft 223 can also be fixed on the second base 503 or the drive shaft 223 through an elastic adhesive. The other end is movably connected, that is, suspended on the second base 503 or suspended in the air, so as not to affect its repeated vibration. The piezoelectric element 221 and the drive shaft 223 of the second piezoelectric actuator 201 may be free to vibrate.

The moving member 225 may be fixed to the first base 501 by means of bonding, or may be fixed in a direction integrally formed with the first base 501 . In addition, the piezoelectric element 221 may be formed integrally with the second base 503 .

FIG. 16 is a schematic diagram showing the positional structure of the piezoelectric actuator, the photosensitive component and the fixed substrate of the camera module and the terminal device according to the exemplary embodiment of the present application. 17-19 are schematic structural diagrams of a camera module and a piezoelectric actuator of a terminal device according to exemplary embodiments of the present application.

16-19 , according to an embodiment of the present application, at least one piezoelectric actuator 200 includes a piezoelectric element 221 , a driving shaft 223 and a moving member 225 . Referring to FIG. 16 , at least one piezoelectric actuator 200 is located between the fixed substrate 400 and the photosensitive element 100 . It is further illustrated that at least one piezoelectric actuator 200 is located in two parallel positions of the fixed substrate 400 and the photosensitive element 100 , respectively. in the gap between the planes. The projection of the at least one piezoelectric actuator 200 in the direction of the optical axis of the camera module is located in the area of the support element 500 , and the projection position is adjacent to the photosensitive element 100 .

The piezoelectric element 221 generates a driving force, and the moving member 225 is slidable and in frictional contact with the driving shaft 223. The frictional force between the driving shaft 223 and the moving member 225 drives the moving member 225 to move along the length of the driving shaft 223. 223 is connected to the piezoelectric element 221 , and the piezoelectric element 221 may be disposed on the fixed substrate 400 .

Compared with the drive mechanism of the prior art, the at least one piezoelectric actuator 200, as a drive motor for driving the photosensitive element 100 to move, not only has the advantages of small size, large thrust, and high precision, but also has the advantages of a drive structure. Relatively simple, suitable for driving heavier products, more suitable for chip anti-shake, prism anti-shake and other purposes. Compared with the magnetic driving method, it has better anti-electromagnetic interference effect. At the same time, super-resolution control can be realized by taking advantage of its control accuracy in chip anti-shake.

According to the 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 drive shaft 223 and the piezoelectric substrate 2210 . At least one piezoelectric actuator 200 is electrically connected to the electrical connector of the fixed substrate 400 through a flexible printed circuit board. A pulse voltage is provided to the piezoelectric element 221 of the at least one piezoelectric actuator 200 through the circuit layer of the electrical connector of the fixed substrate 400, so that the piezoelectric element 221 provides vibration of the driving shaft 223 in the axial direction, so that the driving shaft 223 is in the axial direction. A slight reciprocating movement in the axial direction drives the moving member 225 to linearly move on the drive shaft 223 . And by supplying pulse voltages of different frequencies to the vibrating part, the speed of the vibration of the drive shaft 223 in the axial direction can be controlled, thereby changing the speed of the moving part 225 moving on the drive shaft 223 .

According to an embodiment of the present application, the piezoelectric substrate 2210 is a substrate having a piezoelectric effect and shrinks or expands according to the polarization direction and the 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 a potential is applied to the piezoelectric substrate 2210, and the difference in the applied voltage is controlled by a controller, causing the piezoelectric substrate 2210 and the vibration substrate 2212 to shrink and expand action.

According to the embodiment of the present application, the bending deformation principle of the composite layer of the piezoelectric substrate 2210 and the vibration substrate 2212 is discussed. It is worth mentioning that the piezoelectric substrate 2210 and the vibration substrate 2212 have a disc shape. 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 electric field direction caused by the potential difference on the piezoelectric substrate 2210 , the piezoelectric substrate 2210 is stretched in the width direction and deformed in the direction in which its thickness decreases. Due to the expansion effect, the vibration base plate 2212 will bulge upward and deform.

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 can be reversed instantaneously, and the piezoelectric substrate 2210 and the vibration substrate 2212 also change the state of displacement. If the above-mentioned potential difference changes are repeated, the piezoelectric substrate 2210 and the vibration substrate 2212 can be continuously The ground vibrates up and down.

According to the embodiment of the present application, the piezoelectric element 221 further includes a plurality of piezoelectric stretching bodies 2214 and a plurality of electrodes, and the plurality of piezoelectric stretching bodies 2214 and the plurality of electrodes are alternately stacked. 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 electric field directions caused by the potential differences on the plurality of electrodes are different, the plurality of piezoelectric telescopic bodies 2214 will 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 the embodiment of the present application, the piezoelectric element 221 has a rectangular parallelepiped shape, and the rectangular parallelepiped shape has sides along the X-axis, the Y-axis, and the Z-axis which are orthogonal to each other, respectively. In the present application, the length of the piezoelectric element 221 in the X-axis direction is 1 mm, the length in the Y-axis direction is 1 mm, and the length (height) in the Z-axis direction is 2 mm. Of course, this application does not limit its size.

As shown in FIG. 20 , a plurality of electrodes are arranged on the plurality of piezoelectric stretchable bodies 2214, and a plurality of electrodes formed by sandwiching the plurality of piezoelectric stretchable bodies 2214 alternately are used as internal electrodes 2216. The plurality of electrodes arranged on the surfaces of the plurality of piezoelectric stretchable bodies 2214 and arranged at 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 stretchable bodies 2214 arranged on the surfaces of the plurality of piezoelectric stretchable bodies 2214 and arranged on the side surfaces thereof are referred to as side electrodes 22161 . When the piezoelectric stretchable body 2214 is one layer, a pair of electrodes are arranged on the upper and lower surfaces of the piezoelectric stretchable body 2214, and the side electrodes 22161 are connected to an external circuit by welding or the like. When the piezoelectric stretchable body 2214 is multi-layered, the electrode layers of the same polarity are connected through the side electrodes 22161, so that the electrode layers of the positive and negative electrodes can be drawn out on the two side surfaces.

18 and 19 , according to an embodiment of the present application, the shape of the drive shaft 223 is suitable for a cylindrical shape, a polygonal prism shape or a cube shape, which is cylindrical in the present application, and the drive shaft 223 is fixed to the vibration substrate 2212 . In the present application, the piezoelectric element 221 is adhered to the center portion of the upper surface of the piezoelectric element 221 with an adhesive. The drive shaft 223 may be mainly composed of carbon, heavy metals, carbides of heavy metals, borides of heavy metals, and nitrides of heavy metals.

In this application, the vibration substrate 2212 is a piezoelectric ceramic rod or a piezoelectric ceramic sheet. The vibration substrate 2212 and the drive shaft 223 can be connected by adhesive or integrally formed by injection molding. The vibration substrate 2212 has a simpler structure and lower cost. limited. The vibrating substrate 2212 is also not limited to piezoelectric ceramics, and may also be other structures capable of driving the photosensitive assembly 100 to move by utilizing the piezoelectric principle, which is not limited in this application. 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 moving member 225 can be in frictional contact with the driving shaft 223 .

According to the embodiment of the present application, the driving shaft 223 is fixed on the 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 the uppermost layer of the composite layer.

According to the embodiment of the present application, the control unit of the camera module can 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 repeats the potential difference change, the piezoelectric substrate 2210 and the vibration substrate 2212 can vibrate up and down continuously.

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 at The change from the first voltage to the second voltage during the first cycle, the change from the second voltage to the first voltage during the second cycle, wherein the first cycle of the forward voltage is longer than the second cycle, and the second cycle of the contraction voltage longer than the first period.

The case of a in FIG. 18 is the case where the piezoelectric substrate is not turned on and the voltage is at the original position. The forward and reverse voltages represented by the case of b in FIG. 18 are configured to cause the piezoelectric substrate 2210 to bulge upward during the first cycle, the stroke is A, and represented by the case of c in FIG. 18 The forward and reverse voltages are configured to cause the piezoelectric substrate 2210 to bulge downward during the second cycle. After the first period of applying the forward voltage, when the moving member 225 moves forward on the drive shaft 223 and the contraction voltage is applied, the moving member 225 may retreat on the drive shaft 223 during the second period, the stroke is B.

According to the embodiment of the present application, when a forward voltage is repeatedly applied to the piezoelectric substrate 2210, the piezoelectric substrate 2210 at one end will expand and contract, so that the vibration substrate 2212 will bulge in one direction and deform into a bowl shape, and will quickly return to the original flat shape in the 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 will expand and contract, so that the vibration substrate 2212 will bulge and deform into a bowl shape in another direction, and will quickly return to the original flat plate in state.

When the longitudinal direction of the drive shaft 223 of the at least one piezoelectric actuator 200 is disposed along the X-axis direction, the vibration substrate 2212 of the at least one piezoelectric actuator 200 drives the drive shaft 223 to perform linear reciprocating motion along the X-axis direction, thereby driving The shaft 223 drives the moving member 225 to drive the driven member to move along the X-axis direction through frictional force. When the longitudinal direction of the drive shaft 223 of the other at least one piezoelectric actuator 200 is arranged along the Y-axis direction, the vibration substrate 2212 of the at least one piezoelectric actuator 200 drives the drive shaft 223 to perform linear reciprocating motion along the Y-axis direction, Thereby, the driving shaft 223 drives the moving member 225 to drive the driven member to move along the Y-axis direction through the frictional force. At least one piezoelectric actuator 200 can drive the drive shaft 223 through the vibrating substrate 2212 to drive the moving member 225 through friction to drive the driven member to move in two directions (X-axis direction and Y-axis direction) that are perpendicular to each other on the imaging plane.

When the driving shaft 223 reciprocates in the longitudinal direction of the shaft, due to the frictional contact between the moving member 225 and the driving shaft 223, when the vibration substrate 2212 is deformed into a bowl shape in one direction, the moving member 225 and the driving shaft 223 move together, and when the vibration substrate 2212 is deformed into a bowl shape in one direction When the vibration base plate 2212 quickly returns to the original flat shape, the drive shaft 223 also moves in the reverse direction. Since the moving member 225 is in a high-speed state, it cannot follow the movement of the drive shaft 223 and cannot return to the original position, and can only stay at the position. superior.

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

It is worth mentioning that, compared with the driving mechanism of the prior art, at least one piezoelectric actuator 200 not only has the advantages of small size, large thrust, high precision, relatively simple driving structure, and is suitable for driving heavier products, Moreover, the structure is smaller, the circuit extends through the side surface of the piezoelectric element 221, the circuit is relatively simple, and is suitable for use in a module with compact space.

According to the embodiment of the present application, the lens assembly 600 includes a lens and a lens carrier 401 , and the lens is installed in the lens carrier 401 , that is, the lens assembly 600 may be a fixed-focus lens. In the embodiment of the present application, the lens assembly 600 can also be an auto-focus lens, that is, an auto-focus driving part 420 is provided on the lens carrier 401, and the auto-focus driving part 420 is used to drive the lens to move along the optical axis direction to realize auto-focusing. Of course, the present application does not specifically limit the lens type.

According to some embodiments of the present application, the lens may be installed in the lens carrier 401 by means of bonding, snapping or threading, etc. The lens and the lens carrier 401 in the present application may be arranged in an integrated structure, so that the lens carrier 401 has the The function is used to accommodate at least two lenses of the lens in the lens barrel, and the lens carrier 401 drives the lens to move to realize automatic focusing. The integrated structure in the present application can reduce the size of the lens barrel in the lens, and reduce the gap between the lens barrel and the carrier, so the beneficial effect of reducing the size of the camera module can be achieved. The lens assembly 600 is disposed on the fixed substrate 400 , and the circuit is conducted through the circuit layer of the fixed substrate 400 .

The camera module 10 further includes an outer frame body 300. The outer frame body 300 is located on the outer side of the camera module 10 and can be used as its outer casing. The component 500 will not be in contact with the outer frame body 300 to cause friction, thereby affecting the optical anti-shake effect.

The camera module 10 also includes a housing (not shown in the figure), which can be combined with the outer frame 300 to protect the various components of the camera module, and can also be used to block the electromagnetic waves generated by the camera module during operation, resulting in The effect of electromagnetic shielding. If the electromagnetic waves generated are emitted to the outside of the camera module or are emitted to the outside of the camera module when the camera module is driven, 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, which is grounded through a ground plate so that the housing acts as an electromagnetic shield. The material of the housing can be a plastic material, and the surface of the plastic is coated with a conductive material to block electromagnetic waves. The present application does not limit the material of the casing.

Specifically, the casing has a through hole, so that the light passing through the lens assembly 600 can be incident on the photosensitive assembly 100 for imaging, and the casing and the outer frame body 300 form a accommodating cavity for accommodating the lens assembly 600, the photosensitive assembly 100 and the driving components Among them, to prevent the lens assembly 600, the photosensitive assembly 100 and the driving components from falling off and being damaged due to external impact.

21 , according to the embodiment of the present application, the autofocus driving part 420 is arranged in any corner area of the spare space of the fixed substrate 400 , so that the lens carrier 401 drives the driving force of the lens to move along the optical axis direction.

The AF drive unit 420 includes an AF coil 405 and an AF magnet 403 , and the AF coil 405 is mounted on one side wall of the fixed substrate 400 . The autofocus magnet 403 is attached to the magnet attachment portion of the lens carrier 401 facing the autofocus coil 405 .

Further, the AF magnet 403 can be embedded or attached to the side wall of the lens carrier 401, that is, the AF magnet 403 can be embedded or attached to the outer or inner side wall of the lens carrier 401, so that the AF coil 405 and the The relative position of the focusing magnet 403 can be set.

The autofocus coil 405 and the autofocus magnet 403 in the present application are arranged in the middle position of the side wall, so that the lens can keep moving smoothly without tilting. In other embodiments of the present application, the auto-focusing coil 405 and the auto-focusing magnet 403 may also be disposed at a corner between the lens carrier 401 and the fixed substrate 400 , which is not limited in the present application.

According to other embodiments, an AF adjustment sensor may be provided inside or adjacent to the side wall of the AF coil 405, and the AF adjustment sensor may sense the position change of the lens carrier 401 on the fixed substrate 400 during autofocusing. In this application, the automatic focus A Hall element can be selected as the adjustment sensor, which can accurately measure the position change of the lens carrier 401 .

The conduction circuit of the autofocus coil 405 is electrically connected to the fixed substrate 400 through an autofocus flexible printed circuit board (FPC) 407. When the autofocus coil 405 is powered on through the autofocus flexible printed circuit board (FPC) 407, the autofocus coil 405 A driving force along the optical axis is generated between the auto-focusing magnet 403 and the lens carrier 401 to drive the lens to move along the optical axis to realize auto-focusing. Of course, the fixed substrate 400 may serve as a part of the autofocus driving part 420 .

According to the embodiment of the present application, the autofocus driving part 420 may further include a ball part, and between the lens carrier 401 and the fixed base plate 400 there is at least one accommodating cavity that can accommodate the first ball part 409 for supporting and maintaining the lens carrier 401 and the fixed base plate 400 . The distance between the substrates 400 and the movement of the lens carrier 401 along the optical axis relative to the base are provided, and the sliding friction is replaced by rolling friction to reduce the frictional force of the lens carrier 401 when moving.

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), the first track The position of one 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 It moves in the optical axis direction (Z axis direction) with respect to the fixed substrate 400 . Since the first accommodating cavity is produced by a directional regulation, the first ball portion 409 can be moved along the Z-axis direction, and the moving direction of the lens can be made more precise during auto-focusing.

According to the embodiment of the present application, the number of the first accommodating cavities may be two. When the accommodating cavities are arranged on the side where the auto-focusing magnet 403 is located, the two first accommodating cavities are respectively arranged on both sides of the auto-focusing magnet 403, so that the During auto-focusing, the lens carrier 401 moves more smoothly without tilting. Certainly, the first accommodating cavity may be disposed at other positions of the lens carrier 401 and the fixed substrate 400 , which is not limited in this application. In other embodiments, a protruding slider can also be provided on the lens carrier 401, and the friction between the lens carrier 401 and the base can be reduced by the movement of the slider.

Finally, it should be noted that the above descriptions are only exemplary embodiments of the present disclosure, and are not intended to limit the present disclosure. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art will still The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

A camera module, characterized in that, comprising:

lens assembly;

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

The photosensitive component is arranged under the fixed substrate, wherein,

The photosensitive component extends upward and is electrically connected to the electrical connector of the fixed substrate.
The camera module according to claim 1, wherein the photosensitive component is electrically connected to the electrical connector of the fixed substrate through a flexible printed circuit board.
The camera module according to claim 1, further comprising:

A support assembly, the photosensitive assembly is disposed on the support assembly, the support assembly includes a first base, a second base, and is slidably disposed on the second base along a first direction, and the photosensitive assembly is disposed on the first base; slidably arranged on the outer frame along the second direction; wherein, the first direction and the second direction are perpendicular to the plane of the optical axis along the axial direction of the lens. two directions perpendicular to each other.
camera module according to claim 1, is characterized in that, the electrical connector of described fixed base plate comprises:

At least two LDS grooves are 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.
The camera module according to claim 1, wherein the electrical connector for fixing the substrate comprises:

A circuit layer is laid on the surface of the fixed substrate for conducting the circuits of the photosensitive component, at least one piezoelectric actuator and external electronic equipment.
camera module according to claim 1, is characterized in that, the electrical connector of described fixed base plate comprises:

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

At least one piezoelectric actuator for driving the support assembly to move, and the at least one piezoelectric actuator includes:

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

The second piezoelectric actuator drives the second base to move in the second direction.
The camera module according to 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, a 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 drive shaft to move .
The camera module according to claim 7, wherein each piezoelectric actuator comprises a plurality of piezoelectric stretch bodies and a plurality of electrodes, wherein,

The plurality of piezoelectric stretchable bodies and the plurality of electrodes are alternately stacked, and when the electric field directions caused by the potential differences on the plurality of electrodes are different, the plurality of piezoelectric stretchable bodies are deformed, and the piezoelectric element The continuous deformation of the drive shaft drives the reciprocating motion of the drive shaft.
The camera module according to claim 7, wherein the at least one piezoelectric actuator comprises:

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

The second piezoelectric actuator drives the first base to move in the second direction.
The camera module according to claim 7, wherein each piezoelectric actuator comprises a moving part, a driving shaft and a piezoelectric element, the driving shaft is connected to the piezoelectric element and the moving part is slidable and is arranged on the drive shaft in frictional contact.
The camera module according to claim 7, further comprising:

a first guide unit, disposed on the opposite side of the first piezoelectric actuator, for guiding the first base to move in a first direction;

A second guide unit, disposed on the opposite side of the second piezoelectric actuator, is used to guide the second base to move in a second direction.
The camera module according to claim 12, wherein the first piezoelectric actuator and the second piezoelectric actuator are located on the same horizontal plane.
The camera module according to claim 13, wherein the first piezoelectric actuator and the second piezoelectric actuator are both disposed outside the photosensitive component.
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 according to claim 13, wherein the first piezoelectric actuator and the first guide unit are respectively disposed on opposite sides of the first base along the first direction the middle position.
The camera module according to claim 13, wherein the second piezoelectric actuator and the second guide unit are respectively disposed on opposite sides of the second base along the second direction the middle position.
The camera module according to claim 13, wherein the first piezoelectric actuator and the first guide unit are respectively disposed on opposite sides of the first base along the first direction diagonal position.
The camera module according to claim 13, wherein the second piezoelectric actuator and the second guide unit are respectively disposed on opposite sides of the second base along the second direction diagonal position.
The camera module according to claim 13, wherein the first piezoelectric actuator and the second piezoelectric actuator are located at the same corner of the camera module.
A camera module, characterized in that, comprising:

lens assembly;

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

a photosensitive component, arranged under the fixed substrate;

a support assembly, the photosensitive assembly is arranged on the support assembly;

At least one piezoelectric actuator, the photosensitive component is drivingly connected with the at least one piezoelectric actuator, and the at least one piezoelectric actuator drives the support component to drive the photosensitive component to form an image moving on a plane, wherein the at least one piezoelectric actuator is electrically connected to the electrical connector of the fixed substrate.
The camera module according to claim 22, wherein the at least one piezoelectric actuator is electrically connected to the electrical connector of the fixed substrate through a flexible printed circuit board.
The camera module according to claim 22, wherein each piezoelectric actuator comprises a moving part, a drive shaft and a piezoelectric element, wherein,

the drive shaft is connected to the piezoelectric element;

The moving member is slidably and frictionally disposed on the drive shaft.
The camera module according to 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, a 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 drive shaft to move .
The camera module according to claim 24, wherein each piezoelectric actuator comprises a plurality of piezoelectric stretching bodies and a plurality of electrodes, wherein,

The plurality of piezoelectric stretchable bodies and the plurality of electrodes are alternately stacked, and when the electric field directions caused by the potential differences on the plurality of electrodes are different, the plurality of piezoelectric stretchable bodies are deformed, and the piezoelectric element The continuous deformation of the drive shaft drives the reciprocating motion of the drive shaft.
camera module according to claim 22, is characterized in that, the electrical connector of described fixed base plate comprises:

At least two LDS grooves are 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.
The camera module according to claim 22, wherein the electrical connector for fixing the substrate comprises:

A circuit layer is laid on the surface of the fixed substrate for conducting the circuits of the photosensitive component, the at least one piezoelectric actuator and the external electronic equipment.
camera module according to claim 22, is characterized in that, the electrical connector of described fixed base plate comprises:

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

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

The first base is slidably arranged on the second base along the 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 where the optical axis direction along the axial direction of the lens is located.
The camera module of claim 30, wherein the at least one piezoelectric actuator comprises:

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

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

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

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

a first guide unit, disposed on the opposite side of the first piezoelectric actuator, for guiding the first base to move in a first direction;

A second guide unit, disposed on the opposite side of the second piezoelectric actuator, is used to guide the second base to move in a second direction.
The camera module of claim 32, wherein the first piezoelectric actuator and the second piezoelectric actuator are located on the same horizontal plane.
The camera module according to claim 34, wherein the first piezoelectric actuator and the second piezoelectric actuator are both disposed outside the photosensitive component.
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 according to claim 33, wherein the first piezoelectric actuator and the first guide unit are respectively disposed on opposite sides of the first base along the first direction the middle position.
The camera module according to claim 33, wherein the second piezoelectric actuator and the second guide unit are respectively disposed on opposite sides of the second base along the second direction the middle position.
The camera module according to claim 33, wherein the first piezoelectric actuator and the first guide unit are respectively disposed on opposite sides of the first base along the first direction diagonal position.
The camera module according to claim 33, wherein the second piezoelectric actuator and the second guide unit are respectively disposed on opposite sides of the second base along the second direction diagonal position.
The camera module of claim 34, wherein the first piezoelectric actuator and the second piezoelectric actuator are located at the same corner of the camera module.
The camera module according to claim 22, wherein the at least one piezoelectric actuator is disposed between the photosensitive component and the fixed substrate, and the at least one piezoelectric actuator is in the camera module The projection in the direction of the optical axis of the group is located in the area of the support assembly.
The camera module according to claim 22, wherein the photosensitive assembly is electrically connected to the electrical connector of the fixed substrate.
A camera module, characterized in that, comprising:

lens assembly;

a fixed base plate for setting the lens assembly;

a photosensitive component, arranged under the fixed substrate;

a support assembly, the photosensitive assembly is arranged on the support assembly;

at least one piezoelectric actuator, the at least one piezoelectric actuator is disposed between the photosensitive component and the fixed substrate, and the photosensitive component is drivingly connected to the at least one piezoelectric actuator, The projection of the at least one piezoelectric actuator in the direction of the optical axis of the camera module is located in the area of the support assembly, and is used to drive the support assembly to move.
The camera module according to claim 45, wherein the at least one piezoelectric actuator is electrically connected to the electrical connector of the fixed substrate through a flexible printed circuit board.
The camera module according to claim 45, wherein each piezoelectric actuator comprises a moving part, a driving shaft and a piezoelectric element, the driving shaft is connected to the piezoelectric element, and the moving part is capable of It is provided on the drive shaft in sliding and frictional contact.
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, a 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 drive shaft to move .
The camera module according to claim 47, wherein each piezoelectric actuator comprises a plurality of piezoelectric stretching bodies and a plurality of electrodes, wherein,

The plurality of piezoelectric stretchable bodies and the plurality of electrodes are alternately stacked, and when the electric field directions caused by the potential differences on the plurality of electrodes are different, the plurality of piezoelectric stretchable bodies are deformed, and the piezoelectric element The continuous deformation of the drive shaft drives the reciprocating motion of the drive shaft.
The camera module according to claim 45, wherein the electrical connector for fixing the substrate comprises:

At least two LDS grooves are 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.
The camera module according to claim 45, wherein the electrical connector for fixing the substrate comprises:

A circuit layer is laid on the surface of the fixed substrate for conducting the circuits of the photosensitive component, the at least one piezoelectric actuator and the external electronic equipment.
The camera module according to claim 45, wherein the electrical connector of the fixed 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 along the second direction;

The first base is slidably arranged on the second base along the 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 where the optical axis direction along the axial direction of the lens is located.
The camera module of claim 53, wherein the at least one piezoelectric actuator comprises:

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

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

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

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

a first guide unit, disposed on the opposite side of the first piezoelectric actuator, for guiding the first base to move in a first direction;

A second guide unit, disposed on the opposite side of the second piezoelectric actuator, is used to guide the second base to move in a second direction.
The camera module of claim 55, wherein the first piezoelectric actuator and the second piezoelectric actuator are located on the same horizontal plane.
The camera module of claim 57, wherein the first piezoelectric actuator and the second piezoelectric actuator are both disposed outside the photosensitive component.
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 according to claim 56, wherein the first piezoelectric actuator and the first guide unit are respectively disposed on opposite sides of the first base along the first direction the middle position.
The camera module according to claim 56, wherein the second piezoelectric actuator and the second guide unit are respectively disposed on opposite sides of the second base along the second direction the middle position.
The camera module according to claim 56, wherein the first piezoelectric actuator and the first guide unit are respectively disposed on opposite sides of the first base along the first direction diagonal position.
The camera module according to claim 56, wherein the second piezoelectric actuator and the second guide unit are respectively disposed on opposite sides of the second base along the second direction diagonal position.
The camera module of claim 57, wherein the first piezoelectric actuator and the second piezoelectric actuator are located at the same corner of the camera module.
The camera module according to claim 45, wherein the photosensitive component is electrically connected to the electrical connector of the fixed substrate.
A terminal device, characterized by comprising the camera module according to any one of claims 1 to 66.